1 /* C Compatible Compiler Preprocessor (CCCP)
2 Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Paul Rubin, June 1986
4 Adapted to ANSI C, Richard Stallman, Jan 1987
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding! */
24 typedef unsigned char U_CHAR;
28 #include "../src/config.h"
36 /* The macro EMACS is defined when cpp is distributed as part of Emacs,
37 for the sake of machines with limited C compilers. */
40 #endif /* not EMACS */
42 #ifndef STANDARD_INCLUDE_DIR
43 #define STANDARD_INCLUDE_DIR "/usr/include"
46 #ifndef LOCAL_INCLUDE_DIR
47 #define LOCAL_INCLUDE_DIR "/usr/local/include"
50 #if 0 /* We can't get ptrdiff_t, so I arranged not to need PTR_INT_TYPE. */
52 #define PTR_INT_TYPE ptrdiff_t
54 #define PTR_INT_TYPE long
60 /* By default, colon separates directories in a path. */
61 #ifndef PATH_SEPARATOR
62 #define PATH_SEPARATOR ':'
65 #include <sys/types.h>
71 /* The following symbols should be autoconfigured:
78 In the mean time, we'll get by with approximations based
79 on existing GCC configuration symbols. */
82 # ifndef HAVE_STDLIB_H
83 # define HAVE_STDLIB_H 1
85 # ifndef HAVE_UNISTD_H
86 # define HAVE_UNISTD_H 1
89 # define STDC_HEADERS 1
91 #endif /* defined (POSIX) */
93 #if defined (POSIX) || (defined (USG) && !defined (VMS))
95 # define HAVE_FCNTL_H 1
102 # if TIME_WITH_SYS_TIME
103 # include <sys/time.h>
107 # include <sys/time.h>
112 # include <sys/resource.h>
119 /* This defines "errno" properly for VMS, and gives us EACCES. */
131 # define bcmp(a, b, n) memcmp (a, b, n)
134 # define bcopy(s, d, n) memcpy (d, s, n)
137 # define bzero(d, n) memset (d, 0, n)
139 #else /* !STDC_HEADERS */
143 # if !defined (BSTRING) && (defined (USG) || defined (VMS))
146 # define bcmp my_bcmp
159 # endif /* !defined (bcmp) */
162 # define bcopy my_bcopy
172 # endif /* !defined (bcopy) */
175 # define bzero my_bzero
179 register unsigned length;
184 # endif /* !defined (bzero) */
186 # endif /* !defined (BSTRING) && (defined (USG) || defined (VMS)) */
187 #endif /* ! STDC_HEADERS */
189 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
190 # define __attribute__(x)
194 # if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
195 # define PROTO(ARGS) ARGS
197 # define PROTO(ARGS) ()
201 #if defined (__STDC__) && defined (HAVE_VPRINTF)
203 # define VA_START(va_list, var) va_start (va_list, var)
204 # define PRINTF_ALIST(msg) char *msg, ...
205 # define PRINTF_DCL(msg)
206 # define PRINTF_PROTO(ARGS, m, n) PROTO (ARGS) __attribute__ ((format (printf, m, n)))
208 # include <varargs.h>
209 # define VA_START(va_list, var) va_start (va_list)
210 # define PRINTF_ALIST(msg) msg, va_alist
211 # define PRINTF_DCL(msg) char *msg; va_dcl
212 # define PRINTF_PROTO(ARGS, m, n) () __attribute__ ((format (printf, m, n)))
213 # define vfprintf(file, msg, args) \
215 char *a0 = va_arg(args, char *); \
216 char *a1 = va_arg(args, char *); \
217 char *a2 = va_arg(args, char *); \
218 char *a3 = va_arg(args, char *); \
219 fprintf (file, msg, a0, a1, a2, a3); \
223 #define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2)
224 #define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3)
225 #define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4)
231 /* VMS-specific definitions */
234 #define O_RDONLY 0 /* Open arg for Read/Only */
235 #define O_WRONLY 1 /* Open arg for Write/Only */
236 #define read(fd,buf,size) VMS_read (fd,buf,size)
237 #define write(fd,buf,size) VMS_write (fd,buf,size)
238 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
239 #define fopen(fname,mode) VMS_fopen (fname,mode)
240 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
241 #define strncat(dst,src,cnt) VMS_strncat (dst,src,cnt)
242 #define fstat(fd,stbuf) VMS_fstat (fd,stbuf)
243 #define stat(name,stbuf) VMS_stat (name,stbuf)
244 static int VMS_fstat (), VMS_stat ();
245 static char * VMS_strncat ();
246 static int VMS_read ();
247 static int VMS_write ();
248 static int VMS_open ();
249 static FILE * VMS_fopen ();
250 static FILE * VMS_freopen ();
251 static void hack_vms_include_specification ();
252 typedef struct { unsigned :16, :16, :16; } vms_ino_t;
253 #define ino_t vms_ino_t
254 #define INCLUDE_LEN_FUDGE 10 /* leave room for VMS syntax conversion */
256 #define BSTRING /* VMS/GCC supplies the bstring routines */
257 #endif /* __GNUC__ */
266 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
267 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
269 /* Find the largest host integer type and set its size and type. */
271 #ifndef HOST_BITS_PER_WIDE_INT
273 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
274 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
275 #define HOST_WIDE_INT long
277 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
278 #define HOST_WIDE_INT int
284 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
288 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
291 /* Define a generic NULL if one hasn't already been defined. */
298 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
299 #define GENERIC_PTR void *
301 #define GENERIC_PTR char *
306 #define NULL_PTR ((GENERIC_PTR)0)
309 #ifndef INCLUDE_LEN_FUDGE
310 #define INCLUDE_LEN_FUDGE 0
313 /* External declarations. */
315 extern char *version_string;
317 #ifndef HAVE_STRERROR
320 extern const char *const sys_errlist[];
322 extern char *sys_errlist[];
324 #else /* HAVE_STERRROR */
328 char *strerror (int,...);
330 int parse_escape PROTO((char **));
331 HOST_WIDE_INT parse_c_expression PROTO((char *));
337 #ifndef FAILURE_EXIT_CODE
338 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
341 #ifndef SUCCESS_EXIT_CODE
342 #define SUCCESS_EXIT_CODE 0 /* 0 means success on Unix. */
345 /* Name under which this program was invoked. */
347 static char *progname;
349 /* Nonzero means use extra default include directories for C++. */
351 static int cplusplus;
353 /* Nonzero means handle cplusplus style comments */
355 static int cplusplus_comments;
357 /* Nonzero means handle #import, for objective C. */
361 /* Nonzero means this is an assembly file, and allow
362 unknown directives, which could be comments. */
366 /* Current maximum length of directory names in the search path
367 for include files. (Altered as we get more of them.) */
369 static int max_include_len;
371 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
373 static int for_lint = 0;
375 /* Nonzero means copy comments into the output file. */
377 static int put_out_comments = 0;
379 /* Nonzero means don't process the ANSI trigraph sequences. */
381 static int no_trigraphs = 0;
383 /* Nonzero means print the names of included files rather than
384 the preprocessed output. 1 means just the #include "...",
385 2 means #include <...> as well. */
387 static int print_deps = 0;
389 /* Nonzero if missing .h files in -M output are assumed to be generated
390 files and not errors. */
392 static int print_deps_missing_files = 0;
394 /* Nonzero means print names of header files (-H). */
396 static int print_include_names = 0;
398 /* Nonzero means don't output line number information. */
400 static int no_line_directives;
402 /* Nonzero means output the text in failing conditionals,
403 inside #failed ... #endfailed. */
405 static int output_conditionals;
407 /* dump_only means inhibit output of the preprocessed text
408 and instead output the definitions of all user-defined
409 macros in a form suitable for use as input to cccp.
410 dump_names means pass #define and the macro name through to output.
411 dump_definitions means pass the whole definition (plus #define) through
414 static enum {dump_none, dump_only, dump_names, dump_definitions}
415 dump_macros = dump_none;
417 /* Nonzero means pass all #define and #undef directives which we actually
418 process through to the output stream. This feature is used primarily
419 to allow cc1 to record the #defines and #undefs for the sake of
420 debuggers which understand about preprocessor macros, but it may
421 also be useful with -E to figure out how symbols are defined, and
422 where they are defined. */
423 static int debug_output = 0;
425 /* Nonzero indicates special processing used by the pcp program. The
426 special effects of this mode are:
428 Inhibit all macro expansion, except those inside #if directives.
430 Process #define directives normally, and output their contents
433 Output preconditions to pcp_outfile indicating all the relevant
434 preconditions for use of this file in a later cpp run.
436 static FILE *pcp_outfile;
438 /* Nonzero means we are inside an IF during a -pcp run. In this mode
439 macro expansion is done, and preconditions are output for all macro
440 uses requiring them. */
441 static int pcp_inside_if;
443 /* Nonzero means never to include precompiled files.
444 This is 1 since there's no way now to make precompiled files,
445 so it's not worth testing for them. */
446 static int no_precomp = 1;
448 /* Nonzero means give all the error messages the ANSI standard requires. */
452 /* Nonzero means try to make failure to fit ANSI C an error. */
454 static int pedantic_errors;
456 /* Nonzero means don't print warning messages. -w. */
458 static int inhibit_warnings = 0;
460 /* Nonzero means warn if slash-star appears in a comment. */
462 static int warn_comments;
464 /* Nonzero means warn if a macro argument is (or would be)
465 stringified with -traditional. */
467 static int warn_stringify;
469 /* Nonzero means warn if there are any trigraphs. */
471 static int warn_trigraphs;
473 /* Nonzero means warn if #import is used. */
475 static int warn_import = 1;
477 /* Nonzero means turn warnings into errors. */
479 static int warnings_are_errors;
481 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
485 /* Nonzero causes output not to be done,
486 but directives such as #define that have side effects
489 static int no_output;
491 /* Nonzero means this file was included with a -imacros or -include
492 command line and should not be recorded as an include file. */
494 static int no_record_file;
496 /* Nonzero means that we have finished processing the command line options.
497 This flag is used to decide whether or not to issue certain errors
500 static int done_initializing = 0;
502 /* Line where a newline was first seen in a string constant. */
504 static int multiline_string_line = 0;
506 /* I/O buffer structure.
507 The `fname' field is nonzero for source files and #include files
508 and for the dummy text used for -D and -U.
509 It is zero for rescanning results of macro expansion
510 and for expanding macro arguments. */
511 #define INPUT_STACK_MAX 400
512 static struct file_buf {
514 /* Filename specified with #line directive. */
516 /* Record where in the search path this file was found.
517 For #include_next. */
518 struct file_name_list *dir;
523 /* Macro that this level is the expansion of.
524 Included so that we can reenable the macro
525 at the end of this level. */
526 struct hashnode *macro;
527 /* Value of if_stack at start of this file.
528 Used to prohibit unmatched #endif (etc) in an include file. */
529 struct if_stack *if_stack;
530 /* Object to be freed at end of input at this level. */
532 /* True if this is a header file included using <FILENAME>. */
533 char system_header_p;
534 } instack[INPUT_STACK_MAX];
536 static int last_error_tick; /* Incremented each time we print it. */
537 static int input_file_stack_tick; /* Incremented when the status changes. */
539 /* Current nesting level of input sources.
540 `instack[indepth]' is the level currently being read. */
541 static int indepth = -1;
542 #define CHECK_DEPTH(code) \
543 if (indepth >= (INPUT_STACK_MAX - 1)) \
545 error_with_line (line_for_error (instack[indepth].lineno), \
546 "macro or `#include' recursion too deep"); \
550 /* Current depth in #include directives that use <...>. */
551 static int system_include_depth = 0;
553 typedef struct file_buf FILE_BUF;
555 /* The output buffer. Its LENGTH field is the amount of room allocated
556 for the buffer, not the number of chars actually present. To get
557 that, subtract outbuf.buf from outbuf.bufp. */
559 #define OUTBUF_SIZE 10 /* initial size of output buffer */
560 static FILE_BUF outbuf;
562 /* Grow output buffer OBUF points at
563 so it can hold at least NEEDED more chars. */
565 #define check_expand(OBUF, NEEDED) \
566 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
567 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
569 struct file_name_list
571 struct file_name_list *next;
573 /* If the following is nonzero, it is a macro name.
574 Don't include the file again if that macro is defined. */
575 U_CHAR *control_macro;
576 /* If the following is nonzero, it is a C-language system include
578 int c_system_include_path;
579 /* Mapping of file names for this directory. */
580 struct file_name_map *name_map;
581 /* Non-zero if name_map is valid. */
585 /* #include "file" looks in source file dir, then stack. */
586 /* #include <file> just looks in the stack. */
587 /* -I directories are added to the end, then the defaults are added. */
589 static struct default_include {
590 char *fname; /* The name of the directory. */
591 int cplusplus; /* Only look here if we're compiling C++. */
592 int cxx_aware; /* Includes in this directory don't need to
593 be wrapped in extern "C" when compiling
595 } include_defaults_array[]
596 #ifdef INCLUDE_DEFAULTS
600 /* Pick up GNU C++ specific include files. */
601 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
603 /* This is the dir for fixincludes. Put it just before
604 the files that we fix. */
605 { GCC_INCLUDE_DIR, 0, 0 },
606 /* For cross-compilation, this dir name is generated
607 automatically in Makefile.in. */
608 { CROSS_INCLUDE_DIR, 0, 0 },
609 /* This is another place that the target system's headers might be. */
610 { TOOL_INCLUDE_DIR, 0, 0 },
611 #else /* not CROSS_COMPILE */
612 /* This should be /usr/local/include and should come before
613 the fixincludes-fixed header files. */
614 { LOCAL_INCLUDE_DIR, 0, 1 },
615 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
616 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
617 { TOOL_INCLUDE_DIR, 0, 0 },
618 /* This is the dir for fixincludes. Put it just before
619 the files that we fix. */
620 { GCC_INCLUDE_DIR, 0, 0 },
621 /* Some systems have an extra dir of include files. */
622 #ifdef SYSTEM_INCLUDE_DIR
623 { SYSTEM_INCLUDE_DIR, 0, 0 },
625 { STANDARD_INCLUDE_DIR, 0, 0 },
626 #endif /* not CROSS_COMPILE */
629 #endif /* no INCLUDE_DEFAULTS */
631 /* The code looks at the defaults through this pointer, rather than through
632 the constant structure above. This pointer gets changed if an environment
633 variable specifies other defaults. */
634 static struct default_include *include_defaults = include_defaults_array;
636 static struct file_name_list *include = 0; /* First dir to search */
637 /* First dir to search for <file> */
638 /* This is the first element to use for #include <...>.
639 If it is 0, use the entire chain for such includes. */
640 static struct file_name_list *first_bracket_include = 0;
641 /* This is the first element in the chain that corresponds to
642 a directory of system header files. */
643 static struct file_name_list *first_system_include = 0;
644 static struct file_name_list *last_include = 0; /* Last in chain */
646 /* Chain of include directories to put at the end of the other chain. */
647 static struct file_name_list *after_include = 0;
648 static struct file_name_list *last_after_include = 0; /* Last in chain */
650 /* Chain to put at the start of the system include files. */
651 static struct file_name_list *before_system = 0;
652 static struct file_name_list *last_before_system = 0; /* Last in chain */
654 /* List of included files that contained #pragma once. */
655 static struct file_name_list *dont_repeat_files = 0;
657 /* List of other included files.
658 If ->control_macro if nonzero, the file had a #ifndef
659 around the entire contents, and ->control_macro gives the macro name. */
660 static struct file_name_list *all_include_files = 0;
662 /* Directory prefix that should replace `/usr' in the standard
663 include file directories. */
664 static char *include_prefix;
666 /* Global list of strings read in from precompiled files. This list
667 is kept in the order the strings are read in, with new strings being
668 added at the end through stringlist_tailp. We use this list to output
669 the strings at the end of the run.
671 static STRINGDEF *stringlist;
672 static STRINGDEF **stringlist_tailp = &stringlist;
675 /* Structure returned by create_definition */
676 typedef struct macrodef MACRODEF;
679 struct definition *defn;
684 enum sharp_token_type {
685 NO_SHARP_TOKEN, /* token not present */
687 SHARP_TOKEN = '#', /* token spelled with # only */
688 WHITE_SHARP_TOKEN, /* token spelled with # and white space */
690 PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
691 WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
694 /* Structure allocated for every #define. For a simple replacement
697 nargs = -1, the `pattern' list is null, and the expansion is just
698 the replacement text. Nargs = 0 means a functionlike macro with no args,
700 #define getchar() getc (stdin) .
701 When there are args, the expansion is the replacement text with the
702 args squashed out, and the reflist is a list describing how to
703 build the output from the input: e.g., "3 chars, then the 1st arg,
704 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
705 The chars here come from the expansion. Whatever is left of the
706 expansion after the last arg-occurrence is copied after that arg.
707 Note that the reflist can be arbitrarily long---
708 its length depends on the number of times the arguments appear in
709 the replacement text, not how many args there are. Example:
710 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
712 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
713 where (x, y) means (nchars, argno). */
715 typedef struct definition DEFINITION;
718 int length; /* length of expansion string */
719 int predefined; /* True if the macro was builtin or */
720 /* came from the command line */
722 int line; /* Line number of definition */
723 char *file; /* File of definition */
724 char rest_args; /* Nonzero if last arg. absorbs the rest */
726 struct reflist *next;
728 enum sharp_token_type stringify; /* set if a # operator before arg */
729 enum sharp_token_type raw_before; /* set if a ## operator before arg */
730 enum sharp_token_type raw_after; /* set if a ## operator after arg */
732 char rest_args; /* Nonzero if this arg. absorbs the rest */
733 int nchars; /* Number of literal chars to copy before
734 this arg occurrence. */
735 int argno; /* Number of arg to substitute (origin-0) */
738 /* Names of macro args, concatenated in reverse order
739 with comma-space between them.
740 The only use of this is that we warn on redefinition
741 if this differs between the old and new definitions. */
746 /* different kinds of things that can appear in the value field
747 of a hash node. Actually, this may be useless now. */
755 * special extension string that can be added to the last macro argument to
756 * allow it to absorb the "rest" of the arguments when expanded. Ex:
757 * #define wow(a, b...) process (b, a, b)
758 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
759 * { wow (one, two); } -> { process (two, one, two); }
760 * if this "rest_arg" is used with the concat token '##' and if it is not
761 * supplied then the token attached to with ## will not be outputted. Ex:
762 * #define wow (a, b...) process (b ## , a, ## b)
763 * { wow (1, 2); } -> { process (2, 1, 2); }
764 * { wow (one); } -> { process (one); {
766 static char rest_extension[] = "...";
767 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
769 /* The structure of a node in the hash table. The hash table
770 has entries for all tokens defined by #define directives (type T_MACRO),
771 plus some special tokens like __LINE__ (these each have their own
772 type, and the appropriate code is run when that type of node is seen.
773 It does not contain control words like "#define", which are recognized
774 by a separate piece of code. */
776 /* different flavors of hash nodes --- also used in keyword table */
778 T_DEFINE = 1, /* the `#define' keyword */
779 T_INCLUDE, /* the `#include' keyword */
780 T_INCLUDE_NEXT, /* the `#include_next' keyword */
781 T_IMPORT, /* the `#import' keyword */
782 T_IFDEF, /* the `#ifdef' keyword */
783 T_IFNDEF, /* the `#ifndef' keyword */
784 T_IF, /* the `#if' keyword */
785 T_ELSE, /* `#else' */
786 T_PRAGMA, /* `#pragma' */
787 T_ELIF, /* `#elif' */
788 T_UNDEF, /* `#undef' */
789 T_LINE, /* `#line' */
790 T_ERROR, /* `#error' */
791 T_WARNING, /* `#warning' */
792 T_ENDIF, /* `#endif' */
793 T_SCCS, /* `#sccs', used on system V. */
794 T_IDENT, /* `#ident', used on system V. */
795 T_ASSERT, /* `#assert', taken from system V. */
796 T_UNASSERT, /* `#unassert', taken from system V. */
797 T_SPECLINE, /* special symbol `__LINE__' */
798 T_DATE, /* `__DATE__' */
799 T_FILE, /* `__FILE__' */
800 T_BASE_FILE, /* `__BASE_FILE__' */
801 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
802 T_VERSION, /* `__VERSION__' */
803 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
804 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
805 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
806 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
807 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
808 T_TIME, /* `__TIME__' */
809 T_CONST, /* Constant value, used by `__STDC__' */
810 T_MACRO, /* macro defined by `#define' */
811 T_DISABLED, /* macro temporarily turned off for rescan */
812 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
813 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
814 T_UNUSED /* Used for something not defined. */
818 struct hashnode *next; /* double links for easy deletion */
819 struct hashnode *prev;
820 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
821 chain is kept, in case the node is the head
822 of the chain and gets deleted. */
823 enum node_type type; /* type of special token */
824 int length; /* length of token, for quick comparison */
825 U_CHAR *name; /* the actual name */
826 union hashval value; /* pointer to expansion, or whatever */
829 typedef struct hashnode HASHNODE;
831 /* Some definitions for the hash table. The hash function MUST be
832 computed as shown in hashf () below. That is because the rescan
833 loop computes the hash value `on the fly' for most tokens,
834 in order to avoid the overhead of a lot of procedure calls to
835 the hashf () function. Hashf () only exists for the sake of
836 politeness, for use when speed isn't so important. */
838 #define HASHSIZE 1403
839 static HASHNODE *hashtab[HASHSIZE];
840 #define HASHSTEP(old, c) ((old << 2) + c)
841 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
843 /* Symbols to predefine. */
845 #ifdef CPP_PREDEFINES
846 static char *predefs = CPP_PREDEFINES;
848 static char *predefs = "";
851 /* We let tm.h override the types used here, to handle trivial differences
852 such as the choice of unsigned int or long unsigned int for size_t.
853 When machines start needing nontrivial differences in the size type,
854 it would be best to do something here to figure out automatically
855 from other information what type to use. */
857 /* The string value for __SIZE_TYPE__. */
860 #define SIZE_TYPE "long unsigned int"
863 /* The string value for __PTRDIFF_TYPE__. */
866 #define PTRDIFF_TYPE "long int"
869 /* The string value for __WCHAR_TYPE__. */
872 #define WCHAR_TYPE "int"
874 char * wchar_type = WCHAR_TYPE;
877 /* The string value for __USER_LABEL_PREFIX__ */
879 #ifndef USER_LABEL_PREFIX
880 #define USER_LABEL_PREFIX ""
883 /* The string value for __REGISTER_PREFIX__ */
885 #ifndef REGISTER_PREFIX
886 #define REGISTER_PREFIX ""
889 /* In the definition of a #assert name, this structure forms
890 a list of the individual values asserted.
891 Each value is itself a list of "tokens".
892 These are strings that are compared by name. */
894 struct tokenlist_list {
895 struct tokenlist_list *next;
896 struct arglist *tokens;
899 struct assertion_hashnode {
900 struct assertion_hashnode *next; /* double links for easy deletion */
901 struct assertion_hashnode *prev;
902 /* also, a back pointer to this node's hash
903 chain is kept, in case the node is the head
904 of the chain and gets deleted. */
905 struct assertion_hashnode **bucket_hdr;
906 int length; /* length of token, for quick comparison */
907 U_CHAR *name; /* the actual name */
908 /* List of token-sequences. */
909 struct tokenlist_list *value;
912 typedef struct assertion_hashnode ASSERTION_HASHNODE;
914 /* Some definitions for the hash table. The hash function MUST be
915 computed as shown in hashf below. That is because the rescan
916 loop computes the hash value `on the fly' for most tokens,
917 in order to avoid the overhead of a lot of procedure calls to
918 the hashf function. hashf only exists for the sake of
919 politeness, for use when speed isn't so important. */
921 #define ASSERTION_HASHSIZE 37
922 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
924 /* Nonzero means inhibit macroexpansion of what seem to be
925 assertion tests, in rescan. For #if. */
926 static int assertions_flag;
928 /* `struct directive' defines one #-directive, including how to handle it. */
930 #define DO_PROTO PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *))
933 int length; /* Length of name */
934 int (*func) DO_PROTO; /* Function to handle directive */
935 char *name; /* Name of directive */
936 enum node_type type; /* Code which describes which directive. */
937 char angle_brackets; /* Nonzero => <...> is special. */
938 char traditional_comments; /* Nonzero: keep comments if -traditional. */
939 char pass_thru; /* Copy preprocessed directive to output file. */
942 /* These functions are declared to return int instead of void since they
943 are going to be placed in the table and some old compilers have trouble with
944 pointers to functions returning void. */
946 static int do_assert DO_PROTO;
947 static int do_define DO_PROTO;
948 static int do_elif DO_PROTO;
949 static int do_else DO_PROTO;
950 static int do_endif DO_PROTO;
951 static int do_error DO_PROTO;
952 static int do_ident DO_PROTO;
953 static int do_if DO_PROTO;
954 static int do_include DO_PROTO;
955 static int do_line DO_PROTO;
956 static int do_pragma DO_PROTO;
957 #ifdef SCCS_DIRECTIVE
958 static int do_sccs DO_PROTO;
960 static int do_unassert DO_PROTO;
961 static int do_undef DO_PROTO;
962 static int do_warning DO_PROTO;
963 static int do_xifdef DO_PROTO;
965 /* Here is the actual list of #-directives, most-often-used first. */
967 static struct directive directive_table[] = {
968 { 6, do_define, "define", T_DEFINE, 0, 1},
969 { 2, do_if, "if", T_IF},
970 { 5, do_xifdef, "ifdef", T_IFDEF},
971 { 6, do_xifdef, "ifndef", T_IFNDEF},
972 { 5, do_endif, "endif", T_ENDIF},
973 { 4, do_else, "else", T_ELSE},
974 { 4, do_elif, "elif", T_ELIF},
975 { 4, do_line, "line", T_LINE},
976 { 7, do_include, "include", T_INCLUDE, 1},
977 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
978 { 6, do_include, "import", T_IMPORT, 1},
979 { 5, do_undef, "undef", T_UNDEF},
980 { 5, do_error, "error", T_ERROR},
981 { 7, do_warning, "warning", T_WARNING},
982 #ifdef SCCS_DIRECTIVE
983 { 4, do_sccs, "sccs", T_SCCS},
985 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
986 { 5, do_ident, "ident", T_IDENT},
987 { 6, do_assert, "assert", T_ASSERT},
988 { 8, do_unassert, "unassert", T_UNASSERT},
989 { -1, 0, "", T_UNUSED},
992 /* When a directive handler is called,
993 this points to the # (or the : of the %:) that started the directive. */
994 U_CHAR *directive_start;
996 /* table to tell if char can be part of a C identifier. */
997 U_CHAR is_idchar[256];
998 /* table to tell if char can be first char of a c identifier. */
999 U_CHAR is_idstart[256];
1000 /* table to tell if c is horizontal space. */
1001 U_CHAR is_hor_space[256];
1002 /* table to tell if c is horizontal or vertical space. */
1003 static U_CHAR is_space[256];
1004 /* names of some characters */
1005 static char *char_name[256];
1007 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
1008 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
1010 static int errors = 0; /* Error counter for exit code */
1012 /* Name of output file, for error messages. */
1013 static char *out_fname;
1015 /* Zero means dollar signs are punctuation.
1016 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
1017 This must be 0 for correct processing of this ANSI C program:
1019 #define lose(b) foo (b)
1022 static int dollars_in_ident;
1023 #ifndef DOLLARS_IN_IDENTIFIERS
1024 #define DOLLARS_IN_IDENTIFIERS 1
1028 /* Stack of conditionals currently in progress
1029 (including both successful and failing conditionals). */
1032 struct if_stack *next; /* for chaining to the next stack frame */
1033 char *fname; /* copied from input when frame is made */
1034 int lineno; /* similarly */
1035 int if_succeeded; /* true if a leg of this if-group
1036 has been passed through rescan */
1037 U_CHAR *control_macro; /* For #ifndef at start of file,
1038 this is the macro name tested. */
1039 enum node_type type; /* type of last directive seen in this group */
1041 typedef struct if_stack IF_STACK_FRAME;
1042 static IF_STACK_FRAME *if_stack = NULL;
1044 /* Buffer of -M output. */
1045 static char *deps_buffer;
1047 /* Number of bytes allocated in above. */
1048 static int deps_allocated_size;
1050 /* Number of bytes used. */
1051 static int deps_size;
1053 /* Number of bytes since the last newline. */
1054 static int deps_column;
1056 /* Nonzero means -I- has been seen,
1057 so don't look for #include "foo" the source-file directory. */
1058 static int ignore_srcdir;
1060 static int safe_read PROTO((int, char *, int));
1061 static void safe_write PROTO((int, char *, int));
1063 int main PROTO((int, char **));
1065 static void path_include PROTO((char *));
1067 static U_CHAR *index0 PROTO((U_CHAR *, int, size_t));
1069 static void trigraph_pcp PROTO((FILE_BUF *));
1071 static void newline_fix PROTO((U_CHAR *));
1072 static void name_newline_fix PROTO((U_CHAR *));
1074 static char *get_lintcmd PROTO((U_CHAR *, U_CHAR *, U_CHAR **, int *, int *));
1076 static void rescan PROTO((FILE_BUF *, int));
1078 static FILE_BUF expand_to_temp_buffer PROTO((U_CHAR *, U_CHAR *, int, int));
1080 static int handle_directive PROTO((FILE_BUF *, FILE_BUF *));
1082 static struct tm *timestamp PROTO((void));
1083 static void special_symbol PROTO((HASHNODE *, FILE_BUF *));
1085 static int redundant_include_p PROTO((char *));
1086 static is_system_include PROTO((char *));
1088 static char *read_filename_string PROTO((int, FILE *));
1089 static struct file_name_map *read_name_map PROTO((char *));
1090 static int open_include_file PROTO((char *, struct file_name_list *));
1092 static void finclude PROTO((int, char *, FILE_BUF *, int, struct file_name_list *));
1093 static void record_control_macro PROTO((char *, U_CHAR *));
1095 static int import_hash PROTO((char *));
1096 static int lookup_import PROTO((char *, struct file_name_list *));
1097 static void add_import PROTO((int, char *));
1099 static char *check_precompiled PROTO((int, char *, char **));
1100 static int check_preconditions PROTO((char *));
1101 static void pcfinclude PROTO((U_CHAR *, U_CHAR *, U_CHAR *, FILE_BUF *));
1102 static void pcstring_used PROTO((HASHNODE *));
1103 static void write_output PROTO((void));
1104 static void pass_thru_directive PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *));
1106 static MACRODEF create_definition PROTO((U_CHAR *, U_CHAR *, FILE_BUF *));
1108 static int check_macro_name PROTO((U_CHAR *, char *));
1109 static int compare_defs PROTO((DEFINITION *, DEFINITION *));
1110 static int comp_def_part PROTO((int, U_CHAR *, int, U_CHAR *, int, int));
1112 static DEFINITION *collect_expansion PROTO((U_CHAR *, U_CHAR *, int, struct arglist *));
1114 int check_assertion PROTO((U_CHAR *, int, int, struct arglist *));
1115 static int compare_token_lists PROTO((struct arglist *, struct arglist *));
1117 static struct arglist *read_token_list PROTO((U_CHAR **, U_CHAR *, int *));
1118 static void free_token_list PROTO((struct arglist *));
1120 static ASSERTION_HASHNODE *assertion_install PROTO((U_CHAR *, int, int));
1121 static ASSERTION_HASHNODE *assertion_lookup PROTO((U_CHAR *, int, int));
1122 static void delete_assertion PROTO((ASSERTION_HASHNODE *));
1124 static void do_once PROTO((void));
1126 static HOST_WIDE_INT eval_if_expression PROTO((U_CHAR *, int));
1127 static void conditional_skip PROTO((FILE_BUF *, int, enum node_type, U_CHAR *, FILE_BUF *));
1128 static void skip_if_group PROTO((FILE_BUF *, int, FILE_BUF *));
1129 static void validate_else PROTO((U_CHAR *));
1131 static U_CHAR *skip_to_end_of_comment PROTO((FILE_BUF *, int *, int));
1132 static U_CHAR *skip_quoted_string PROTO((U_CHAR *, U_CHAR *, int, int *, int *, int *));
1133 static char *quote_string PROTO((char *, char *));
1134 static U_CHAR *skip_paren_group PROTO((FILE_BUF *));
1136 /* Last arg to output_line_directive. */
1137 enum file_change_code {same_file, enter_file, leave_file};
1138 static void output_line_directive PROTO((FILE_BUF *, FILE_BUF *, int, enum file_change_code));
1140 static void macroexpand PROTO((HASHNODE *, FILE_BUF *));
1143 static char *macarg PROTO((struct argdata *, int));
1145 static U_CHAR *macarg1 PROTO((U_CHAR *, U_CHAR *, int *, int *, int *, int));
1147 static int discard_comments PROTO((U_CHAR *, int, int));
1149 static int change_newlines PROTO((U_CHAR *, int));
1151 char *my_strerror PROTO((int));
1152 void error PRINTF_PROTO_1((char *, ...));
1153 static void verror PROTO((char *, va_list));
1154 static void error_from_errno PROTO((char *));
1155 void warning PRINTF_PROTO_1((char *, ...));
1156 static void vwarning PROTO((char *, va_list));
1157 static void error_with_line PRINTF_PROTO_2((int, char *, ...));
1158 static void verror_with_line PROTO((int, char *, va_list));
1159 static void vwarning_with_line PROTO((int, char *, va_list));
1160 void pedwarn PRINTF_PROTO_1((char *, ...));
1161 void pedwarn_with_line PRINTF_PROTO_2((int, char *, ...));
1162 static void pedwarn_with_file_and_line PRINTF_PROTO_3((char *, int, char *, ...));
1164 static void print_containing_files PROTO((void));
1166 static int line_for_error PROTO((int));
1167 static int grow_outbuf PROTO((FILE_BUF *, int));
1169 static HASHNODE *install PROTO((U_CHAR *, int, enum node_type, char *, int));
1170 HASHNODE *lookup PROTO((U_CHAR *, int, int));
1171 static void delete_macro PROTO((HASHNODE *));
1172 static int hashf PROTO((U_CHAR *, int, int));
1174 static void dump_single_macro PROTO((HASHNODE *, FILE *));
1175 static void dump_all_macros PROTO((void));
1176 static void dump_defn_1 PROTO((U_CHAR *, int, int, FILE *));
1177 static void dump_arg_n PROTO((DEFINITION *, int, FILE *));
1179 static void initialize_char_syntax PROTO((void));
1180 static void initialize_builtins PROTO((FILE_BUF *, FILE_BUF *));
1182 static void make_definition PROTO((char *, FILE_BUF *));
1183 static void make_undef PROTO((char *, FILE_BUF *));
1185 static void make_assertion PROTO((char *, char *));
1187 static void append_include_chain PROTO((struct file_name_list *, struct file_name_list *));
1189 static void deps_output PROTO((char *, int));
1191 static void fatal PRINTF_PROTO_1((char *, ...)) __attribute__ ((noreturn));
1192 void fancy_abort PROTO((void)) __attribute__ ((noreturn));
1193 static void perror_with_name PROTO((char *));
1194 static void pfatal_with_name PROTO((char *)) __attribute__ ((noreturn));
1195 static void pipe_closed PROTO((int)) __attribute__ ((noreturn));
1197 static void memory_full PROTO((void)) __attribute__ ((noreturn));
1198 GENERIC_PTR xmalloc PROTO((size_t));
1199 static GENERIC_PTR xrealloc PROTO((GENERIC_PTR, size_t));
1200 static GENERIC_PTR xcalloc PROTO((size_t, size_t));
1201 static char *savestring PROTO((char *));
1203 static int file_size_and_mode PROTO((int, int *, long int *));
1204 static void output_dots PROTO((FILE *, int));
1206 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1207 retrying if necessary. Return a negative value if an error occurs,
1208 otherwise return the actual number of bytes read,
1209 which must be LEN unless end-of-file was reached. */
1212 safe_read (desc, ptr, len)
1219 int nchars = read (desc, ptr, left);
1236 /* Write LEN bytes at PTR to descriptor DESC,
1237 retrying if necessary, and treating any real error as fatal. */
1240 safe_write (desc, ptr, len)
1246 int written = write (desc, ptr, len);
1253 pfatal_with_name (out_fname);
1271 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1272 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1273 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1274 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1275 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1277 /* Record the option used with each element of pend_assertions.
1278 This is preparation for supporting more than one option for making
1280 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1281 int inhibit_predefs = 0;
1282 int no_standard_includes = 0;
1283 int no_standard_cplusplus_includes = 0;
1284 int missing_newline = 0;
1286 /* Non-0 means don't output the preprocessed program. */
1287 int inhibit_output = 0;
1288 /* Non-0 means -v, so print the full set of include dirs. */
1291 /* File name which deps are being written to.
1292 This is 0 if deps are being written to stdout. */
1293 char *deps_file = 0;
1294 /* Fopen file mode to open deps_file with. */
1295 char *deps_mode = "a";
1296 /* Stream on which to print the dependency information. */
1297 FILE *deps_stream = 0;
1298 /* Target-name to write with the dependency information. */
1299 char *deps_target = 0;
1302 /* Get rid of any avoidable limit on stack size. */
1306 /* Set the stack limit huge so that alloca (particularly stringtab
1307 * in dbxread.c) does not fail. */
1308 getrlimit (RLIMIT_STACK, &rlim);
1309 rlim.rlim_cur = rlim.rlim_max;
1310 setrlimit (RLIMIT_STACK, &rlim);
1312 #endif /* RLIMIT_STACK defined */
1315 signal (SIGPIPE, pipe_closed);
1318 cp = argv[0] + strlen (argv[0]);
1319 while (cp != argv[0] && cp[-1] != '/'
1320 #ifdef DIR_SEPARATOR
1321 && cp[-1] != DIR_SEPARATOR
1329 /* Remove directories from PROGNAME. */
1333 if ((p = rindex (s, ':')) != 0) s = p + 1; /* skip device */
1334 if ((p = rindex (s, ']')) != 0) s = p + 1; /* skip directory */
1335 if ((p = rindex (s, '>')) != 0) s = p + 1; /* alternate (int'n'l) dir */
1336 s = progname = savestring (s);
1337 if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
1338 if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
1339 && (p[1] == 'e' || p[1] == 'E')
1340 && (p[2] == 'x' || p[2] == 'X')
1341 && (p[3] == 'e' || p[3] == 'E')
1350 /* Initialize is_idchar to allow $. */
1351 dollars_in_ident = 1;
1352 initialize_char_syntax ();
1353 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1355 no_line_directives = 0;
1357 dump_macros = dump_none;
1360 cplusplus_comments = 0;
1362 bzero ((char *) pend_files, argc * sizeof (char *));
1363 bzero ((char *) pend_defs, argc * sizeof (char *));
1364 bzero ((char *) pend_undefs, argc * sizeof (char *));
1365 bzero ((char *) pend_assertions, argc * sizeof (char *));
1366 bzero ((char *) pend_includes, argc * sizeof (char *));
1368 /* Process switches and find input file name. */
1370 for (i = 1; i < argc; i++) {
1371 if (argv[i][0] != '-') {
1372 if (out_fname != NULL)
1373 fatal ("Usage: %s [switches] input output", argv[0]);
1374 else if (in_fname != NULL)
1375 out_fname = argv[i];
1379 switch (argv[i][1]) {
1382 if (!strcmp (argv[i], "-include")) {
1384 fatal ("Filename missing after `-include' option");
1386 pend_includes[i] = argv[i+1], i++;
1388 if (!strcmp (argv[i], "-imacros")) {
1390 fatal ("Filename missing after `-imacros' option");
1392 pend_files[i] = argv[i+1], i++;
1394 if (!strcmp (argv[i], "-iprefix")) {
1396 fatal ("Filename missing after `-iprefix' option");
1398 include_prefix = argv[++i];
1400 if (!strcmp (argv[i], "-ifoutput")) {
1401 output_conditionals = 1;
1403 if (!strcmp (argv[i], "-isystem")) {
1404 struct file_name_list *dirtmp;
1407 fatal ("Filename missing after `-isystem' option");
1409 dirtmp = (struct file_name_list *)
1410 xmalloc (sizeof (struct file_name_list));
1412 dirtmp->control_macro = 0;
1413 dirtmp->c_system_include_path = 1;
1414 dirtmp->fname = xmalloc (strlen (argv[i+1]) + 1);
1415 strcpy (dirtmp->fname, argv[++i]);
1416 dirtmp->got_name_map = 0;
1418 if (before_system == 0)
1419 before_system = dirtmp;
1421 last_before_system->next = dirtmp;
1422 last_before_system = dirtmp; /* Tail follows the last one */
1424 /* Add directory to end of path for includes,
1425 with the default prefix at the front of its name. */
1426 if (!strcmp (argv[i], "-iwithprefix")) {
1427 struct file_name_list *dirtmp;
1430 if (include_prefix != 0)
1431 prefix = include_prefix;
1433 prefix = savestring (GCC_INCLUDE_DIR);
1434 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1435 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1436 prefix[strlen (prefix) - 7] = 0;
1439 dirtmp = (struct file_name_list *)
1440 xmalloc (sizeof (struct file_name_list));
1441 dirtmp->next = 0; /* New one goes on the end */
1442 dirtmp->control_macro = 0;
1443 dirtmp->c_system_include_path = 0;
1445 fatal ("Directory name missing after `-iwithprefix' option");
1447 dirtmp->fname = xmalloc (strlen (argv[i+1]) + strlen (prefix) + 1);
1448 strcpy (dirtmp->fname, prefix);
1449 strcat (dirtmp->fname, argv[++i]);
1450 dirtmp->got_name_map = 0;
1452 if (after_include == 0)
1453 after_include = dirtmp;
1455 last_after_include->next = dirtmp;
1456 last_after_include = dirtmp; /* Tail follows the last one */
1458 /* Add directory to main path for includes,
1459 with the default prefix at the front of its name. */
1460 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1461 struct file_name_list *dirtmp;
1464 if (include_prefix != 0)
1465 prefix = include_prefix;
1467 prefix = savestring (GCC_INCLUDE_DIR);
1468 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1469 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1470 prefix[strlen (prefix) - 7] = 0;
1473 dirtmp = (struct file_name_list *)
1474 xmalloc (sizeof (struct file_name_list));
1475 dirtmp->next = 0; /* New one goes on the end */
1476 dirtmp->control_macro = 0;
1477 dirtmp->c_system_include_path = 0;
1479 fatal ("Directory name missing after `-iwithprefixbefore' option");
1481 dirtmp->fname = xmalloc (strlen (argv[i+1]) + strlen (prefix) + 1);
1482 strcpy (dirtmp->fname, prefix);
1483 strcat (dirtmp->fname, argv[++i]);
1484 dirtmp->got_name_map = 0;
1486 append_include_chain (dirtmp, dirtmp);
1488 /* Add directory to end of path for includes. */
1489 if (!strcmp (argv[i], "-idirafter")) {
1490 struct file_name_list *dirtmp;
1492 dirtmp = (struct file_name_list *)
1493 xmalloc (sizeof (struct file_name_list));
1494 dirtmp->next = 0; /* New one goes on the end */
1495 dirtmp->control_macro = 0;
1496 dirtmp->c_system_include_path = 0;
1498 fatal ("Directory name missing after `-idirafter' option");
1500 dirtmp->fname = argv[++i];
1501 dirtmp->got_name_map = 0;
1503 if (after_include == 0)
1504 after_include = dirtmp;
1506 last_after_include->next = dirtmp;
1507 last_after_include = dirtmp; /* Tail follows the last one */
1512 if (out_fname != NULL)
1513 fatal ("Output filename specified twice");
1515 fatal ("Filename missing after -o option");
1516 out_fname = argv[++i];
1517 if (!strcmp (out_fname, "-"))
1522 if (!strcmp (argv[i], "-pedantic"))
1524 else if (!strcmp (argv[i], "-pedantic-errors")) {
1526 pedantic_errors = 1;
1527 } else if (!strcmp (argv[i], "-pcp")) {
1530 fatal ("Filename missing after -pcp option");
1531 pcp_fname = argv[++i];
1533 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1534 ? fopen (pcp_fname, "w")
1536 if (pcp_outfile == 0)
1537 pfatal_with_name (pcp_fname);
1543 if (!strcmp (argv[i], "-traditional")) {
1545 if (dollars_in_ident > 0)
1546 dollars_in_ident = 1;
1547 } else if (!strcmp (argv[i], "-trigraphs")) {
1553 if (! strcmp (argv[i], "-lang-c"))
1554 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1555 if (! strcmp (argv[i], "-lang-c++"))
1556 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1557 if (! strcmp (argv[i], "-lang-c-c++-comments"))
1558 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1559 if (! strcmp (argv[i], "-lang-objc"))
1560 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1561 if (! strcmp (argv[i], "-lang-objc++"))
1562 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1563 if (! strcmp (argv[i], "-lang-asm"))
1565 if (! strcmp (argv[i], "-lint"))
1570 cplusplus = 1, cplusplus_comments = 1;
1574 inhibit_warnings = 1;
1578 if (!strcmp (argv[i], "-Wtrigraphs"))
1580 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1582 else if (!strcmp (argv[i], "-Wcomment"))
1584 else if (!strcmp (argv[i], "-Wno-comment"))
1586 else if (!strcmp (argv[i], "-Wcomments"))
1588 else if (!strcmp (argv[i], "-Wno-comments"))
1590 else if (!strcmp (argv[i], "-Wtraditional"))
1592 else if (!strcmp (argv[i], "-Wno-traditional"))
1594 else if (!strcmp (argv[i], "-Wimport"))
1596 else if (!strcmp (argv[i], "-Wno-import"))
1598 else if (!strcmp (argv[i], "-Werror"))
1599 warnings_are_errors = 1;
1600 else if (!strcmp (argv[i], "-Wno-error"))
1601 warnings_are_errors = 0;
1602 else if (!strcmp (argv[i], "-Wall"))
1610 /* The style of the choices here is a bit mixed.
1611 The chosen scheme is a hybrid of keeping all options in one string
1612 and specifying each option in a separate argument:
1613 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1614 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1615 -M[M][G][D file]. This is awkward to handle in specs, and is not
1617 /* ??? -MG must be specified in addition to one of -M or -MM.
1618 This can be relaxed in the future without breaking anything.
1619 The converse isn't true. */
1621 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1622 if (!strcmp (argv[i], "-MG"))
1624 print_deps_missing_files = 1;
1627 if (!strcmp (argv[i], "-M"))
1629 else if (!strcmp (argv[i], "-MM"))
1631 else if (!strcmp (argv[i], "-MD"))
1633 else if (!strcmp (argv[i], "-MMD"))
1635 /* For -MD and -MMD options, write deps on file named by next arg. */
1636 if (!strcmp (argv[i], "-MD")
1637 || !strcmp (argv[i], "-MMD")) {
1639 fatal ("Filename missing after %s option", argv[i]);
1641 deps_file = argv[i];
1644 /* For -M and -MM, write deps on standard output
1645 and suppress the usual output. */
1646 deps_stream = stdout;
1653 char *p = argv[i] + 2;
1655 while ((c = *p++)) {
1656 /* Arg to -d specifies what parts of macros to dump */
1659 dump_macros = dump_only;
1663 dump_macros = dump_names;
1666 dump_macros = dump_definitions;
1674 if (argv[i][2] == '3')
1679 fprintf (stderr, "GNU CPP version %s", version_string);
1680 #ifdef TARGET_VERSION
1683 fprintf (stderr, "\n");
1688 print_include_names = 1;
1692 if (argv[i][2] != 0)
1693 pend_defs[i] = argv[i] + 2;
1694 else if (i + 1 == argc)
1695 fatal ("Macro name missing after -D option");
1697 i++, pend_defs[i] = argv[i];
1704 if (argv[i][2] != 0)
1706 else if (i + 1 == argc)
1707 fatal ("Assertion missing after -A option");
1711 if (!strcmp (p, "-")) {
1712 /* -A- eliminates all predefined macros and assertions.
1713 Let's include also any that were specified earlier
1714 on the command line. That way we can get rid of any
1715 that were passed automatically in from GCC. */
1717 inhibit_predefs = 1;
1718 for (j = 0; j < i; j++)
1719 pend_defs[j] = pend_assertions[j] = 0;
1721 pend_assertions[i] = p;
1722 pend_assertion_options[i] = "-A";
1727 case 'U': /* JF #undef something */
1728 if (argv[i][2] != 0)
1729 pend_undefs[i] = argv[i] + 2;
1730 else if (i + 1 == argc)
1731 fatal ("Macro name missing after -U option");
1733 pend_undefs[i] = argv[i+1], i++;
1737 put_out_comments = 1;
1740 case 'E': /* -E comes from cc -E; ignore it. */
1744 no_line_directives = 1;
1747 case '$': /* Don't include $ in identifiers. */
1748 dollars_in_ident = 0;
1751 case 'I': /* Add directory to path for includes. */
1753 struct file_name_list *dirtmp;
1755 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1757 /* Don't use any preceding -I directories for #include <...>. */
1758 first_bracket_include = 0;
1761 dirtmp = (struct file_name_list *)
1762 xmalloc (sizeof (struct file_name_list));
1763 dirtmp->next = 0; /* New one goes on the end */
1764 dirtmp->control_macro = 0;
1765 dirtmp->c_system_include_path = 0;
1766 if (argv[i][2] != 0)
1767 dirtmp->fname = argv[i] + 2;
1768 else if (i + 1 == argc)
1769 fatal ("Directory name missing after -I option");
1771 dirtmp->fname = argv[++i];
1772 dirtmp->got_name_map = 0;
1773 append_include_chain (dirtmp, dirtmp);
1779 if (!strcmp (argv[i], "-nostdinc"))
1780 /* -nostdinc causes no default include directories.
1781 You must specify all include-file directories with -I. */
1782 no_standard_includes = 1;
1783 else if (!strcmp (argv[i], "-nostdinc++"))
1784 /* -nostdinc++ causes no default C++-specific include directories. */
1785 no_standard_cplusplus_includes = 1;
1786 else if (!strcmp (argv[i], "-noprecomp"))
1791 /* Sun compiler passes undocumented switch "-undef".
1792 Let's assume it means to inhibit the predefined symbols. */
1793 inhibit_predefs = 1;
1796 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1797 if (in_fname == NULL) {
1800 } else if (out_fname == NULL) {
1803 } /* else fall through into error */
1806 fatal ("Invalid option `%s'", argv[i]);
1811 /* Add dirs from CPATH after dirs from -I. */
1812 /* There seems to be confusion about what CPATH should do,
1813 so for the moment it is not documented. */
1814 /* Some people say that CPATH should replace the standard include dirs,
1815 but that seems pointless: it comes before them, so it overrides them
1817 cp = getenv ("CPATH");
1818 if (cp && ! no_standard_includes)
1821 /* Now that dollars_in_ident is known, initialize is_idchar. */
1822 initialize_char_syntax ();
1824 /* Initialize output buffer */
1826 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1827 outbuf.bufp = outbuf.buf;
1828 outbuf.length = OUTBUF_SIZE;
1830 /* Do partial setup of input buffer for the sake of generating
1831 early #line directives (when -g is in effect). */
1833 fp = &instack[++indepth];
1834 if (in_fname == NULL)
1836 fp->nominal_fname = fp->fname = in_fname;
1839 /* In C++, wchar_t is a distinct basic type, and we can expect
1840 __wchar_t to be defined by cc1plus. */
1842 wchar_type = "__wchar_t";
1844 /* Install __LINE__, etc. Must follow initialize_char_syntax
1845 and option processing. */
1846 initialize_builtins (fp, &outbuf);
1848 /* Do standard #defines and assertions
1849 that identify system and machine type. */
1851 if (!inhibit_predefs) {
1852 char *p = (char *) alloca (strlen (predefs) + 1);
1853 strcpy (p, predefs);
1856 while (*p == ' ' || *p == '\t')
1858 /* Handle -D options. */
1859 if (p[0] == '-' && p[1] == 'D') {
1861 while (*p && *p != ' ' && *p != '\t')
1866 output_line_directive (fp, &outbuf, 0, same_file);
1867 make_definition (q, &outbuf);
1868 while (*p == ' ' || *p == '\t')
1870 } else if (p[0] == '-' && p[1] == 'A') {
1871 /* Handle -A options (assertions). */
1880 past_name = assertion;
1881 /* Locate end of name. */
1882 while (*past_name && *past_name != ' '
1883 && *past_name != '\t' && *past_name != '(')
1885 /* Locate `(' at start of value. */
1887 while (*value && (*value == ' ' || *value == '\t'))
1889 if (*value++ != '(')
1891 while (*value && (*value == ' ' || *value == '\t'))
1894 /* Locate end of value. */
1895 while (*past_value && *past_value != ' '
1896 && *past_value != '\t' && *past_value != ')')
1898 termination = past_value;
1899 while (*termination && (*termination == ' ' || *termination == '\t'))
1901 if (*termination++ != ')')
1903 if (*termination && *termination != ' ' && *termination != '\t')
1905 /* Temporarily null-terminate the value. */
1906 save_char = *termination;
1907 *termination = '\0';
1908 /* Install the assertion. */
1909 make_assertion ("-A", assertion);
1910 *termination = (char) save_char;
1912 while (*p == ' ' || *p == '\t')
1920 /* Now handle the command line options. */
1922 /* Do -U's, -D's and -A's in the order they were seen. */
1923 for (i = 1; i < argc; i++) {
1924 if (pend_undefs[i]) {
1926 output_line_directive (fp, &outbuf, 0, same_file);
1927 make_undef (pend_undefs[i], &outbuf);
1931 output_line_directive (fp, &outbuf, 0, same_file);
1932 make_definition (pend_defs[i], &outbuf);
1934 if (pend_assertions[i])
1935 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1938 done_initializing = 1;
1940 { /* read the appropriate environment variable and if it exists
1941 replace include_defaults with the listed path. */
1943 switch ((objc << 1) + cplusplus)
1946 epath = getenv ("C_INCLUDE_PATH");
1949 epath = getenv ("CPLUS_INCLUDE_PATH");
1952 epath = getenv ("OBJC_INCLUDE_PATH");
1955 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1958 /* If the environment var for this language is set,
1959 add to the default list of include directories. */
1961 char *nstore = (char *) alloca (strlen (epath) + 2);
1963 char *startp, *endp;
1965 for (num_dirs = 1, startp = epath; *startp; startp++)
1966 if (*startp == PATH_SEPARATOR)
1969 = (struct default_include *) xmalloc ((num_dirs
1970 * sizeof (struct default_include))
1971 + sizeof (include_defaults_array));
1972 startp = endp = epath;
1975 /* Handle cases like c:/usr/lib:d:/gcc/lib */
1976 if ((*endp == PATH_SEPARATOR
1977 #if 0 /* Obsolete, now that we use semicolons as the path separator. */
1979 && (endp-startp != 1 || !isalpha (*startp))
1984 strncpy (nstore, startp, endp-startp);
1986 strcpy (nstore, ".");
1988 nstore[endp-startp] = '\0';
1990 include_defaults[num_dirs].fname = savestring (nstore);
1991 include_defaults[num_dirs].cplusplus = cplusplus;
1992 include_defaults[num_dirs].cxx_aware = 1;
1996 endp = startp = endp + 1;
2000 /* Put the usual defaults back in at the end. */
2001 bcopy ((char *) include_defaults_array,
2002 (char *) &include_defaults[num_dirs],
2003 sizeof (include_defaults_array));
2007 append_include_chain (before_system, last_before_system);
2008 first_system_include = before_system;
2010 /* Unless -fnostdinc,
2011 tack on the standard include file dirs to the specified list */
2012 if (!no_standard_includes) {
2013 struct default_include *p = include_defaults;
2014 char *specd_prefix = include_prefix;
2015 char *default_prefix = savestring (GCC_INCLUDE_DIR);
2016 int default_len = 0;
2017 /* Remove the `include' from /usr/local/lib/gcc.../include. */
2018 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
2019 default_len = strlen (default_prefix) - 7;
2020 default_prefix[default_len] = 0;
2022 /* Search "translated" versions of GNU directories.
2023 These have /usr/local/lib/gcc... replaced by specd_prefix. */
2024 if (specd_prefix != 0 && default_len != 0)
2025 for (p = include_defaults; p->fname; p++) {
2026 /* Some standard dirs are only for C++. */
2027 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
2028 /* Does this dir start with the prefix? */
2029 if (!strncmp (p->fname, default_prefix, default_len)) {
2030 /* Yes; change prefix and add to search list. */
2031 struct file_name_list *new
2032 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
2033 int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
2034 char *str = xmalloc (this_len + 1);
2035 strcpy (str, specd_prefix);
2036 strcat (str, p->fname + default_len);
2038 new->control_macro = 0;
2039 new->c_system_include_path = !p->cxx_aware;
2040 new->got_name_map = 0;
2041 append_include_chain (new, new);
2042 if (first_system_include == 0)
2043 first_system_include = new;
2047 /* Search ordinary names for GNU include directories. */
2048 for (p = include_defaults; p->fname; p++) {
2049 /* Some standard dirs are only for C++. */
2050 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
2051 struct file_name_list *new
2052 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
2053 new->control_macro = 0;
2054 new->c_system_include_path = !p->cxx_aware;
2055 new->fname = p->fname;
2056 new->got_name_map = 0;
2057 append_include_chain (new, new);
2058 if (first_system_include == 0)
2059 first_system_include = new;
2064 /* Tack the after_include chain at the end of the include chain. */
2065 append_include_chain (after_include, last_after_include);
2066 if (first_system_include == 0)
2067 first_system_include = after_include;
2069 /* With -v, print the list of dirs to search. */
2071 struct file_name_list *p;
2072 fprintf (stderr, "#include \"...\" search starts here:\n");
2073 for (p = include; p; p = p->next) {
2074 if (p == first_bracket_include)
2075 fprintf (stderr, "#include <...> search starts here:\n");
2076 fprintf (stderr, " %s\n", p->fname);
2078 fprintf (stderr, "End of search list.\n");
2081 /* Scan the -imacros files before the main input.
2082 Much like #including them, but with no_output set
2083 so that only their macro definitions matter. */
2085 no_output++; no_record_file++;
2086 for (i = 1; i < argc; i++)
2087 if (pend_files[i]) {
2088 int fd = open (pend_files[i], O_RDONLY, 0666);
2090 perror_with_name (pend_files[i]);
2091 return FAILURE_EXIT_CODE;
2093 finclude (fd, pend_files[i], &outbuf, 0, NULL_PTR);
2095 no_output--; no_record_file--;
2097 /* Copy the entire contents of the main input file into
2098 the stacked input buffer previously allocated for it. */
2100 /* JF check for stdin */
2101 if (in_fname == NULL || *in_fname == 0) {
2104 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
2107 /* -MG doesn't select the form of output and must be specified with one of
2108 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
2109 inhibit compilation. */
2110 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
2111 fatal ("-MG must be specified with one of -M or -MM");
2113 /* Either of two environment variables can specify output of deps.
2114 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
2115 where OUTPUT_FILE is the file to write deps info to
2116 and DEPS_TARGET is the target to mention in the deps. */
2119 && (getenv ("SUNPRO_DEPENDENCIES") != 0
2120 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
2121 char *spec = getenv ("DEPENDENCIES_OUTPUT");
2126 spec = getenv ("SUNPRO_DEPENDENCIES");
2133 /* Find the space before the DEPS_TARGET, if there is one. */
2134 /* This should use index. (mrs) */
2135 while (*s != 0 && *s != ' ') s++;
2137 deps_target = s + 1;
2138 output_file = xmalloc (s - spec + 1);
2139 bcopy (spec, output_file, s - spec);
2140 output_file[s - spec] = 0;
2147 deps_file = output_file;
2151 /* For -M, print the expected object file name
2152 as the target of this Make-rule. */
2154 deps_allocated_size = 200;
2155 deps_buffer = xmalloc (deps_allocated_size);
2161 deps_output (deps_target, ':');
2162 } else if (*in_fname == 0) {
2163 deps_output ("-", ':');
2168 /* Discard all directory prefixes from filename. */
2169 if ((q = rindex (in_fname, '/')) != NULL
2170 #ifdef DIR_SEPARATOR
2171 && (q = rindex (in_fname, DIR_SEPARATOR)) != NULL
2178 /* Copy remainder to mungable area. */
2179 p = (char *) alloca (strlen(q) + 8);
2182 /* Output P, but remove known suffixes. */
2186 && p[len - 2] == '.'
2187 && index("cCsSm", p[len - 1]))
2190 && p[len - 3] == '.'
2191 && p[len - 2] == 'c'
2192 && p[len - 1] == 'c')
2195 && p[len - 4] == '.'
2196 && p[len - 3] == 'c'
2197 && p[len - 2] == 'x'
2198 && p[len - 1] == 'x')
2201 && p[len - 4] == '.'
2202 && p[len - 3] == 'c'
2203 && p[len - 2] == 'p'
2204 && p[len - 1] == 'p')
2207 /* Supply our own suffix. */
2214 deps_output (p, ':');
2215 deps_output (in_fname, ' ');
2219 file_size_and_mode (f, &st_mode, &st_size);
2220 fp->nominal_fname = fp->fname = in_fname;
2222 fp->system_header_p = 0;
2223 /* JF all this is mine about reading pipes and ttys */
2224 if (! S_ISREG (st_mode)) {
2225 /* Read input from a file that is not a normal disk file.
2226 We cannot preallocate a buffer with the correct size,
2227 so we must read in the file a piece at the time and make it bigger. */
2234 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2236 cnt = safe_read (f, (char *) fp->buf + size, bsize - size);
2237 if (cnt < 0) goto perror; /* error! */
2239 if (size != bsize) break; /* End of file */
2241 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2245 /* Read a file whose size we can determine in advance.
2246 For the sake of VMS, st_size is just an upper bound. */
2247 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
2248 fp->length = safe_read (f, (char *) fp->buf, st_size);
2249 if (fp->length < 0) goto perror;
2252 fp->if_stack = if_stack;
2254 /* Make sure data ends with a newline. And put a null after it. */
2256 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2257 /* Backslash-newline at end is not good enough. */
2258 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2259 fp->buf[fp->length++] = '\n';
2260 missing_newline = 1;
2262 fp->buf[fp->length] = '\0';
2264 /* Unless inhibited, convert trigraphs in the input. */
2269 /* Now that we know the input file is valid, open the output. */
2271 if (!out_fname || !strcmp (out_fname, ""))
2272 out_fname = "stdout";
2273 else if (! freopen (out_fname, "w", stdout))
2274 pfatal_with_name (out_fname);
2276 output_line_directive (fp, &outbuf, 0, same_file);
2278 /* Scan the -include files before the main input. */
2281 for (i = 1; i < argc; i++)
2282 if (pend_includes[i]) {
2283 int fd = open (pend_includes[i], O_RDONLY, 0666);
2285 perror_with_name (pend_includes[i]);
2286 return FAILURE_EXIT_CODE;
2288 finclude (fd, pend_includes[i], &outbuf, 0, NULL_PTR);
2292 /* Scan the input, processing macros and directives. */
2294 rescan (&outbuf, 0);
2296 if (missing_newline)
2299 if (pedantic && missing_newline)
2300 pedwarn ("file does not end in newline");
2302 /* Now we have processed the entire input
2303 Write whichever kind of output has been requested. */
2305 if (dump_macros == dump_only)
2307 else if (! inhibit_output) {
2312 /* Don't actually write the deps file if compilation has failed. */
2314 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2315 pfatal_with_name (deps_file);
2316 fputs (deps_buffer, deps_stream);
2317 putc ('\n', deps_stream);
2319 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2320 fatal ("I/O error on output");
2325 if (pcp_outfile && pcp_outfile != stdout
2326 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2327 fatal ("I/O error on `-pcp' output");
2329 if (ferror (stdout) || fclose (stdout) != 0)
2330 fatal ("I/O error on output");
2333 exit (FAILURE_EXIT_CODE);
2334 exit (SUCCESS_EXIT_CODE);
2337 pfatal_with_name (in_fname);
2341 /* Given a colon-separated list of file names PATH,
2342 add all the names to the search path for include files. */
2356 struct file_name_list *dirtmp;
2358 /* Find the end of this name. */
2359 while (*q != 0 && *q != PATH_SEPARATOR) q++;
2361 /* An empty name in the path stands for the current directory. */
2366 /* Otherwise use the directory that is named. */
2367 name = xmalloc (q - p + 1);
2368 bcopy (p, name, q - p);
2372 dirtmp = (struct file_name_list *)
2373 xmalloc (sizeof (struct file_name_list));
2374 dirtmp->next = 0; /* New one goes on the end */
2375 dirtmp->control_macro = 0;
2376 dirtmp->c_system_include_path = 0;
2377 dirtmp->fname = name;
2378 dirtmp->got_name_map = 0;
2379 append_include_chain (dirtmp, dirtmp);
2381 /* Advance past this name. */
2385 /* Skip the colon. */
2390 /* Return the address of the first character in S that equals C.
2391 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2392 Return 0 if there is no such character. Assume that C itself is not '\0'.
2393 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2394 but unfortunately memchr isn't autoconfigured yet. */
2402 char *p = (char *) s;
2404 char *q = index (p, c);
2406 return (U_CHAR *) q;
2408 size_t l = strlen (p);
2418 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2419 before main CCCP processing. Name `pcp' is also in honor of the
2420 drugs the trigraph designers must have been on.
2422 Using an extra pass through the buffer takes a little extra time,
2423 but is infinitely less hairy than trying to handle trigraphs inside
2424 strings, etc. everywhere, and also makes sure that trigraphs are
2425 only translated in the top level of processing. */
2431 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2434 fptr = bptr = sptr = buf->buf;
2435 lptr = fptr + buf->length;
2436 while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) {
2473 len = sptr - fptr - 2;
2475 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2476 C, this will be memmove (). */
2477 if (bptr != fptr && len > 0)
2478 bcopy ((char *) fptr, (char *) bptr, len);
2484 len = buf->length - (fptr - buf->buf);
2485 if (bptr != fptr && len > 0)
2486 bcopy ((char *) fptr, (char *) bptr, len);
2487 buf->length -= fptr - bptr;
2488 buf->buf[buf->length] = '\0';
2489 if (warn_trigraphs && fptr != bptr)
2490 warning ("%d trigraph(s) encountered", (fptr - bptr) / 2);
2493 /* Move all backslash-newline pairs out of embarrassing places.
2494 Exchange all such pairs following BP
2495 with any potentially-embarrassing characters that follow them.
2496 Potentially-embarrassing characters are / and *
2497 (because a backslash-newline inside a comment delimiter
2498 would cause it not to be recognized). */
2504 register U_CHAR *p = bp;
2506 /* First count the backslash-newline pairs here. */
2508 while (p[0] == '\\' && p[1] == '\n')
2511 /* What follows the backslash-newlines is not embarrassing. */
2513 if (*p != '/' && *p != '*')
2516 /* Copy all potentially embarrassing characters
2517 that follow the backslash-newline pairs
2518 down to where the pairs originally started. */
2520 while (*p == '*' || *p == '/')
2523 /* Now write the same number of pairs after the embarrassing chars. */
2530 /* Like newline_fix but for use within a directive-name.
2531 Move any backslash-newlines up past any following symbol constituents. */
2534 name_newline_fix (bp)
2537 register U_CHAR *p = bp;
2539 /* First count the backslash-newline pairs here. */
2540 while (p[0] == '\\' && p[1] == '\n')
2543 /* What follows the backslash-newlines is not embarrassing. */
2548 /* Copy all potentially embarrassing characters
2549 that follow the backslash-newline pairs
2550 down to where the pairs originally started. */
2552 while (is_idchar[*p])
2555 /* Now write the same number of pairs after the embarrassing chars. */
2562 /* Look for lint commands in comments.
2564 When we come in here, ibp points into a comment. Limit is as one expects.
2565 scan within the comment -- it should start, after lwsp, with a lint command.
2566 If so that command is returned as a (constant) string.
2568 Upon return, any arg will be pointed to with argstart and will be
2569 arglen long. Note that we don't parse that arg since it will just
2570 be printed out again.
2574 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2575 register U_CHAR *ibp;
2576 register U_CHAR *limit;
2577 U_CHAR **argstart; /* point to command arg */
2578 int *arglen, *cmdlen; /* how long they are */
2581 register U_CHAR *numptr; /* temp for arg parsing */
2585 SKIP_WHITE_SPACE (ibp);
2587 if (ibp >= limit) return NULL;
2589 linsize = limit - ibp;
2591 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2592 if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) {
2594 return "NOTREACHED";
2596 if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) {
2600 if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) {
2602 return "LINTLIBRARY";
2604 if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) {
2606 ibp += 7; linsize -= 7;
2607 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2609 /* OK, read a number */
2610 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2612 *arglen = numptr - *argstart;
2619 * The main loop of the program.
2621 * Read characters from the input stack, transferring them to the
2624 * Macros are expanded and push levels on the input stack.
2625 * At the end of such a level it is popped off and we keep reading.
2626 * At the end of any other kind of level, we return.
2627 * #-directives are handled, except within macros.
2629 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2630 * and insert them when appropriate. This is set while scanning macro
2631 * arguments before substitution. It is zero when scanning for final output.
2632 * There are three types of Newline markers:
2633 * * Newline - follows a macro name that was not expanded
2634 * because it appeared inside an expansion of the same macro.
2635 * This marker prevents future expansion of that identifier.
2636 * When the input is rescanned into the final output, these are deleted.
2637 * These are also deleted by ## concatenation.
2638 * * Newline Space (or Newline and any other whitespace character)
2639 * stands for a place that tokens must be separated or whitespace
2640 * is otherwise desirable, but where the ANSI standard specifies there
2641 * is no whitespace. This marker turns into a Space (or whichever other
2642 * whitespace char appears in the marker) in the final output,
2643 * but it turns into nothing in an argument that is stringified with #.
2644 * Such stringified arguments are the only place where the ANSI standard
2645 * specifies with precision that whitespace may not appear.
2647 * During this function, IP->bufp is kept cached in IBP for speed of access.
2648 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2649 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2650 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2651 * explicitly, and before RECACHE, since RECACHE uses OBP.
2655 rescan (op, output_marks)
2659 /* Character being scanned in main loop. */
2662 /* Length of pending accumulated identifier. */
2663 register int ident_length = 0;
2665 /* Hash code of pending accumulated identifier. */
2666 register int hash = 0;
2668 /* Current input level (&instack[indepth]). */
2671 /* Pointer for scanning input. */
2672 register U_CHAR *ibp;
2674 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2675 register U_CHAR *limit;
2677 /* Pointer for storing output. */
2678 register U_CHAR *obp;
2680 /* REDO_CHAR is nonzero if we are processing an identifier
2681 after backing up over the terminating character.
2682 Sometimes we process an identifier without backing up over
2683 the terminating character, if the terminating character
2684 is not special. Backing up is done so that the terminating character
2685 will be dispatched on again once the identifier is dealt with. */
2688 /* 1 if within an identifier inside of which a concatenation
2689 marker (Newline -) has been seen. */
2690 int concatenated = 0;
2692 /* While scanning a comment or a string constant,
2693 this records the line it started on, for error messages. */
2696 /* Record position of last `real' newline. */
2697 U_CHAR *beg_of_line;
2699 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2702 do { ip->macro->type = T_MACRO; \
2703 if (ip->free_ptr) free (ip->free_ptr); \
2704 --indepth; } while (0)
2706 /* Reload `rescan's local variables that describe the current
2707 level of the input stack. */
2710 do { ip = &instack[indepth]; \
2712 limit = ip->buf + ip->length; \
2714 check_expand (op, limit - ibp); \
2716 obp = op->bufp; } while (0)
2718 if (no_output && instack[indepth].fname != 0)
2719 skip_if_group (&instack[indepth], 1, NULL);
2726 /* Our caller must always put a null after the end of
2727 the input at each input stack level. */
2737 if (*ibp == '\n' && !ip->macro) {
2738 /* At the top level, always merge lines ending with backslash-newline,
2739 even in middle of identifier. But do not merge lines in a macro,
2740 since backslash might be followed by a newline-space marker. */
2743 --obp; /* remove backslash from obuf */
2746 /* If ANSI, backslash is just another character outside a string. */
2749 /* Otherwise, backslash suppresses specialness of following char,
2750 so copy it here to prevent the switch from seeing it.
2751 But first get any pending identifier processed. */
2752 if (ident_length > 0)
2759 if (ident_length || ip->macro || traditional)
2761 while (*ibp == '\\' && ibp[1] == '\n') {
2767 /* Treat this %: digraph as if it were #. */
2771 if (assertions_flag) {
2772 /* Copy #foo (bar lose) without macro expansion. */
2773 obp[-1] = '#'; /* In case it was '%'. */
2774 SKIP_WHITE_SPACE (ibp);
2775 while (is_idchar[*ibp])
2777 SKIP_WHITE_SPACE (ibp);
2780 skip_paren_group (ip);
2781 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2782 obp += ip->bufp - ibp;
2787 /* If this is expanding a macro definition, don't recognize
2788 preprocessing directives. */
2791 /* If this is expand_into_temp_buffer,
2792 don't recognize them either. Warn about them
2793 only after an actual newline at this level,
2794 not at the beginning of the input level. */
2796 if (ip->buf != beg_of_line)
2797 warning ("preprocessing directive not recognized within macro arg");
2804 /* # keyword: a # must be first nonblank char on the line */
2805 if (beg_of_line == 0)
2810 /* Scan from start of line, skipping whitespace, comments
2811 and backslash-newlines, and see if we reach this #.
2812 If not, this # is not special. */
2814 /* If -traditional, require # to be at beginning of line. */
2817 if (is_hor_space[*bp])
2819 else if (*bp == '\\' && bp[1] == '\n')
2821 else if (*bp == '/' && bp[1] == '*') {
2823 while (!(*bp == '*' && bp[1] == '/'))
2827 /* There is no point in trying to deal with C++ // comments here,
2828 because if there is one, then this # must be part of the
2829 comment and we would never reach here. */
2835 while (bp[1] == '\\' && bp[2] == '\n')
2839 /* %: appears at start of line; skip past the ':' too. */
2848 /* This # can start a directive. */
2850 --obp; /* Don't copy the '#' */
2854 if (! handle_directive (ip, op)) {
2858 /* Not a known directive: treat it as ordinary text.
2859 IP, OP, IBP, etc. have not been changed. */
2860 if (no_output && instack[indepth].fname) {
2861 /* If not generating expanded output,
2862 what we do with ordinary text is skip it.
2863 Discard everything until next # directive. */
2864 skip_if_group (&instack[indepth], 1, 0);
2869 *obp++ = '#'; /* Copy # (even if it was originally %:). */
2870 /* Don't expand an identifier that could be a macro directive.
2871 (Section 3.8.3 of the ANSI C standard) */
2872 SKIP_WHITE_SPACE (ibp);
2873 if (is_idstart[*ibp])
2876 while (is_idchar[*ibp])
2884 /* A # directive has been successfully processed. */
2885 /* If not generating expanded output, ignore everything until
2886 next # directive. */
2887 if (no_output && instack[indepth].fname)
2888 skip_if_group (&instack[indepth], 1, 0);
2894 case '\"': /* skip quoted string */
2896 /* A single quoted string is treated like a double -- some
2897 programs (e.g., troff) are perverse this way */
2902 start_line = ip->lineno;
2904 /* Skip ahead to a matching quote. */
2908 if (ip->macro != 0) {
2909 /* try harder: this string crosses a macro expansion boundary.
2910 This can happen naturally if -traditional.
2911 Otherwise, only -D can make a macro with an unmatched quote. */
2917 error_with_line (line_for_error (start_line),
2918 "unterminated string or character constant");
2919 error_with_line (multiline_string_line,
2920 "possible real start of unterminated constant");
2921 multiline_string_line = 0;
2930 /* Traditionally, end of line ends a string constant with no error.
2931 So exit the loop and record the new line. */
2937 error_with_line (line_for_error (start_line),
2938 "unterminated character constant");
2941 if (pedantic && multiline_string_line == 0) {
2942 pedwarn_with_line (line_for_error (start_line),
2943 "string constant runs past end of line");
2945 if (multiline_string_line == 0)
2946 multiline_string_line = ip->lineno - 1;
2953 /* Backslash newline is replaced by nothing at all,
2954 but keep the line counts correct. */
2959 /* ANSI stupidly requires that in \\ the second \
2960 is *not* prevented from combining with a newline. */
2961 while (*ibp == '\\' && ibp[1] == '\n') {
2980 if (*ibp == '\\' && ibp[1] == '\n')
2984 && !(cplusplus_comments && *ibp == '/'))
2992 /* C++ style comment... */
2993 start_line = ip->lineno;
2995 --ibp; /* Back over the slash */
2998 /* Comments are equivalent to spaces. */
2999 if (! put_out_comments)
3002 /* must fake up a comment here */
3007 U_CHAR *before_bp = ibp+2;
3009 while (ibp < limit) {
3010 if (ibp[-1] != '\\' && *ibp == '\n') {
3011 if (put_out_comments) {
3012 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
3013 obp += ibp - before_bp;
3019 /* Copy the newline into the output buffer, in order to
3020 avoid the pain of a #line every time a multiline comment
3022 if (!put_out_comments)
3033 /* Ordinary C comment. Skip it, optionally copying it to output. */
3035 start_line = ip->lineno;
3037 ++ibp; /* Skip the star. */
3039 /* If this cpp is for lint, we peek inside the comments: */
3043 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
3045 if (lintcmd != NULL) {
3047 check_expand (op, cmdlen + arglen + 14);
3049 /* I believe it is always safe to emit this newline: */
3051 bcopy ("#pragma lint ", (char *) obp, 13);
3053 bcopy (lintcmd, (char *) obp, cmdlen);
3058 bcopy (argbp, (char *) obp, arglen);
3062 /* OK, now bring us back to the state we were in before we entered
3063 this branch. We need #line because the #pragma's newline always
3064 messes up the line count. */
3066 output_line_directive (ip, op, 0, same_file);
3067 check_expand (op, limit - ibp + 2);
3073 /* Comments are equivalent to spaces.
3074 Note that we already output the slash; we might not want it.
3075 For -traditional, a comment is equivalent to nothing. */
3076 if (! put_out_comments) {
3086 U_CHAR *before_bp = ibp;
3088 while (ibp < limit) {
3091 if (warn_comments && *ibp == '*')
3092 warning ("`/*' within comment");
3095 if (*ibp == '\\' && ibp[1] == '\n')
3097 if (ibp >= limit || *ibp == '/')
3102 /* Copy the newline into the output buffer, in order to
3103 avoid the pain of a #line every time a multiline comment
3105 if (!put_out_comments)
3113 error_with_line (line_for_error (start_line),
3114 "unterminated comment");
3117 if (put_out_comments) {
3118 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
3119 obp += ibp - before_bp;
3126 if (!dollars_in_ident)
3130 case '0': case '1': case '2': case '3': case '4':
3131 case '5': case '6': case '7': case '8': case '9':
3132 /* If digit is not part of identifier, it starts a number,
3133 which means that following letters are not an identifier.
3134 "0x5" does not refer to an identifier "x5".
3135 So copy all alphanumerics that follow without accumulating
3136 as an identifier. Periods also, for sake of "3.e7". */
3138 if (ident_length == 0) {
3140 while (ibp[0] == '\\' && ibp[1] == '\n') {
3145 if (!is_idchar[c] && c != '.') {
3150 /* A sign can be part of a preprocessing number
3151 if it follows an e. */
3152 if (c == 'e' || c == 'E') {
3153 while (ibp[0] == '\\' && ibp[1] == '\n') {
3157 if (*ibp == '+' || *ibp == '-') {
3159 /* But traditional C does not let the token go past the sign. */
3170 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
3171 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
3172 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
3173 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3175 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
3176 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
3177 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
3178 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3182 /* Compute step of hash function, to avoid a proc call on every token */
3183 hash = HASHSTEP (hash, c);
3187 if (ip->fname == 0 && *ibp == '-') {
3188 /* Newline - inhibits expansion of preceding token.
3189 If expanding a macro arg, we keep the newline -.
3190 In final output, it is deleted.
3191 We recognize Newline - in macro bodies and macro args. */
3192 if (! concatenated) {
3197 if (!output_marks) {
3200 /* If expanding a macro arg, keep the newline -. */
3206 /* If reprocessing a macro expansion, newline is a special marker. */
3207 else if (ip->macro != 0) {
3208 /* Newline White is a "funny space" to separate tokens that are
3209 supposed to be separate but without space between.
3210 Here White means any whitespace character.
3211 Newline - marks a recursive macro use that is not
3212 supposed to be expandable. */
3214 if (is_space[*ibp]) {
3215 /* Newline Space does not prevent expansion of preceding token
3216 so expand the preceding token and then come back. */
3217 if (ident_length > 0)
3220 /* If generating final output, newline space makes a space. */
3221 if (!output_marks) {
3223 /* And Newline Newline makes a newline, so count it. */
3224 if (obp[-1] == '\n')
3227 /* If expanding a macro arg, keep the newline space.
3228 If the arg gets stringified, newline space makes nothing. */
3231 } else abort (); /* Newline followed by something random? */
3235 /* If there is a pending identifier, handle it and come back here. */
3236 if (ident_length > 0)
3241 /* Update the line counts and output a #line if necessary. */
3244 if (ip->lineno != op->lineno) {
3246 output_line_directive (ip, op, 1, same_file);
3247 check_expand (op, limit - ibp);
3252 /* Come here either after (1) a null character that is part of the input
3253 or (2) at the end of the input, because there is a null there. */
3256 /* Our input really contains a null character. */
3259 /* At end of a macro-expansion level, pop it and read next level. */
3260 if (ip->macro != 0) {
3263 /* If traditional, and we have an identifier that ends here,
3264 process it now, so we get the right error for recursion. */
3265 if (traditional && ident_length
3266 && ! is_idchar[*instack[indepth - 1].bufp]) {
3275 /* If we don't have a pending identifier,
3276 return at end of input. */
3277 if (ident_length == 0) {
3285 /* If we do have a pending identifier, just consider this null
3286 a special character and arrange to dispatch on it again.
3287 The second time, IDENT_LENGTH will be zero so we will return. */
3293 /* Handle the case of a character such as /, ', " or null
3294 seen following an identifier. Back over it so that
3295 after the identifier is processed the special char
3296 will be dispatched on again. */
3306 if (ident_length > 0) {
3307 register HASHNODE *hp;
3309 /* We have just seen an identifier end. If it's a macro, expand it.
3311 IDENT_LENGTH is the length of the identifier
3312 and HASH is its hash code.
3314 The identifier has already been copied to the output,
3315 so if it is a macro we must remove it.
3317 If REDO_CHAR is 0, the char that terminated the identifier
3318 has been skipped in the output and the input.
3319 OBP-IDENT_LENGTH-1 points to the identifier.
3320 If the identifier is a macro, we must back over the terminator.
3322 If REDO_CHAR is 1, the terminating char has already been
3323 backed over. OBP-IDENT_LENGTH points to the identifier. */
3325 if (!pcp_outfile || pcp_inside_if) {
3326 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3329 if (hp->length == ident_length) {
3330 int obufp_before_macroname;
3331 int op_lineno_before_macroname;
3332 register int i = ident_length;
3333 register U_CHAR *p = hp->name;
3334 register U_CHAR *q = obp - i;
3340 do { /* All this to avoid a strncmp () */
3345 /* We found a use of a macro name.
3346 see if the context shows it is a macro call. */
3348 /* Back up over terminating character if not already done. */
3354 /* Save this as a displacement from the beginning of the output
3355 buffer. We can not save this as a position in the output
3356 buffer, because it may get realloc'ed by RECACHE. */
3357 obufp_before_macroname = (obp - op->buf) - ident_length;
3358 op_lineno_before_macroname = op->lineno;
3360 if (hp->type == T_PCSTRING) {
3361 pcstring_used (hp); /* Mark the definition of this key
3362 as needed, ensuring that it
3364 break; /* Exit loop, since the key cannot have a
3365 definition any longer. */
3368 /* Record whether the macro is disabled. */
3369 disabled = hp->type == T_DISABLED;
3371 /* This looks like a macro ref, but if the macro was disabled,
3372 just copy its name and put in a marker if requested. */
3376 /* This error check caught useful cases such as
3377 #define foo(x,y) bar (x (y,0), y)
3380 error ("recursive use of macro `%s'", hp->name);
3384 check_expand (op, limit - ibp + 2);
3391 /* If macro wants an arglist, verify that a '(' follows.
3392 first skip all whitespace, copying it to the output
3393 after the macro name. Then, if there is no '(',
3394 decide this is not a macro call and leave things that way. */
3395 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3396 && hp->value.defn->nargs >= 0)
3398 U_CHAR *old_ibp = ibp;
3399 U_CHAR *old_obp = obp;
3400 int old_iln = ip->lineno;
3401 int old_oln = op->lineno;
3404 /* Scan forward over whitespace, copying it to the output. */
3405 if (ibp == limit && ip->macro != 0) {
3410 old_iln = ip->lineno;
3411 old_oln = op->lineno;
3413 /* A comment: copy it unchanged or discard it. */
3414 else if (*ibp == '/' && ibp[1] == '*') {
3415 if (put_out_comments) {
3418 } else if (! traditional) {
3422 while (ibp + 1 != limit
3423 && !(ibp[0] == '*' && ibp[1] == '/')) {
3424 /* We need not worry about newline-marks,
3425 since they are never found in comments. */
3427 /* Newline in a file. Count it. */
3431 if (put_out_comments)
3437 if (put_out_comments) {
3442 else if (is_space[*ibp]) {
3444 if (ibp[-1] == '\n') {
3445 if (ip->macro == 0) {
3446 /* Newline in a file. Count it. */
3449 } else if (!output_marks) {
3450 /* A newline mark, and we don't want marks
3451 in the output. If it is newline-hyphen,
3452 discard it entirely. Otherwise, it is
3453 newline-whitechar, so keep the whitechar. */
3463 /* A newline mark; copy both chars to the output. */
3471 /* It isn't a macro call.
3472 Put back the space that we just skipped. */
3475 ip->lineno = old_iln;
3476 op->lineno = old_oln;
3477 /* Exit the for loop. */
3482 /* This is now known to be a macro call.
3483 Discard the macro name from the output,
3484 along with any following whitespace just copied,
3485 but preserve newlines if not outputting marks since this
3486 is more likely to do the right thing with line numbers. */
3487 obp = op->buf + obufp_before_macroname;
3489 op->lineno = op_lineno_before_macroname;
3491 int newlines = op->lineno - op_lineno_before_macroname;
3492 while (0 < newlines--)
3496 /* Prevent accidental token-pasting with a character
3497 before the macro call. */
3498 if (!traditional && obp != op->buf) {
3500 case '!': case '%': case '&': case '*':
3501 case '+': case '-': case '/': case ':':
3502 case '<': case '=': case '>': case '^':
3504 /* If we are expanding a macro arg, make a newline marker
3505 to separate the tokens. If we are making real output,
3506 a plain space will do. */
3513 /* Expand the macro, reading arguments as needed,
3514 and push the expansion on the input stack. */
3517 macroexpand (hp, op);
3519 /* Reexamine input stack, since macroexpand has pushed
3520 a new level on it. */
3527 } /* End hash-table-search loop */
3529 ident_length = hash = 0; /* Stop collecting identifier */
3532 } /* End if (ident_length > 0) */
3534 } /* End per-char loop */
3536 /* Come here to return -- but first give an error message
3537 if there was an unterminated successful conditional. */
3539 if (if_stack != ip->if_stack)
3543 switch (if_stack->type)
3564 error_with_line (line_for_error (if_stack->lineno),
3565 "unterminated `#%s' conditional", str);
3567 if_stack = ip->if_stack;
3571 * Rescan a string into a temporary buffer and return the result
3572 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3574 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3575 * and insert such markers when appropriate. See `rescan' for details.
3576 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3577 * before substitution; it is 0 for other uses.
3580 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3581 U_CHAR *buf, *limit;
3582 int output_marks, assertions;
3584 register FILE_BUF *ip;
3586 int length = limit - buf;
3588 int odepth = indepth;
3589 int save_assertions_flag = assertions_flag;
3591 assertions_flag = assertions;
3596 /* Set up the input on the input stack. */
3598 buf1 = (U_CHAR *) alloca (length + 1);
3600 register U_CHAR *p1 = buf;
3601 register U_CHAR *p2 = buf1;
3608 /* Set up to receive the output. */
3610 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3611 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3616 CHECK_DEPTH ({return obuf;});
3620 ip = &instack[indepth];
3622 ip->nominal_fname = 0;
3623 ip->system_header_p = 0;
3626 ip->length = length;
3627 ip->buf = ip->bufp = buf1;
3628 ip->if_stack = if_stack;
3630 ip->lineno = obuf.lineno = 1;
3632 /* Scan the input, create the output. */
3633 rescan (&obuf, output_marks);
3635 /* Pop input stack to original state. */
3638 if (indepth != odepth)
3641 /* Record the output. */
3642 obuf.length = obuf.bufp - obuf.buf;
3644 assertions_flag = save_assertions_flag;
3649 * Process a # directive. Expects IP->bufp to point after the '#', as in
3650 * `#define foo bar'. Passes to the directive handler
3651 * (do_define, do_include, etc.): the addresses of the 1st and
3652 * last chars of the directive (starting immediately after the #
3653 * keyword), plus op and the keyword table pointer. If the directive
3654 * contains comments it is copied into a temporary buffer sans comments
3655 * and the temporary buffer is passed to the directive handler instead.
3656 * Likewise for backslash-newlines.
3658 * Returns nonzero if this was a known # directive.
3659 * Otherwise, returns zero, without advancing the input pointer.
3663 handle_directive (ip, op)
3666 register U_CHAR *bp, *cp;
3667 register struct directive *kt;
3668 register int ident_length;
3671 /* Nonzero means we must copy the entire directive
3672 to get rid of comments or backslash-newlines. */
3673 int copy_directive = 0;
3675 U_CHAR *ident, *after_ident;
3679 /* Record where the directive started. do_xifdef needs this. */
3680 directive_start = bp - 1;
3682 /* Skip whitespace and \-newline. */
3684 if (is_hor_space[*bp]) {
3685 if (*bp != ' ' && *bp != '\t' && pedantic)
3686 pedwarn ("%s in preprocessing directive", char_name[*bp]);
3688 } else if (*bp == '/' && (bp[1] == '*'
3689 || (cplusplus_comments && bp[1] == '/'))) {
3691 skip_to_end_of_comment (ip, &ip->lineno, 0);
3693 } else if (*bp == '\\' && bp[1] == '\n') {
3694 bp += 2; ip->lineno++;
3698 /* Now find end of directive name.
3699 If we encounter a backslash-newline, exchange it with any following
3700 symbol-constituents so that we end up with a contiguous name. */
3707 if (*cp == '\\' && cp[1] == '\n')
3708 name_newline_fix (cp);
3714 ident_length = cp - bp;
3718 /* A line of just `#' becomes blank. */
3720 if (ident_length == 0 && *after_ident == '\n') {
3721 ip->bufp = after_ident;
3725 if (ident_length == 0 || !is_idstart[*ident]) {
3727 while (is_idchar[*p]) {
3728 if (*p < '0' || *p > '9')
3732 /* Handle # followed by a line number. */
3733 if (p != ident && !is_idchar[*p]) {
3734 static struct directive line_directive_table[] = {
3735 { 4, do_line, "line", T_LINE},
3738 pedwarn ("`#' followed by integer");
3739 after_ident = ident;
3740 kt = line_directive_table;
3744 /* Avoid error for `###' and similar cases unless -pedantic. */
3746 while (*p == '#' || is_hor_space[*p]) p++;
3748 if (pedantic && !lang_asm)
3749 warning ("invalid preprocessing directive");
3755 error ("invalid preprocessing directive name");
3761 * Decode the keyword and call the appropriate expansion
3762 * routine, after moving the input pointer up to the next line.
3764 for (kt = directive_table; kt->length > 0; kt++) {
3765 if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) {
3766 register U_CHAR *buf;
3767 register U_CHAR *limit;
3770 int *already_output;
3772 /* Nonzero means do not delete comments within the directive.
3773 #define needs this when -traditional. */
3778 limit = ip->buf + ip->length;
3781 keep_comments = traditional && kt->traditional_comments;
3782 /* #import is defined only in Objective C, or when on the NeXT. */
3783 if (kt->type == T_IMPORT
3784 && !(objc || lookup ((U_CHAR *) "__NeXT__", -1, -1)))
3787 /* Find the end of this directive (first newline not backslashed
3788 and not in a string or comment).
3789 Set COPY_DIRECTIVE if the directive must be copied
3790 (it contains a backslash-newline or a comment). */
3792 buf = bp = after_ident;
3793 while (bp < limit) {
3794 register U_CHAR c = *bp++;
3802 } else if (traditional)
3809 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_directive, &unterminated);
3810 /* Don't bother calling the directive if we already got an error
3811 message due to unterminated string. Skip everything and pretend
3812 we called the directive. */
3815 /* Traditional preprocessing permits unterminated strings. */
3824 /* <...> is special for #include. */
3826 if (!kt->angle_brackets)
3828 while (bp < limit && *bp != '>' && *bp != '\n') {
3829 if (*bp == '\\' && bp[1] == '\n') {
3839 if (*bp == '\\' && bp[1] == '\n')
3842 || (cplusplus_comments && *bp == '/')) {
3843 U_CHAR *obp = bp - 1;
3845 skip_to_end_of_comment (ip, &ip->lineno, 0);
3847 /* No need to copy the directive because of a comment at the end;
3848 just don't include the comment in the directive. */
3849 if (bp == limit || *bp == '\n') {
3853 /* Don't remove the comments if -traditional. */
3854 if (! keep_comments)
3863 pedwarn ("%s in preprocessing directive", char_name[c]);
3867 --bp; /* Point to the newline */
3875 resume_p = ip->bufp;
3876 /* BP is the end of the directive.
3877 RESUME_P is the next interesting data after the directive.
3878 A comment may come between. */
3880 /* If a directive should be copied through, and -E was given,
3881 pass it through before removing comments. */
3882 if (!no_output && kt->pass_thru && put_out_comments) {
3885 /* Output directive name. */
3886 check_expand (op, kt->length + 2);
3887 /* Make sure # is at the start of a line */
3888 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3893 bcopy (kt->name, op->bufp, kt->length);
3894 op->bufp += kt->length;
3896 /* Output arguments. */
3898 check_expand (op, len);
3899 bcopy (buf, (char *) op->bufp, len);
3901 /* Take account of any (escaped) newlines just output. */
3903 if (buf[len] == '\n')
3906 already_output = &junk;
3907 } /* Don't we need a newline or #line? */
3909 if (copy_directive) {
3910 register U_CHAR *xp = buf;
3911 /* Need to copy entire directive into temp buffer before dispatching */
3913 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for directive plus
3917 /* Copy to the new buffer, deleting comments
3918 and backslash-newlines (and whitespace surrounding the latter). */
3921 register U_CHAR c = *xp++;
3926 abort (); /* A bare newline should never part of the line. */
3929 /* <...> is special for #include. */
3931 if (!kt->angle_brackets)
3933 while (xp < bp && c != '>') {
3935 if (c == '\\' && xp < bp && *xp == '\n')
3946 if (cp != buf && is_space[cp[-1]]) {
3947 while (cp != buf && is_space[cp[-1]]) cp--;
3949 SKIP_WHITE_SPACE (xp);
3950 } else if (is_space[*xp]) {
3952 SKIP_WHITE_SPACE (xp);
3954 } else if (traditional && xp < bp) {
3962 register U_CHAR *bp1
3963 = skip_quoted_string (xp - 1, bp, ip->lineno,
3964 NULL_PTR, NULL_PTR, NULL_PTR);
3978 || (cplusplus_comments && *xp == '/')) {
3980 /* If we already copied the directive through,
3981 already_output != 0 prevents outputting comment now. */
3982 skip_to_end_of_comment (ip, already_output, 0);
3984 while (xp != ip->bufp)
3986 /* Delete or replace the slash. */
3987 else if (traditional)
3996 /* Null-terminate the copy. */
4002 ip->bufp = resume_p;
4004 /* Some directives should be written out for cc1 to process,
4005 just as if they were not defined. And sometimes we're copying
4006 definitions through. */
4008 if (!no_output && already_output == 0
4010 || (kt->type == T_DEFINE
4011 && (dump_macros == dump_names
4012 || dump_macros == dump_definitions)))) {
4015 /* Output directive name. */
4016 check_expand (op, kt->length + 1);
4018 bcopy (kt->name, (char *) op->bufp, kt->length);
4019 op->bufp += kt->length;
4021 if (kt->pass_thru || dump_macros == dump_definitions) {
4022 /* Output arguments. */
4024 check_expand (op, len);
4025 bcopy (buf, (char *) op->bufp, len);
4027 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
4030 SKIP_WHITE_SPACE (xp);
4032 while (is_idchar[*xp]) xp++;
4034 check_expand (op, len + 1);
4036 bcopy (yp, op->bufp, len);
4039 } /* Don't we need a newline or #line? */
4041 /* Call the appropriate directive handler. buf now points to
4042 either the appropriate place in the input buffer, or to
4043 the temp buffer if it was necessary to make one. cp
4044 points to the first char after the contents of the (possibly
4045 copied) directive, in either case. */
4046 (*kt->func) (buf, cp, op, kt);
4047 check_expand (op, ip->length - (ip->bufp - ip->buf));
4053 /* It is deliberate that we don't warn about undefined directives.
4054 That is the responsibility of cc1. */
4061 static struct tm *timebuf;
4063 time_t t = time ((time_t *)0);
4064 timebuf = localtime (&t);
4069 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4070 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
4074 * expand things like __FILE__. Place the expansion into the output
4075 * buffer *without* rescanning.
4079 special_symbol (hp, op)
4086 FILE_BUF *ip = NULL;
4089 int paren = 0; /* For special `defined' keyword */
4091 if (pcp_outfile && pcp_inside_if
4092 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
4093 error ("Predefined macro `%s' used inside `#if' during precompilation",
4096 for (i = indepth; i >= 0; i--)
4097 if (instack[i].fname != NULL) {
4102 error ("cccp error: not in any file?!");
4103 return; /* the show must go on */
4111 if (hp->type == T_FILE)
4112 string = ip->nominal_fname;
4114 string = instack[0].nominal_fname;
4118 buf = (char *) alloca (3 + 4 * strlen (string));
4119 quote_string (buf, string);
4127 case T_INCLUDE_LEVEL:
4129 for (i = indepth; i >= 0; i--)
4130 if (instack[i].fname != NULL)
4133 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
4134 sprintf (buf, "%d", true_indepth - 1);
4138 buf = (char *) alloca (3 + strlen (version_string));
4139 sprintf (buf, "\"%s\"", version_string);
4142 #ifndef NO_BUILTIN_SIZE_TYPE
4148 #ifndef NO_BUILTIN_PTRDIFF_TYPE
4149 case T_PTRDIFF_TYPE:
4158 case T_USER_LABEL_PREFIX_TYPE:
4159 buf = USER_LABEL_PREFIX;
4162 case T_REGISTER_PREFIX_TYPE:
4163 buf = REGISTER_PREFIX;
4167 buf = hp->value.cpval;
4168 if (pcp_inside_if && pcp_outfile)
4169 /* Output a precondition for this macro use */
4170 fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
4174 buf = (char *) alloca (10);
4175 sprintf (buf, "%d", ip->lineno);
4180 buf = (char *) alloca (20);
4181 timebuf = timestamp ();
4182 if (hp->type == T_DATE)
4183 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
4184 timebuf->tm_mday, timebuf->tm_year + 1900);
4186 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
4190 case T_SPEC_DEFINED:
4191 buf = " 0 "; /* Assume symbol is not defined */
4192 ip = &instack[indepth];
4193 SKIP_WHITE_SPACE (ip->bufp);
4194 if (*ip->bufp == '(') {
4196 ip->bufp++; /* Skip over the paren */
4197 SKIP_WHITE_SPACE (ip->bufp);
4200 if (!is_idstart[*ip->bufp])
4202 if ((hp = lookup (ip->bufp, -1, -1))) {
4203 if (pcp_outfile && pcp_inside_if
4204 && (hp->type == T_CONST
4205 || (hp->type == T_MACRO && hp->value.defn->predefined)))
4206 /* Output a precondition for this macro use. */
4207 fprintf (pcp_outfile, "#define %s\n", hp->name);
4211 if (pcp_outfile && pcp_inside_if) {
4212 /* Output a precondition for this macro use */
4213 U_CHAR *cp = ip->bufp;
4214 fprintf (pcp_outfile, "#undef ");
4215 while (is_idchar[*cp]) /* Ick! */
4216 fputc (*cp++, pcp_outfile);
4217 putc ('\n', pcp_outfile);
4219 while (is_idchar[*ip->bufp])
4221 SKIP_WHITE_SPACE (ip->bufp);
4223 if (*ip->bufp != ')')
4231 error ("`defined' without an identifier");
4235 error ("cccp error: invalid special hash type"); /* time for gdb */
4239 check_expand (op, len);
4240 bcopy (buf, (char *) op->bufp, len);
4247 /* Routines to handle #directives */
4249 /* Handle #include and #import.
4250 This function expects to see "fname" or <fname> on the input. */
4253 do_include (buf, limit, op, keyword)
4254 U_CHAR *buf, *limit;
4256 struct directive *keyword;
4258 int importing = (keyword->type == T_IMPORT);
4259 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4260 static int import_warning = 0;
4261 char *fname; /* Dynamically allocated fname buffer */
4264 U_CHAR *fbeg, *fend; /* Beginning and end of fname */
4266 struct file_name_list *search_start = include; /* Chain of dirs to search */
4267 struct file_name_list dsp[1]; /* First in chain, if #include "..." */
4268 struct file_name_list *searchptr = 0;
4271 int f; /* file number */
4273 int retried = 0; /* Have already tried macro
4274 expanding the include line*/
4275 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4280 f= -1; /* JF we iz paranoid! */
4282 if (importing && warn_import && !inhibit_warnings
4283 && !instack[indepth].system_header_p && !import_warning) {
4285 warning ("using `#import' is not recommended");
4286 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4287 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4288 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4289 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4290 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4291 fprintf (stderr, " ... <real contents of file> ...\n");
4292 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4293 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4294 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4295 fprintf (stderr, "when it is equipped with such a conditional.\n");
4301 SKIP_WHITE_SPACE (fbeg);
4302 /* Discard trailing whitespace so we can easily see
4303 if we have parsed all the significant chars we were given. */
4304 while (limit != fbeg && is_hor_space[limit[-1]]) limit--;
4310 /* Copy the operand text, concatenating the strings. */
4313 fbeg = (U_CHAR *) alloca (limit - fbeg + 1);
4315 while (fin != limit) {
4316 while (fin != limit && *fin != '\"')
4321 /* If not at the end, there had better be another string. */
4322 /* Skip just horiz space, and don't go past limit. */
4323 while (fin != limit && is_hor_space[*fin]) fin++;
4324 if (fin != limit && *fin == '\"')
4332 /* We have "filename". Figure out directory this source
4333 file is coming from and put it on the front of the list. */
4335 /* If -I- was specified, don't search current dir, only spec'd ones. */
4336 if (ignore_srcdir) break;
4338 for (fp = &instack[indepth]; fp >= instack; fp--)
4343 if ((nam = fp->nominal_fname) != NULL) {
4344 /* Found a named file. Figure out dir of the file,
4345 and put it in front of the search list. */
4346 dsp[0].next = search_start;
4349 ep = rindex (nam, '/');
4350 #ifdef DIR_SEPARATOR
4351 if (ep == NULL) ep = rindex (nam, DIR_SEPARATOR);
4353 char *tmp = rindex (nam, DIR_SEPARATOR);
4354 if (tmp != NULL && tmp > ep) ep = tmp;
4358 ep = rindex (nam, ']');
4359 if (ep == NULL) ep = rindex (nam, '>');
4360 if (ep == NULL) ep = rindex (nam, ':');
4361 if (ep != NULL) ep++;
4365 dsp[0].fname = (char *) alloca (n + 1);
4366 strncpy (dsp[0].fname, nam, n);
4367 dsp[0].fname[n] = '\0';
4368 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4369 max_include_len = n + INCLUDE_LEN_FUDGE;
4371 dsp[0].fname = 0; /* Current directory */
4373 dsp[0].got_name_map = 0;
4382 while (fend != limit && *fend != '>') fend++;
4383 if (*fend == '>' && fend + 1 == limit) {
4385 /* If -I-, start with the first -I dir after the -I-. */
4386 if (first_bracket_include)
4387 search_start = first_bracket_include;
4395 * Support '#include xyz' like VAX-C to allow for easy use of all the
4396 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4397 * code from case '<' is repeated here) and generates a warning.
4398 * (Note: macro expansion of `xyz' takes precedence.)
4400 if (retried && isalpha(*(--fbeg))) {
4402 while (fend != limit && (!isspace(*fend))) fend++;
4403 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4404 if (fend == limit) {
4406 /* If -I-, start with the first -I dir after the -I-. */
4407 if (first_bracket_include)
4408 search_start = first_bracket_include;
4416 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4419 /* Expand buffer and then remove any newline markers.
4420 We can't just tell expand_to_temp_buffer to omit the markers,
4421 since it would put extra spaces in include file names. */
4424 trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
4426 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4428 while (src != trybuf.bufp) {
4429 switch ((*limit++ = *src++)) {
4438 U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
4439 NULL_PTR, NULL_PTR, NULL_PTR);
4453 /* For #include_next, skip in the search path
4454 past the dir in which the containing file was found. */
4457 for (fp = &instack[indepth]; fp >= instack; fp--)
4458 if (fp->fname != NULL) {
4459 /* fp->dir is null if the containing file was specified
4460 with an absolute file name. In that case, don't skip anything. */
4462 search_start = fp->dir->next;
4471 error ("empty file name in `#%s'", keyword->name);
4475 /* Allocate this permanently, because it gets stored in the definitions
4477 fname = xmalloc (max_include_len + flen + 4);
4478 /* + 2 above for slash and terminating null. */
4479 /* + 2 added for '.h' on VMS (to support '#include filename') */
4481 /* If specified file name is absolute, just open it. */
4484 #ifdef DIR_SEPARATOR
4485 || *fbeg == DIR_SEPARATOR
4488 strncpy (fname, (char *) fbeg, flen);
4490 if (redundant_include_p (fname))
4493 f = lookup_import (fname, NULL_PTR);
4495 f = open_include_file (fname, NULL_PTR);
4497 return 0; /* Already included this file */
4499 /* Search directory path, trying to open the file.
4500 Copy each filename tried into FNAME. */
4502 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4503 if (searchptr->fname) {
4504 /* The empty string in a search path is ignored.
4505 This makes it possible to turn off entirely
4506 a standard piece of the list. */
4507 if (searchptr->fname[0] == 0)
4509 strcpy (fname, searchptr->fname);
4510 strcat (fname, "/");
4511 fname[strlen (fname) + flen] = 0;
4515 strncat (fname, (char *) fbeg, flen);
4517 /* Change this 1/2 Unix 1/2 VMS file specification into a
4518 full VMS file specification */
4519 if (searchptr->fname && (searchptr->fname[0] != 0)) {
4520 /* Fix up the filename */
4521 hack_vms_include_specification (fname);
4523 /* This is a normal VMS filespec, so use it unchanged. */
4524 strncpy (fname, fbeg, flen);
4526 /* if it's '#include filename', add the missing .h */
4527 if (index(fname,'.')==NULL) {
4528 strcat (fname, ".h");
4532 /* ??? There are currently 3 separate mechanisms for avoiding processing
4533 of redundant include files: #import, #pragma once, and
4534 redundant_include_p. It would be nice if they were unified. */
4535 if (redundant_include_p (fname))
4538 f = lookup_import (fname, searchptr);
4540 f = open_include_file (fname, searchptr);
4542 return 0; /* Already included this file */
4544 else if (f == -1 && errno == EACCES)
4545 warning ("Header file %s exists, but is not readable", fname);
4553 /* A file that was not found. */
4555 strncpy (fname, (char *) fbeg, flen);
4557 /* If generating dependencies and -MG was specified, we assume missing
4558 files are leaf files, living in the same directory as the source file
4559 or other similar place; these missing files may be generated from
4560 other files and may not exist yet (eg: y.tab.h). */
4561 if (print_deps_missing_files
4562 && print_deps > (angle_brackets || (system_include_depth > 0)))
4564 /* If it was requested as a system header file,
4565 then assume it belongs in the first place to look for such. */
4568 for (searchptr = search_start; searchptr; searchptr = searchptr->next)
4570 if (searchptr->fname)
4574 if (searchptr->fname[0] == 0)
4576 p = xmalloc (strlen (searchptr->fname)
4577 + strlen (fname) + 2);
4578 strcpy (p, searchptr->fname);
4581 deps_output (p, ' ');
4589 /* Otherwise, omit the directory, as if the file existed
4590 in the directory with the source. */
4591 deps_output (fname, ' ');
4594 /* If -M was specified, and this header file won't be added to the
4595 dependency list, then don't count this as an error, because we can
4596 still produce correct output. Otherwise, we can't produce correct
4597 output, because there may be dependencies we need inside the missing
4598 file, and we don't know what directory this missing file exists in. */
4600 && (print_deps <= (angle_brackets || (system_include_depth > 0))))
4601 warning ("No include path in which to find %s", fname);
4602 else if (search_start)
4603 error_from_errno (fname);
4605 error ("No include path in which to find %s", fname);
4607 /* Check to see if this include file is a once-only include file.
4610 struct file_name_list* ptr;
4612 for (ptr = dont_repeat_files; ptr; ptr = ptr->next) {
4613 if (!strcmp (ptr->fname, fname)) {
4615 return 0; /* This file was once'd. */
4619 for (ptr = all_include_files; ptr; ptr = ptr->next) {
4620 if (!strcmp (ptr->fname, fname))
4621 break; /* This file was included before. */
4625 /* This is the first time for this file. */
4626 /* Add it to list of files included. */
4628 ptr = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
4629 ptr->control_macro = 0;
4630 ptr->c_system_include_path = 0;
4631 ptr->next = all_include_files;
4632 all_include_files = ptr;
4633 ptr->fname = savestring (fname);
4634 ptr->got_name_map = 0;
4636 /* For -M, add this file to the dependencies. */
4637 if (print_deps > (angle_brackets || (system_include_depth > 0)))
4638 deps_output (fname, ' ');
4641 /* Handle -H option. */
4642 if (print_include_names) {
4643 output_dots (stderr, indepth);
4644 fprintf (stderr, "%s\n", fname);
4648 system_include_depth++;
4650 /* Actually process the file. */
4651 add_import (f, fname); /* Record file on "seen" list for #import. */
4653 pcftry = (char *) alloca (strlen (fname) + 30);
4664 sprintf (pcftry, "%s%d", fname, pcfnum++);
4666 pcf = open (pcftry, O_RDONLY, 0666);
4672 if (bcmp ((char *) &stat_f.st_ino, (char *) &s.st_ino,
4674 || stat_f.st_dev != s.st_dev)
4676 pcfbuf = check_precompiled (pcf, fname, &pcfbuflimit);
4677 /* Don't need it any more. */
4682 /* Don't need it at all. */
4687 } while (pcf != -1 && !pcfbuf);
4690 /* Actually process the file */
4692 pcfname = xmalloc (strlen (pcftry) + 1);
4693 strcpy (pcfname, pcftry);
4694 pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) pcfbuflimit,
4695 (U_CHAR *) fname, op);
4698 finclude (f, fname, op, is_system_include (fname), searchptr);
4701 system_include_depth--;
4706 /* Return nonzero if there is no need to include file NAME
4707 because it has already been included and it contains a conditional
4708 to make a repeated include do nothing. */
4711 redundant_include_p (name)
4714 struct file_name_list *l = all_include_files;
4715 for (; l; l = l->next)
4716 if (! strcmp (name, l->fname)
4718 && lookup (l->control_macro, -1, -1))
4723 /* Return nonzero if the given FILENAME is an absolute pathname which
4724 designates a file within one of the known "system" include file
4725 directories. We assume here that if the given FILENAME looks like
4726 it is the name of a file which resides either directly in a "system"
4727 include file directory, or within any subdirectory thereof, then the
4728 given file must be a "system" include file. This function tells us
4729 if we should suppress pedantic errors/warnings for the given FILENAME.
4731 The value is 2 if the file is a C-language system header file
4732 for which C++ should (on most systems) assume `extern "C"'. */
4735 is_system_include (filename)
4736 register char *filename;
4738 struct file_name_list *searchptr;
4740 for (searchptr = first_system_include; searchptr;
4741 searchptr = searchptr->next)
4742 if (searchptr->fname) {
4743 register char *sys_dir = searchptr->fname;
4744 register unsigned length = strlen (sys_dir);
4746 if (! strncmp (sys_dir, filename, length)
4747 && (filename[length] == '/'
4748 #ifdef DIR_SEPARATOR
4749 || filename[length] == DIR_SEPARATOR
4752 if (searchptr->c_system_include_path)
4761 /* The file_name_map structure holds a mapping of file names for a
4762 particular directory. This mapping is read from the file named
4763 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4764 map filenames on a file system with severe filename restrictions,
4765 such as DOS. The format of the file name map file is just a series
4766 of lines with two tokens on each line. The first token is the name
4767 to map, and the second token is the actual name to use. */
4769 struct file_name_map
4771 struct file_name_map *map_next;
4776 #define FILE_NAME_MAP_FILE "header.gcc"
4778 /* Read a space delimited string of unlimited length from a stdio
4782 read_filename_string (ch, f)
4790 set = alloc = xmalloc (len + 1);
4794 while ((ch = getc (f)) != EOF && ! is_space[ch])
4796 if (set - alloc == len)
4799 alloc = xrealloc (alloc, len + 1);
4800 set = alloc + len / 2;
4810 /* Read the file name map file for DIRNAME. */
4812 static struct file_name_map *
4813 read_name_map (dirname)
4816 /* This structure holds a linked list of file name maps, one per
4818 struct file_name_map_list
4820 struct file_name_map_list *map_list_next;
4821 char *map_list_name;
4822 struct file_name_map *map_list_map;
4824 static struct file_name_map_list *map_list;
4825 register struct file_name_map_list *map_list_ptr;
4829 for (map_list_ptr = map_list; map_list_ptr;
4830 map_list_ptr = map_list_ptr->map_list_next)
4831 if (! strcmp (map_list_ptr->map_list_name, dirname))
4832 return map_list_ptr->map_list_map;
4834 map_list_ptr = ((struct file_name_map_list *)
4835 xmalloc (sizeof (struct file_name_map_list)));
4836 map_list_ptr->map_list_name = savestring (dirname);
4837 map_list_ptr->map_list_map = NULL;
4839 name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
4840 strcpy (name, dirname);
4843 strcat (name, FILE_NAME_MAP_FILE);
4844 f = fopen (name, "r");
4846 map_list_ptr->map_list_map = NULL;
4850 int dirlen = strlen (dirname);
4852 while ((ch = getc (f)) != EOF)
4855 struct file_name_map *ptr;
4859 from = read_filename_string (ch, f);
4860 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4862 to = read_filename_string (ch, f);
4864 ptr = ((struct file_name_map *)
4865 xmalloc (sizeof (struct file_name_map)));
4866 ptr->map_from = from;
4868 /* Make the real filename absolute. */
4873 ptr->map_to = xmalloc (dirlen + strlen (to) + 2);
4874 strcpy (ptr->map_to, dirname);
4875 ptr->map_to[dirlen] = '/';
4876 strcpy (ptr->map_to + dirlen + 1, to);
4880 ptr->map_next = map_list_ptr->map_list_map;
4881 map_list_ptr->map_list_map = ptr;
4883 while ((ch = getc (f)) != '\n')
4890 map_list_ptr->map_list_next = map_list;
4891 map_list = map_list_ptr;
4893 return map_list_ptr->map_list_map;
4896 /* Try to open include file FILENAME. SEARCHPTR is the directory
4897 being tried from the include file search path. This function maps
4898 filenames on file systems based on information read by
4902 open_include_file (filename, searchptr)
4904 struct file_name_list *searchptr;
4906 register struct file_name_map *map;
4907 register char *from;
4910 if (searchptr && ! searchptr->got_name_map)
4912 searchptr->name_map = read_name_map (searchptr->fname
4913 ? searchptr->fname : ".");
4914 searchptr->got_name_map = 1;
4917 /* First check the mapping for the directory we are using. */
4918 if (searchptr && searchptr->name_map)
4921 if (searchptr->fname)
4922 from += strlen (searchptr->fname) + 1;
4923 for (map = searchptr->name_map; map; map = map->map_next)
4925 if (! strcmp (map->map_from, from))
4927 /* Found a match. */
4928 return open (map->map_to, O_RDONLY, 0666);
4933 /* Try to find a mapping file for the particular directory we are
4934 looking in. Thus #include <sys/types.h> will look up sys/types.h
4935 in /usr/include/header.gcc and look up types.h in
4936 /usr/include/sys/header.gcc. */
4937 p = rindex (filename, '/');
4938 #ifdef DIR_SEPARATOR
4939 if (! p) p = rindex (filename, DIR_SEPARATOR);
4941 char *tmp = rindex (filename, DIR_SEPARATOR);
4942 if (tmp != NULL && tmp > p) p = tmp;
4949 && strlen (searchptr->fname) == p - filename
4950 && ! strncmp (searchptr->fname, filename, p - filename))
4952 /* FILENAME is in SEARCHPTR, which we've already checked. */
4953 return open (filename, O_RDONLY, 0666);
4963 dir = (char *) alloca (p - filename + 1);
4964 bcopy (filename, dir, p - filename);
4965 dir[p - filename] = '\0';
4968 for (map = read_name_map (dir); map; map = map->map_next)
4969 if (! strcmp (map->map_from, from))
4970 return open (map->map_to, O_RDONLY, 0666);
4972 return open (filename, O_RDONLY, 0666);
4975 /* Process the contents of include file FNAME, already open on descriptor F,
4977 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4978 "system" include directories (as decided by the `is_system_include'
4980 DIRPTR is the link in the dir path through which this file was found,
4981 or 0 if the file name was absolute. */
4984 finclude (f, fname, op, system_header_p, dirptr)
4988 int system_header_p;
4989 struct file_name_list *dirptr;
4994 FILE_BUF *fp; /* For input stack frame */
4995 int missing_newline = 0;
4997 CHECK_DEPTH (return;);
4999 if (file_size_and_mode (f, &st_mode, &st_size) < 0)
5001 perror_with_name (fname);
5006 fp = &instack[indepth + 1];
5007 bzero ((char *) fp, sizeof (FILE_BUF));
5008 fp->nominal_fname = fp->fname = fname;
5011 fp->if_stack = if_stack;
5012 fp->system_header_p = system_header_p;
5015 if (S_ISREG (st_mode)) {
5016 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
5019 /* Read the file contents, knowing that st_size is an upper bound
5020 on the number of bytes we can read. */
5021 fp->length = safe_read (f, (char *) fp->buf, st_size);
5022 if (fp->length < 0) goto nope;
5024 else if (S_ISDIR (st_mode)) {
5025 error ("directory `%s' specified in #include", fname);
5029 /* Cannot count its file size before reading.
5030 First read the entire file into heap and
5031 copy them into buffer on stack. */
5036 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
5039 i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size);
5041 goto nope; /* error! */
5043 if (st_size != bsize)
5044 break; /* End of file */
5046 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
5049 fp->length = st_size;
5052 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
5053 /* Backslash-newline at end is not good enough. */
5054 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
5055 fp->buf[fp->length++] = '\n';
5056 missing_newline = 1;
5058 fp->buf[fp->length] = '\0';
5060 /* Close descriptor now, so nesting does not use lots of descriptors. */
5063 /* Must do this before calling trigraph_pcp, so that the correct file name
5064 will be printed in warning messages. */
5067 input_file_stack_tick++;
5072 output_line_directive (fp, op, 0, enter_file);
5075 if (missing_newline)
5078 if (pedantic && missing_newline)
5079 pedwarn ("file does not end in newline");
5082 input_file_stack_tick++;
5083 output_line_directive (&instack[indepth], op, 0, leave_file);
5089 perror_with_name (fname);
5094 /* Record that inclusion of the file named FILE
5095 should be controlled by the macro named MACRO_NAME.
5096 This means that trying to include the file again
5097 will do something if that macro is defined. */
5100 record_control_macro (file, macro_name)
5104 struct file_name_list *new;
5106 for (new = all_include_files; new; new = new->next) {
5107 if (!strcmp (new->fname, file)) {
5108 new->control_macro = macro_name;
5113 /* If the file is not in all_include_files, something's wrong. */
5117 /* Maintain and search list of included files, for #import. */
5119 #define IMPORT_HASH_SIZE 31
5121 struct import_file {
5125 struct import_file *next;
5128 /* Hash table of files already included with #include or #import. */
5130 static struct import_file *import_hash_table[IMPORT_HASH_SIZE];
5132 /* Hash a file name for import_hash_table. */
5140 while (*f) val += *f++;
5141 return (val%IMPORT_HASH_SIZE);
5144 /* Search for file FILENAME in import_hash_table.
5145 Return -2 if found, either a matching name or a matching inode.
5146 Otherwise, open the file and return a file descriptor if successful
5147 or -1 if unsuccessful. */
5150 lookup_import (filename, searchptr)
5152 struct file_name_list *searchptr;
5154 struct import_file *i;
5160 hashval = import_hash (filename);
5162 /* Attempt to find file in list of already included files */
5163 i = import_hash_table[hashval];
5166 if (!strcmp (filename, i->name))
5167 return -2; /* return found */
5170 /* Open it and try a match on inode/dev */
5171 fd = open_include_file (filename, searchptr);
5175 for (h = 0; h < IMPORT_HASH_SIZE; h++) {
5176 i = import_hash_table[h];
5178 /* Compare the inode and the device.
5179 Supposedly on some systems the inode is not a scalar. */
5180 if (!bcmp ((char *) &i->inode, (char *) &sb.st_ino, sizeof (sb.st_ino))
5181 && i->dev == sb.st_dev) {
5183 return -2; /* return found */
5188 return fd; /* Not found, return open file */
5191 /* Add the file FNAME, open on descriptor FD, to import_hash_table. */
5194 add_import (fd, fname)
5198 struct import_file *i;
5202 hashval = import_hash (fname);
5204 i = (struct import_file *)xmalloc (sizeof (struct import_file));
5205 i->name = xmalloc (strlen (fname)+1);
5206 strcpy (i->name, fname);
5207 bcopy ((char *) &sb.st_ino, (char *) &i->inode, sizeof (sb.st_ino));
5209 i->next = import_hash_table[hashval];
5210 import_hash_table[hashval] = i;
5213 /* Load the specified precompiled header into core, and verify its
5214 preconditions. PCF indicates the file descriptor to read, which must
5215 be a regular file. FNAME indicates the file name of the original
5216 header. *LIMIT will be set to an address one past the end of the file.
5217 If the preconditions of the file are not satisfied, the buffer is
5218 freed and we return 0. If the preconditions are satisfied, return
5219 the address of the buffer following the preconditions. The buffer, in
5220 this case, should never be freed because various pieces of it will
5221 be referred to until all precompiled strings are output at the end of
5225 check_precompiled (pcf, fname, limit)
5239 if (file_size_and_mode (pcf, &st_mode, &st_size) < 0)
5242 if (S_ISREG (st_mode))
5244 buf = xmalloc (st_size + 2);
5245 length = safe_read (pcf, buf, st_size);
5252 if (length > 0 && buf[length-1] != '\n')
5253 buf[length++] = '\n';
5256 *limit = buf + length;
5258 /* File is in core. Check the preconditions. */
5259 if (!check_preconditions (buf))
5261 for (cp = buf; *cp; cp++)
5264 fprintf (stderr, "Using preinclude %s\n", fname);
5270 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5276 /* PREC (null terminated) points to the preconditions of a
5277 precompiled header. These are a series of #define and #undef
5278 lines which must match the current contents of the hash
5281 check_preconditions (prec)
5288 lineend = index (prec, '\n');
5290 if (*prec++ != '#') {
5291 error ("Bad format encountered while reading precompiled file");
5294 if (!strncmp (prec, "define", 6)) {
5298 mdef = create_definition ((U_CHAR *) prec, (U_CHAR *) lineend, NULL_PTR);
5303 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5304 || (hp->type != T_MACRO && hp->type != T_CONST)
5305 || (hp->type == T_MACRO
5306 && !compare_defs (mdef.defn, hp->value.defn)
5307 && (mdef.defn->length != 2
5308 || mdef.defn->expansion[0] != '\n'
5309 || mdef.defn->expansion[1] != ' ')))
5311 } else if (!strncmp (prec, "undef", 5)) {
5316 while (is_hor_space[(U_CHAR) *prec])
5319 while (is_idchar[(U_CHAR) *prec])
5323 if (lookup ((U_CHAR *) name, len, -1))
5326 error ("Bad format encountered while reading precompiled file");
5331 /* They all passed successfully */
5335 /* Process the main body of a precompiled file. BUF points to the
5336 string section of the file, following the preconditions. LIMIT is one
5337 character past the end. NAME is the name of the file being read
5338 in. OP is the main output buffer */
5340 pcfinclude (buf, limit, name, op)
5341 U_CHAR *buf, *limit, *name;
5348 /* First in the file comes 4 bytes indicating the number of strings, */
5349 /* in network byte order. (MSB first). */
5351 nstrings = (nstrings << 8) | *cp++;
5352 nstrings = (nstrings << 8) | *cp++;
5353 nstrings = (nstrings << 8) | *cp++;
5355 /* Looping over each string... */
5356 while (nstrings--) {
5357 U_CHAR *string_start;
5358 U_CHAR *endofthiskey;
5362 /* Each string starts with a STRINGDEF structure (str), followed */
5363 /* by the text of the string (string_start) */
5365 /* First skip to a longword boundary */
5366 /* ??? Why a 4-byte boundary? On all machines? */
5367 /* NOTE: This works correctly even if HOST_WIDE_INT
5368 is narrower than a pointer.
5369 Do not try risky measures here to get another type to use!
5370 Do not include stddef.h--it will fail! */
5371 if ((HOST_WIDE_INT) cp & 3)
5372 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5374 /* Now get the string. */
5375 str = (STRINGDEF *) (GENERIC_PTR) cp;
5376 string_start = cp += sizeof (STRINGDEF);
5378 for (; *cp; cp++) /* skip the string */
5381 /* We need to macro expand the string here to ensure that the
5382 proper definition environment is in place. If it were only
5383 expanded when we find out it is needed, macros necessary for
5384 its proper expansion might have had their definitions changed. */
5385 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5386 /* Lineno is already set in the precompiled file */
5387 str->contents = tmpbuf.buf;
5388 str->len = tmpbuf.length;
5390 str->filename = name;
5391 str->output_mark = outbuf.bufp - outbuf.buf;
5394 *stringlist_tailp = str;
5395 stringlist_tailp = &str->chain;
5397 /* Next comes a fourbyte number indicating the number of keys */
5398 /* for this string. */
5400 nkeys = (nkeys << 8) | *cp++;
5401 nkeys = (nkeys << 8) | *cp++;
5402 nkeys = (nkeys << 8) | *cp++;
5404 /* If this number is -1, then the string is mandatory. */
5408 /* Otherwise, for each key, */
5409 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5410 KEYDEF *kp = (KEYDEF *) (GENERIC_PTR) cp;
5413 /* It starts with a KEYDEF structure */
5414 cp += sizeof (KEYDEF);
5416 /* Find the end of the key. At the end of this for loop we
5417 advance CP to the start of the next key using this variable. */
5418 endofthiskey = cp + strlen ((char *) cp);
5421 /* Expand the key, and enter it into the hash table. */
5422 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5423 tmpbuf.bufp = tmpbuf.buf;
5425 while (is_hor_space[*tmpbuf.bufp])
5427 if (!is_idstart[*tmpbuf.bufp]
5428 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5433 hp = lookup (tmpbuf.bufp, -1, -1);
5436 install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
5438 else if (hp->type == T_PCSTRING) {
5439 kp->chain = hp->value.keydef;
5440 hp->value.keydef = kp;
5446 /* This output_line_directive serves to switch us back to the current
5447 input file in case some of these strings get output (which will
5448 result in line directives for the header file being output). */
5449 output_line_directive (&instack[indepth], op, 0, enter_file);
5452 /* Called from rescan when it hits a key for strings. Mark them all */
5453 /* used and clean up. */
5460 for (kp = hp->value.keydef; kp; kp = kp->chain)
5461 kp->str->writeflag = 1;
5465 /* Write the output, interspersing precompiled strings in their */
5466 /* appropriate places. */
5470 STRINGDEF *next_string;
5471 U_CHAR *cur_buf_loc;
5472 int line_directive_len = 80;
5473 char *line_directive = xmalloc (line_directive_len);
5476 /* In each run through the loop, either cur_buf_loc == */
5477 /* next_string_loc, in which case we print a series of strings, or */
5478 /* it is less than next_string_loc, in which case we write some of */
5480 cur_buf_loc = outbuf.buf;
5481 next_string = stringlist;
5483 while (cur_buf_loc < outbuf.bufp || next_string) {
5485 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5486 if (next_string->writeflag) {
5487 len = 4 * strlen ((char *) next_string->filename) + 32;
5488 while (len > line_directive_len)
5489 line_directive = xrealloc (line_directive,
5490 line_directive_len *= 2);
5491 sprintf (line_directive, "\n# %d ", next_string->lineno);
5492 strcpy (quote_string (line_directive + strlen (line_directive),
5493 (char *) next_string->filename),
5495 safe_write (fileno (stdout), line_directive, strlen (line_directive));
5496 safe_write (fileno (stdout),
5497 (char *) next_string->contents, next_string->len);
5499 next_string = next_string->chain;
5503 ? (next_string->output_mark
5504 - (cur_buf_loc - outbuf.buf))
5505 : outbuf.bufp - cur_buf_loc);
5507 safe_write (fileno (stdout), (char *) cur_buf_loc, len);
5511 free (line_directive);
5514 /* Pass a directive through to the output file.
5515 BUF points to the contents of the directive, as a contiguous string.
5516 LIMIT points to the first character past the end of the directive.
5517 KEYWORD is the keyword-table entry for the directive. */
5520 pass_thru_directive (buf, limit, op, keyword)
5521 U_CHAR *buf, *limit;
5523 struct directive *keyword;
5525 register unsigned keyword_length = keyword->length;
5527 check_expand (op, 1 + keyword_length + (limit - buf));
5529 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5530 op->bufp += keyword_length;
5531 if (limit != buf && buf[0] != ' ')
5533 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5534 op->bufp += (limit - buf);
5537 /* Count the line we have just made in the output,
5538 to get in sync properly. */
5543 /* The arglist structure is built by do_define to tell
5544 collect_definition where the argument names begin. That
5545 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5546 would contain pointers to the strings x, y, and z.
5547 Collect_definition would then build a DEFINITION node,
5548 with reflist nodes pointing to the places x, y, and z had
5549 appeared. So the arglist is just convenience data passed
5550 between these two routines. It is not kept around after
5551 the current #define has been processed and entered into the
5555 struct arglist *next;
5562 /* Create a DEFINITION node from a #define directive. Arguments are
5563 as for do_define. */
5565 create_definition (buf, limit, op)
5566 U_CHAR *buf, *limit;
5569 U_CHAR *bp; /* temp ptr into input buffer */
5570 U_CHAR *symname; /* remember where symbol name starts */
5571 int sym_length; /* and how long it is */
5572 int line = instack[indepth].lineno;
5573 char *file = instack[indepth].nominal_fname;
5577 int arglengths = 0; /* Accumulate lengths of arg names
5578 plus number of args. */
5583 while (is_hor_space[*bp])
5586 symname = bp; /* remember where it starts */
5587 sym_length = check_macro_name (bp, "macro");
5590 /* Lossage will occur if identifiers or control keywords are broken
5591 across lines using backslash. This is not the right place to take
5595 struct arglist *arg_ptrs = NULL;
5598 bp++; /* skip '(' */
5599 SKIP_WHITE_SPACE (bp);
5601 /* Loop over macro argument names. */
5602 while (*bp != ')') {
5603 struct arglist *temp;
5605 temp = (struct arglist *) alloca (sizeof (struct arglist));
5607 temp->next = arg_ptrs;
5608 temp->argno = argno++;
5609 temp->rest_args = 0;
5613 pedwarn ("another parameter follows `%s'",
5616 if (!is_idstart[*bp])
5617 pedwarn ("invalid character in macro parameter name");
5619 /* Find the end of the arg name. */
5620 while (is_idchar[*bp]) {
5622 /* do we have a "special" rest-args extension here? */
5623 if (limit - bp > REST_EXTENSION_LENGTH &&
5624 bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5626 temp->rest_args = 1;
5630 temp->length = bp - temp->name;
5632 bp += REST_EXTENSION_LENGTH;
5633 arglengths += temp->length + 2;
5634 SKIP_WHITE_SPACE (bp);
5635 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5636 error ("badly punctuated parameter list in `#define'");
5641 SKIP_WHITE_SPACE (bp);
5642 /* A comma at this point can only be followed by an identifier. */
5643 if (!is_idstart[*bp]) {
5644 error ("badly punctuated parameter list in `#define'");
5649 error ("unterminated parameter list in `#define'");
5653 struct arglist *otemp;
5655 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5656 if (temp->length == otemp->length &&
5657 bcmp (temp->name, otemp->name, temp->length) == 0) {
5658 error ("duplicate argument name `%.*s' in `#define'",
5659 temp->length, temp->name);
5665 ++bp; /* skip paren */
5666 SKIP_WHITE_SPACE (bp);
5667 /* now everything from bp before limit is the definition. */
5668 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5669 defn->rest_args = rest_args;
5671 /* Now set defn->args.argnames to the result of concatenating
5672 the argument names in reverse order
5673 with comma-space between them. */
5674 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5676 struct arglist *temp;
5678 for (temp = arg_ptrs; temp; temp = temp->next) {
5679 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5681 if (temp->next != 0) {
5682 defn->args.argnames[i++] = ',';
5683 defn->args.argnames[i++] = ' ';
5686 defn->args.argnames[i] = 0;
5689 /* Simple expansion or empty definition. */
5693 if (is_hor_space[*bp]) {
5695 SKIP_WHITE_SPACE (bp);
5698 case '!': case '"': case '#': case '%': case '&': case '\'':
5699 case ')': case '*': case '+': case ',': case '-': case '.':
5700 case '/': case ':': case ';': case '<': case '=': case '>':
5701 case '?': case '[': case '\\': case ']': case '^': case '{':
5702 case '|': case '}': case '~':
5703 warning ("missing white space after `#define %.*s'",
5704 sym_length, symname);
5708 pedwarn ("missing white space after `#define %.*s'",
5709 sym_length, symname);
5714 /* Now everything from bp before limit is the definition. */
5715 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5716 defn->args.argnames = (U_CHAR *) "";
5722 /* OP is null if this is a predefinition */
5723 defn->predefined = !op;
5725 mdef.symnam = symname;
5726 mdef.symlen = sym_length;
5735 /* Process a #define directive.
5736 BUF points to the contents of the #define directive, as a contiguous string.
5737 LIMIT points to the first character past the end of the definition.
5738 KEYWORD is the keyword-table entry for #define. */
5741 do_define (buf, limit, op, keyword)
5742 U_CHAR *buf, *limit;
5744 struct directive *keyword;
5749 /* If this is a precompiler run (with -pcp) pass thru #define directives. */
5750 if (pcp_outfile && op)
5751 pass_thru_directive (buf, limit, op, keyword);
5753 mdef = create_definition (buf, limit, op);
5757 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5761 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5763 /* Redefining a precompiled key is ok. */
5764 if (hp->type == T_PCSTRING)
5766 /* Redefining a macro is ok if the definitions are the same. */
5767 else if (hp->type == T_MACRO)
5768 ok = ! compare_defs (mdef.defn, hp->value.defn);
5769 /* Redefining a constant is ok with -D. */
5770 else if (hp->type == T_CONST)
5771 ok = ! done_initializing;
5772 /* Print the warning if it's not ok. */
5774 /* If we are passing through #define and #undef directives, do
5775 that for this re-definition now. */
5776 if (debug_output && op)
5777 pass_thru_directive (buf, limit, op, keyword);
5779 pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam);
5780 if (hp->type == T_MACRO)
5781 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5782 "this is the location of the previous definition");
5784 /* Replace the old definition. */
5786 hp->value.defn = mdef.defn;
5788 /* If we are passing through #define and #undef directives, do
5789 that for this new definition now. */
5790 if (debug_output && op)
5791 pass_thru_directive (buf, limit, op, keyword);
5792 install (mdef.symnam, mdef.symlen, T_MACRO,
5793 (char *) mdef.defn, hashcode);
5804 /* Check a purported macro name SYMNAME, and yield its length.
5805 USAGE is the kind of name this is intended for. */
5808 check_macro_name (symname, usage)
5815 for (p = symname; is_idchar[*p]; p++)
5817 sym_length = p - symname;
5818 if (sym_length == 0)
5819 error ("invalid %s name", usage);
5820 else if (!is_idstart[*symname]
5821 || (sym_length == 7 && ! bcmp (symname, "defined", 7)))
5822 error ("invalid %s name `%.*s'", usage, sym_length, symname);
5827 * return zero if two DEFINITIONs are isomorphic
5830 compare_defs (d1, d2)
5831 DEFINITION *d1, *d2;
5833 register struct reflist *a1, *a2;
5834 register U_CHAR *p1 = d1->expansion;
5835 register U_CHAR *p2 = d2->expansion;
5838 if (d1->nargs != d2->nargs)
5840 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5842 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5843 a1 = a1->next, a2 = a2->next) {
5844 if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars))
5845 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5846 || a1->argno != a2->argno
5847 || a1->stringify != a2->stringify
5848 || a1->raw_before != a2->raw_before
5849 || a1->raw_after != a2->raw_after)
5857 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5858 p2, d2->length - (p2 - d2->expansion), 1))
5863 /* Return 1 if two parts of two macro definitions are effectively different.
5864 One of the parts starts at BEG1 and has LEN1 chars;
5865 the other has LEN2 chars at BEG2.
5866 Any sequence of whitespace matches any other sequence of whitespace.
5867 FIRST means these parts are the first of a macro definition;
5868 so ignore leading whitespace entirely.
5869 LAST means these parts are the last of a macro definition;
5870 so ignore trailing whitespace entirely. */
5873 comp_def_part (first, beg1, len1, beg2, len2, last)
5875 U_CHAR *beg1, *beg2;
5879 register U_CHAR *end1 = beg1 + len1;
5880 register U_CHAR *end2 = beg2 + len2;
5882 while (beg1 != end1 && is_space[*beg1]) beg1++;
5883 while (beg2 != end2 && is_space[*beg2]) beg2++;
5886 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5887 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5889 while (beg1 != end1 && beg2 != end2) {
5890 if (is_space[*beg1] && is_space[*beg2]) {
5891 while (beg1 != end1 && is_space[*beg1]) beg1++;
5892 while (beg2 != end2 && is_space[*beg2]) beg2++;
5893 } else if (*beg1 == *beg2) {
5897 return (beg1 != end1) || (beg2 != end2);
5900 /* Read a replacement list for a macro with parameters.
5901 Build the DEFINITION structure.
5902 Reads characters of text starting at BUF until END.
5903 ARGLIST specifies the formal parameters to look for
5904 in the text of the definition; NARGS is the number of args
5905 in that list, or -1 for a macro name that wants no argument list.
5906 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5907 and NAMELEN is its length in characters.
5909 Note that comments, backslash-newlines, and leading white space
5910 have already been deleted from the argument. */
5912 /* If there is no trailing whitespace, a Newline Space is added at the end
5913 to prevent concatenation that would be contrary to the standard. */
5916 collect_expansion (buf, end, nargs, arglist)
5919 struct arglist *arglist;
5922 register U_CHAR *p, *limit, *lastp, *exp_p;
5923 struct reflist *endpat = NULL;
5924 /* Pointer to first nonspace after last ## seen. */
5926 /* Pointer to first nonspace after last single-# seen. */
5927 U_CHAR *stringify = 0;
5928 /* How those tokens were spelled. */
5929 enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
5930 enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
5932 int expected_delimiter = '\0';
5934 /* Scan thru the replacement list, ignoring comments and quoted
5935 strings, picking up on the macro calls. It does a linear search
5936 thru the arg list on every potential symbol. Profiling might say
5937 that something smarter should happen. */
5942 /* Find the beginning of the trailing whitespace. */
5945 while (p < limit && is_space[limit[-1]]) limit--;
5947 /* Allocate space for the text in the macro definition.
5948 Each input char may or may not need 1 byte,
5949 so this is an upper bound.
5950 The extra 3 are for invented trailing newline-marker and final null. */
5951 maxsize = (sizeof (DEFINITION)
5953 defn = (DEFINITION *) xcalloc (1, maxsize);
5955 defn->nargs = nargs;
5956 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5961 : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
5962 error ("`##' at start of macro definition");
5963 p += p[0] == '#' ? 2 : 4;
5966 /* Process the main body of the definition. */
5968 int skipped_arg = 0;
5969 register U_CHAR c = *p++;
5977 if (expected_delimiter != '\0') {
5978 if (c == expected_delimiter)
5979 expected_delimiter = '\0';
5981 expected_delimiter = c;
5985 if (p < limit && expected_delimiter) {
5986 /* In a string, backslash goes through
5987 and makes next char ordinary. */
5993 if (!expected_delimiter && *p == ':') {
5994 /* %: is not a digraph if preceded by an odd number of '<'s. */
5996 while (buf < p0 && p0[-1] == '<')
5999 /* Treat %:%: as ## and %: as #. */
6000 if (p[1] == '%' && p[2] == ':') {
6002 goto sharp_sharp_token;
6013 /* # is ordinary inside a string. */
6014 if (expected_delimiter)
6018 /* ##: concatenate preceding and following tokens. */
6019 /* Take out the first #, discard preceding whitespace. */
6021 while (exp_p > lastp && is_hor_space[exp_p[-1]])
6023 /* Skip the second #. */
6025 concat_sharp_token_type = c;
6026 if (is_hor_space[*p]) {
6027 concat_sharp_token_type++;
6029 SKIP_WHITE_SPACE (p);
6033 error ("`##' at end of macro definition");
6034 } else if (nargs >= 0) {
6035 /* Single #: stringify following argument ref.
6036 Don't leave the # in the expansion. */
6039 stringify_sharp_token_type = c;
6040 if (is_hor_space[*p]) {
6041 stringify_sharp_token_type++;
6043 SKIP_WHITE_SPACE (p);
6045 if (! is_idstart[*p] || nargs == 0)
6046 error ("`#' operator is not followed by a macro argument name");
6053 /* In -traditional mode, recognize arguments inside strings and
6054 and character constants, and ignore special properties of #.
6055 Arguments inside strings are considered "stringified", but no
6056 extra quote marks are supplied. */
6060 if (expected_delimiter != '\0') {
6061 if (c == expected_delimiter)
6062 expected_delimiter = '\0';
6064 expected_delimiter = c;
6068 /* Backslash quotes delimiters and itself, but not macro args. */
6069 if (expected_delimiter != 0 && p < limit
6070 && (*p == expected_delimiter || *p == '\\')) {
6077 if (expected_delimiter != '\0') /* No comments inside strings. */
6080 /* If we find a comment that wasn't removed by handle_directive,
6081 this must be -traditional. So replace the comment with
6085 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
6088 /* Mark this as a concatenation-point, as if it had been ##. */
6096 /* Handle the start of a symbol. */
6097 if (is_idchar[c] && nargs > 0) {
6098 U_CHAR *id_beg = p - 1;
6102 while (p != limit && is_idchar[*p]) p++;
6103 id_len = p - id_beg;
6105 if (is_idstart[c]) {
6106 register struct arglist *arg;
6108 for (arg = arglist; arg != NULL; arg = arg->next) {
6109 struct reflist *tpat;
6111 if (arg->name[0] == c
6112 && arg->length == id_len
6113 && bcmp (arg->name, id_beg, id_len) == 0) {
6114 enum sharp_token_type tpat_stringify;
6115 if (expected_delimiter) {
6116 if (warn_stringify) {
6118 warning ("macro argument `%.*s' is stringified.",
6121 warning ("macro arg `%.*s' would be stringified with -traditional.",
6125 /* If ANSI, don't actually substitute inside a string. */
6128 tpat_stringify = SHARP_TOKEN;
6131 = (stringify == id_beg
6132 ? stringify_sharp_token_type : NO_SHARP_TOKEN);
6134 /* make a pat node for this arg and append it to the end of
6136 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
6139 = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
6140 tpat->raw_after = NO_SHARP_TOKEN;
6141 tpat->rest_args = arg->rest_args;
6142 tpat->stringify = tpat_stringify;
6145 defn->pattern = tpat;
6147 endpat->next = tpat;
6150 tpat->argno = arg->argno;
6151 tpat->nchars = exp_p - lastp;
6153 register U_CHAR *p1 = p;
6154 SKIP_WHITE_SPACE (p1);
6157 : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
6158 tpat->raw_after = p1[0] + (p != p1);
6160 lastp = exp_p; /* place to start copying from next time */
6167 /* If this was not a macro arg, copy it into the expansion. */
6168 if (! skipped_arg) {
6169 register U_CHAR *lim1 = p;
6173 if (stringify == id_beg)
6174 error ("`#' operator should be followed by a macro argument name");
6179 if (!traditional && expected_delimiter == 0) {
6180 /* If ANSI, put in a newline-space marker to prevent token pasting.
6181 But not if "inside a string" (which in ANSI mode happens only for
6189 defn->length = exp_p - defn->expansion;
6191 /* Crash now if we overrun the allocated size. */
6192 if (defn->length + 1 > maxsize)
6196 /* This isn't worth the time it takes. */
6197 /* give back excess storage */
6198 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
6205 do_assert (buf, limit, op, keyword)
6206 U_CHAR *buf, *limit;
6208 struct directive *keyword;
6210 U_CHAR *bp; /* temp ptr into input buffer */
6211 U_CHAR *symname; /* remember where symbol name starts */
6212 int sym_length; /* and how long it is */
6213 struct arglist *tokens = NULL;
6215 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6216 pedwarn ("ANSI C does not allow `#assert'");
6220 while (is_hor_space[*bp])
6223 symname = bp; /* remember where it starts */
6224 sym_length = check_macro_name (bp, "assertion");
6226 /* #define doesn't do this, but we should. */
6227 SKIP_WHITE_SPACE (bp);
6229 /* Lossage will occur if identifiers or control tokens are broken
6230 across lines using backslash. This is not the right place to take
6234 error ("missing token-sequence in `#assert'");
6241 bp++; /* skip '(' */
6242 SKIP_WHITE_SPACE (bp);
6244 tokens = read_token_list (&bp, limit, &error_flag);
6248 error ("empty token-sequence in `#assert'");
6252 ++bp; /* skip paren */
6253 SKIP_WHITE_SPACE (bp);
6256 /* If this name isn't already an assertion name, make it one.
6257 Error if it was already in use in some other way. */
6260 ASSERTION_HASHNODE *hp;
6261 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6262 struct tokenlist_list *value
6263 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
6265 hp = assertion_lookup (symname, sym_length, hashcode);
6267 if (sym_length == 7 && ! bcmp (symname, "defined", 7))
6268 error ("`defined' redefined as assertion");
6269 hp = assertion_install (symname, sym_length, hashcode);
6272 /* Add the spec'd token-sequence to the list of such. */
6273 value->tokens = tokens;
6274 value->next = hp->value;
6282 do_unassert (buf, limit, op, keyword)
6283 U_CHAR *buf, *limit;
6285 struct directive *keyword;
6287 U_CHAR *bp; /* temp ptr into input buffer */
6288 U_CHAR *symname; /* remember where symbol name starts */
6289 int sym_length; /* and how long it is */
6291 struct arglist *tokens = NULL;
6292 int tokens_specified = 0;
6294 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6295 pedwarn ("ANSI C does not allow `#unassert'");
6299 while (is_hor_space[*bp])
6302 symname = bp; /* remember where it starts */
6303 sym_length = check_macro_name (bp, "assertion");
6305 /* #define doesn't do this, but we should. */
6306 SKIP_WHITE_SPACE (bp);
6308 /* Lossage will occur if identifiers or control tokens are broken
6309 across lines using backslash. This is not the right place to take
6315 bp++; /* skip '(' */
6316 SKIP_WHITE_SPACE (bp);
6318 tokens = read_token_list (&bp, limit, &error_flag);
6322 error ("empty token list in `#unassert'");
6326 tokens_specified = 1;
6328 ++bp; /* skip paren */
6329 SKIP_WHITE_SPACE (bp);
6333 ASSERTION_HASHNODE *hp;
6334 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6335 struct tokenlist_list *tail, *prev;
6337 hp = assertion_lookup (symname, sym_length, hashcode);
6341 /* If no token list was specified, then eliminate this assertion
6343 if (! tokens_specified) {
6344 struct tokenlist_list *next;
6345 for (tail = hp->value; tail; tail = next) {
6347 free_token_list (tail->tokens);
6350 delete_assertion (hp);
6352 /* If a list of tokens was given, then delete any matching list. */
6357 struct tokenlist_list *next = tail->next;
6358 if (compare_token_lists (tail->tokens, tokens)) {
6362 hp->value = tail->next;
6363 free_token_list (tail->tokens);
6376 /* Test whether there is an assertion named NAME
6377 and optionally whether it has an asserted token list TOKENS.
6378 NAME is not null terminated; its length is SYM_LENGTH.
6379 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6382 check_assertion (name, sym_length, tokens_specified, tokens)
6385 int tokens_specified;
6386 struct arglist *tokens;
6388 ASSERTION_HASHNODE *hp;
6389 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6391 if (pedantic && !instack[indepth].system_header_p)
6392 pedwarn ("ANSI C does not allow testing assertions");
6394 hp = assertion_lookup (name, sym_length, hashcode);
6396 /* It is not an assertion; just return false. */
6399 /* If no token list was specified, then value is 1. */
6400 if (! tokens_specified)
6404 struct tokenlist_list *tail;
6408 /* If a list of tokens was given,
6409 then succeed if the assertion records a matching list. */
6412 if (compare_token_lists (tail->tokens, tokens))
6417 /* Fail if the assertion has no matching list. */
6422 /* Compare two lists of tokens for equality including order of tokens. */
6425 compare_token_lists (l1, l2)
6426 struct arglist *l1, *l2;
6429 if (l1->length != l2->length)
6431 if (bcmp (l1->name, l2->name, l1->length))
6437 /* Succeed if both lists end at the same time. */
6441 /* Read a space-separated list of tokens ending in a close parenthesis.
6442 Return a list of strings, in the order they were written.
6443 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6444 Parse the text starting at *BPP, and update *BPP.
6445 Don't parse beyond LIMIT. */
6447 static struct arglist *
6448 read_token_list (bpp, limit, error_flag)
6453 struct arglist *token_ptrs = 0;
6459 /* Loop over the assertion value tokens. */
6461 struct arglist *temp;
6465 /* Find the end of the token. */
6469 } else if (*bp == ')') {
6474 } else if (*bp == '"' || *bp == '\'')
6475 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6477 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6478 && *bp != '"' && *bp != '\'' && bp != limit)
6481 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6482 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6483 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6484 temp->name[bp - beg] = 0;
6485 temp->next = token_ptrs;
6487 temp->length = bp - beg;
6489 SKIP_WHITE_SPACE (bp);
6492 error ("unterminated token sequence in `#assert' or `#unassert'");
6499 /* We accumulated the names in reverse order.
6500 Now reverse them to get the proper order. */
6502 register struct arglist *prev = 0, *this, *next;
6503 for (this = token_ptrs; this; this = next) {
6513 free_token_list (tokens)
6514 struct arglist *tokens;
6517 struct arglist *next = tokens->next;
6518 free (tokens->name);
6525 * Install a name in the assertion hash table.
6527 * If LEN is >= 0, it is the length of the name.
6528 * Otherwise, compute the length by scanning the entire name.
6530 * If HASH is >= 0, it is the precomputed hash code.
6531 * Otherwise, compute the hash code.
6533 static ASSERTION_HASHNODE *
6534 assertion_install (name, len, hash)
6539 register ASSERTION_HASHNODE *hp;
6540 register int i, bucket;
6541 register U_CHAR *p, *q;
6543 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6544 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6546 hp->bucket_hdr = &assertion_hashtab[bucket];
6547 hp->next = assertion_hashtab[bucket];
6548 assertion_hashtab[bucket] = hp;
6550 if (hp->next != NULL)
6551 hp->next->prev = hp;
6554 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6557 for (i = 0; i < len; i++)
6564 * find the most recent hash node for name name (ending with first
6565 * non-identifier char) installed by install
6567 * If LEN is >= 0, it is the length of the name.
6568 * Otherwise, compute the length by scanning the entire name.
6570 * If HASH is >= 0, it is the precomputed hash code.
6571 * Otherwise, compute the hash code.
6573 static ASSERTION_HASHNODE *
6574 assertion_lookup (name, len, hash)
6579 register ASSERTION_HASHNODE *bucket;
6581 bucket = assertion_hashtab[hash];
6583 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
6585 bucket = bucket->next;
6591 delete_assertion (hp)
6592 ASSERTION_HASHNODE *hp;
6595 if (hp->prev != NULL)
6596 hp->prev->next = hp->next;
6597 if (hp->next != NULL)
6598 hp->next->prev = hp->prev;
6600 /* make sure that the bucket chain header that
6601 the deleted guy was on points to the right thing afterwards. */
6602 if (hp == *hp->bucket_hdr)
6603 *hp->bucket_hdr = hp->next;
6609 * interpret #line directive. Remembers previously seen fnames
6610 * in its very own hash table.
6612 #define FNAME_HASHSIZE 37
6615 do_line (buf, limit, op, keyword)
6616 U_CHAR *buf, *limit;
6618 struct directive *keyword;
6620 register U_CHAR *bp;
6621 FILE_BUF *ip = &instack[indepth];
6624 enum file_change_code file_change = same_file;
6626 /* Expand any macros. */
6627 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6629 /* Point to macroexpanded line, which is null-terminated now. */
6631 SKIP_WHITE_SPACE (bp);
6633 if (!isdigit (*bp)) {
6634 error ("invalid format `#line' directive");
6638 /* The Newline at the end of this line remains to be processed.
6639 To put the next line at the specified line number,
6640 we must store a line number now that is one less. */
6641 new_lineno = atoi ((char *) bp) - 1;
6643 /* NEW_LINENO is one less than the actual line number here. */
6644 if (pedantic && new_lineno < 0)
6645 pedwarn ("line number out of range in `#line' directive");
6647 /* skip over the line number. */
6648 while (isdigit (*bp))
6651 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6652 if (*bp && !is_space[*bp]) {
6653 error ("invalid format `#line' directive");
6658 SKIP_WHITE_SPACE (bp);
6661 static HASHNODE *fname_table[FNAME_HASHSIZE];
6662 HASHNODE *hp, **hash_bucket;
6668 /* Turn the file name, which is a character string literal,
6669 into a null-terminated string. Do this in place. */
6672 switch ((*p++ = *bp++)) {
6674 error ("invalid format `#line' directive");
6679 char *bpc = (char *) bp;
6680 int c = parse_escape (&bpc);
6681 bp = (U_CHAR *) bpc;
6694 fname_length = p - fname;
6696 SKIP_WHITE_SPACE (bp);
6699 pedwarn ("garbage at end of `#line' directive");
6701 file_change = enter_file;
6702 else if (*bp == '2')
6703 file_change = leave_file;
6704 else if (*bp == '3')
6705 ip->system_header_p = 1;
6706 else if (*bp == '4')
6707 ip->system_header_p = 2;
6709 error ("invalid format `#line' directive");
6714 SKIP_WHITE_SPACE (bp);
6716 ip->system_header_p = 1;
6718 SKIP_WHITE_SPACE (bp);
6721 ip->system_header_p = 2;
6723 SKIP_WHITE_SPACE (bp);
6726 error ("invalid format `#line' directive");
6732 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6733 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6734 if (hp->length == fname_length &&
6735 bcmp (hp->value.cpval, fname, fname_length) == 0) {
6736 ip->nominal_fname = hp->value.cpval;
6740 /* Didn't find it; cons up a new one. */
6741 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6742 hp->next = *hash_bucket;
6745 hp->length = fname_length;
6746 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6747 bcopy (fname, hp->value.cpval, fname_length);
6750 error ("invalid format `#line' directive");
6754 ip->lineno = new_lineno;
6755 output_line_directive (ip, op, 0, file_change);
6756 check_expand (op, ip->length - (ip->bufp - ip->buf));
6761 * remove the definition of a symbol from the symbol table.
6762 * according to un*x /lib/cpp, it is not an error to undef
6763 * something that has no definitions, so it isn't one here either.
6767 do_undef (buf, limit, op, keyword)
6768 U_CHAR *buf, *limit;
6770 struct directive *keyword;
6774 U_CHAR *orig_buf = buf;
6776 /* If this is a precompiler run (with -pcp) pass thru #undef directives. */
6777 if (pcp_outfile && op)
6778 pass_thru_directive (buf, limit, op, keyword);
6780 SKIP_WHITE_SPACE (buf);
6781 sym_length = check_macro_name (buf, "macro");
6783 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6784 /* If we are generating additional info for debugging (with -g) we
6785 need to pass through all effective #undef directives. */
6786 if (debug_output && op)
6787 pass_thru_directive (orig_buf, limit, op, keyword);
6788 if (hp->type != T_MACRO)
6789 warning ("undefining `%s'", hp->name);
6795 SKIP_WHITE_SPACE (buf);
6797 pedwarn ("garbage after `#undef' directive");
6803 * Report an error detected by the program we are processing.
6804 * Use the text of the line in the error message.
6805 * (We use error because it prints the filename & line#.)
6809 do_error (buf, limit, op, keyword)
6810 U_CHAR *buf, *limit;
6812 struct directive *keyword;
6814 int length = limit - buf;
6815 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6816 bcopy ((char *) buf, (char *) copy, length);
6818 SKIP_WHITE_SPACE (copy);
6819 error ("#error %s", copy);
6824 * Report a warning detected by the program we are processing.
6825 * Use the text of the line in the warning message, then continue.
6826 * (We use error because it prints the filename & line#.)
6830 do_warning (buf, limit, op, keyword)
6831 U_CHAR *buf, *limit;
6833 struct directive *keyword;
6835 int length = limit - buf;
6836 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6837 bcopy ((char *) buf, (char *) copy, length);
6839 SKIP_WHITE_SPACE (copy);
6840 warning ("#warning %s", copy);
6844 /* Remember the name of the current file being read from so that we can
6845 avoid ever including it again. */
6851 FILE_BUF *ip = NULL;
6853 for (i = indepth; i >= 0; i--)
6854 if (instack[i].fname != NULL) {
6860 struct file_name_list *new;
6862 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
6863 new->next = dont_repeat_files;
6864 dont_repeat_files = new;
6865 new->fname = savestring (ip->fname);
6866 new->control_macro = 0;
6867 new->got_name_map = 0;
6868 new->c_system_include_path = 0;
6872 /* #ident has already been copied to the output file, so just ignore it. */
6875 do_ident (buf, limit, op, keyword)
6876 U_CHAR *buf, *limit;
6878 struct directive *keyword;
6883 /* Allow #ident in system headers, since that's not user's fault. */
6884 if (pedantic && !instack[indepth].system_header_p)
6885 pedwarn ("ANSI C does not allow `#ident'");
6887 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6888 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6889 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6890 limit = buf + (trybuf.bufp - trybuf.buf);
6891 len = (limit - buf);
6894 /* Output directive name. */
6895 check_expand (op, 7);
6896 bcopy ("#ident ", (char *) op->bufp, 7);
6899 /* Output the expanded argument line. */
6900 check_expand (op, len);
6901 bcopy ((char *) buf, (char *) op->bufp, len);
6907 /* #pragma and its argument line have already been copied to the output file.
6908 Just check for some recognized pragmas that need validation here. */
6911 do_pragma (buf, limit, op, keyword)
6912 U_CHAR *buf, *limit;
6914 struct directive *keyword;
6916 SKIP_WHITE_SPACE (buf);
6917 if (!strncmp ((char *) buf, "once", 4)) {
6918 /* Allow #pragma once in system headers, since that's not the user's
6920 if (!instack[indepth].system_header_p)
6921 warning ("`#pragma once' is obsolete");
6925 if (!strncmp ((char *) buf, "implementation", 14)) {
6926 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6927 been included yet. */
6928 struct file_name_list *ptr;
6929 U_CHAR *p = buf + 14, *fname, *inc_fname;
6930 SKIP_WHITE_SPACE (p);
6931 if (*p == '\n' || *p != '\"')
6935 if ((p = (U_CHAR *) index ((char *) fname, '\"')))
6938 for (ptr = all_include_files; ptr; ptr = ptr->next) {
6939 inc_fname = (U_CHAR *) rindex (ptr->fname, '/');
6940 inc_fname = inc_fname ? inc_fname + 1 : (U_CHAR *) ptr->fname;
6941 if (inc_fname && !strcmp ((char *) inc_fname, (char *) fname))
6942 warning ("`#pragma implementation' for `%s' appears after file is included",
6951 /* This was a fun hack, but #pragma seems to start to be useful.
6952 By failing to recognize it, we pass it through unchanged to cc1. */
6955 * the behavior of the #pragma directive is implementation defined.
6956 * this implementation defines it as follows.
6963 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6966 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6968 execl ("/usr/games/hack", "#pragma", 0);
6969 execl ("/usr/games/rogue", "#pragma", 0);
6970 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6971 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6973 fatal ("You are in a maze of twisty compiler features, all different");
6977 #ifdef SCCS_DIRECTIVE
6979 /* Just ignore #sccs, on systems where we define it at all. */
6982 do_sccs (buf, limit, op, keyword)
6983 U_CHAR *buf, *limit;
6985 struct directive *keyword;
6988 pedwarn ("ANSI C does not allow `#sccs'");
6992 #endif /* defined (SCCS_DIRECTIVE) */
6995 * handle #if directive by
6996 * 1) inserting special `defined' keyword into the hash table
6997 * that gets turned into 0 or 1 by special_symbol (thus,
6998 * if the luser has a symbol called `defined' already, it won't
6999 * work inside the #if directive)
7000 * 2) rescan the input into a temporary output buffer
7001 * 3) pass the output buffer to the yacc parser and collect a value
7002 * 4) clean up the mess left from steps 1 and 2.
7003 * 5) call conditional_skip to skip til the next #endif (etc.),
7004 * or not, depending on the value from step 3.
7008 do_if (buf, limit, op, keyword)
7009 U_CHAR *buf, *limit;
7011 struct directive *keyword;
7013 HOST_WIDE_INT value;
7014 FILE_BUF *ip = &instack[indepth];
7016 value = eval_if_expression (buf, limit - buf);
7017 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
7022 * handle a #elif directive by not changing if_stack either.
7023 * see the comment above do_else.
7027 do_elif (buf, limit, op, keyword)
7028 U_CHAR *buf, *limit;
7030 struct directive *keyword;
7032 HOST_WIDE_INT value;
7033 FILE_BUF *ip = &instack[indepth];
7035 if (if_stack == instack[indepth].if_stack) {
7036 error ("`#elif' not within a conditional");
7039 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7040 error ("`#elif' after `#else'");
7041 fprintf (stderr, " (matches line %d", if_stack->lineno);
7042 if (if_stack->fname != NULL && ip->fname != NULL &&
7043 strcmp (if_stack->fname, ip->nominal_fname) != 0)
7044 fprintf (stderr, ", file %s", if_stack->fname);
7045 fprintf (stderr, ")\n");
7047 if_stack->type = T_ELIF;
7050 if (if_stack->if_succeeded)
7051 skip_if_group (ip, 0, op);
7053 value = eval_if_expression (buf, limit - buf);
7055 skip_if_group (ip, 0, op);
7057 ++if_stack->if_succeeded; /* continue processing input */
7058 output_line_directive (ip, op, 1, same_file);
7065 * evaluate a #if expression in BUF, of length LENGTH,
7066 * then parse the result as a C expression and return the value as an int.
7068 static HOST_WIDE_INT
7069 eval_if_expression (buf, length)
7074 HASHNODE *save_defined;
7075 HOST_WIDE_INT value;
7077 save_defined = install ((U_CHAR *) "defined", -1, T_SPEC_DEFINED,
7080 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
7082 delete_macro (save_defined); /* clean up special symbol */
7084 value = parse_c_expression ((char *) temp_obuf.buf);
7086 free (temp_obuf.buf);
7092 * routine to handle ifdef/ifndef. Try to look up the symbol,
7093 * then do or don't skip to the #endif/#else/#elif depending
7094 * on what directive is actually being processed.
7098 do_xifdef (buf, limit, op, keyword)
7099 U_CHAR *buf, *limit;
7101 struct directive *keyword;
7104 FILE_BUF *ip = &instack[indepth];
7106 int start_of_file = 0;
7107 U_CHAR *control_macro = 0;
7109 /* Detect a #ifndef at start of file (not counting comments). */
7110 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
7111 U_CHAR *p = ip->buf;
7112 while (p != directive_start) {
7116 /* Make no special provision for backslash-newline here; this is
7117 slower if backslash-newlines are present, but it's correct,
7118 and it's not worth it to tune for the rare backslash-newline. */
7120 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
7121 /* Skip this comment. */
7123 U_CHAR *save_bufp = ip->bufp;
7125 p = skip_to_end_of_comment (ip, &junk, 1);
7126 ip->bufp = save_bufp;
7131 /* If we get here, this conditional is the beginning of the file. */
7136 /* Discard leading and trailing whitespace. */
7137 SKIP_WHITE_SPACE (buf);
7138 while (limit != buf && is_hor_space[limit[-1]]) limit--;
7140 /* Find the end of the identifier at the beginning. */
7141 for (end = buf; is_idchar[*end]; end++);
7144 skip = (keyword->type == T_IFDEF);
7146 pedwarn (end == limit ? "`#%s' with no argument"
7147 : "`#%s' argument starts with punctuation",
7152 if (pedantic && buf[0] >= '0' && buf[0] <= '9')
7153 pedwarn ("`#%s' argument starts with a digit", keyword->name);
7154 else if (end != limit && !traditional)
7155 pedwarn ("garbage at end of `#%s' argument", keyword->name);
7157 hp = lookup (buf, end-buf, -1);
7160 /* Output a precondition for this macro. */
7162 (hp->type == T_CONST
7163 || (hp->type == T_MACRO && hp->value.defn->predefined)))
7164 fprintf (pcp_outfile, "#define %s\n", hp->name);
7167 fprintf (pcp_outfile, "#undef ");
7168 while (is_idchar[*cp]) /* Ick! */
7169 fputc (*cp++, pcp_outfile);
7170 putc ('\n', pcp_outfile);
7174 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
7175 if (start_of_file && !skip) {
7176 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
7177 bcopy ((char *) buf, (char *) control_macro, end - buf);
7178 control_macro[end - buf] = 0;
7182 conditional_skip (ip, skip, T_IF, control_macro, op);
7186 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
7187 If this is a #ifndef starting at the beginning of a file,
7188 CONTROL_MACRO is the macro name tested by the #ifndef.
7189 Otherwise, CONTROL_MACRO is 0. */
7192 conditional_skip (ip, skip, type, control_macro, op)
7195 enum node_type type;
7196 U_CHAR *control_macro;
7199 IF_STACK_FRAME *temp;
7201 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7202 temp->fname = ip->nominal_fname;
7203 temp->lineno = ip->lineno;
7204 temp->next = if_stack;
7205 temp->control_macro = control_macro;
7208 if_stack->type = type;
7211 skip_if_group (ip, 0, op);
7214 ++if_stack->if_succeeded;
7215 output_line_directive (ip, &outbuf, 1, same_file);
7220 * skip to #endif, #else, or #elif. adjust line numbers, etc.
7221 * leaves input ptr at the sharp sign found.
7222 * If ANY is nonzero, return at next directive of any sort.
7225 skip_if_group (ip, any, op)
7230 register U_CHAR *bp = ip->bufp, *cp;
7231 register U_CHAR *endb = ip->buf + ip->length;
7232 struct directive *kt;
7233 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
7234 U_CHAR *beg_of_line = bp;
7235 register int ident_length;
7236 U_CHAR *ident, *after_ident;
7237 /* Save info about where the group starts. */
7238 U_CHAR *beg_of_group = bp;
7239 int beg_lineno = ip->lineno;
7241 if (output_conditionals && op != 0) {
7242 char *ptr = "#failed\n";
7243 int len = strlen (ptr);
7245 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7250 check_expand (op, len);
7251 bcopy (ptr, (char *) op->bufp, len);
7254 output_line_directive (ip, op, 1, 0);
7259 case '/': /* possible comment */
7260 if (*bp == '\\' && bp[1] == '\n')
7263 || (cplusplus_comments && *bp == '/')) {
7265 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
7270 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
7271 NULL_PTR, NULL_PTR);
7274 /* Char after backslash loses its special meaning. */
7277 ++ip->lineno; /* But do update the line-count. */
7286 if (beg_of_line == 0 || traditional)
7289 while (bp[0] == '\\' && bp[1] == '\n')
7295 /* # keyword: a # must be first nonblank char on the line */
7296 if (beg_of_line == 0)
7300 /* Scan from start of line, skipping whitespace, comments
7301 and backslash-newlines, and see if we reach this #.
7302 If not, this # is not special. */
7304 /* If -traditional, require # to be at beginning of line. */
7307 if (is_hor_space[*bp])
7309 else if (*bp == '\\' && bp[1] == '\n')
7311 else if (*bp == '/' && bp[1] == '*') {
7313 while (!(*bp == '*' && bp[1] == '/'))
7317 /* There is no point in trying to deal with C++ // comments here,
7318 because if there is one, then this # must be part of the
7319 comment and we would never reach here. */
7323 if (bp != ip->bufp) {
7324 bp = ip->bufp + 1; /* Reset bp to after the #. */
7328 bp = ip->bufp + 1; /* Point after the '#' */
7329 if (ip->bufp[0] == '%') {
7330 /* Skip past the ':' again. */
7331 while (*bp == '\\') {
7338 /* Skip whitespace and \-newline. */
7340 if (is_hor_space[*bp])
7342 else if (*bp == '\\' && bp[1] == '\n')
7344 else if (*bp == '/' && bp[1] == '*') {
7346 while (!(*bp == '*' && bp[1] == '/')) {
7352 } else if (cplusplus_comments && *bp == '/' && bp[1] == '/') {
7354 while (bp[-1] == '\\' || *bp != '\n') {
7365 /* Now find end of directive name.
7366 If we encounter a backslash-newline, exchange it with any following
7367 symbol-constituents so that we end up with a contiguous name. */
7373 if (*bp == '\\' && bp[1] == '\n')
7374 name_newline_fix (bp);
7380 ident_length = bp - cp;
7384 /* A line of just `#' becomes blank. */
7386 if (ident_length == 0 && *after_ident == '\n') {
7390 if (ident_length == 0 || !is_idstart[*ident]) {
7392 while (is_idchar[*p]) {
7393 if (*p < '0' || *p > '9')
7397 /* Handle # followed by a line number. */
7398 if (p != ident && !is_idchar[*p]) {
7400 pedwarn ("`#' followed by integer");
7404 /* Avoid error for `###' and similar cases unless -pedantic. */
7406 while (*p == '#' || is_hor_space[*p]) p++;
7408 if (pedantic && !lang_asm)
7409 pedwarn ("invalid preprocessing directive");
7414 if (!lang_asm && pedantic)
7415 pedwarn ("invalid preprocessing directive name");
7419 for (kt = directive_table; kt->length >= 0; kt++) {
7420 IF_STACK_FRAME *temp;
7421 if (ident_length == kt->length
7422 && bcmp (cp, kt->name, kt->length) == 0) {
7423 /* If we are asked to return on next directive, do so now. */
7431 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7432 temp->next = if_stack;
7434 temp->lineno = ip->lineno;
7435 temp->fname = ip->nominal_fname;
7436 temp->type = kt->type;
7440 if (pedantic && if_stack != save_if_stack)
7443 if (if_stack == instack[indepth].if_stack) {
7444 error ("`#%s' not within a conditional", kt->name);
7447 else if (if_stack == save_if_stack)
7448 goto done; /* found what we came for */
7450 if (kt->type != T_ENDIF) {
7451 if (if_stack->type == T_ELSE)
7452 error ("`#else' or `#elif' after `#else'");
7453 if_stack->type = kt->type;
7458 if_stack = if_stack->next;
7468 /* Don't let erroneous code go by. */
7469 if (kt->length < 0 && !lang_asm && pedantic)
7470 pedwarn ("invalid preprocessing directive name");
7475 /* after this returns, rescan will exit because ip->bufp
7476 now points to the end of the buffer.
7477 rescan is responsible for the error message also. */
7480 if (output_conditionals && op != 0) {
7481 char *ptr = "#endfailed\n";
7482 int len = strlen (ptr);
7484 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7489 check_expand (op, beg_of_line - beg_of_group);
7490 bcopy ((char *) beg_of_group, (char *) op->bufp,
7491 beg_of_line - beg_of_group);
7492 op->bufp += beg_of_line - beg_of_group;
7493 op->lineno += ip->lineno - beg_lineno;
7494 check_expand (op, len);
7495 bcopy (ptr, (char *) op->bufp, len);
7502 * handle a #else directive. Do this by just continuing processing
7503 * without changing if_stack ; this is so that the error message
7504 * for missing #endif's etc. will point to the original #if. It
7505 * is possible that something different would be better.
7509 do_else (buf, limit, op, keyword)
7510 U_CHAR *buf, *limit;
7512 struct directive *keyword;
7514 FILE_BUF *ip = &instack[indepth];
7517 SKIP_WHITE_SPACE (buf);
7519 pedwarn ("text following `#else' violates ANSI standard");
7522 if (if_stack == instack[indepth].if_stack) {
7523 error ("`#else' not within a conditional");
7526 /* #ifndef can't have its special treatment for containing the whole file
7527 if it has a #else clause. */
7528 if_stack->control_macro = 0;
7530 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7531 error ("`#else' after `#else'");
7532 fprintf (stderr, " (matches line %d", if_stack->lineno);
7533 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7534 fprintf (stderr, ", file %s", if_stack->fname);
7535 fprintf (stderr, ")\n");
7537 if_stack->type = T_ELSE;
7540 if (if_stack->if_succeeded)
7541 skip_if_group (ip, 0, op);
7543 ++if_stack->if_succeeded; /* continue processing input */
7544 output_line_directive (ip, op, 1, same_file);
7550 * unstack after #endif directive
7554 do_endif (buf, limit, op, keyword)
7555 U_CHAR *buf, *limit;
7557 struct directive *keyword;
7560 SKIP_WHITE_SPACE (buf);
7562 pedwarn ("text following `#endif' violates ANSI standard");
7565 if (if_stack == instack[indepth].if_stack)
7566 error ("unbalanced `#endif'");
7568 IF_STACK_FRAME *temp = if_stack;
7569 if_stack = if_stack->next;
7570 if (temp->control_macro != 0) {
7571 /* This #endif matched a #ifndef at the start of the file.
7572 See if it is at the end of the file. */
7573 FILE_BUF *ip = &instack[indepth];
7574 U_CHAR *p = ip->bufp;
7575 U_CHAR *ep = ip->buf + ip->length;
7581 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
7582 /* Skip this comment. */
7584 U_CHAR *save_bufp = ip->bufp;
7586 p = skip_to_end_of_comment (ip, &junk, 1);
7587 ip->bufp = save_bufp;
7592 /* If we get here, this #endif ends a #ifndef
7593 that contains all of the file (aside from whitespace).
7594 Arrange not to include the file again
7595 if the macro that was tested is defined.
7597 Do not do this for the top-level file in a -include or any
7598 file in a -imacros. */
7600 && ! (indepth == 1 && no_record_file)
7601 && ! (no_record_file && no_output))
7602 record_control_macro (ip->fname, temp->control_macro);
7606 output_line_directive (&instack[indepth], op, 1, same_file);
7611 /* When an #else or #endif is found while skipping failed conditional,
7612 if -pedantic was specified, this is called to warn about text after
7613 the directive name. P points to the first char after the directive name. */
7619 /* Advance P over whitespace and comments. */
7621 if (*p == '\\' && p[1] == '\n')
7623 if (is_hor_space[*p])
7625 else if (*p == '/') {
7626 if (p[1] == '\\' && p[2] == '\n')
7627 newline_fix (p + 1);
7630 /* Don't bother warning about unterminated comments
7631 since that will happen later. Just be sure to exit. */
7633 if (p[1] == '\\' && p[2] == '\n')
7634 newline_fix (p + 1);
7635 if (*p == '*' && p[1] == '/') {
7642 else if (cplusplus_comments && p[1] == '/') {
7644 while (*p && (*p != '\n' || p[-1] == '\\'))
7649 if (*p && *p != '\n')
7650 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7653 /* Skip a comment, assuming the input ptr immediately follows the
7654 initial slash-star. Bump *LINE_COUNTER for each newline.
7655 (The canonical line counter is &ip->lineno.)
7656 Don't use this routine (or the next one) if bumping the line
7657 counter is not sufficient to deal with newlines in the string.
7659 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7660 This feature is useful when processing a comment that is going to be
7661 processed or was processed at another point in the preprocessor,
7662 to avoid a duplicate warning. Likewise for unterminated comment errors. */
7665 skip_to_end_of_comment (ip, line_counter, nowarn)
7666 register FILE_BUF *ip;
7667 int *line_counter; /* place to remember newlines, or NULL */
7670 register U_CHAR *limit = ip->buf + ip->length;
7671 register U_CHAR *bp = ip->bufp;
7672 FILE_BUF *op = &outbuf; /* JF */
7673 int output = put_out_comments && !line_counter;
7674 int start_line = line_counter ? *line_counter : 0;
7676 /* JF this line_counter stuff is a crock to make sure the
7677 comment is only put out once, no matter how many times
7678 the comment is skipped. It almost works */
7683 if (cplusplus_comments && bp[-1] == '/') {
7685 while (bp < limit) {
7687 if (*bp == '\n' && bp[-1] != '\\')
7699 while (bp < limit) {
7700 if (bp[-1] != '\\' && *bp == '\n') {
7703 if (*bp == '\n' && line_counter)
7712 while (bp < limit) {
7717 if (warn_comments && !nowarn && bp < limit && *bp == '*')
7718 warning ("`/*' within comment");
7721 /* If this is the end of the file, we have an unterminated comment.
7722 Don't swallow the newline. We are guaranteed that there will be a
7723 trailing newline and various pieces assume it's there. */
7730 if (line_counter != NULL)
7736 if (*bp == '\\' && bp[1] == '\n')
7749 error_with_line (line_for_error (start_line), "unterminated comment");
7755 * Skip over a quoted string. BP points to the opening quote.
7756 * Returns a pointer after the closing quote. Don't go past LIMIT.
7757 * START_LINE is the line number of the starting point (but it need
7758 * not be valid if the starting point is inside a macro expansion).
7760 * The input stack state is not changed.
7762 * If COUNT_NEWLINES is nonzero, it points to an int to increment
7763 * for each newline passed.
7765 * If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7766 * if we pass a backslash-newline.
7768 * If EOFP is nonzero, set *EOFP to 1 if the string is unterminated.
7771 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7772 register U_CHAR *bp;
7773 register U_CHAR *limit;
7775 int *count_newlines;
7776 int *backslash_newlines_p;
7779 register U_CHAR c, match;
7784 error_with_line (line_for_error (start_line),
7785 "unterminated string or character constant");
7786 error_with_line (multiline_string_line,
7787 "possible real start of unterminated constant");
7788 multiline_string_line = 0;
7795 while (*bp == '\\' && bp[1] == '\n') {
7796 if (backslash_newlines_p)
7797 *backslash_newlines_p = 1;
7802 if (*bp == '\n' && count_newlines) {
7803 if (backslash_newlines_p)
7804 *backslash_newlines_p = 1;
7808 } else if (c == '\n') {
7810 /* Unterminated strings and character constants are 'valid'. */
7811 bp--; /* Don't consume the newline. */
7816 if (pedantic || match == '\'') {
7817 error_with_line (line_for_error (start_line),
7818 "unterminated string or character constant");
7824 /* If not traditional, then allow newlines inside strings. */
7827 if (multiline_string_line == 0)
7828 multiline_string_line = start_line;
7829 } else if (c == match)
7835 /* Place into DST a quoted string representing the string SRC.
7836 Return the address of DST's terminating null. */
7838 quote_string (dst, src)
7845 switch ((c = *src++))
7852 sprintf (dst, "\\%03o", c);
7870 /* Skip across a group of balanced parens, starting from IP->bufp.
7871 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7873 This does not handle newlines, because it's used for the arg of #if,
7874 where there aren't any newlines. Also, backslash-newline can't appear. */
7877 skip_paren_group (ip)
7878 register FILE_BUF *ip;
7880 U_CHAR *limit = ip->buf + ip->length;
7881 U_CHAR *p = ip->bufp;
7883 int lines_dummy = 0;
7885 while (p != limit) {
7895 return ip->bufp = p;
7901 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7909 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7911 return ip->bufp = p;
7922 * write out a #line directive, for instance, after an #include file.
7923 * If CONDITIONAL is nonzero, we can omit the #line if it would
7924 * appear to be a no-op, and we can output a few newlines instead
7925 * if we want to increase the line number by a small amount.
7926 * FILE_CHANGE says whether we are entering a file, leaving, or neither.
7930 output_line_directive (ip, op, conditional, file_change)
7933 enum file_change_code file_change;
7936 char *line_directive_buf, *line_end;
7938 if (no_line_directives
7939 || ip->fname == NULL
7941 op->lineno = ip->lineno;
7946 if (ip->lineno == op->lineno)
7949 /* If the inherited line number is a little too small,
7950 output some newlines instead of a #line directive. */
7951 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7952 check_expand (op, 10);
7953 while (ip->lineno > op->lineno) {
7961 /* Don't output a line number of 0 if we can help it. */
7962 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7963 && *ip->bufp == '\n') {
7968 line_directive_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7969 sprintf (line_directive_buf, "# %d ", ip->lineno);
7970 line_end = quote_string (line_directive_buf + strlen (line_directive_buf),
7972 if (file_change != same_file) {
7974 *line_end++ = file_change == enter_file ? '1' : '2';
7976 /* Tell cc1 if following text comes from a system header file. */
7977 if (ip->system_header_p) {
7981 #ifndef NO_IMPLICIT_EXTERN_C
7982 /* Tell cc1plus if following text should be treated as C. */
7983 if (ip->system_header_p == 2 && cplusplus) {
7989 len = line_end - line_directive_buf;
7990 check_expand (op, len + 1);
7991 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7993 bcopy ((char *) line_directive_buf, (char *) op->bufp, len);
7995 op->lineno = ip->lineno;
7998 /* This structure represents one parsed argument in a macro call.
7999 `raw' points to the argument text as written (`raw_length' is its length).
8000 `expanded' points to the argument's macro-expansion
8001 (its length is `expand_length').
8002 `stringified_length' is the length the argument would have
8004 `use_count' is the number of times this macro arg is substituted
8005 into the macro. If the actual use count exceeds 10,
8006 the value stored is 10.
8007 `free1' and `free2', if nonzero, point to blocks to be freed
8008 when the macro argument data is no longer needed. */
8011 U_CHAR *raw, *expanded;
8012 int raw_length, expand_length;
8013 int stringified_length;
8014 U_CHAR *free1, *free2;
8019 /* Expand a macro call.
8020 HP points to the symbol that is the macro being called.
8021 Put the result of expansion onto the input stack
8022 so that subsequent input by our caller will use it.
8024 If macro wants arguments, caller has already verified that
8025 an argument list follows; arguments come from the input stack. */
8028 macroexpand (hp, op)
8033 DEFINITION *defn = hp->value.defn;
8034 register U_CHAR *xbuf;
8036 int start_line = instack[indepth].lineno;
8037 int rest_args, rest_zero;
8039 CHECK_DEPTH (return;);
8041 /* it might not actually be a macro. */
8042 if (hp->type != T_MACRO) {
8043 special_symbol (hp, op);
8047 /* This macro is being used inside a #if, which means it must be */
8048 /* recorded as a precondition. */
8049 if (pcp_inside_if && pcp_outfile && defn->predefined)
8050 dump_single_macro (hp, pcp_outfile);
8052 nargs = defn->nargs;
8056 struct argdata *args;
8057 char *parse_error = 0;
8059 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
8061 for (i = 0; i < nargs; i++) {
8062 args[i].raw = (U_CHAR *) "";
8063 args[i].expanded = 0;
8064 args[i].raw_length = args[i].expand_length
8065 = args[i].stringified_length = 0;
8066 args[i].free1 = args[i].free2 = 0;
8067 args[i].use_count = 0;
8070 /* Parse all the macro args that are supplied. I counts them.
8071 The first NARGS args are stored in ARGS.
8072 The rest are discarded.
8073 If rest_args is set then we assume macarg absorbed the rest of the args.
8078 /* Discard the open-parenthesis or comma before the next arg. */
8079 ++instack[indepth].bufp;
8082 if (i < nargs || (nargs == 0 && i == 0)) {
8083 /* if we are working on last arg which absorbs rest of args... */
8084 if (i == nargs - 1 && defn->rest_args)
8086 parse_error = macarg (&args[i], rest_args);
8089 parse_error = macarg (NULL_PTR, 0);
8091 error_with_line (line_for_error (start_line), parse_error);
8095 } while (*instack[indepth].bufp != ')');
8097 /* If we got one arg but it was just whitespace, call that 0 args. */
8099 register U_CHAR *bp = args[0].raw;
8100 register U_CHAR *lim = bp + args[0].raw_length;
8101 /* cpp.texi says for foo ( ) we provide one argument.
8102 However, if foo wants just 0 arguments, treat this as 0. */
8104 while (bp != lim && is_space[*bp]) bp++;
8109 /* Don't output an error message if we have already output one for
8110 a parse error above. */
8112 if (nargs == 0 && i > 0) {
8114 error ("arguments given to macro `%s'", hp->name);
8115 } else if (i < nargs) {
8116 /* traditional C allows foo() if foo wants one argument. */
8117 if (nargs == 1 && i == 0 && traditional)
8119 /* the rest args token is allowed to absorb 0 tokens */
8120 else if (i == nargs - 1 && defn->rest_args)
8122 else if (parse_error)
8125 error ("macro `%s' used without args", hp->name);
8127 error ("macro `%s' used with just one arg", hp->name);
8129 error ("macro `%s' used with only %d args", hp->name, i);
8130 } else if (i > nargs) {
8132 error ("macro `%s' used with too many (%d) args", hp->name, i);
8135 /* Swallow the closeparen. */
8136 ++instack[indepth].bufp;
8138 /* If macro wants zero args, we parsed the arglist for checking only.
8139 Read directly from the macro definition. */
8141 xbuf = defn->expansion;
8142 xbuf_len = defn->length;
8144 register U_CHAR *exp = defn->expansion;
8145 register int offset; /* offset in expansion,
8146 copied a piece at a time */
8147 register int totlen; /* total amount of exp buffer filled so far */
8149 register struct reflist *ap, *last_ap;
8151 /* Macro really takes args. Compute the expansion of this call. */
8153 /* Compute length in characters of the macro's expansion.
8154 Also count number of times each arg is used. */
8155 xbuf_len = defn->length;
8156 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
8158 xbuf_len += args[ap->argno].stringified_length;
8159 else if (ap->raw_before || ap->raw_after || traditional)
8160 /* Add 4 for two newline-space markers to prevent
8161 token concatenation. */
8162 xbuf_len += args[ap->argno].raw_length + 4;
8164 /* We have an ordinary (expanded) occurrence of the arg.
8165 So compute its expansion, if we have not already. */
8166 if (args[ap->argno].expanded == 0) {
8168 obuf = expand_to_temp_buffer (args[ap->argno].raw,
8169 args[ap->argno].raw + args[ap->argno].raw_length,
8172 args[ap->argno].expanded = obuf.buf;
8173 args[ap->argno].expand_length = obuf.length;
8174 args[ap->argno].free2 = obuf.buf;
8177 /* Add 4 for two newline-space markers to prevent
8178 token concatenation. */
8179 xbuf_len += args[ap->argno].expand_length + 4;
8181 if (args[ap->argno].use_count < 10)
8182 args[ap->argno].use_count++;
8185 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
8187 /* Generate in XBUF the complete expansion
8188 with arguments substituted in.
8189 TOTLEN is the total size generated so far.
8190 OFFSET is the index in the definition
8191 of where we are copying from. */
8192 offset = totlen = 0;
8193 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
8194 last_ap = ap, ap = ap->next) {
8195 register struct argdata *arg = &args[ap->argno];
8196 int count_before = totlen;
8198 /* Add chars to XBUF. */
8199 for (i = 0; i < ap->nchars; i++, offset++)
8200 xbuf[totlen++] = exp[offset];
8202 /* If followed by an empty rest arg with concatenation,
8203 delete the last run of nonwhite chars. */
8204 if (rest_zero && totlen > count_before
8205 && ((ap->rest_args && ap->raw_before)
8206 || (last_ap != NULL && last_ap->rest_args
8207 && last_ap->raw_after))) {
8208 /* Delete final whitespace. */
8209 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
8213 /* Delete the nonwhites before them. */
8214 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
8219 if (ap->stringify != 0) {
8220 int arglen = arg->raw_length;
8226 && (c = arg->raw[i], is_space[c]))
8229 && (c = arg->raw[arglen - 1], is_space[c]))
8232 xbuf[totlen++] = '\"'; /* insert beginning quote */
8233 for (; i < arglen; i++) {
8236 /* Special markers Newline Space
8237 generate nothing for a stringified argument. */
8238 if (c == '\n' && arg->raw[i+1] != '\n') {
8243 /* Internal sequences of whitespace are replaced by one space
8244 except within an string or char token. */
8246 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
8248 /* Note that Newline Space does occur within whitespace
8249 sequences; consider it part of the sequence. */
8250 if (c == '\n' && is_space[arg->raw[i+1]])
8252 else if (c != '\n' && is_space[c])
8269 } else if (c == '\"' || c == '\'')
8273 /* Escape these chars */
8274 if (c == '\"' || (in_string && c == '\\'))
8275 xbuf[totlen++] = '\\';
8279 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
8284 xbuf[totlen++] = '\"'; /* insert ending quote */
8285 } else if (ap->raw_before || ap->raw_after || traditional) {
8286 U_CHAR *p1 = arg->raw;
8287 U_CHAR *l1 = p1 + arg->raw_length;
8288 if (ap->raw_before) {
8289 while (p1 != l1 && is_space[*p1]) p1++;
8290 while (p1 != l1 && is_idchar[*p1])
8291 xbuf[totlen++] = *p1++;
8292 /* Delete any no-reexpansion marker that follows
8293 an identifier at the beginning of the argument
8294 if the argument is concatenated with what precedes it. */
8295 if (p1[0] == '\n' && p1[1] == '-')
8297 } else if (!traditional) {
8298 /* Ordinary expanded use of the argument.
8299 Put in newline-space markers to prevent token pasting. */
8300 xbuf[totlen++] = '\n';
8301 xbuf[totlen++] = ' ';
8303 if (ap->raw_after) {
8304 /* Arg is concatenated after: delete trailing whitespace,
8305 whitespace markers, and no-reexpansion markers. */
8307 if (is_space[l1[-1]]) l1--;
8308 else if (l1[-1] == '-') {
8309 U_CHAR *p2 = l1 - 1;
8310 /* If a `-' is preceded by an odd number of newlines then it
8311 and the last newline are a no-reexpansion marker. */
8312 while (p2 != p1 && p2[-1] == '\n') p2--;
8313 if ((l1 - 1 - p2) & 1) {
8322 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8324 if (!traditional && !ap->raw_after) {
8325 /* Ordinary expanded use of the argument.
8326 Put in newline-space markers to prevent token pasting. */
8327 xbuf[totlen++] = '\n';
8328 xbuf[totlen++] = ' ';
8331 /* Ordinary expanded use of the argument.
8332 Put in newline-space markers to prevent token pasting. */
8334 xbuf[totlen++] = '\n';
8335 xbuf[totlen++] = ' ';
8337 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8338 arg->expand_length);
8339 totlen += arg->expand_length;
8341 xbuf[totlen++] = '\n';
8342 xbuf[totlen++] = ' ';
8344 /* If a macro argument with newlines is used multiple times,
8345 then only expand the newlines once. This avoids creating output
8346 lines which don't correspond to any input line, which confuses
8348 if (arg->use_count > 1 && arg->newlines > 0) {
8349 /* Don't bother doing change_newlines for subsequent
8353 = change_newlines (arg->expanded, arg->expand_length);
8357 if (totlen > xbuf_len)
8361 /* if there is anything left of the definition
8362 after handling the arg list, copy that in too. */
8364 for (i = offset; i < defn->length; i++) {
8365 /* if we've reached the end of the macro */
8368 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8369 && last_ap->raw_after))
8370 xbuf[totlen++] = exp[i];
8376 for (i = 0; i < nargs; i++) {
8377 if (args[i].free1 != 0)
8378 free (args[i].free1);
8379 if (args[i].free2 != 0)
8380 free (args[i].free2);
8384 xbuf = defn->expansion;
8385 xbuf_len = defn->length;
8388 /* Now put the expansion on the input stack
8389 so our caller will commence reading from it. */
8391 register FILE_BUF *ip2;
8393 ip2 = &instack[++indepth];
8396 ip2->nominal_fname = 0;
8397 /* This may not be exactly correct, but will give much better error
8398 messages for nested macro calls than using a line number of zero. */
8399 ip2->lineno = start_line;
8401 ip2->length = xbuf_len;
8403 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8405 ip2->if_stack = if_stack;
8406 ip2->system_header_p = 0;
8408 /* Recursive macro use sometimes works traditionally.
8409 #define foo(x,y) bar (x (y,0), y)
8413 hp->type = T_DISABLED;
8418 * Parse a macro argument and store the info on it into *ARGPTR.
8419 * REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8420 * Return nonzero to indicate a syntax error.
8424 macarg (argptr, rest_args)
8425 register struct argdata *argptr;
8428 FILE_BUF *ip = &instack[indepth];
8433 /* Try to parse as much of the argument as exists at this
8434 input stack level. */
8435 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8436 &paren, &newlines, &comments, rest_args);
8438 /* If we find the end of the argument at this level,
8439 set up *ARGPTR to point at it in the input stack. */
8440 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8441 && bp != ip->buf + ip->length) {
8443 argptr->raw = ip->bufp;
8444 argptr->raw_length = bp - ip->bufp;
8445 argptr->newlines = newlines;
8449 /* This input stack level ends before the macro argument does.
8450 We must pop levels and keep parsing.
8451 Therefore, we must allocate a temporary buffer and copy
8452 the macro argument into it. */
8453 int bufsize = bp - ip->bufp;
8454 int extra = newlines;
8455 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8456 int final_start = 0;
8458 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8460 ip->lineno += newlines;
8462 while (bp == ip->buf + ip->length) {
8463 if (instack[indepth].macro == 0) {
8465 return "unterminated macro call";
8467 ip->macro->type = T_MACRO;
8469 free (ip->free_ptr);
8470 ip = &instack[--indepth];
8473 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8474 &newlines, &comments, rest_args);
8475 final_start = bufsize;
8476 bufsize += bp - ip->bufp;
8478 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8479 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8482 ip->lineno += newlines;
8485 /* Now, if arg is actually wanted, record its raw form,
8486 discarding comments and duplicating newlines in whatever
8487 part of it did not come from a macro expansion.
8488 EXTRA space has been preallocated for duplicating the newlines.
8489 FINAL_START is the index of the start of that part. */
8491 argptr->raw = buffer;
8492 argptr->raw_length = bufsize;
8493 argptr->free1 = buffer;
8494 argptr->newlines = newlines;
8495 if ((newlines || comments) && ip->fname != 0)
8498 discard_comments (argptr->raw + final_start,
8499 argptr->raw_length - final_start,
8501 argptr->raw[argptr->raw_length] = 0;
8502 if (argptr->raw_length > bufsize + extra)
8507 /* If we are not discarding this argument,
8508 macroexpand it and compute its length as stringified.
8509 All this info goes into *ARGPTR. */
8512 register U_CHAR *buf, *lim;
8513 register int totlen;
8516 lim = buf + argptr->raw_length;
8518 while (buf != lim && is_space[*buf])
8520 while (buf != lim && is_space[lim[-1]])
8522 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8523 while (buf != lim) {
8524 register U_CHAR c = *buf++;
8526 /* Internal sequences of whitespace are replaced by one space
8527 in most cases, but not always. So count all the whitespace
8528 in case we need to keep it all. */
8531 SKIP_ALL_WHITE_SPACE (buf);
8534 if (c == '\"' || c == '\\') /* escape these chars */
8536 else if (!isprint (c))
8539 argptr->stringified_length = totlen;
8544 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8545 counting parens in *DEPTHPTR,
8546 and return if reach LIMIT
8547 or before a `)' that would make *DEPTHPTR negative
8548 or before a comma when *DEPTHPTR is zero.
8549 Single and double quotes are matched and termination
8550 is inhibited within them. Comments also inhibit it.
8551 Value returned is pointer to stopping place.
8553 Increment *NEWLINES each time a newline is passed.
8554 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8555 Set *COMMENTS to 1 if a comment is seen. */
8558 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8560 register U_CHAR *limit;
8561 int *depthptr, *newlines, *comments;
8564 register U_CHAR *bp = start;
8566 while (bp < limit) {
8572 if (--(*depthptr) < 0)
8576 /* Traditionally, backslash makes following char not special. */
8577 if (bp + 1 < limit && traditional)
8580 /* But count source lines anyway. */
8589 if (bp[1] == '\\' && bp[2] == '\n')
8590 newline_fix (bp + 1);
8591 if (cplusplus_comments && bp[1] == '/') {
8594 while (bp < limit && (*bp != '\n' || bp[-1] == '\\')) {
8595 if (*bp == '\n') ++*newlines;
8598 /* Now count the newline that we are about to skip. */
8602 if (bp[1] != '*' || bp + 1 >= limit)
8606 while (bp + 1 < limit) {
8608 && bp[1] == '\\' && bp[2] == '\n')
8609 newline_fix (bp + 1);
8610 if (bp[0] == '*' && bp[1] == '/')
8612 if (*bp == '\n') ++*newlines;
8620 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8625 while (*bp == '\\' && bp[1] == '\n') {
8628 } else if (*bp == '\n') {
8637 /* if we've returned to lowest level and we aren't absorbing all args */
8638 if ((*depthptr) == 0 && rest_args == 0)
8648 /* Discard comments and duplicate newlines
8649 in the string of length LENGTH at START,
8650 except inside of string constants.
8651 The string is copied into itself with its beginning staying fixed.
8653 NEWLINES is the number of newlines that must be duplicated.
8654 We assume that that much extra space is available past the end
8658 discard_comments (start, length, newlines)
8663 register U_CHAR *ibp;
8664 register U_CHAR *obp;
8665 register U_CHAR *limit;
8668 /* If we have newlines to duplicate, copy everything
8669 that many characters up. Then, in the second part,
8670 we will have room to insert the newlines
8672 NEWLINES may actually be too large, because it counts
8673 newlines in string constants, and we don't duplicate those.
8674 But that does no harm. */
8676 ibp = start + length;
8677 obp = ibp + newlines;
8679 while (limit != ibp)
8683 ibp = start + newlines;
8684 limit = start + length + newlines;
8687 while (ibp < limit) {
8688 *obp++ = c = *ibp++;
8691 /* Duplicate the newline. */
8703 if (*ibp == '\\' && ibp[1] == '\n')
8705 /* Delete any comment. */
8706 if (cplusplus_comments && ibp[0] == '/') {
8707 /* Comments are equivalent to spaces. */
8710 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8714 if (ibp[0] != '*' || ibp + 1 >= limit)
8716 /* Comments are equivalent to spaces.
8717 For -traditional, a comment is equivalent to nothing. */
8723 while (ibp + 1 < limit) {
8725 && ibp[1] == '\\' && ibp[2] == '\n')
8726 newline_fix (ibp + 1);
8727 if (ibp[0] == '*' && ibp[1] == '/')
8736 /* Notice and skip strings, so that we don't
8737 think that comments start inside them,
8738 and so we don't duplicate newlines in them. */
8741 while (ibp < limit) {
8742 *obp++ = c = *ibp++;
8745 if (c == '\n' && quotec == '\'')
8747 if (c == '\\' && ibp < limit) {
8748 while (*ibp == '\\' && ibp[1] == '\n')
8761 /* Turn newlines to spaces in the string of length LENGTH at START,
8762 except inside of string constants.
8763 The string is copied into itself with its beginning staying fixed. */
8766 change_newlines (start, length)
8770 register U_CHAR *ibp;
8771 register U_CHAR *obp;
8772 register U_CHAR *limit;
8776 limit = start + length;
8779 while (ibp < limit) {
8780 *obp++ = c = *ibp++;
8783 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8784 string. Skip past the newline and its duplicate.
8785 Put a space in the output. */
8796 /* Notice and skip strings, so that we don't delete newlines in them. */
8799 while (ibp < limit) {
8800 *obp++ = c = *ibp++;
8803 if (c == '\n' && quotec == '\'')
8815 * my_strerror - return the descriptive text associated with an `errno' code.
8819 my_strerror (errnum)
8825 #ifndef HAVE_STRERROR
8826 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8828 result = strerror (errnum);
8831 /* VAXCRTL's strerror() takes an optional second argument, which only
8832 matters when the first argument is EVMSERR. However, it's simplest
8833 just to pass it unconditionally. `vaxc$errno' is declared in
8834 <errno.h>, and maintained by the library in parallel with `errno'.
8835 We assume that caller's `errnum' either matches the last setting of
8836 `errno' by the library or else does not have the value `EVMSERR'. */
8838 result = strerror (errnum, vaxc$errno);
8842 result = "undocumented I/O error";
8848 * error - print error message and increment count of errors.
8852 error (PRINTF_ALIST (msg))
8857 VA_START (args, msg);
8868 FILE_BUF *ip = NULL;
8870 print_containing_files ();
8872 for (i = indepth; i >= 0; i--)
8873 if (instack[i].fname != NULL) {
8879 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8880 vfprintf (stderr, msg, args);
8881 fprintf (stderr, "\n");
8885 /* Error including a message from `errno'. */
8888 error_from_errno (name)
8892 FILE_BUF *ip = NULL;
8894 print_containing_files ();
8896 for (i = indepth; i >= 0; i--)
8897 if (instack[i].fname != NULL) {
8903 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8905 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8910 /* Print error message but don't count it. */
8913 warning (PRINTF_ALIST (msg))
8918 VA_START (args, msg);
8919 vwarning (msg, args);
8924 vwarning (msg, args)
8929 FILE_BUF *ip = NULL;
8931 if (inhibit_warnings)
8934 if (warnings_are_errors)
8937 print_containing_files ();
8939 for (i = indepth; i >= 0; i--)
8940 if (instack[i].fname != NULL) {
8946 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8947 fprintf (stderr, "warning: ");
8948 vfprintf (stderr, msg, args);
8949 fprintf (stderr, "\n");
8953 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8954 error_with_line (int line, PRINTF_ALIST (msg))
8956 error_with_line (line, PRINTF_ALIST (msg))
8963 VA_START (args, msg);
8964 verror_with_line (line, msg, args);
8969 verror_with_line (line, msg, args)
8975 FILE_BUF *ip = NULL;
8977 print_containing_files ();
8979 for (i = indepth; i >= 0; i--)
8980 if (instack[i].fname != NULL) {
8986 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8987 vfprintf (stderr, msg, args);
8988 fprintf (stderr, "\n");
8993 vwarning_with_line (line, msg, args)
8999 FILE_BUF *ip = NULL;
9001 if (inhibit_warnings)
9004 if (warnings_are_errors)
9007 print_containing_files ();
9009 for (i = indepth; i >= 0; i--)
9010 if (instack[i].fname != NULL) {
9016 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
9017 fprintf (stderr, "warning: ");
9018 vfprintf (stderr, msg, args);
9019 fprintf (stderr, "\n");
9022 /* print an error message and maybe count it. */
9025 pedwarn (PRINTF_ALIST (msg))
9030 VA_START (args, msg);
9031 if (pedantic_errors)
9034 vwarning (msg, args);
9039 #if defined (__STDC__) && defined (HAVE_VPRINTF)
9040 pedwarn_with_line (int line, PRINTF_ALIST (msg))
9042 pedwarn_with_line (line, PRINTF_ALIST (msg))
9049 VA_START (args, msg);
9050 if (pedantic_errors)
9051 verror_with_line (line, msg, args);
9053 vwarning_with_line (line, msg, args);
9057 /* Report a warning (or an error if pedantic_errors)
9058 giving specified file name and line number, not current. */
9061 #if defined (__STDC__) && defined (HAVE_VPRINTF)
9062 pedwarn_with_file_and_line (char *file, int line, PRINTF_ALIST (msg))
9064 pedwarn_with_file_and_line (file, line, PRINTF_ALIST (msg))
9072 if (!pedantic_errors && inhibit_warnings)
9075 fprintf (stderr, "%s:%d: ", file, line);
9076 if (pedantic_errors)
9078 if (!pedantic_errors)
9079 fprintf (stderr, "warning: ");
9080 VA_START (args, msg);
9081 vfprintf (stderr, msg, args);
9083 fprintf (stderr, "\n");
9086 /* Print the file names and line numbers of the #include
9087 directives which led to the current file. */
9090 print_containing_files ()
9092 FILE_BUF *ip = NULL;
9096 /* If stack of files hasn't changed since we last printed
9097 this info, don't repeat it. */
9098 if (last_error_tick == input_file_stack_tick)
9101 for (i = indepth; i >= 0; i--)
9102 if (instack[i].fname != NULL) {
9107 /* Give up if we don't find a source file. */
9111 /* Find the other, outer source files. */
9112 for (i--; i >= 0; i--)
9113 if (instack[i].fname != NULL) {
9117 fprintf (stderr, "In file included");
9119 fprintf (stderr, ",\n ");
9122 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
9125 fprintf (stderr, ":\n");
9127 /* Record we have printed the status as of this time. */
9128 last_error_tick = input_file_stack_tick;
9131 /* Return the line at which an error occurred.
9132 The error is not necessarily associated with the current spot
9133 in the input stack, so LINE says where. LINE will have been
9134 copied from ip->lineno for the current input level.
9135 If the current level is for a file, we return LINE.
9136 But if the current level is not for a file, LINE is meaningless.
9137 In that case, we return the lineno of the innermost file. */
9140 line_for_error (line)
9146 for (i = indepth; i >= 0; ) {
9147 if (instack[i].fname != 0)
9152 line1 = instack[i].lineno;
9160 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
9162 * As things stand, nothing is ever placed in the output buffer to be
9163 * removed again except when it's KNOWN to be part of an identifier,
9164 * so flushing and moving down everything left, instead of expanding,
9168 /* You might think void was cleaner for the return type,
9169 but that would get type mismatch in check_expand in strict ANSI. */
9171 grow_outbuf (obuf, needed)
9172 register FILE_BUF *obuf;
9173 register int needed;
9178 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
9181 /* Make it at least twice as big as it is now. */
9183 /* Make it have at least 150% of the free space we will need. */
9184 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
9185 if (minsize > obuf->length)
9186 obuf->length = minsize;
9188 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
9191 obuf->bufp = p + (obuf->bufp - obuf->buf);
9197 /* Symbol table for macro names and special symbols */
9200 * install a name in the main hash table, even if it is already there.
9201 * name stops with first non alphanumeric, except leading '#'.
9202 * caller must check against redefinition if that is desired.
9203 * delete_macro () removes things installed by install () in fifo order.
9204 * this is important because of the `defined' special symbol used
9205 * in #if, and also if pushdef/popdef directives are ever implemented.
9207 * If LEN is >= 0, it is the length of the name.
9208 * Otherwise, compute the length by scanning the entire name.
9210 * If HASH is >= 0, it is the precomputed hash code.
9211 * Otherwise, compute the hash code.
9214 install (name, len, type, value, hash)
9217 enum node_type type;
9221 register HASHNODE *hp;
9222 register int i, bucket;
9223 register U_CHAR *p, *q;
9227 while (is_idchar[*p])
9233 hash = hashf (name, len, HASHSIZE);
9235 i = sizeof (HASHNODE) + len + 1;
9236 hp = (HASHNODE *) xmalloc (i);
9238 hp->bucket_hdr = &hashtab[bucket];
9239 hp->next = hashtab[bucket];
9240 hashtab[bucket] = hp;
9242 if (hp->next != NULL)
9243 hp->next->prev = hp;
9246 hp->value.cpval = value;
9247 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
9250 for (i = 0; i < len; i++)
9257 * find the most recent hash node for name name (ending with first
9258 * non-identifier char) installed by install
9260 * If LEN is >= 0, it is the length of the name.
9261 * Otherwise, compute the length by scanning the entire name.
9263 * If HASH is >= 0, it is the precomputed hash code.
9264 * Otherwise, compute the hash code.
9267 lookup (name, len, hash)
9272 register U_CHAR *bp;
9273 register HASHNODE *bucket;
9276 for (bp = name; is_idchar[*bp]; bp++) ;
9281 hash = hashf (name, len, HASHSIZE);
9283 bucket = hashtab[hash];
9285 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
9287 bucket = bucket->next;
9293 * Delete a hash node. Some weirdness to free junk from macros.
9294 * More such weirdness will have to be added if you define more hash
9295 * types that need it.
9298 /* Note that the DEFINITION of a macro is removed from the hash table
9299 but its storage is not freed. This would be a storage leak
9300 except that it is not reasonable to keep undefining and redefining
9301 large numbers of macros many times.
9302 In any case, this is necessary, because a macro can be #undef'd
9303 in the middle of reading the arguments to a call to it.
9304 If #undef freed the DEFINITION, that would crash. */
9311 if (hp->prev != NULL)
9312 hp->prev->next = hp->next;
9313 if (hp->next != NULL)
9314 hp->next->prev = hp->prev;
9316 /* make sure that the bucket chain header that
9317 the deleted guy was on points to the right thing afterwards. */
9318 if (hp == *hp->bucket_hdr)
9319 *hp->bucket_hdr = hp->next;
9322 if (hp->type == T_MACRO) {
9323 DEFINITION *d = hp->value.defn;
9324 struct reflist *ap, *nextap;
9326 for (ap = d->pattern; ap != NULL; ap = nextap) {
9337 * return hash function on name. must be compatible with the one
9338 * computed a step at a time, elsewhere
9341 hashf (name, len, hashsize)
9342 register U_CHAR *name;
9349 r = HASHSTEP (r, *name++);
9351 return MAKE_POS (r) % hashsize;
9355 /* Dump the definition of a single macro HP to OF. */
9357 dump_single_macro (hp, of)
9358 register HASHNODE *hp;
9361 register DEFINITION *defn = hp->value.defn;
9367 /* Print the definition of the macro HP. */
9369 fprintf (of, "#define %s", hp->name);
9371 if (defn->nargs >= 0) {
9375 for (i = 0; i < defn->nargs; i++) {
9376 dump_arg_n (defn, i, of);
9377 if (i + 1 < defn->nargs)
9387 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9388 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9389 offset += ap->nchars;
9391 if (ap->nchars != 0)
9393 if (ap->stringify) {
9394 switch (ap->stringify) {
9395 case SHARP_TOKEN: fprintf (of, "#"); break;
9396 case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
9397 case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break;
9398 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break;
9402 if (ap->raw_before) {
9404 switch (ap->raw_before) {
9405 case WHITE_SHARP_TOKEN:
9406 case WHITE_PERCENT_COLON_TOKEN:
9413 switch (ap->raw_before) {
9414 case SHARP_TOKEN: fprintf (of, "##"); break;
9415 case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
9416 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9417 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break;
9424 dump_arg_n (defn, ap->argno, of);
9425 if (!traditional && ap->raw_after) {
9426 switch (ap->raw_after) {
9427 case SHARP_TOKEN: fprintf (of, "##"); break;
9428 case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
9429 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9430 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break;
9436 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9440 /* Dump all macro definitions as #defines to stdout. */
9447 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9448 register HASHNODE *hp;
9450 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9451 if (hp->type == T_MACRO)
9452 dump_single_macro (hp, stdout);
9457 /* Output to OF a substring of a macro definition.
9458 BASE is the beginning of the definition.
9459 Output characters START thru LENGTH.
9460 Unless traditional, discard newlines outside of strings, thus
9461 converting funny-space markers to ordinary spaces. */
9464 dump_defn_1 (base, start, length, of)
9470 U_CHAR *p = base + start;
9471 U_CHAR *limit = base + start + length;
9474 fwrite (p, sizeof (*p), length, of);
9477 if (*p == '\"' || *p =='\'') {
9478 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9479 NULL_PTR, NULL_PTR);
9480 fwrite (p, sizeof (*p), p1 - p, of);
9491 /* Print the name of argument number ARGNUM of macro definition DEFN
9493 Recall that DEFN->args.argnames contains all the arg names
9494 concatenated in reverse order with comma-space in between. */
9497 dump_arg_n (defn, argnum, of)
9502 register U_CHAR *p = defn->args.argnames;
9503 while (argnum + 1 < defn->nargs) {
9504 p = (U_CHAR *) index ((char *) p, ' ') + 1;
9508 while (*p && *p != ',') {
9514 /* Initialize syntactic classifications of characters. */
9517 initialize_char_syntax ()
9522 * Set up is_idchar and is_idstart tables. These should be
9523 * faster than saying (is_alpha (c) || c == '_'), etc.
9524 * Set up these things before calling any routines tthat
9527 for (i = 'a'; i <= 'z'; i++) {
9528 is_idchar[i - 'a' + 'A'] = 1;
9530 is_idstart[i - 'a' + 'A'] = 1;
9533 for (i = '0'; i <= '9'; i++)
9536 is_idstart['_'] = 1;
9537 is_idchar['$'] = dollars_in_ident;
9538 is_idstart['$'] = dollars_in_ident;
9540 /* horizontal space table */
9541 is_hor_space[' '] = 1;
9542 is_hor_space['\t'] = 1;
9543 is_hor_space['\v'] = 1;
9544 is_hor_space['\f'] = 1;
9545 is_hor_space['\r'] = 1;
9554 char_name['\v'] = "vertical tab";
9555 char_name['\f'] = "formfeed";
9556 char_name['\r'] = "carriage return";
9559 /* Initialize the built-in macros. */
9562 initialize_builtins (inp, outp)
9566 install ((U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
9567 install ((U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1);
9568 install ((U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1);
9569 install ((U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
9570 install ((U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
9571 install ((U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1);
9572 #ifndef NO_BUILTIN_SIZE_TYPE
9573 install ((U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
9575 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9576 install ((U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
9578 install ((U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
9579 install ((U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE,
9581 install ((U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE,
9583 install ((U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1);
9585 install ((U_CHAR *) "__STDC__", -1, T_CONST, "1", -1);
9586 install ((U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1);
9589 install ((U_CHAR *) "__OBJC__", -1, T_CONST, "1", -1);
9590 /* This is supplied using a -D by the compiler driver
9591 so that it is present only when truly compiling with GNU C. */
9592 /* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */
9596 char directive[2048];
9597 U_CHAR *udirective = (U_CHAR *) directive;
9598 register struct directive *dp = &directive_table[0];
9599 struct tm *timebuf = timestamp ();
9601 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9602 instack[0].nominal_fname);
9603 output_line_directive (inp, outp, 0, same_file);
9604 pass_thru_directive (udirective, &udirective[strlen (directive)],
9607 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9608 output_line_directive (inp, outp, 0, same_file);
9609 pass_thru_directive (udirective, &udirective[strlen (directive)],
9612 #ifndef NO_BUILTIN_SIZE_TYPE
9613 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9614 output_line_directive (inp, outp, 0, same_file);
9615 pass_thru_directive (udirective, &udirective[strlen (directive)],
9619 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9620 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9621 output_line_directive (inp, outp, 0, same_file);
9622 pass_thru_directive (udirective, &udirective[strlen (directive)],
9626 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9627 output_line_directive (inp, outp, 0, same_file);
9628 pass_thru_directive (udirective, &udirective[strlen (directive)],
9631 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9632 monthnames[timebuf->tm_mon],
9633 timebuf->tm_mday, timebuf->tm_year + 1900);
9634 output_line_directive (inp, outp, 0, same_file);
9635 pass_thru_directive (udirective, &udirective[strlen (directive)],
9638 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9639 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9640 output_line_directive (inp, outp, 0, same_file);
9641 pass_thru_directive (udirective, &udirective[strlen (directive)],
9646 sprintf (directive, " __STDC__ 1");
9647 output_line_directive (inp, outp, 0, same_file);
9648 pass_thru_directive (udirective, &udirective[strlen (directive)],
9653 sprintf (directive, " __OBJC__ 1");
9654 output_line_directive (inp, outp, 0, same_file);
9655 pass_thru_directive (udirective, &udirective[strlen (directive)],
9662 * process a given definition string, for initialization
9663 * If STR is just an identifier, define it with value 1.
9664 * If STR has anything after the identifier, then it should
9665 * be identifier=definition.
9669 make_definition (str, op)
9674 struct directive *kt;
9677 p = buf = (U_CHAR *) str;
9678 if (!is_idstart[*p]) {
9679 error ("malformed option `-D %s'", str);
9682 while (is_idchar[*++p])
9685 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9688 p = (U_CHAR *) str; /* Error */
9691 buf = (U_CHAR *) alloca (p - buf + 4);
9692 strcpy ((char *)buf, str);
9693 strcat ((char *)buf, " 1");
9694 } else if (*p != '=') {
9695 error ("malformed option `-D %s'", str);
9699 /* Copy the entire option so we can modify it. */
9700 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9701 strncpy ((char *) buf, str, p - (U_CHAR *) str);
9702 /* Change the = to a space. */
9703 buf[p - (U_CHAR *) str] = ' ';
9704 /* Scan for any backslash-newline and remove it. */
9706 q = &buf[p - (U_CHAR *) str];
9708 if (*p == '\"' || *p == '\'') {
9709 int unterminated = 0;
9710 U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0,
9711 NULL_PTR, NULL_PTR, &unterminated);
9715 if (*p == '\\' && p[1] == '\n')
9719 } else if (*p == '\\' && p[1] == '\n')
9721 /* Change newline chars into newline-markers. */
9722 else if (*p == '\n')
9734 ip = &instack[++indepth];
9735 ip->nominal_fname = ip->fname = "*Initialization*";
9737 ip->buf = ip->bufp = buf;
9738 ip->length = strlen ((char *) buf);
9742 ip->if_stack = if_stack;
9743 ip->system_header_p = 0;
9745 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9748 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9749 do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt);
9753 /* JF, this does the work for the -U option */
9756 make_undef (str, op)
9761 struct directive *kt;
9763 ip = &instack[++indepth];
9764 ip->nominal_fname = ip->fname = "*undef*";
9766 ip->buf = ip->bufp = (U_CHAR *) str;
9767 ip->length = strlen (str);
9771 ip->if_stack = if_stack;
9772 ip->system_header_p = 0;
9774 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9777 do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt);
9781 /* Process the string STR as if it appeared as the body of a #assert.
9782 OPTION is the option name for which STR was the argument. */
9785 make_assertion (option, str)
9790 struct directive *kt;
9791 U_CHAR *buf, *p, *q;
9793 /* Copy the entire option so we can modify it. */
9794 buf = (U_CHAR *) alloca (strlen (str) + 1);
9795 strcpy ((char *) buf, str);
9796 /* Scan for any backslash-newline and remove it. */
9799 if (*p == '\\' && p[1] == '\n')
9807 if (!is_idstart[*p]) {
9808 error ("malformed option `%s %s'", option, str);
9811 while (is_idchar[*++p])
9813 SKIP_WHITE_SPACE (p);
9814 if (! (*p == 0 || *p == '(')) {
9815 error ("malformed option `%s %s'", option, str);
9819 ip = &instack[++indepth];
9820 ip->nominal_fname = ip->fname = "*Initialization*";
9822 ip->buf = ip->bufp = buf;
9823 ip->length = strlen ((char *) buf);
9827 ip->if_stack = if_stack;
9828 ip->system_header_p = 0;
9830 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9833 /* pass NULL as output ptr to do_define since we KNOW it never
9834 does any output.... */
9835 do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt);
9839 /* Append a chain of `struct file_name_list's
9840 to the end of the main include chain.
9841 FIRST is the beginning of the chain to append, and LAST is the end. */
9844 append_include_chain (first, last)
9845 struct file_name_list *first, *last;
9847 struct file_name_list *dir;
9849 if (!first || !last)
9855 last_include->next = first;
9857 if (first_bracket_include == 0)
9858 first_bracket_include = first;
9860 for (dir = first; ; dir = dir->next) {
9861 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9862 if (len > max_include_len)
9863 max_include_len = len;
9869 last_include = last;
9872 /* Add output to `deps_buffer' for the -M switch.
9873 STRING points to the text to be output.
9874 SPACER is ':' for targets, ' ' for dependencies. */
9877 deps_output (string, spacer)
9881 int size = strlen (string);
9886 #ifndef MAX_OUTPUT_COLUMNS
9887 #define MAX_OUTPUT_COLUMNS 72
9889 if (MAX_OUTPUT_COLUMNS - 1 /*spacer*/ - 2 /*` \'*/ < deps_column + size
9890 && 1 < deps_column) {
9891 bcopy (" \\\n ", &deps_buffer[deps_size], 4);
9898 if (deps_size + size + 8 > deps_allocated_size) {
9899 deps_allocated_size = (deps_size + size + 50) * 2;
9900 deps_buffer = xrealloc (deps_buffer, deps_allocated_size);
9902 if (spacer == ' ') {
9903 deps_buffer[deps_size++] = ' ';
9906 bcopy (string, &deps_buffer[deps_size], size);
9908 deps_column += size;
9909 if (spacer == ':') {
9910 deps_buffer[deps_size++] = ':';
9913 deps_buffer[deps_size] = 0;
9917 fatal (PRINTF_ALIST (msg))
9922 fprintf (stderr, "%s: ", progname);
9923 VA_START (args, msg);
9924 vfprintf (stderr, msg, args);
9926 fprintf (stderr, "\n");
9927 exit (FAILURE_EXIT_CODE);
9930 /* More 'friendly' abort that prints the line and file.
9931 config.h can #define abort fancy_abort if you like that sort of thing. */
9936 fatal ("Internal gcc abort.");
9940 perror_with_name (name)
9943 fprintf (stderr, "%s: ", progname);
9944 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9949 pfatal_with_name (name)
9952 perror_with_name (name);
9956 exit (FAILURE_EXIT_CODE);
9960 /* Handler for SIGPIPE. */
9964 /* If this is missing, some compilers complain. */
9967 fatal ("output pipe has been closed");
9973 fatal ("Memory exhausted.");
9981 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (size);
9988 xrealloc (old, size)
9992 register GENERIC_PTR ptr = (GENERIC_PTR) realloc (old, size);
9999 xcalloc (number, size)
10000 size_t number, size;
10002 register size_t total = number * size;
10003 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (total);
10006 bzero (ptr, total);
10014 size_t size = strlen (input);
10015 char *output = xmalloc (size + 1);
10016 strcpy (output, input);
10020 /* Get the file-mode and data size of the file open on FD
10021 and store them in *MODE_POINTER and *SIZE_POINTER. */
10024 file_size_and_mode (fd, mode_pointer, size_pointer)
10027 long int *size_pointer;
10031 if (fstat (fd, &sbuf) < 0) return (-1);
10032 if (mode_pointer) *mode_pointer = sbuf.st_mode;
10033 if (size_pointer) *size_pointer = sbuf.st_size;
10038 output_dots (fd, depth)
10042 while (depth > 0) {
10051 /* Under VMS we need to fix up the "include" specification
10052 filename so that everything following the 1st slash is
10053 changed into its correct VMS file specification. */
10056 hack_vms_include_specification (fname)
10059 register char *cp, *cp1, *cp2;
10060 int f, check_filename_before_returning, no_prefix_seen;
10063 check_filename_before_returning = 0;
10064 no_prefix_seen = 0;
10066 /* Ignore leading "./"s */
10067 while (fname[0] == '.' && fname[1] == '/') {
10068 strcpy (fname, fname+2);
10069 no_prefix_seen = 1; /* mark this for later */
10071 /* Look for the boundary between the VMS and UNIX filespecs */
10072 cp = rindex (fname, ']'); /* Look for end of dirspec. */
10073 if (cp == 0) cp = rindex (fname, '>'); /* ... Ditto */
10074 if (cp == 0) cp = rindex (fname, ':'); /* Look for end of devspec. */
10078 cp = index (fname, '/'); /* Look for the "/" */
10082 * Check if we have a vax-c style '#include filename'
10083 * and add the missing .h
10086 if (index(fname,'.') == 0)
10087 strcat(fname, ".h");
10089 if (index(cp,'.') == 0)
10093 cp2 = Local; /* initialize */
10095 /* We are trying to do a number of things here. First of all, we are
10096 trying to hammer the filenames into a standard format, such that later
10097 processing can handle them.
10099 If the file name contains something like [dir.], then it recognizes this
10100 as a root, and strips the ".]". Later processing will add whatever is
10101 needed to get things working properly.
10103 If no device is specified, then the first directory name is taken to be
10104 a device name (or a rooted logical). */
10106 /* See if we found that 1st slash */
10107 if (cp == 0) return; /* Nothing to do!!! */
10108 if (*cp != '/') return; /* Nothing to do!!! */
10109 /* Point to the UNIX filename part (which needs to be fixed!) */
10111 /* If the directory spec is not rooted, we can just copy
10112 the UNIX filename part and we are done */
10113 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
10114 if (cp[-2] != '.') {
10116 * The VMS part ends in a `]', and the preceding character is not a `.'.
10117 * We strip the `]', and then splice the two parts of the name in the
10118 * usual way. Given the default locations for include files in cccp.c,
10119 * we will only use this code if the user specifies alternate locations
10120 * with the /include (-I) switch on the command line. */
10121 cp -= 1; /* Strip "]" */
10122 cp1--; /* backspace */
10125 * The VMS part has a ".]" at the end, and this will not do. Later
10126 * processing will add a second directory spec, and this would be a syntax
10127 * error. Thus we strip the ".]", and thus merge the directory specs.
10128 * We also backspace cp1, so that it points to a '/'. This inhibits the
10129 * generation of the 000000 root directory spec (which does not belong here
10132 cp -= 2; /* Strip ".]" */
10133 cp1--; }; /* backspace */
10136 /* We drop in here if there is no VMS style directory specification yet.
10137 * If there is no device specification either, we make the first dir a
10138 * device and try that. If we do not do this, then we will be essentially
10139 * searching the users default directory (as if they did a #include "asdf.h").
10141 * Then all we need to do is to push a '[' into the output string. Later
10142 * processing will fill this in, and close the bracket.
10144 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
10145 *cp2++ = '['; /* Open the directory specification */
10148 /* at this point we assume that we have the device spec, and (at least
10149 the opening "[" for a directory specification. We may have directories
10150 specified already */
10152 /* If there are no other slashes then the filename will be
10153 in the "root" directory. Otherwise, we need to add
10154 directory specifications. */
10155 if (index (cp1, '/') == 0) {
10156 /* Just add "000000]" as the directory string */
10157 strcpy (cp2, "000000]");
10158 cp2 += strlen (cp2);
10159 check_filename_before_returning = 1; /* we might need to fool with this later */
10161 /* As long as there are still subdirectories to add, do them. */
10162 while (index (cp1, '/') != 0) {
10163 /* If this token is "." we can ignore it */
10164 if ((cp1[0] == '.') && (cp1[1] == '/')) {
10168 /* Add a subdirectory spec. Do not duplicate "." */
10169 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
10171 /* If this is ".." then the spec becomes "-" */
10172 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
10173 /* Add "-" and skip the ".." */
10178 /* Copy the subdirectory */
10179 while (*cp1 != '/') *cp2++= *cp1++;
10180 cp1++; /* Skip the "/" */
10182 /* Close the directory specification */
10183 if (cp2[-1] == '.') /* no trailing periods */
10187 /* Now add the filename */
10188 while (*cp1) *cp2++ = *cp1++;
10190 /* Now append it to the original VMS spec. */
10191 strcpy (cp, Local);
10193 /* If we put a [000000] in the filename, try to open it first. If this fails,
10194 remove the [000000], and return that name. This provides flexibility
10195 to the user in that they can use both rooted and non-rooted logical names
10196 to point to the location of the file. */
10198 if (check_filename_before_returning && no_prefix_seen) {
10199 f = open (fname, O_RDONLY, 0666);
10201 /* The file name is OK as it is, so return it as is. */
10205 /* The filename did not work. Try to remove the [000000] from the name,
10207 cp = index (fname, '[');
10208 cp2 = index (fname, ']') + 1;
10209 strcpy (cp, cp2); /* this gets rid of it */
10217 /* These are the read/write replacement routines for
10218 VAX-11 "C". They make read/write behave enough
10219 like their UNIX counterparts that CCCP will work */
10222 read (fd, buf, size)
10227 #undef read /* Get back the REAL read routine */
10229 register int total = 0;
10231 /* Read until the buffer is exhausted */
10233 /* Limit each read to 32KB */
10234 i = (size > (32*1024)) ? (32*1024) : size;
10235 i = read (fd, buf, i);
10237 if (i == 0) return (total);
10240 /* Account for this read */
10249 write (fd, buf, size)
10254 #undef write /* Get back the REAL write routine */
10258 /* Limit individual writes to 32Kb */
10261 j = (i > (32*1024)) ? (32*1024) : i;
10262 if (write (fd, buf, j) < 0) return (-1);
10263 /* Account for the data written */
10270 /* The following wrapper functions supply additional arguments to the VMS
10271 I/O routines to optimize performance with file handling. The arguments
10273 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
10274 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
10275 "fop=tef"- Truncate unused portions of file when closing file.
10276 "shr=nil"- Disallow file sharing while file is open.
10280 freopen (fname, type, oldfile)
10285 #undef freopen /* Get back the REAL fopen routine */
10286 if (strcmp (type, "w") == 0)
10287 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
10288 return freopen (fname, type, oldfile, "mbc=16");
10292 fopen (fname, type)
10296 #undef fopen /* Get back the REAL fopen routine */
10297 /* The gcc-vms-1.42 distribution's header files prototype fopen with two
10298 fixed arguments, which matches ANSI's specification but not VAXCRTL's
10299 pre-ANSI implmentation. This hack circumvents the mismatch problem. */
10300 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
10303 return (*vmslib_fopen) (fname, type, "mbc=32",
10304 "deq=64", "fop=tef", "shr=nil");
10306 return (*vmslib_fopen) (fname, type, "mbc=32");
10310 open (fname, flags, prot)
10315 #undef open /* Get back the REAL open routine */
10316 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
10319 /* Avoid run-time library bug, where copying M out of N+M characters with
10320 N >= 65535 results in VAXCRTL's strncat falling into an infinite loop.
10321 gcc-cpp exercises this particular bug. [Fixed in V5.5-2's VAXCRTL.] */
10324 strncat (dst, src, cnt)
10329 register char *d = dst, *s = (char *) src;
10330 register int n = cnt; /* convert to _signed_ type */
10332 while (*d) d++; /* advance to end */
10334 if (!(*d++ = *s++)) break;
10335 if (n < 0) *d = '\0';
10339 /* more VMS hackery */
10343 extern unsigned long sys$parse(), sys$search();
10345 /* Work around another library bug. If a file is located via a searchlist,
10346 and if the device it's on is not the same device as the one specified
10347 in the first element of that searchlist, then both stat() and fstat()
10348 will fail to return info about it. `errno' will be set to EVMSERR, and
10349 `vaxc$errno' will be set to SS$_NORMAL due yet another bug in stat()!
10350 We can get around this by fully parsing the filename and then passing
10351 that absolute name to stat().
10353 Without this fix, we can end up failing to find header files, which is
10354 bad enough, but then compounding the problem by reporting the reason for
10355 failure as "normal successful completion." */
10358 fstat (fd, statbuf)
10360 struct stat *statbuf;
10363 int result = fstat (fd, statbuf);
10368 char nambuf[NAM$C_MAXRSS+1];
10370 if ((fp = fdopen (fd, "r")) != 0 && fgetname (fp, nambuf) != 0)
10371 result = stat (nambuf, statbuf);
10372 /* No fclose(fp) here; that would close(fd) as well. */
10379 stat (name, statbuf)
10381 struct stat *statbuf;
10384 int result = stat (name, statbuf);
10390 char exp_nam[NAM$C_MAXRSS+1], /* expanded name buffer for sys$parse */
10391 res_nam[NAM$C_MAXRSS+1]; /* resultant name buffer for sys$search */
10394 fab.fab$l_fna = (char *) name;
10395 fab.fab$b_fns = (unsigned char) strlen (name);
10396 fab.fab$l_nam = (void *) &nam;
10398 nam.nam$l_esa = exp_nam, nam.nam$b_ess = sizeof exp_nam - 1;
10399 nam.nam$l_rsa = res_nam, nam.nam$b_rss = sizeof res_nam - 1;
10400 nam.nam$b_nop = NAM$M_PWD | NAM$M_NOCONCEAL;
10401 if (sys$parse (&fab) & 1)
10403 if (sys$search (&fab) & 1)
10405 res_nam[nam.nam$b_rsl] = '\0';
10406 result = stat (res_nam, statbuf);
10408 /* Clean up searchlist context cached by the system. */
10409 nam.nam$b_nop = NAM$M_SYNCHK;
10410 fab.fab$l_fna = 0, fab.fab$b_fns = 0;
10411 (void) sys$parse (&fab);
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