1 /* C Compatible Compiler Preprocessor (CCCP)
2 Copyright (C) 1986, 87, 89, 92-95, 1996 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, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
21 In other words, you are welcome to use, share and improve this program.
22 You are forbidden to forbid anyone else to use, share and improve
23 what you give them. Help stamp out software-hoarding! */
25 typedef unsigned char U_CHAR;
29 #include "../src/config.h"
37 /* The macro EMACS is defined when cpp is distributed as part of Emacs,
38 for the sake of machines with limited C compilers. */
41 #endif /* not EMACS */
43 #ifndef STANDARD_INCLUDE_DIR
44 #define STANDARD_INCLUDE_DIR "/usr/include"
47 #ifndef LOCAL_INCLUDE_DIR
48 #define LOCAL_INCLUDE_DIR "/usr/local/include"
53 /* By default, colon separates directories in a path. */
54 #ifndef PATH_SEPARATOR
55 #define PATH_SEPARATOR ':'
58 #include <sys/types.h>
64 /* The following symbols should be autoconfigured:
71 In the mean time, we'll get by with approximations based
72 on existing GCC configuration symbols. */
75 # ifndef HAVE_STDLIB_H
76 # define HAVE_STDLIB_H 1
78 # ifndef HAVE_UNISTD_H
79 # define HAVE_UNISTD_H 1
82 # define STDC_HEADERS 1
84 #endif /* defined (POSIX) */
86 #if defined (POSIX) || (defined (USG) && !defined (VMS))
88 # define HAVE_FCNTL_H 1
95 # if TIME_WITH_SYS_TIME
96 # include <sys/time.h>
100 # include <sys/time.h>
105 # include <sys/resource.h>
123 # define bcmp(a, b, n) memcmp (a, b, n)
126 # define bcopy(s, d, n) memcpy (d, s, n)
129 # define bzero(d, n) memset (d, 0, n)
131 #else /* !STDC_HEADERS */
135 # if !defined (BSTRING) && (defined (USG) || defined (VMS))
138 # define bcmp my_bcmp
151 # endif /* !defined (bcmp) */
154 # define bcopy my_bcopy
164 # endif /* !defined (bcopy) */
167 # define bzero my_bzero
171 register unsigned length;
176 # endif /* !defined (bzero) */
178 # endif /* !defined (BSTRING) && (defined (USG) || defined (VMS)) */
179 #endif /* ! STDC_HEADERS */
181 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
182 # define __attribute__(x)
186 # if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
187 # define PROTO(ARGS) ARGS
189 # define PROTO(ARGS) ()
193 #if defined (__STDC__) && defined (HAVE_VPRINTF)
195 # define VA_START(va_list, var) va_start (va_list, var)
196 # define PRINTF_ALIST(msg) char *msg, ...
197 # define PRINTF_DCL(msg)
198 # define PRINTF_PROTO(ARGS, m, n) PROTO (ARGS) __attribute__ ((format (printf, m, n)))
200 # include <varargs.h>
201 # define VA_START(va_list, var) va_start (va_list)
202 # define PRINTF_ALIST(msg) msg, va_alist
203 # define PRINTF_DCL(msg) char *msg; va_dcl
204 # define PRINTF_PROTO(ARGS, m, n) () __attribute__ ((format (printf, m, n)))
205 # define vfprintf(file, msg, args) \
207 char *a0 = va_arg(args, char *); \
208 char *a1 = va_arg(args, char *); \
209 char *a2 = va_arg(args, char *); \
210 char *a3 = va_arg(args, char *); \
211 fprintf (file, msg, a0, a1, a2, a3); \
215 #define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2)
216 #define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3)
217 #define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4)
223 /* VMS-specific definitions */
226 #define O_RDONLY 0 /* Open arg for Read/Only */
227 #define O_WRONLY 1 /* Open arg for Write/Only */
228 #define read(fd,buf,size) VMS_read (fd,buf,size)
229 #define write(fd,buf,size) VMS_write (fd,buf,size)
230 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
231 #define fopen(fname,mode) VMS_fopen (fname,mode)
232 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
233 #define fstat(fd,stbuf) VMS_fstat (fd,stbuf)
234 static int VMS_fstat (), VMS_stat ();
235 static int VMS_read ();
236 static int VMS_write ();
237 static int VMS_open ();
238 static FILE * VMS_fopen ();
239 static FILE * VMS_freopen ();
240 static void hack_vms_include_specification ();
241 #define INO_T_EQ(a, b) (!bcmp((char *) &(a), (char *) &(b), sizeof (a)))
242 #define INO_T_HASH(a) 0
243 #define INCLUDE_LEN_FUDGE 12 /* leave room for VMS syntax conversion */
245 #define BSTRING /* VMS/GCC supplies the bstring routines */
246 #endif /* __GNUC__ */
255 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
256 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
258 /* Find the largest host integer type and set its size and type.
259 Don't blindly use `long'; on some crazy hosts it is shorter than `int'. */
261 #ifndef HOST_BITS_PER_WIDE_INT
263 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
264 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
265 #define HOST_WIDE_INT long
267 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
268 #define HOST_WIDE_INT int
274 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
278 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
282 #define INO_T_EQ(a, b) ((a) == (b))
286 #define INO_T_HASH(a) (a)
289 /* Define a generic NULL if one hasn't already been defined. */
296 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
297 #define GENERIC_PTR void *
299 #define GENERIC_PTR char *
304 #define NULL_PTR ((GENERIC_PTR) 0)
307 #ifndef INCLUDE_LEN_FUDGE
308 #define INCLUDE_LEN_FUDGE 0
311 /* External declarations. */
313 extern char *version_string;
315 #ifndef HAVE_STRERROR
318 extern const char *const sys_errlist[];
320 extern char *sys_errlist[];
322 #else /* HAVE_STRERROR */
326 char *strerror (int,...);
328 HOST_WIDE_INT parse_escape PROTO((char **, HOST_WIDE_INT));
329 HOST_WIDE_INT parse_c_expression PROTO((char *));
335 /* Name under which this program was invoked. */
337 static char *progname;
339 /* Nonzero means use extra default include directories for C++. */
341 static int cplusplus;
343 /* Nonzero means handle cplusplus style comments */
345 static int cplusplus_comments;
347 /* Nonzero means handle #import, for objective C. */
351 /* Nonzero means this is an assembly file, and allow
352 unknown directives, which could be comments. */
356 /* Current maximum length of directory names in the search path
357 for include files. (Altered as we get more of them.) */
359 static int max_include_len;
361 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
363 static int for_lint = 0;
365 /* Nonzero means copy comments into the output file. */
367 static int put_out_comments = 0;
369 /* Nonzero means don't process the ANSI trigraph sequences. */
371 static int no_trigraphs = 0;
373 /* Nonzero means print the names of included files rather than
374 the preprocessed output. 1 means just the #include "...",
375 2 means #include <...> as well. */
377 static int print_deps = 0;
379 /* Nonzero if missing .h files in -M output are assumed to be generated
380 files and not errors. */
382 static int print_deps_missing_files = 0;
384 /* Nonzero means print names of header files (-H). */
386 static int print_include_names = 0;
388 /* Nonzero means don't output line number information. */
390 static int no_line_directives;
392 /* Nonzero means output the text in failing conditionals,
393 inside #failed ... #endfailed. */
395 static int output_conditionals;
397 /* dump_only means inhibit output of the preprocessed text
398 and instead output the definitions of all user-defined
399 macros in a form suitable for use as input to cccp.
400 dump_names means pass #define and the macro name through to output.
401 dump_definitions means pass the whole definition (plus #define) through
404 static enum {dump_none, dump_only, dump_names, dump_definitions}
405 dump_macros = dump_none;
407 /* Nonzero means pass all #define and #undef directives which we actually
408 process through to the output stream. This feature is used primarily
409 to allow cc1 to record the #defines and #undefs for the sake of
410 debuggers which understand about preprocessor macros, but it may
411 also be useful with -E to figure out how symbols are defined, and
412 where they are defined. */
413 static int debug_output = 0;
415 /* Nonzero indicates special processing used by the pcp program. The
416 special effects of this mode are:
418 Inhibit all macro expansion, except those inside #if directives.
420 Process #define directives normally, and output their contents
423 Output preconditions to pcp_outfile indicating all the relevant
424 preconditions for use of this file in a later cpp run.
426 static FILE *pcp_outfile;
428 /* Nonzero means we are inside an IF during a -pcp run. In this mode
429 macro expansion is done, and preconditions are output for all macro
430 uses requiring them. */
431 static int pcp_inside_if;
433 /* Nonzero means never to include precompiled files.
434 This is 1 since there's no way now to make precompiled files,
435 so it's not worth testing for them. */
436 static int no_precomp = 1;
438 /* Nonzero means give all the error messages the ANSI standard requires. */
442 /* Nonzero means try to make failure to fit ANSI C an error. */
444 static int pedantic_errors;
446 /* Nonzero means don't print warning messages. -w. */
448 static int inhibit_warnings = 0;
450 /* Nonzero means warn if slash-star appears in a slash-star comment,
451 or if newline-backslash appears in a slash-slash comment. */
453 static int warn_comments;
455 /* Nonzero means warn if a macro argument is (or would be)
456 stringified with -traditional. */
458 static int warn_stringify;
460 /* Nonzero means warn if there are any trigraphs. */
462 static int warn_trigraphs;
464 /* Nonzero means warn if #import is used. */
466 static int warn_import = 1;
468 /* Nonzero means turn warnings into errors. */
470 static int warnings_are_errors;
472 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
476 /* Nonzero causes output not to be done,
477 but directives such as #define that have side effects
480 static int no_output;
482 /* Nonzero means this file was included with a -imacros or -include
483 command line and should not be recorded as an include file. */
485 static int no_record_file;
487 /* Nonzero means that we have finished processing the command line options.
488 This flag is used to decide whether or not to issue certain errors
491 static int done_initializing = 0;
493 /* Line where a newline was first seen in a string constant. */
495 static int multiline_string_line = 0;
497 /* I/O buffer structure.
498 The `fname' field is nonzero for source files and #include files
499 and for the dummy text used for -D and -U.
500 It is zero for rescanning results of macro expansion
501 and for expanding macro arguments. */
502 #define INPUT_STACK_MAX 400
503 static struct file_buf {
505 /* Filename specified with #line directive. */
507 /* Include file description. */
508 struct include_file *inc;
509 /* Record where in the search path this file was found.
510 For #include_next. */
511 struct file_name_list *dir;
516 /* Macro that this level is the expansion of.
517 Included so that we can reenable the macro
518 at the end of this level. */
519 struct hashnode *macro;
520 /* Value of if_stack at start of this file.
521 Used to prohibit unmatched #endif (etc) in an include file. */
522 struct if_stack *if_stack;
523 /* Object to be freed at end of input at this level. */
525 /* True if this is a header file included using <FILENAME>. */
526 char system_header_p;
527 } instack[INPUT_STACK_MAX];
529 static int last_error_tick; /* Incremented each time we print it. */
530 static int input_file_stack_tick; /* Incremented when the status changes. */
532 /* Current nesting level of input sources.
533 `instack[indepth]' is the level currently being read. */
534 static int indepth = -1;
535 #define CHECK_DEPTH(code) \
536 if (indepth >= (INPUT_STACK_MAX - 1)) \
538 error_with_line (line_for_error (instack[indepth].lineno), \
539 "macro or `#include' recursion too deep"); \
543 /* Current depth in #include directives that use <...>. */
544 static int system_include_depth = 0;
546 typedef struct file_buf FILE_BUF;
548 /* The output buffer. Its LENGTH field is the amount of room allocated
549 for the buffer, not the number of chars actually present. To get
550 that, subtract outbuf.buf from outbuf.bufp. */
552 #define OUTBUF_SIZE 10 /* initial size of output buffer */
553 static FILE_BUF outbuf;
555 /* Grow output buffer OBUF points at
556 so it can hold at least NEEDED more chars. */
558 #define check_expand(OBUF, NEEDED) \
559 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
560 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
562 struct file_name_list
564 struct file_name_list *next;
565 /* If the following is 1, it is a C-language system include
567 int c_system_include_path;
568 /* Mapping of file names for this directory. */
569 struct file_name_map *name_map;
570 /* Non-zero if name_map is valid. */
572 /* The include directory status. */
574 /* The include prefix: "" denotes the working directory,
575 otherwise fname must end in '/'.
576 The actual size is dynamically allocated. */
580 /* #include "file" looks in source file dir, then stack. */
581 /* #include <file> just looks in the stack. */
582 /* -I directories are added to the end, then the defaults are added. */
584 static struct default_include {
585 char *fname; /* The name of the directory. */
586 int cplusplus; /* Only look here if we're compiling C++. */
587 int cxx_aware; /* Includes in this directory don't need to
588 be wrapped in extern "C" when compiling
590 } include_defaults_array[]
591 #ifdef INCLUDE_DEFAULTS
595 /* Pick up GNU C++ specific include files. */
596 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
597 { OLD_GPLUSPLUS_INCLUDE_DIR, 1, 1 },
599 /* This is the dir for fixincludes. Put it just before
600 the files that we fix. */
601 { GCC_INCLUDE_DIR, 0, 0 },
602 /* For cross-compilation, this dir name is generated
603 automatically in Makefile.in. */
604 { CROSS_INCLUDE_DIR, 0, 0 },
605 /* This is another place that the target system's headers might be. */
606 { TOOL_INCLUDE_DIR, 0, 0 },
607 #else /* not CROSS_COMPILE */
608 /* This should be /usr/local/include and should come before
609 the fixincludes-fixed header files. */
610 { LOCAL_INCLUDE_DIR, 0, 1 },
611 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
612 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
613 { TOOL_INCLUDE_DIR, 0, 0 },
614 /* This is the dir for fixincludes. Put it just before
615 the files that we fix. */
616 { GCC_INCLUDE_DIR, 0, 0 },
617 /* Some systems have an extra dir of include files. */
618 #ifdef SYSTEM_INCLUDE_DIR
619 { SYSTEM_INCLUDE_DIR, 0, 0 },
621 { STANDARD_INCLUDE_DIR, 0, 0 },
622 #endif /* not CROSS_COMPILE */
625 #endif /* no INCLUDE_DEFAULTS */
627 /* The code looks at the defaults through this pointer, rather than through
628 the constant structure above. This pointer gets changed if an environment
629 variable specifies other defaults. */
630 static struct default_include *include_defaults = include_defaults_array;
632 static struct file_name_list *include = 0; /* First dir to search */
633 /* First dir to search for <file> */
634 /* This is the first element to use for #include <...>.
635 If it is 0, use the entire chain for such includes. */
636 static struct file_name_list *first_bracket_include = 0;
637 /* This is the first element in the chain that corresponds to
638 a directory of system header files. */
639 static struct file_name_list *first_system_include = 0;
640 static struct file_name_list *last_include = 0; /* Last in chain */
642 /* Chain of include directories to put at the end of the other chain. */
643 static struct file_name_list *after_include = 0;
644 static struct file_name_list *last_after_include = 0; /* Last in chain */
646 /* Chain to put at the start of the system include files. */
647 static struct file_name_list *before_system = 0;
648 static struct file_name_list *last_before_system = 0; /* Last in chain */
650 /* Directory prefix that should replace `/usr' in the standard
651 include file directories. */
652 static char *include_prefix;
654 /* Maintain and search list of included files. */
656 struct include_file {
657 struct include_file *next; /* for include_hashtab */
658 struct include_file *next_ino; /* for include_ino_hashtab */
660 /* If the following is the empty string, it means #pragma once
661 was seen in this include file, or #import was applied to the file.
662 Otherwise, if it is nonzero, it is a macro name.
663 Don't include the file again if that macro is defined. */
664 U_CHAR *control_macro;
665 /* Nonzero if the dependency on this include file has been output. */
670 /* Hash tables of files already included with #include or #import.
671 include_hashtab is by full name; include_ino_hashtab is by inode number. */
673 #define INCLUDE_HASHSIZE 61
674 static struct include_file *include_hashtab[INCLUDE_HASHSIZE];
675 static struct include_file *include_ino_hashtab[INCLUDE_HASHSIZE];
677 /* Global list of strings read in from precompiled files. This list
678 is kept in the order the strings are read in, with new strings being
679 added at the end through stringlist_tailp. We use this list to output
680 the strings at the end of the run.
682 static STRINGDEF *stringlist;
683 static STRINGDEF **stringlist_tailp = &stringlist;
686 /* Structure returned by create_definition */
687 typedef struct macrodef MACRODEF;
690 struct definition *defn;
695 enum sharp_token_type {
696 NO_SHARP_TOKEN = 0, /* token not present */
698 SHARP_TOKEN = '#', /* token spelled with # only */
699 WHITE_SHARP_TOKEN, /* token spelled with # and white space */
701 PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
702 WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
705 /* Structure allocated for every #define. For a simple replacement
708 nargs = -1, the `pattern' list is null, and the expansion is just
709 the replacement text. Nargs = 0 means a functionlike macro with no args,
711 #define getchar() getc (stdin) .
712 When there are args, the expansion is the replacement text with the
713 args squashed out, and the reflist is a list describing how to
714 build the output from the input: e.g., "3 chars, then the 1st arg,
715 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
716 The chars here come from the expansion. Whatever is left of the
717 expansion after the last arg-occurrence is copied after that arg.
718 Note that the reflist can be arbitrarily long---
719 its length depends on the number of times the arguments appear in
720 the replacement text, not how many args there are. Example:
721 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
723 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
724 where (x, y) means (nchars, argno). */
726 typedef struct definition DEFINITION;
729 int length; /* length of expansion string */
730 int predefined; /* True if the macro was builtin or */
731 /* came from the command line */
733 int line; /* Line number of definition */
734 char *file; /* File of definition */
735 char rest_args; /* Nonzero if last arg. absorbs the rest */
737 struct reflist *next;
739 enum sharp_token_type stringify; /* set if a # operator before arg */
740 enum sharp_token_type raw_before; /* set if a ## operator before arg */
741 enum sharp_token_type raw_after; /* set if a ## operator after arg */
743 char rest_args; /* Nonzero if this arg. absorbs the rest */
744 int nchars; /* Number of literal chars to copy before
745 this arg occurrence. */
746 int argno; /* Number of arg to substitute (origin-0) */
749 /* Names of macro args, concatenated in reverse order
750 with comma-space between them.
751 The only use of this is that we warn on redefinition
752 if this differs between the old and new definitions. */
757 /* different kinds of things that can appear in the value field
758 of a hash node. Actually, this may be useless now. */
766 * special extension string that can be added to the last macro argument to
767 * allow it to absorb the "rest" of the arguments when expanded. Ex:
768 * #define wow(a, b...) process (b, a, b)
769 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
770 * { wow (one, two); } -> { process (two, one, two); }
771 * if this "rest_arg" is used with the concat token '##' and if it is not
772 * supplied then the token attached to with ## will not be outputted. Ex:
773 * #define wow (a, b...) process (b ## , a, ## b)
774 * { wow (1, 2); } -> { process (2, 1, 2); }
775 * { wow (one); } -> { process (one); {
777 static char rest_extension[] = "...";
778 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
780 /* The structure of a node in the hash table. The hash table
781 has entries for all tokens defined by #define directives (type T_MACRO),
782 plus some special tokens like __LINE__ (these each have their own
783 type, and the appropriate code is run when that type of node is seen.
784 It does not contain control words like "#define", which are recognized
785 by a separate piece of code. */
787 /* different flavors of hash nodes --- also used in keyword table */
789 T_DEFINE = 1, /* the `#define' keyword */
790 T_INCLUDE, /* the `#include' keyword */
791 T_INCLUDE_NEXT, /* the `#include_next' keyword */
792 T_IMPORT, /* the `#import' keyword */
793 T_IFDEF, /* the `#ifdef' keyword */
794 T_IFNDEF, /* the `#ifndef' keyword */
795 T_IF, /* the `#if' keyword */
796 T_ELSE, /* `#else' */
797 T_PRAGMA, /* `#pragma' */
798 T_ELIF, /* `#elif' */
799 T_UNDEF, /* `#undef' */
800 T_LINE, /* `#line' */
801 T_ERROR, /* `#error' */
802 T_WARNING, /* `#warning' */
803 T_ENDIF, /* `#endif' */
804 T_SCCS, /* `#sccs', used on system V. */
805 T_IDENT, /* `#ident', used on system V. */
806 T_ASSERT, /* `#assert', taken from system V. */
807 T_UNASSERT, /* `#unassert', taken from system V. */
808 T_SPECLINE, /* special symbol `__LINE__' */
809 T_DATE, /* `__DATE__' */
810 T_FILE, /* `__FILE__' */
811 T_BASE_FILE, /* `__BASE_FILE__' */
812 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
813 T_VERSION, /* `__VERSION__' */
814 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
815 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
816 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
817 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
818 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
819 T_IMMEDIATE_PREFIX_TYPE, /* `__IMMEDIATE_PREFIX__' */
820 T_TIME, /* `__TIME__' */
821 T_CONST, /* Constant value, used by `__STDC__' */
822 T_MACRO, /* macro defined by `#define' */
823 T_DISABLED, /* macro temporarily turned off for rescan */
824 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
825 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
826 T_UNUSED /* Used for something not defined. */
830 struct hashnode *next; /* double links for easy deletion */
831 struct hashnode *prev;
832 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
833 chain is kept, in case the node is the head
834 of the chain and gets deleted. */
835 enum node_type type; /* type of special token */
836 int length; /* length of token, for quick comparison */
837 U_CHAR *name; /* the actual name */
838 union hashval value; /* pointer to expansion, or whatever */
841 typedef struct hashnode HASHNODE;
843 /* Some definitions for the hash table. The hash function MUST be
844 computed as shown in hashf () below. That is because the rescan
845 loop computes the hash value `on the fly' for most tokens,
846 in order to avoid the overhead of a lot of procedure calls to
847 the hashf () function. Hashf () only exists for the sake of
848 politeness, for use when speed isn't so important. */
850 #define HASHSIZE 1403
851 static HASHNODE *hashtab[HASHSIZE];
852 #define HASHSTEP(old, c) ((old << 2) + c)
853 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
855 /* Symbols to predefine. */
857 #ifdef CPP_PREDEFINES
858 static char *predefs = CPP_PREDEFINES;
860 static char *predefs = "";
863 /* We let tm.h override the types used here, to handle trivial differences
864 such as the choice of unsigned int or long unsigned int for size_t.
865 When machines start needing nontrivial differences in the size type,
866 it would be best to do something here to figure out automatically
867 from other information what type to use. */
869 /* The string value for __SIZE_TYPE__. */
872 #define SIZE_TYPE "long unsigned int"
875 /* The string value for __PTRDIFF_TYPE__. */
878 #define PTRDIFF_TYPE "long int"
881 /* The string value for __WCHAR_TYPE__. */
884 #define WCHAR_TYPE "int"
886 char * wchar_type = WCHAR_TYPE;
889 /* The string value for __USER_LABEL_PREFIX__ */
891 #ifndef USER_LABEL_PREFIX
892 #define USER_LABEL_PREFIX ""
895 /* The string value for __REGISTER_PREFIX__ */
897 #ifndef REGISTER_PREFIX
898 #define REGISTER_PREFIX ""
901 /* The string value for __IMMEDIATE_PREFIX__ */
903 #ifndef IMMEDIATE_PREFIX
904 #define IMMEDIATE_PREFIX ""
907 /* In the definition of a #assert name, this structure forms
908 a list of the individual values asserted.
909 Each value is itself a list of "tokens".
910 These are strings that are compared by name. */
912 struct tokenlist_list {
913 struct tokenlist_list *next;
914 struct arglist *tokens;
917 struct assertion_hashnode {
918 struct assertion_hashnode *next; /* double links for easy deletion */
919 struct assertion_hashnode *prev;
920 /* also, a back pointer to this node's hash
921 chain is kept, in case the node is the head
922 of the chain and gets deleted. */
923 struct assertion_hashnode **bucket_hdr;
924 int length; /* length of token, for quick comparison */
925 U_CHAR *name; /* the actual name */
926 /* List of token-sequences. */
927 struct tokenlist_list *value;
930 typedef struct assertion_hashnode ASSERTION_HASHNODE;
932 /* Some definitions for the hash table. The hash function MUST be
933 computed as shown in hashf below. That is because the rescan
934 loop computes the hash value `on the fly' for most tokens,
935 in order to avoid the overhead of a lot of procedure calls to
936 the hashf function. hashf only exists for the sake of
937 politeness, for use when speed isn't so important. */
939 #define ASSERTION_HASHSIZE 37
940 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
942 /* Nonzero means inhibit macroexpansion of what seem to be
943 assertion tests, in rescan. For #if. */
944 static int assertions_flag;
946 /* `struct directive' defines one #-directive, including how to handle it. */
948 #define DO_PROTO PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *))
951 int length; /* Length of name */
952 int (*func) DO_PROTO; /* Function to handle directive */
953 char *name; /* Name of directive */
954 enum node_type type; /* Code which describes which directive. */
955 char angle_brackets; /* Nonzero => <...> is special. */
956 char traditional_comments; /* Nonzero: keep comments if -traditional. */
957 char pass_thru; /* Copy preprocessed directive to output file. */
960 /* These functions are declared to return int instead of void since they
961 are going to be placed in the table and some old compilers have trouble with
962 pointers to functions returning void. */
964 static int do_assert DO_PROTO;
965 static int do_define DO_PROTO;
966 static int do_elif DO_PROTO;
967 static int do_else DO_PROTO;
968 static int do_endif DO_PROTO;
969 static int do_error DO_PROTO;
970 static int do_ident DO_PROTO;
971 static int do_if DO_PROTO;
972 static int do_include DO_PROTO;
973 static int do_line DO_PROTO;
974 static int do_pragma DO_PROTO;
975 #ifdef SCCS_DIRECTIVE
976 static int do_sccs DO_PROTO;
978 static int do_unassert DO_PROTO;
979 static int do_undef DO_PROTO;
980 static int do_warning DO_PROTO;
981 static int do_xifdef DO_PROTO;
983 /* Here is the actual list of #-directives, most-often-used first. */
985 static struct directive directive_table[] = {
986 { 6, do_define, "define", T_DEFINE, 0, 1},
987 { 2, do_if, "if", T_IF},
988 { 5, do_xifdef, "ifdef", T_IFDEF},
989 { 6, do_xifdef, "ifndef", T_IFNDEF},
990 { 5, do_endif, "endif", T_ENDIF},
991 { 4, do_else, "else", T_ELSE},
992 { 4, do_elif, "elif", T_ELIF},
993 { 4, do_line, "line", T_LINE},
994 { 7, do_include, "include", T_INCLUDE, 1},
995 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
996 { 6, do_include, "import", T_IMPORT, 1},
997 { 5, do_undef, "undef", T_UNDEF},
998 { 5, do_error, "error", T_ERROR},
999 { 7, do_warning, "warning", T_WARNING},
1000 #ifdef SCCS_DIRECTIVE
1001 { 4, do_sccs, "sccs", T_SCCS},
1003 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
1004 { 5, do_ident, "ident", T_IDENT},
1005 { 6, do_assert, "assert", T_ASSERT},
1006 { 8, do_unassert, "unassert", T_UNASSERT},
1007 { -1, 0, "", T_UNUSED},
1010 /* When a directive handler is called,
1011 this points to the # (or the : of the %:) that started the directive. */
1012 U_CHAR *directive_start;
1014 /* table to tell if char can be part of a C identifier. */
1015 U_CHAR is_idchar[256];
1016 /* table to tell if char can be first char of a c identifier. */
1017 U_CHAR is_idstart[256];
1018 /* table to tell if c is horizontal space. */
1019 U_CHAR is_hor_space[256];
1020 /* table to tell if c is horizontal or vertical space. */
1021 static U_CHAR is_space[256];
1022 /* names of some characters */
1023 static char *char_name[256];
1025 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
1026 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
1028 static int errors = 0; /* Error counter for exit code */
1030 /* Name of output file, for error messages. */
1031 static char *out_fname;
1033 /* Zero means dollar signs are punctuation.
1034 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
1035 This must be 0 for correct processing of this ANSI C program:
1037 #define lose(b) foo (b)
1040 static int dollars_in_ident;
1041 #ifndef DOLLARS_IN_IDENTIFIERS
1042 #define DOLLARS_IN_IDENTIFIERS 1
1046 /* Stack of conditionals currently in progress
1047 (including both successful and failing conditionals). */
1050 struct if_stack *next; /* for chaining to the next stack frame */
1051 char *fname; /* copied from input when frame is made */
1052 int lineno; /* similarly */
1053 int if_succeeded; /* true if a leg of this if-group
1054 has been passed through rescan */
1055 U_CHAR *control_macro; /* For #ifndef at start of file,
1056 this is the macro name tested. */
1057 enum node_type type; /* type of last directive seen in this group */
1059 typedef struct if_stack IF_STACK_FRAME;
1060 static IF_STACK_FRAME *if_stack = NULL;
1062 /* Buffer of -M output. */
1063 static char *deps_buffer;
1065 /* Number of bytes allocated in above. */
1066 static int deps_allocated_size;
1068 /* Number of bytes used. */
1069 static int deps_size;
1071 /* Number of bytes since the last newline. */
1072 static int deps_column;
1074 /* Nonzero means -I- has been seen,
1075 so don't look for #include "foo" the source-file directory. */
1076 static int ignore_srcdir;
1078 static int safe_read PROTO((int, char *, int));
1079 static void safe_write PROTO((int, char *, int));
1081 int main PROTO((int, char **));
1083 static void path_include PROTO((char *));
1085 static U_CHAR *index0 PROTO((U_CHAR *, int, size_t));
1087 static void trigraph_pcp PROTO((FILE_BUF *));
1089 static void newline_fix PROTO((U_CHAR *));
1090 static void name_newline_fix PROTO((U_CHAR *));
1092 static char *get_lintcmd PROTO((U_CHAR *, U_CHAR *, U_CHAR **, int *, int *));
1094 static void rescan PROTO((FILE_BUF *, int));
1096 static FILE_BUF expand_to_temp_buffer PROTO((U_CHAR *, U_CHAR *, int, int));
1098 static int handle_directive PROTO((FILE_BUF *, FILE_BUF *));
1100 static struct tm *timestamp PROTO((void));
1101 static void special_symbol PROTO((HASHNODE *, FILE_BUF *));
1103 static int is_system_include PROTO((char *));
1104 static char *base_name PROTO((char *));
1105 static int absolute_filename PROTO((char *));
1106 static size_t simplify_filename PROTO((char *));
1108 static char *read_filename_string PROTO((int, FILE *));
1109 static struct file_name_map *read_name_map PROTO((char *));
1110 static int open_include_file PROTO((char *, struct file_name_list *, U_CHAR *, struct include_file **));
1111 static char *remap_include_file PROTO((char *, struct file_name_list *));
1112 static int lookup_ino_include PROTO((struct include_file *));
1114 static void finclude PROTO((int, struct include_file *, FILE_BUF *, int, struct file_name_list *));
1115 static void record_control_macro PROTO((struct include_file *, U_CHAR *));
1117 static char *check_precompiled PROTO((int, struct stat *, char *, char **));
1118 static int check_preconditions PROTO((char *));
1119 static void pcfinclude PROTO((U_CHAR *, U_CHAR *, U_CHAR *, FILE_BUF *));
1120 static void pcstring_used PROTO((HASHNODE *));
1121 static void write_output PROTO((void));
1122 static void pass_thru_directive PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *));
1124 static MACRODEF create_definition PROTO((U_CHAR *, U_CHAR *, FILE_BUF *));
1126 static int check_macro_name PROTO((U_CHAR *, char *));
1127 static int compare_defs PROTO((DEFINITION *, DEFINITION *));
1128 static int comp_def_part PROTO((int, U_CHAR *, int, U_CHAR *, int, int));
1130 static DEFINITION *collect_expansion PROTO((U_CHAR *, U_CHAR *, int, struct arglist *));
1132 int check_assertion PROTO((U_CHAR *, int, int, struct arglist *));
1133 static int compare_token_lists PROTO((struct arglist *, struct arglist *));
1135 static struct arglist *read_token_list PROTO((U_CHAR **, U_CHAR *, int *));
1136 static void free_token_list PROTO((struct arglist *));
1138 static ASSERTION_HASHNODE *assertion_install PROTO((U_CHAR *, int, int));
1139 static ASSERTION_HASHNODE *assertion_lookup PROTO((U_CHAR *, int, int));
1140 static void delete_assertion PROTO((ASSERTION_HASHNODE *));
1142 static void do_once PROTO((void));
1144 static HOST_WIDE_INT eval_if_expression PROTO((U_CHAR *, int));
1145 static void conditional_skip PROTO((FILE_BUF *, int, enum node_type, U_CHAR *, FILE_BUF *));
1146 static void skip_if_group PROTO((FILE_BUF *, int, FILE_BUF *));
1147 static void validate_else PROTO((U_CHAR *, U_CHAR *));
1149 static U_CHAR *skip_to_end_of_comment PROTO((FILE_BUF *, int *, int));
1150 static U_CHAR *skip_quoted_string PROTO((U_CHAR *, U_CHAR *, int, int *, int *, int *));
1151 static char *quote_string PROTO((char *, char *));
1152 static U_CHAR *skip_paren_group PROTO((FILE_BUF *));
1154 /* Last arg to output_line_directive. */
1155 enum file_change_code {same_file, enter_file, leave_file};
1156 static void output_line_directive PROTO((FILE_BUF *, FILE_BUF *, int, enum file_change_code));
1158 static void macroexpand PROTO((HASHNODE *, FILE_BUF *));
1161 static char *macarg PROTO((struct argdata *, int));
1163 static U_CHAR *macarg1 PROTO((U_CHAR *, U_CHAR *, int *, int *, int *, int));
1165 static int discard_comments PROTO((U_CHAR *, int, int));
1167 static int change_newlines PROTO((U_CHAR *, int));
1169 char *my_strerror PROTO((int));
1170 void error PRINTF_PROTO_1((char *, ...));
1171 static void verror PROTO((char *, va_list));
1172 static void error_from_errno PROTO((char *));
1173 void warning PRINTF_PROTO_1((char *, ...));
1174 static void vwarning PROTO((char *, va_list));
1175 static void error_with_line PRINTF_PROTO_2((int, char *, ...));
1176 static void verror_with_line PROTO((int, char *, va_list));
1177 static void vwarning_with_line PROTO((int, char *, va_list));
1178 static void warning_with_line PRINTF_PROTO_2((int, char *, ...));
1179 void pedwarn PRINTF_PROTO_1((char *, ...));
1180 void pedwarn_with_line PRINTF_PROTO_2((int, char *, ...));
1181 static void pedwarn_with_file_and_line PRINTF_PROTO_3((char *, int, char *, ...));
1183 static void print_containing_files PROTO((void));
1185 static int line_for_error PROTO((int));
1186 static int grow_outbuf PROTO((FILE_BUF *, int));
1188 static HASHNODE *install PROTO((U_CHAR *, int, enum node_type, char *, int));
1189 HASHNODE *lookup PROTO((U_CHAR *, int, int));
1190 static void delete_macro PROTO((HASHNODE *));
1191 static int hashf PROTO((U_CHAR *, int, int));
1193 static void dump_single_macro PROTO((HASHNODE *, FILE *));
1194 static void dump_all_macros PROTO((void));
1195 static void dump_defn_1 PROTO((U_CHAR *, int, int, FILE *));
1196 static void dump_arg_n PROTO((DEFINITION *, int, FILE *));
1198 static void initialize_char_syntax PROTO((void));
1199 static void initialize_builtins PROTO((FILE_BUF *, FILE_BUF *));
1201 static void make_definition PROTO((char *, FILE_BUF *));
1202 static void make_undef PROTO((char *, FILE_BUF *));
1204 static void make_assertion PROTO((char *, char *));
1206 static struct file_name_list *new_include_prefix PROTO((struct file_name_list *, char *, char *));
1207 static void append_include_chain PROTO((struct file_name_list *, struct file_name_list *));
1209 static void deps_output PROTO((char *, int));
1211 static void fatal PRINTF_PROTO_1((char *, ...)) __attribute__ ((noreturn));
1212 void fancy_abort PROTO((void)) __attribute__ ((noreturn));
1213 static void perror_with_name PROTO((char *));
1214 static void pfatal_with_name PROTO((char *)) __attribute__ ((noreturn));
1215 static void pipe_closed PROTO((int)) __attribute__ ((noreturn));
1217 static void memory_full PROTO((void)) __attribute__ ((noreturn));
1218 GENERIC_PTR xmalloc PROTO((size_t));
1219 static GENERIC_PTR xrealloc PROTO((GENERIC_PTR, size_t));
1220 static GENERIC_PTR xcalloc PROTO((size_t, size_t));
1221 static char *savestring PROTO((char *));
1223 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1224 retrying if necessary. Return a negative value if an error occurs,
1225 otherwise return the actual number of bytes read,
1226 which must be LEN unless end-of-file was reached. */
1229 safe_read (desc, ptr, len)
1236 int nchars = read (desc, ptr, left);
1253 /* Write LEN bytes at PTR to descriptor DESC,
1254 retrying if necessary, and treating any real error as fatal. */
1257 safe_write (desc, ptr, len)
1263 int written = write (desc, ptr, len);
1270 pfatal_with_name (out_fname);
1287 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1288 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1289 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1290 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1291 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1293 /* Record the option used with each element of pend_assertions.
1294 This is preparation for supporting more than one option for making
1296 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1297 int inhibit_predefs = 0;
1298 int no_standard_includes = 0;
1299 int no_standard_cplusplus_includes = 0;
1300 int missing_newline = 0;
1302 /* Non-0 means don't output the preprocessed program. */
1303 int inhibit_output = 0;
1304 /* Non-0 means -v, so print the full set of include dirs. */
1307 /* File name which deps are being written to.
1308 This is 0 if deps are being written to stdout. */
1309 char *deps_file = 0;
1310 /* Fopen file mode to open deps_file with. */
1311 char *deps_mode = "a";
1312 /* Stream on which to print the dependency information. */
1313 FILE *deps_stream = 0;
1314 /* Target-name to write with the dependency information. */
1315 char *deps_target = 0;
1318 /* Get rid of any avoidable limit on stack size. */
1322 /* Set the stack limit huge so that alloca (particularly stringtab
1323 in dbxread.c) does not fail. */
1324 getrlimit (RLIMIT_STACK, &rlim);
1325 rlim.rlim_cur = rlim.rlim_max;
1326 setrlimit (RLIMIT_STACK, &rlim);
1328 #endif /* RLIMIT_STACK defined */
1331 signal (SIGPIPE, pipe_closed);
1334 progname = base_name (argv[0]);
1338 /* Remove extension from PROGNAME. */
1340 char *s = progname = savestring (progname);
1342 if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
1343 if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
1344 && (p[1] == 'e' || p[1] == 'E')
1345 && (p[2] == 'x' || p[2] == 'X')
1346 && (p[3] == 'e' || p[3] == 'E')
1355 /* Initialize is_idchar to allow $. */
1356 dollars_in_ident = 1;
1357 initialize_char_syntax ();
1358 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1360 no_line_directives = 0;
1362 dump_macros = dump_none;
1365 cplusplus_comments = 1;
1367 bzero ((char *) pend_files, argc * sizeof (char *));
1368 bzero ((char *) pend_defs, argc * sizeof (char *));
1369 bzero ((char *) pend_undefs, argc * sizeof (char *));
1370 bzero ((char *) pend_assertions, argc * sizeof (char *));
1371 bzero ((char *) pend_includes, argc * sizeof (char *));
1373 /* Process switches and find input file name. */
1375 for (i = 1; i < argc; i++) {
1376 if (argv[i][0] != '-') {
1377 if (out_fname != NULL)
1378 fatal ("Usage: %s [switches] input output", argv[0]);
1379 else if (in_fname != NULL)
1380 out_fname = argv[i];
1384 switch (argv[i][1]) {
1387 if (!strcmp (argv[i], "-include")) {
1389 fatal ("Filename missing after `-include' option");
1391 simplify_filename (pend_includes[i] = argv[++i]);
1393 if (!strcmp (argv[i], "-imacros")) {
1395 fatal ("Filename missing after `-imacros' option");
1397 simplify_filename (pend_files[i] = argv[++i]);
1399 if (!strcmp (argv[i], "-iprefix")) {
1401 fatal ("Filename missing after `-iprefix' option");
1403 include_prefix = argv[++i];
1405 if (!strcmp (argv[i], "-ifoutput")) {
1406 output_conditionals = 1;
1408 if (!strcmp (argv[i], "-isystem")) {
1409 struct file_name_list *dirtmp;
1411 if (! (dirtmp = new_include_prefix (NULL_PTR, "", argv[++i])))
1413 dirtmp->c_system_include_path = 1;
1415 if (before_system == 0)
1416 before_system = dirtmp;
1418 last_before_system->next = dirtmp;
1419 last_before_system = dirtmp; /* Tail follows the last one */
1421 /* Add directory to end of path for includes,
1422 with the default prefix at the front of its name. */
1423 if (!strcmp (argv[i], "-iwithprefix")) {
1424 struct file_name_list *dirtmp;
1427 if (include_prefix != 0)
1428 prefix = include_prefix;
1430 prefix = savestring (GCC_INCLUDE_DIR);
1431 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1432 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1433 prefix[strlen (prefix) - 7] = 0;
1436 if (! (dirtmp = new_include_prefix (NULL_PTR, prefix, argv[++i])))
1439 if (after_include == 0)
1440 after_include = dirtmp;
1442 last_after_include->next = dirtmp;
1443 last_after_include = dirtmp; /* Tail follows the last one */
1445 /* Add directory to main path for includes,
1446 with the default prefix at the front of its name. */
1447 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1448 struct file_name_list *dirtmp;
1451 if (include_prefix != 0)
1452 prefix = include_prefix;
1454 prefix = savestring (GCC_INCLUDE_DIR);
1455 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1456 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1457 prefix[strlen (prefix) - 7] = 0;
1460 dirtmp = new_include_prefix (NULL_PTR, prefix, argv[++i]);
1461 append_include_chain (dirtmp, dirtmp);
1463 /* Add directory to end of path for includes. */
1464 if (!strcmp (argv[i], "-idirafter")) {
1465 struct file_name_list *dirtmp;
1467 if (! (dirtmp = new_include_prefix (NULL_PTR, "", argv[++i])))
1470 if (after_include == 0)
1471 after_include = dirtmp;
1473 last_after_include->next = dirtmp;
1474 last_after_include = dirtmp; /* Tail follows the last one */
1479 if (out_fname != NULL)
1480 fatal ("Output filename specified twice");
1482 fatal ("Filename missing after -o option");
1483 out_fname = argv[++i];
1484 if (!strcmp (out_fname, "-"))
1489 if (!strcmp (argv[i], "-pedantic"))
1491 else if (!strcmp (argv[i], "-pedantic-errors")) {
1493 pedantic_errors = 1;
1494 } else if (!strcmp (argv[i], "-pcp")) {
1497 fatal ("Filename missing after -pcp option");
1498 pcp_fname = argv[++i];
1500 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1501 ? fopen (pcp_fname, "w")
1503 if (pcp_outfile == 0)
1504 pfatal_with_name (pcp_fname);
1510 if (!strcmp (argv[i], "-traditional")) {
1512 cplusplus_comments = 0;
1513 if (dollars_in_ident > 0)
1514 dollars_in_ident = 1;
1515 } else if (!strcmp (argv[i], "-trigraphs")) {
1521 if (! strcmp (argv[i], "-lang-c"))
1522 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1523 if (! strcmp (argv[i], "-lang-c89"))
1524 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1525 if (! strcmp (argv[i], "-lang-c++"))
1526 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1527 if (! strcmp (argv[i], "-lang-objc"))
1528 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1529 if (! strcmp (argv[i], "-lang-objc++"))
1530 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1531 if (! strcmp (argv[i], "-lang-asm"))
1533 if (! strcmp (argv[i], "-lint"))
1538 cplusplus = 1, cplusplus_comments = 1;
1542 inhibit_warnings = 1;
1546 if (!strcmp (argv[i], "-Wtrigraphs"))
1548 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1550 else if (!strcmp (argv[i], "-Wcomment"))
1552 else if (!strcmp (argv[i], "-Wno-comment"))
1554 else if (!strcmp (argv[i], "-Wcomments"))
1556 else if (!strcmp (argv[i], "-Wno-comments"))
1558 else if (!strcmp (argv[i], "-Wtraditional"))
1560 else if (!strcmp (argv[i], "-Wno-traditional"))
1562 else if (!strcmp (argv[i], "-Wimport"))
1564 else if (!strcmp (argv[i], "-Wno-import"))
1566 else if (!strcmp (argv[i], "-Werror"))
1567 warnings_are_errors = 1;
1568 else if (!strcmp (argv[i], "-Wno-error"))
1569 warnings_are_errors = 0;
1570 else if (!strcmp (argv[i], "-Wall"))
1578 /* The style of the choices here is a bit mixed.
1579 The chosen scheme is a hybrid of keeping all options in one string
1580 and specifying each option in a separate argument:
1581 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1582 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1583 -M[M][G][D file]. This is awkward to handle in specs, and is not
1585 /* ??? -MG must be specified in addition to one of -M or -MM.
1586 This can be relaxed in the future without breaking anything.
1587 The converse isn't true. */
1589 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1590 if (!strcmp (argv[i], "-MG"))
1592 print_deps_missing_files = 1;
1595 if (!strcmp (argv[i], "-M"))
1597 else if (!strcmp (argv[i], "-MM"))
1599 else if (!strcmp (argv[i], "-MD"))
1601 else if (!strcmp (argv[i], "-MMD"))
1603 /* For -MD and -MMD options, write deps on file named by next arg. */
1604 if (!strcmp (argv[i], "-MD")
1605 || !strcmp (argv[i], "-MMD")) {
1607 fatal ("Filename missing after %s option", argv[i]);
1609 deps_file = argv[i];
1612 /* For -M and -MM, write deps on standard output
1613 and suppress the usual output. */
1614 deps_stream = stdout;
1621 char *p = argv[i] + 2;
1623 while ((c = *p++)) {
1624 /* Arg to -d specifies what parts of macros to dump */
1627 dump_macros = dump_only;
1631 dump_macros = dump_names;
1634 dump_macros = dump_definitions;
1642 if (argv[i][2] == '3')
1647 fprintf (stderr, "GNU CPP version %s", version_string);
1648 #ifdef TARGET_VERSION
1651 fprintf (stderr, "\n");
1656 print_include_names = 1;
1660 if (argv[i][2] != 0)
1661 pend_defs[i] = argv[i] + 2;
1662 else if (i + 1 == argc)
1663 fatal ("Macro name missing after -D option");
1665 i++, pend_defs[i] = argv[i];
1672 if (argv[i][2] != 0)
1674 else if (i + 1 == argc)
1675 fatal ("Assertion missing after -A option");
1679 if (!strcmp (p, "-")) {
1680 /* -A- eliminates all predefined macros and assertions.
1681 Let's include also any that were specified earlier
1682 on the command line. That way we can get rid of any
1683 that were passed automatically in from GCC. */
1685 inhibit_predefs = 1;
1686 for (j = 0; j < i; j++)
1687 pend_defs[j] = pend_assertions[j] = 0;
1689 pend_assertions[i] = p;
1690 pend_assertion_options[i] = "-A";
1695 case 'U': /* JF #undef something */
1696 if (argv[i][2] != 0)
1697 pend_undefs[i] = argv[i] + 2;
1698 else if (i + 1 == argc)
1699 fatal ("Macro name missing after -U option");
1701 pend_undefs[i] = argv[i+1], i++;
1705 put_out_comments = 1;
1708 case 'E': /* -E comes from cc -E; ignore it. */
1712 no_line_directives = 1;
1715 case '$': /* Don't include $ in identifiers. */
1716 dollars_in_ident = 0;
1719 case 'I': /* Add directory to path for includes. */
1721 struct file_name_list *dirtmp;
1723 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1725 /* Don't use any preceding -I directories for #include <...>. */
1726 first_bracket_include = 0;
1729 dirtmp = new_include_prefix (last_include, "",
1730 argv[i][2] ? argv[i] + 2 : argv[++i]);
1731 append_include_chain (dirtmp, dirtmp);
1737 if (!strcmp (argv[i], "-nostdinc"))
1738 /* -nostdinc causes no default include directories.
1739 You must specify all include-file directories with -I. */
1740 no_standard_includes = 1;
1741 else if (!strcmp (argv[i], "-nostdinc++"))
1742 /* -nostdinc++ causes no default C++-specific include directories. */
1743 no_standard_cplusplus_includes = 1;
1744 else if (!strcmp (argv[i], "-noprecomp"))
1749 /* Sun compiler passes undocumented switch "-undef".
1750 Let's assume it means to inhibit the predefined symbols. */
1751 inhibit_predefs = 1;
1754 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1755 if (in_fname == NULL) {
1758 } else if (out_fname == NULL) {
1761 } /* else fall through into error */
1764 fatal ("Invalid option `%s'", argv[i]);
1769 /* Add dirs from CPATH after dirs from -I. */
1770 /* There seems to be confusion about what CPATH should do,
1771 so for the moment it is not documented. */
1772 /* Some people say that CPATH should replace the standard include dirs,
1773 but that seems pointless: it comes before them, so it overrides them
1775 cp = getenv ("CPATH");
1776 if (cp && ! no_standard_includes)
1779 /* Now that dollars_in_ident is known, initialize is_idchar. */
1780 initialize_char_syntax ();
1782 /* Initialize output buffer */
1784 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1785 outbuf.bufp = outbuf.buf;
1786 outbuf.length = OUTBUF_SIZE;
1788 /* Do partial setup of input buffer for the sake of generating
1789 early #line directives (when -g is in effect). */
1791 fp = &instack[++indepth];
1792 if (in_fname == NULL)
1794 fp->nominal_fname = fp->fname = in_fname;
1797 /* In C++, wchar_t is a distinct basic type, and we can expect
1798 __wchar_t to be defined by cc1plus. */
1800 wchar_type = "__wchar_t";
1802 /* Install __LINE__, etc. Must follow initialize_char_syntax
1803 and option processing. */
1804 initialize_builtins (fp, &outbuf);
1806 /* Do standard #defines and assertions
1807 that identify system and machine type. */
1809 if (!inhibit_predefs) {
1810 char *p = (char *) alloca (strlen (predefs) + 1);
1811 strcpy (p, predefs);
1814 while (*p == ' ' || *p == '\t')
1816 /* Handle -D options. */
1817 if (p[0] == '-' && p[1] == 'D') {
1819 while (*p && *p != ' ' && *p != '\t')
1824 output_line_directive (fp, &outbuf, 0, same_file);
1825 make_definition (q, &outbuf);
1826 while (*p == ' ' || *p == '\t')
1828 } else if (p[0] == '-' && p[1] == 'A') {
1829 /* Handle -A options (assertions). */
1838 past_name = assertion;
1839 /* Locate end of name. */
1840 while (*past_name && *past_name != ' '
1841 && *past_name != '\t' && *past_name != '(')
1843 /* Locate `(' at start of value. */
1845 while (*value && (*value == ' ' || *value == '\t'))
1847 if (*value++ != '(')
1849 while (*value && (*value == ' ' || *value == '\t'))
1852 /* Locate end of value. */
1853 while (*past_value && *past_value != ' '
1854 && *past_value != '\t' && *past_value != ')')
1856 termination = past_value;
1857 while (*termination && (*termination == ' ' || *termination == '\t'))
1859 if (*termination++ != ')')
1861 if (*termination && *termination != ' ' && *termination != '\t')
1863 /* Temporarily null-terminate the value. */
1864 save_char = *termination;
1865 *termination = '\0';
1866 /* Install the assertion. */
1867 make_assertion ("-A", assertion);
1868 *termination = (char) save_char;
1870 while (*p == ' ' || *p == '\t')
1878 /* Now handle the command line options. */
1880 /* Do -U's, -D's and -A's in the order they were seen. */
1881 for (i = 1; i < argc; i++) {
1882 if (pend_undefs[i]) {
1884 output_line_directive (fp, &outbuf, 0, same_file);
1885 make_undef (pend_undefs[i], &outbuf);
1889 output_line_directive (fp, &outbuf, 0, same_file);
1890 make_definition (pend_defs[i], &outbuf);
1892 if (pend_assertions[i])
1893 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1896 done_initializing = 1;
1898 { /* Read the appropriate environment variable and if it exists
1899 replace include_defaults with the listed path. */
1901 switch ((objc << 1) + cplusplus)
1904 epath = getenv ("C_INCLUDE_PATH");
1907 epath = getenv ("CPLUS_INCLUDE_PATH");
1910 epath = getenv ("OBJC_INCLUDE_PATH");
1913 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1916 /* If the environment var for this language is set,
1917 add to the default list of include directories. */
1920 char *startp, *endp;
1922 for (num_dirs = 1, startp = epath; *startp; startp++)
1923 if (*startp == PATH_SEPARATOR)
1926 = (struct default_include *) xmalloc ((num_dirs
1927 * sizeof (struct default_include))
1928 + sizeof (include_defaults_array));
1929 startp = endp = epath;
1933 if (c == PATH_SEPARATOR || !c) {
1935 include_defaults[num_dirs].fname
1936 = startp == endp ? "." : savestring (startp);
1938 include_defaults[num_dirs].cplusplus = cplusplus;
1939 include_defaults[num_dirs].cxx_aware = 1;
1946 /* Put the usual defaults back in at the end. */
1947 bcopy ((char *) include_defaults_array,
1948 (char *) &include_defaults[num_dirs],
1949 sizeof (include_defaults_array));
1953 append_include_chain (before_system, last_before_system);
1954 first_system_include = before_system;
1956 /* Unless -fnostdinc,
1957 tack on the standard include file dirs to the specified list */
1958 if (!no_standard_includes) {
1959 struct default_include *p = include_defaults;
1960 char *specd_prefix = include_prefix;
1961 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1962 int default_len = 0;
1963 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1964 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1965 default_len = strlen (default_prefix) - 7;
1966 default_prefix[default_len] = 0;
1968 /* Search "translated" versions of GNU directories.
1969 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1970 if (specd_prefix != 0 && default_len != 0)
1971 for (p = include_defaults; p->fname; p++) {
1972 /* Some standard dirs are only for C++. */
1973 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1974 /* Does this dir start with the prefix? */
1975 if (!strncmp (p->fname, default_prefix, default_len)) {
1976 /* Yes; change prefix and add to search list. */
1977 struct file_name_list *new
1978 = new_include_prefix (NULL_PTR, specd_prefix,
1979 p->fname + default_len);
1981 new->c_system_include_path = !p->cxx_aware;
1982 append_include_chain (new, new);
1983 if (first_system_include == 0)
1984 first_system_include = new;
1989 /* Search ordinary names for GNU include directories. */
1990 for (p = include_defaults; p->fname; p++) {
1991 /* Some standard dirs are only for C++. */
1992 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1993 struct file_name_list *new
1994 = new_include_prefix (NULL_PTR, "", p->fname);
1996 new->c_system_include_path = !p->cxx_aware;
1997 append_include_chain (new, new);
1998 if (first_system_include == 0)
1999 first_system_include = new;
2005 /* Tack the after_include chain at the end of the include chain. */
2006 append_include_chain (after_include, last_after_include);
2007 if (first_system_include == 0)
2008 first_system_include = after_include;
2010 /* With -v, print the list of dirs to search. */
2012 struct file_name_list *p;
2013 fprintf (stderr, "#include \"...\" search starts here:\n");
2014 for (p = include; p; p = p->next) {
2015 if (p == first_bracket_include)
2016 fprintf (stderr, "#include <...> search starts here:\n");
2018 fprintf (stderr, " .\n");
2019 else if (!strcmp (p->fname, "/") || !strcmp (p->fname, "//"))
2020 fprintf (stderr, " %s\n", p->fname);
2022 /* Omit trailing '/'. */
2023 fprintf (stderr, " %.*s\n", (int) strlen (p->fname) - 1, p->fname);
2025 fprintf (stderr, "End of search list.\n");
2028 /* -MG doesn't select the form of output and must be specified with one of
2029 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
2030 inhibit compilation. */
2031 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
2032 fatal ("-MG must be specified with one of -M or -MM");
2034 /* Either of two environment variables can specify output of deps.
2035 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
2036 where OUTPUT_FILE is the file to write deps info to
2037 and DEPS_TARGET is the target to mention in the deps. */
2040 && (getenv ("SUNPRO_DEPENDENCIES") != 0
2041 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
2042 char *spec = getenv ("DEPENDENCIES_OUTPUT");
2047 spec = getenv ("SUNPRO_DEPENDENCIES");
2054 /* Find the space before the DEPS_TARGET, if there is one. */
2055 /* This should use index. (mrs) */
2056 while (*s != 0 && *s != ' ') s++;
2058 deps_target = s + 1;
2059 output_file = xmalloc (s - spec + 1);
2060 bcopy (spec, output_file, s - spec);
2061 output_file[s - spec] = 0;
2068 deps_file = output_file;
2072 /* For -M, print the expected object file name
2073 as the target of this Make-rule. */
2075 deps_allocated_size = 200;
2076 deps_buffer = xmalloc (deps_allocated_size);
2082 deps_output (deps_target, ':');
2083 } else if (*in_fname == 0) {
2084 deps_output ("-", ':');
2089 q = base_name (in_fname);
2091 /* Copy remainder to mungable area. */
2092 p = (char *) alloca (strlen(q) + 8);
2095 /* Output P, but remove known suffixes. */
2099 && p[len - 2] == '.'
2100 && index("cCsSm", p[len - 1]))
2103 && p[len - 3] == '.'
2104 && p[len - 2] == 'c'
2105 && p[len - 1] == 'c')
2108 && p[len - 4] == '.'
2109 && p[len - 3] == 'c'
2110 && p[len - 2] == 'x'
2111 && p[len - 1] == 'x')
2114 && p[len - 4] == '.'
2115 && p[len - 3] == 'c'
2116 && p[len - 2] == 'p'
2117 && p[len - 1] == 'p')
2120 /* Supply our own suffix. */
2127 deps_output (p, ':');
2128 deps_output (in_fname, ' ');
2132 /* Scan the -imacros files before the main input.
2133 Much like #including them, but with no_output set
2134 so that only their macro definitions matter. */
2136 no_output++; no_record_file++;
2137 for (i = 1; i < argc; i++)
2138 if (pend_files[i]) {
2139 struct include_file *inc;
2140 int fd = open_include_file (pend_files[i], NULL_PTR, NULL_PTR, &inc);
2142 perror_with_name (pend_files[i]);
2143 return FATAL_EXIT_CODE;
2145 finclude (fd, inc, &outbuf, 0, NULL_PTR);
2147 no_output--; no_record_file--;
2149 /* Copy the entire contents of the main input file into
2150 the stacked input buffer previously allocated for it. */
2152 /* JF check for stdin */
2153 if (in_fname == NULL || *in_fname == 0) {
2156 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
2159 if (fstat (f, &st) != 0)
2160 pfatal_with_name (in_fname);
2161 fp->nominal_fname = fp->fname = in_fname;
2163 fp->system_header_p = 0;
2164 /* JF all this is mine about reading pipes and ttys */
2165 if (! S_ISREG (st.st_mode)) {
2166 /* Read input from a file that is not a normal disk file.
2167 We cannot preallocate a buffer with the correct size,
2168 so we must read in the file a piece at the time and make it bigger. */
2173 if (S_ISDIR (st.st_mode))
2174 fatal ("Input file `%s' is a directory", in_fname);
2178 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2180 cnt = safe_read (f, (char *) fp->buf + size, bsize - size);
2181 if (cnt < 0) goto perror; /* error! */
2183 if (size != bsize) break; /* End of file */
2185 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2189 /* Read a file whose size we can determine in advance.
2190 For the sake of VMS, st.st_size is just an upper bound. */
2191 fp->buf = (U_CHAR *) xmalloc (st.st_size + 2);
2192 fp->length = safe_read (f, (char *) fp->buf, st.st_size);
2193 if (fp->length < 0) goto perror;
2196 fp->if_stack = if_stack;
2198 /* Make sure data ends with a newline. And put a null after it. */
2200 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2201 /* Backslash-newline at end is not good enough. */
2202 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2203 fp->buf[fp->length++] = '\n';
2204 missing_newline = 1;
2206 fp->buf[fp->length] = '\0';
2208 /* Unless inhibited, convert trigraphs in the input. */
2213 /* Now that we know the input file is valid, open the output. */
2215 if (!out_fname || !strcmp (out_fname, ""))
2216 out_fname = "stdout";
2217 else if (! freopen (out_fname, "w", stdout))
2218 pfatal_with_name (out_fname);
2220 output_line_directive (fp, &outbuf, 0, same_file);
2222 /* Scan the -include files before the main input. */
2225 for (i = 1; i < argc; i++)
2226 if (pend_includes[i]) {
2227 struct include_file *inc;
2228 int fd = open_include_file (pend_includes[i], NULL_PTR, NULL_PTR, &inc);
2230 perror_with_name (pend_includes[i]);
2231 return FATAL_EXIT_CODE;
2233 finclude (fd, inc, &outbuf, 0, NULL_PTR);
2237 /* Scan the input, processing macros and directives. */
2239 rescan (&outbuf, 0);
2241 if (missing_newline)
2244 if (pedantic && missing_newline)
2245 pedwarn ("file does not end in newline");
2247 /* Now we have processed the entire input
2248 Write whichever kind of output has been requested. */
2250 if (dump_macros == dump_only)
2252 else if (! inhibit_output) {
2257 /* Don't actually write the deps file if compilation has failed. */
2259 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2260 pfatal_with_name (deps_file);
2261 fputs (deps_buffer, deps_stream);
2262 putc ('\n', deps_stream);
2264 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2265 fatal ("I/O error on output");
2270 if (pcp_outfile && pcp_outfile != stdout
2271 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2272 fatal ("I/O error on `-pcp' output");
2274 if (ferror (stdout) || fclose (stdout) != 0)
2275 fatal ("I/O error on output");
2278 exit (FATAL_EXIT_CODE);
2279 exit (SUCCESS_EXIT_CODE);
2282 pfatal_with_name (in_fname);
2286 /* Given a colon-separated list of file names PATH,
2287 add all the names to the search path for include files. */
2301 struct file_name_list *dirtmp;
2303 /* Find the end of this name. */
2304 while ((c = *q++) != PATH_SEPARATOR && c)
2308 dirtmp = new_include_prefix (last_include, "", p == q ? "." : p);
2310 append_include_chain (dirtmp, dirtmp);
2312 /* Advance past this name. */
2319 /* Return the address of the first character in S that equals C.
2320 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2321 Return 0 if there is no such character. Assume that C itself is not '\0'.
2322 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2323 but unfortunately memchr isn't autoconfigured yet. */
2331 char *p = (char *) s;
2333 char *q = index (p, c);
2335 return (U_CHAR *) q;
2337 size_t l = strlen (p);
2347 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2348 before main CCCP processing. Name `pcp' is also in honor of the
2349 drugs the trigraph designers must have been on.
2351 Using an extra pass through the buffer takes a little extra time,
2352 but is infinitely less hairy than trying to handle trigraphs inside
2353 strings, etc. everywhere, and also makes sure that trigraphs are
2354 only translated in the top level of processing. */
2360 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2363 fptr = bptr = sptr = buf->buf;
2364 lptr = fptr + buf->length;
2365 while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) {
2402 len = sptr - fptr - 2;
2404 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2405 C, this will be memmove (). */
2406 if (bptr != fptr && len > 0)
2407 bcopy ((char *) fptr, (char *) bptr, len);
2413 len = buf->length - (fptr - buf->buf);
2414 if (bptr != fptr && len > 0)
2415 bcopy ((char *) fptr, (char *) bptr, len);
2416 buf->length -= fptr - bptr;
2417 buf->buf[buf->length] = '\0';
2418 if (warn_trigraphs && fptr != bptr)
2419 warning_with_line (0, "%lu trigraph(s) encountered",
2420 (unsigned long) (fptr - bptr) / 2);
2423 /* Move all backslash-newline pairs out of embarrassing places.
2424 Exchange all such pairs following BP
2425 with any potentially-embarrassing characters that follow them.
2426 Potentially-embarrassing characters are / and *
2427 (because a backslash-newline inside a comment delimiter
2428 would cause it not to be recognized). */
2434 register U_CHAR *p = bp;
2436 /* First count the backslash-newline pairs here. */
2438 while (p[0] == '\\' && p[1] == '\n')
2441 /* What follows the backslash-newlines is not embarrassing. */
2443 if (*p != '/' && *p != '*')
2446 /* Copy all potentially embarrassing characters
2447 that follow the backslash-newline pairs
2448 down to where the pairs originally started. */
2450 while (*p == '*' || *p == '/')
2453 /* Now write the same number of pairs after the embarrassing chars. */
2460 /* Like newline_fix but for use within a directive-name.
2461 Move any backslash-newlines up past any following symbol constituents. */
2464 name_newline_fix (bp)
2467 register U_CHAR *p = bp;
2469 /* First count the backslash-newline pairs here. */
2470 while (p[0] == '\\' && p[1] == '\n')
2473 /* What follows the backslash-newlines is not embarrassing. */
2478 /* Copy all potentially embarrassing characters
2479 that follow the backslash-newline pairs
2480 down to where the pairs originally started. */
2482 while (is_idchar[*p])
2485 /* Now write the same number of pairs after the embarrassing chars. */
2492 /* Look for lint commands in comments.
2494 When we come in here, ibp points into a comment. Limit is as one expects.
2495 scan within the comment -- it should start, after lwsp, with a lint command.
2496 If so that command is returned as a (constant) string.
2498 Upon return, any arg will be pointed to with argstart and will be
2499 arglen long. Note that we don't parse that arg since it will just
2500 be printed out again. */
2503 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2504 register U_CHAR *ibp;
2505 register U_CHAR *limit;
2506 U_CHAR **argstart; /* point to command arg */
2507 int *arglen, *cmdlen; /* how long they are */
2509 HOST_WIDE_INT linsize;
2510 register U_CHAR *numptr; /* temp for arg parsing */
2514 SKIP_WHITE_SPACE (ibp);
2516 if (ibp >= limit) return NULL;
2518 linsize = limit - ibp;
2520 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2521 if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) {
2523 return "NOTREACHED";
2525 if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) {
2529 if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) {
2531 return "LINTLIBRARY";
2533 if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) {
2535 ibp += 7; linsize -= 7;
2536 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2538 /* OK, read a number */
2539 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2541 *arglen = numptr - *argstart;
2548 * The main loop of the program.
2550 * Read characters from the input stack, transferring them to the
2553 * Macros are expanded and push levels on the input stack.
2554 * At the end of such a level it is popped off and we keep reading.
2555 * At the end of any other kind of level, we return.
2556 * #-directives are handled, except within macros.
2558 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2559 * and insert them when appropriate. This is set while scanning macro
2560 * arguments before substitution. It is zero when scanning for final output.
2561 * There are three types of Newline markers:
2562 * * Newline - follows a macro name that was not expanded
2563 * because it appeared inside an expansion of the same macro.
2564 * This marker prevents future expansion of that identifier.
2565 * When the input is rescanned into the final output, these are deleted.
2566 * These are also deleted by ## concatenation.
2567 * * Newline Space (or Newline and any other whitespace character)
2568 * stands for a place that tokens must be separated or whitespace
2569 * is otherwise desirable, but where the ANSI standard specifies there
2570 * is no whitespace. This marker turns into a Space (or whichever other
2571 * whitespace char appears in the marker) in the final output,
2572 * but it turns into nothing in an argument that is stringified with #.
2573 * Such stringified arguments are the only place where the ANSI standard
2574 * specifies with precision that whitespace may not appear.
2576 * During this function, IP->bufp is kept cached in IBP for speed of access.
2577 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2578 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2579 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2580 * explicitly, and before RECACHE, since RECACHE uses OBP.
2584 rescan (op, output_marks)
2588 /* Character being scanned in main loop. */
2591 /* Length of pending accumulated identifier. */
2592 register int ident_length = 0;
2594 /* Hash code of pending accumulated identifier. */
2595 register int hash = 0;
2597 /* Current input level (&instack[indepth]). */
2600 /* Pointer for scanning input. */
2601 register U_CHAR *ibp;
2603 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2604 register U_CHAR *limit;
2606 /* Pointer for storing output. */
2607 register U_CHAR *obp;
2609 /* REDO_CHAR is nonzero if we are processing an identifier
2610 after backing up over the terminating character.
2611 Sometimes we process an identifier without backing up over
2612 the terminating character, if the terminating character
2613 is not special. Backing up is done so that the terminating character
2614 will be dispatched on again once the identifier is dealt with. */
2617 /* 1 if within an identifier inside of which a concatenation
2618 marker (Newline -) has been seen. */
2619 int concatenated = 0;
2621 /* While scanning a comment or a string constant,
2622 this records the line it started on, for error messages. */
2625 /* Record position of last `real' newline. */
2626 U_CHAR *beg_of_line;
2628 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2631 do { ip->macro->type = T_MACRO; \
2632 if (ip->free_ptr) free (ip->free_ptr); \
2633 --indepth; } while (0)
2635 /* Reload `rescan's local variables that describe the current
2636 level of the input stack. */
2639 do { ip = &instack[indepth]; \
2641 limit = ip->buf + ip->length; \
2643 check_expand (op, limit - ibp); \
2645 obp = op->bufp; } while (0)
2647 if (no_output && instack[indepth].fname != 0)
2648 skip_if_group (&instack[indepth], 1, NULL);
2655 /* Our caller must always put a null after the end of
2656 the input at each input stack level. */
2666 if (*ibp == '\n' && !ip->macro) {
2667 /* At the top level, always merge lines ending with backslash-newline,
2668 even in middle of identifier. But do not merge lines in a macro,
2669 since backslash might be followed by a newline-space marker. */
2672 --obp; /* remove backslash from obuf */
2675 /* If ANSI, backslash is just another character outside a string. */
2678 /* Otherwise, backslash suppresses specialness of following char,
2679 so copy it here to prevent the switch from seeing it.
2680 But first get any pending identifier processed. */
2681 if (ident_length > 0)
2688 if (ident_length || ip->macro || traditional)
2690 while (*ibp == '\\' && ibp[1] == '\n') {
2696 /* Treat this %: digraph as if it were #. */
2700 if (assertions_flag) {
2703 /* Copy #foo (bar lose) without macro expansion. */
2704 obp[-1] = '#'; /* In case it was '%'. */
2705 SKIP_WHITE_SPACE (ibp);
2706 while (is_idchar[*ibp])
2708 SKIP_WHITE_SPACE (ibp);
2711 skip_paren_group (ip);
2712 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2713 obp += ip->bufp - ibp;
2719 /* If this is expanding a macro definition, don't recognize
2720 preprocessing directives. */
2723 /* If this is expand_into_temp_buffer,
2724 don't recognize them either. Warn about them
2725 only after an actual newline at this level,
2726 not at the beginning of the input level. */
2728 if (ip->buf != beg_of_line)
2729 warning ("preprocessing directive not recognized within macro arg");
2736 /* # keyword: a # must be first nonblank char on the line */
2737 if (beg_of_line == 0)
2742 /* Scan from start of line, skipping whitespace, comments
2743 and backslash-newlines, and see if we reach this #.
2744 If not, this # is not special. */
2746 /* If -traditional, require # to be at beginning of line. */
2749 if (is_hor_space[*bp])
2751 else if (*bp == '\\' && bp[1] == '\n')
2753 else if (*bp == '/' && bp[1] == '*') {
2755 while (!(*bp == '*' && bp[1] == '/'))
2759 /* There is no point in trying to deal with C++ // comments here,
2760 because if there is one, then this # must be part of the
2761 comment and we would never reach here. */
2767 while (bp[1] == '\\' && bp[2] == '\n')
2771 /* %: appears at start of line; skip past the ':' too. */
2780 /* This # can start a directive. */
2782 --obp; /* Don't copy the '#' */
2786 if (! handle_directive (ip, op)) {
2790 /* Not a known directive: treat it as ordinary text.
2791 IP, OP, IBP, etc. have not been changed. */
2792 if (no_output && instack[indepth].fname) {
2793 /* If not generating expanded output,
2794 what we do with ordinary text is skip it.
2795 Discard everything until next # directive. */
2796 skip_if_group (&instack[indepth], 1, 0);
2801 *obp++ = '#'; /* Copy # (even if it was originally %:). */
2802 /* Don't expand an identifier that could be a macro directive.
2803 (Section 3.8.3 of the ANSI C standard) */
2804 SKIP_WHITE_SPACE (ibp);
2805 if (is_idstart[*ibp])
2808 while (is_idchar[*ibp])
2816 /* A # directive has been successfully processed. */
2817 /* If not generating expanded output, ignore everything until
2818 next # directive. */
2819 if (no_output && instack[indepth].fname)
2820 skip_if_group (&instack[indepth], 1, 0);
2826 case '\"': /* skip quoted string */
2828 /* A single quoted string is treated like a double -- some
2829 programs (e.g., troff) are perverse this way */
2834 start_line = ip->lineno;
2836 /* Skip ahead to a matching quote. */
2840 if (ip->macro != 0) {
2841 /* try harder: this string crosses a macro expansion boundary.
2842 This can happen naturally if -traditional.
2843 Otherwise, only -D can make a macro with an unmatched quote. */
2849 error_with_line (line_for_error (start_line),
2850 "unterminated string or character constant");
2851 error_with_line (multiline_string_line,
2852 "possible real start of unterminated constant");
2853 multiline_string_line = 0;
2862 /* Traditionally, end of line ends a string constant with no error.
2863 So exit the loop and record the new line. */
2869 error_with_line (line_for_error (start_line),
2870 "unterminated character constant");
2873 if (multiline_string_line == 0) {
2875 pedwarn_with_line (line_for_error (start_line),
2876 "string constant runs past end of line");
2877 multiline_string_line = ip->lineno - 1;
2885 /* Backslash newline is replaced by nothing at all,
2886 but keep the line counts correct. */
2891 /* ANSI stupidly requires that in \\ the second \
2892 is *not* prevented from combining with a newline. */
2893 while (*ibp == '\\' && ibp[1] == '\n') {
2912 if (*ibp == '\\' && ibp[1] == '\n')
2916 && !(cplusplus_comments && *ibp == '/'))
2924 /* C++ style comment... */
2925 start_line = ip->lineno;
2927 /* Comments are equivalent to spaces. */
2928 if (! put_out_comments)
2932 U_CHAR *before_bp = ibp;
2934 while (++ibp < limit) {
2936 if (ibp[-1] != '\\') {
2937 if (put_out_comments) {
2938 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2939 obp += ibp - before_bp;
2944 warning ("multiline `//' comment");
2946 /* Copy the newline into the output buffer, in order to
2947 avoid the pain of a #line every time a multiline comment
2949 if (!put_out_comments)
2958 /* Ordinary C comment. Skip it, optionally copying it to output. */
2960 start_line = ip->lineno;
2962 ++ibp; /* Skip the star. */
2964 /* If this cpp is for lint, we peek inside the comments: */
2968 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2970 if (lintcmd != NULL) {
2972 check_expand (op, cmdlen + arglen + 14);
2974 /* I believe it is always safe to emit this newline: */
2976 bcopy ("#pragma lint ", (char *) obp, 13);
2978 bcopy (lintcmd, (char *) obp, cmdlen);
2983 bcopy (argbp, (char *) obp, arglen);
2987 /* OK, now bring us back to the state we were in before we entered
2988 this branch. We need #line because the #pragma's newline always
2989 messes up the line count. */
2991 output_line_directive (ip, op, 0, same_file);
2992 check_expand (op, limit - ibp + 2);
2998 /* Comments are equivalent to spaces.
2999 Note that we already output the slash; we might not want it.
3000 For -traditional, a comment is equivalent to nothing. */
3001 if (! put_out_comments) {
3011 U_CHAR *before_bp = ibp;
3016 if (ibp[-2] == '/' && warn_comments)
3017 warning ("`/*' within comment");
3018 if (*ibp == '\\' && ibp[1] == '\n')
3026 /* Copy the newline into the output buffer, in order to
3027 avoid the pain of a #line every time a multiline comment
3029 if (!put_out_comments)
3036 error_with_line (line_for_error (start_line),
3037 "unterminated comment");
3046 if (put_out_comments) {
3047 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
3048 obp += ibp - before_bp;
3054 if (!dollars_in_ident)
3058 case '0': case '1': case '2': case '3': case '4':
3059 case '5': case '6': case '7': case '8': case '9':
3060 /* If digit is not part of identifier, it starts a number,
3061 which means that following letters are not an identifier.
3062 "0x5" does not refer to an identifier "x5".
3063 So copy all alphanumerics that follow without accumulating
3064 as an identifier. Periods also, for sake of "3.e7". */
3066 if (ident_length == 0) {
3068 while (ibp[0] == '\\' && ibp[1] == '\n') {
3073 if (!is_idchar[c] && c != '.') {
3078 /* A sign can be part of a preprocessing number
3079 if it follows an e. */
3080 if (c == 'e' || c == 'E') {
3081 while (ibp[0] == '\\' && ibp[1] == '\n') {
3085 if (*ibp == '+' || *ibp == '-') {
3087 /* But traditional C does not let the token go past the sign. */
3098 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
3099 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
3100 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
3101 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3103 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
3104 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
3105 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
3106 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3110 /* Compute step of hash function, to avoid a proc call on every token */
3111 hash = HASHSTEP (hash, c);
3115 if (ip->fname == 0 && *ibp == '-') {
3116 /* Newline - inhibits expansion of preceding token.
3117 If expanding a macro arg, we keep the newline -.
3118 In final output, it is deleted.
3119 We recognize Newline - in macro bodies and macro args. */
3120 if (! concatenated) {
3125 if (!output_marks) {
3128 /* If expanding a macro arg, keep the newline -. */
3134 /* If reprocessing a macro expansion, newline is a special marker. */
3135 else if (ip->macro != 0) {
3136 /* Newline White is a "funny space" to separate tokens that are
3137 supposed to be separate but without space between.
3138 Here White means any whitespace character.
3139 Newline - marks a recursive macro use that is not
3140 supposed to be expandable. */
3142 if (is_space[*ibp]) {
3143 /* Newline Space does not prevent expansion of preceding token
3144 so expand the preceding token and then come back. */
3145 if (ident_length > 0)
3148 /* If generating final output, newline space makes a space. */
3149 if (!output_marks) {
3151 /* And Newline Newline makes a newline, so count it. */
3152 if (obp[-1] == '\n')
3155 /* If expanding a macro arg, keep the newline space.
3156 If the arg gets stringified, newline space makes nothing. */
3159 } else abort (); /* Newline followed by something random? */
3163 /* If there is a pending identifier, handle it and come back here. */
3164 if (ident_length > 0)
3169 /* Update the line counts and output a #line if necessary. */
3172 if (ip->lineno != op->lineno) {
3174 output_line_directive (ip, op, 1, same_file);
3175 check_expand (op, limit - ibp);
3180 /* Come here either after (1) a null character that is part of the input
3181 or (2) at the end of the input, because there is a null there. */
3184 /* Our input really contains a null character. */
3188 /* At end of a macro-expansion level, pop it and read next level. */
3189 if (ip->macro != 0) {
3192 /* If traditional, and we have an identifier that ends here,
3193 process it now, so we get the right error for recursion. */
3194 if (traditional && ident_length
3195 && ! is_idchar[*instack[indepth - 1].bufp]) {
3204 /* If we don't have a pending identifier,
3205 return at end of input. */
3206 if (ident_length == 0) {
3214 /* If we do have a pending identifier, just consider this null
3215 a special character and arrange to dispatch on it again.
3216 The second time, IDENT_LENGTH will be zero so we will return. */
3222 /* Handle the case of a character such as /, ', " or null
3223 seen following an identifier. Back over it so that
3224 after the identifier is processed the special char
3225 will be dispatched on again. */
3235 if (ident_length > 0) {
3236 register HASHNODE *hp;
3238 /* We have just seen an identifier end. If it's a macro, expand it.
3240 IDENT_LENGTH is the length of the identifier
3241 and HASH is its hash code.
3243 The identifier has already been copied to the output,
3244 so if it is a macro we must remove it.
3246 If REDO_CHAR is 0, the char that terminated the identifier
3247 has been skipped in the output and the input.
3248 OBP-IDENT_LENGTH-1 points to the identifier.
3249 If the identifier is a macro, we must back over the terminator.
3251 If REDO_CHAR is 1, the terminating char has already been
3252 backed over. OBP-IDENT_LENGTH points to the identifier. */
3254 if (!pcp_outfile || pcp_inside_if) {
3255 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3258 if (hp->length == ident_length) {
3259 int obufp_before_macroname;
3260 int op_lineno_before_macroname;
3261 register int i = ident_length;
3262 register U_CHAR *p = hp->name;
3263 register U_CHAR *q = obp - i;
3269 do { /* All this to avoid a strncmp () */
3274 /* We found a use of a macro name.
3275 see if the context shows it is a macro call. */
3277 /* Back up over terminating character if not already done. */
3283 /* Save this as a displacement from the beginning of the output
3284 buffer. We can not save this as a position in the output
3285 buffer, because it may get realloc'ed by RECACHE. */
3286 obufp_before_macroname = (obp - op->buf) - ident_length;
3287 op_lineno_before_macroname = op->lineno;
3289 if (hp->type == T_PCSTRING) {
3290 pcstring_used (hp); /* Mark the definition of this key
3291 as needed, ensuring that it
3293 break; /* Exit loop, since the key cannot have a
3294 definition any longer. */
3297 /* Record whether the macro is disabled. */
3298 disabled = hp->type == T_DISABLED;
3300 /* This looks like a macro ref, but if the macro was disabled,
3301 just copy its name and put in a marker if requested. */
3305 /* This error check caught useful cases such as
3306 #define foo(x,y) bar (x (y,0), y)
3309 error ("recursive use of macro `%s'", hp->name);
3313 check_expand (op, limit - ibp + 2);
3320 /* If macro wants an arglist, verify that a '(' follows.
3321 first skip all whitespace, copying it to the output
3322 after the macro name. Then, if there is no '(',
3323 decide this is not a macro call and leave things that way. */
3324 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3325 && hp->value.defn->nargs >= 0)
3327 U_CHAR *old_ibp = ibp;
3328 U_CHAR *old_obp = obp;
3329 int old_iln = ip->lineno;
3330 int old_oln = op->lineno;
3333 /* Scan forward over whitespace, copying it to the output. */
3334 if (ibp == limit && ip->macro != 0) {
3339 old_iln = ip->lineno;
3340 old_oln = op->lineno;
3342 /* A comment: copy it unchanged or discard it. */
3343 else if (*ibp == '/' && ibp[1] == '*') {
3344 if (put_out_comments) {
3347 } else if (! traditional) {
3351 while (ibp + 1 != limit
3352 && !(ibp[0] == '*' && ibp[1] == '/')) {
3353 /* We need not worry about newline-marks,
3354 since they are never found in comments. */
3356 /* Newline in a file. Count it. */
3360 if (put_out_comments)
3366 if (put_out_comments) {
3371 else if (is_space[*ibp]) {
3373 if (ibp[-1] == '\n') {
3374 if (ip->macro == 0) {
3375 /* Newline in a file. Count it. */
3378 } else if (!output_marks) {
3379 /* A newline mark, and we don't want marks
3380 in the output. If it is newline-hyphen,
3381 discard it entirely. Otherwise, it is
3382 newline-whitechar, so keep the whitechar. */
3392 /* A newline mark; copy both chars to the output. */
3400 /* It isn't a macro call.
3401 Put back the space that we just skipped. */
3404 ip->lineno = old_iln;
3405 op->lineno = old_oln;
3406 /* Exit the for loop. */
3411 /* This is now known to be a macro call.
3412 Discard the macro name from the output,
3413 along with any following whitespace just copied,
3414 but preserve newlines if not outputting marks since this
3415 is more likely to do the right thing with line numbers. */
3416 obp = op->buf + obufp_before_macroname;
3418 op->lineno = op_lineno_before_macroname;
3420 int newlines = op->lineno - op_lineno_before_macroname;
3421 while (0 < newlines--)
3425 /* Prevent accidental token-pasting with a character
3426 before the macro call. */
3427 if (!traditional && obp != op->buf) {
3429 case '!': case '%': case '&': case '*':
3430 case '+': case '-': case '/': case ':':
3431 case '<': case '=': case '>': case '^':
3433 /* If we are expanding a macro arg, make a newline marker
3434 to separate the tokens. If we are making real output,
3435 a plain space will do. */
3442 /* Expand the macro, reading arguments as needed,
3443 and push the expansion on the input stack. */
3446 macroexpand (hp, op);
3448 /* Reexamine input stack, since macroexpand has pushed
3449 a new level on it. */
3456 } /* End hash-table-search loop */
3458 ident_length = hash = 0; /* Stop collecting identifier */
3461 } /* End if (ident_length > 0) */
3463 } /* End per-char loop */
3465 /* Come here to return -- but first give an error message
3466 if there was an unterminated successful conditional. */
3468 if (if_stack != ip->if_stack)
3472 switch (if_stack->type)
3493 error_with_line (line_for_error (if_stack->lineno),
3494 "unterminated `#%s' conditional", str);
3496 if_stack = ip->if_stack;
3500 * Rescan a string into a temporary buffer and return the result
3501 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3503 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3504 * and insert such markers when appropriate. See `rescan' for details.
3505 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3506 * before substitution; it is 0 for other uses.
3509 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3510 U_CHAR *buf, *limit;
3511 int output_marks, assertions;
3513 register FILE_BUF *ip;
3515 int length = limit - buf;
3517 int odepth = indepth;
3518 int save_assertions_flag = assertions_flag;
3520 assertions_flag = assertions;
3525 /* Set up the input on the input stack. */
3527 buf1 = (U_CHAR *) alloca (length + 1);
3529 register U_CHAR *p1 = buf;
3530 register U_CHAR *p2 = buf1;
3537 /* Set up to receive the output. */
3539 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3540 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3545 CHECK_DEPTH ({return obuf;});
3549 ip = &instack[indepth];
3551 ip->nominal_fname = 0;
3553 ip->system_header_p = 0;
3556 ip->length = length;
3557 ip->buf = ip->bufp = buf1;
3558 ip->if_stack = if_stack;
3560 ip->lineno = obuf.lineno = 1;
3562 /* Scan the input, create the output. */
3563 rescan (&obuf, output_marks);
3565 /* Pop input stack to original state. */
3568 if (indepth != odepth)
3571 /* Record the output. */
3572 obuf.length = obuf.bufp - obuf.buf;
3574 assertions_flag = save_assertions_flag;
3579 * Process a # directive. Expects IP->bufp to point after the '#', as in
3580 * `#define foo bar'. Passes to the directive handler
3581 * (do_define, do_include, etc.): the addresses of the 1st and
3582 * last chars of the directive (starting immediately after the #
3583 * keyword), plus op and the keyword table pointer. If the directive
3584 * contains comments it is copied into a temporary buffer sans comments
3585 * and the temporary buffer is passed to the directive handler instead.
3586 * Likewise for backslash-newlines.
3588 * Returns nonzero if this was a known # directive.
3589 * Otherwise, returns zero, without advancing the input pointer.
3593 handle_directive (ip, op)
3596 register U_CHAR *bp, *cp;
3597 register struct directive *kt;
3598 register int ident_length;
3601 /* Nonzero means we must copy the entire directive
3602 to get rid of comments or backslash-newlines. */
3603 int copy_directive = 0;
3605 U_CHAR *ident, *after_ident;
3609 /* Record where the directive started. do_xifdef needs this. */
3610 directive_start = bp - 1;
3612 /* Skip whitespace and \-newline. */
3614 if (is_hor_space[*bp]) {
3615 if (*bp != ' ' && *bp != '\t' && pedantic)
3616 pedwarn ("%s in preprocessing directive", char_name[*bp]);
3618 } else if (*bp == '/' && (bp[1] == '*'
3619 || (cplusplus_comments && bp[1] == '/'))) {
3621 skip_to_end_of_comment (ip, &ip->lineno, 0);
3623 } else if (*bp == '\\' && bp[1] == '\n') {
3624 bp += 2; ip->lineno++;
3628 /* Now find end of directive name.
3629 If we encounter a backslash-newline, exchange it with any following
3630 symbol-constituents so that we end up with a contiguous name. */
3637 if (*cp == '\\' && cp[1] == '\n')
3638 name_newline_fix (cp);
3644 ident_length = cp - bp;
3648 /* A line of just `#' becomes blank. */
3650 if (ident_length == 0 && *after_ident == '\n') {
3651 ip->bufp = after_ident;
3655 if (ident_length == 0 || !is_idstart[*ident]) {
3657 while (is_idchar[*p]) {
3658 if (*p < '0' || *p > '9')
3662 /* Handle # followed by a line number. */
3663 if (p != ident && !is_idchar[*p]) {
3664 static struct directive line_directive_table[] = {
3665 { 4, do_line, "line", T_LINE},
3668 pedwarn ("`#' followed by integer");
3669 after_ident = ident;
3670 kt = line_directive_table;
3674 /* Avoid error for `###' and similar cases unless -pedantic. */
3676 while (*p == '#' || is_hor_space[*p]) p++;
3678 if (pedantic && !lang_asm)
3679 warning ("invalid preprocessing directive");
3685 error ("invalid preprocessing directive name");
3691 * Decode the keyword and call the appropriate expansion
3692 * routine, after moving the input pointer up to the next line.
3694 for (kt = directive_table; kt->length > 0; kt++) {
3695 if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) {
3696 register U_CHAR *buf;
3697 register U_CHAR *limit;
3700 int *already_output;
3702 /* Nonzero means do not delete comments within the directive.
3703 #define needs this when -traditional. */
3708 limit = ip->buf + ip->length;
3711 keep_comments = traditional && kt->traditional_comments;
3712 /* #import is defined only in Objective C, or when on the NeXT. */
3713 if (kt->type == T_IMPORT
3714 && !(objc || lookup ((U_CHAR *) "__NeXT__", -1, -1)))
3717 /* Find the end of this directive (first newline not backslashed
3718 and not in a string or comment).
3719 Set COPY_DIRECTIVE if the directive must be copied
3720 (it contains a backslash-newline or a comment). */
3722 buf = bp = after_ident;
3723 while (bp < limit) {
3724 register U_CHAR c = *bp++;
3732 } else if (traditional)
3739 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_directive, &unterminated);
3740 /* Don't bother calling the directive if we already got an error
3741 message due to unterminated string. Skip everything and pretend
3742 we called the directive. */
3745 /* Traditional preprocessing permits unterminated strings. */
3754 /* <...> is special for #include. */
3756 if (!kt->angle_brackets)
3758 while (bp < limit && *bp != '>' && *bp != '\n') {
3759 if (*bp == '\\' && bp[1] == '\n') {
3769 if (*bp == '\\' && bp[1] == '\n')
3772 || (cplusplus_comments && *bp == '/')) {
3773 U_CHAR *obp = bp - 1;
3775 skip_to_end_of_comment (ip, &ip->lineno, 0);
3777 /* No need to copy the directive because of a comment at the end;
3778 just don't include the comment in the directive. */
3779 if (bp == limit || *bp == '\n') {
3783 /* Don't remove the comments if -traditional. */
3784 if (! keep_comments)
3793 pedwarn ("%s in preprocessing directive", char_name[c]);
3797 --bp; /* Point to the newline */
3805 resume_p = ip->bufp;
3806 /* BP is the end of the directive.
3807 RESUME_P is the next interesting data after the directive.
3808 A comment may come between. */
3810 /* If a directive should be copied through, and -E was given,
3811 pass it through before removing comments. */
3812 if (!no_output && kt->pass_thru && put_out_comments) {
3815 /* Output directive name. */
3816 check_expand (op, kt->length + 2);
3817 /* Make sure # is at the start of a line */
3818 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3823 bcopy (kt->name, op->bufp, kt->length);
3824 op->bufp += kt->length;
3826 /* Output arguments. */
3828 check_expand (op, len);
3829 bcopy (buf, (char *) op->bufp, len);
3831 /* Take account of any (escaped) newlines just output. */
3833 if (buf[len] == '\n')
3836 already_output = &junk;
3837 } /* Don't we need a newline or #line? */
3839 if (copy_directive) {
3840 register U_CHAR *xp = buf;
3841 /* Need to copy entire directive into temp buffer before dispatching */
3843 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for directive plus
3847 /* Copy to the new buffer, deleting comments
3848 and backslash-newlines (and whitespace surrounding the latter). */
3851 register U_CHAR c = *xp++;
3856 abort (); /* A bare newline should never part of the line. */
3859 /* <...> is special for #include. */
3861 if (!kt->angle_brackets)
3863 while (xp < bp && c != '>') {
3865 if (c == '\\' && xp < bp && *xp == '\n')
3876 if (cp != buf && is_hor_space[cp[-1]]) {
3877 while (cp - 1 != buf && is_hor_space[cp[-2]])
3879 SKIP_WHITE_SPACE (xp);
3880 } else if (is_hor_space[*xp]) {
3882 SKIP_WHITE_SPACE (xp);
3884 } else if (traditional && xp < bp) {
3892 register U_CHAR *bp1
3893 = skip_quoted_string (xp - 1, bp, ip->lineno,
3894 NULL_PTR, NULL_PTR, NULL_PTR);
3908 || (cplusplus_comments && *xp == '/')) {
3910 /* If we already copied the directive through,
3911 already_output != 0 prevents outputting comment now. */
3912 skip_to_end_of_comment (ip, already_output, 0);
3914 while (xp != ip->bufp)
3916 /* Delete or replace the slash. */
3917 else if (traditional)
3926 /* Null-terminate the copy. */
3932 ip->bufp = resume_p;
3934 /* Some directives should be written out for cc1 to process,
3935 just as if they were not defined. And sometimes we're copying
3936 definitions through. */
3938 if (!no_output && already_output == 0
3940 || (kt->type == T_DEFINE
3941 && (dump_macros == dump_names
3942 || dump_macros == dump_definitions)))) {
3945 /* Output directive name. */
3946 check_expand (op, kt->length + 1);
3948 bcopy (kt->name, (char *) op->bufp, kt->length);
3949 op->bufp += kt->length;
3951 if (kt->pass_thru || dump_macros == dump_definitions) {
3952 /* Output arguments. */
3954 check_expand (op, len);
3955 bcopy (buf, (char *) op->bufp, len);
3957 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
3960 SKIP_WHITE_SPACE (xp);
3962 while (is_idchar[*xp]) xp++;
3964 check_expand (op, len + 1);
3966 bcopy (yp, op->bufp, len);
3969 } /* Don't we need a newline or #line? */
3971 /* Call the appropriate directive handler. buf now points to
3972 either the appropriate place in the input buffer, or to
3973 the temp buffer if it was necessary to make one. cp
3974 points to the first char after the contents of the (possibly
3975 copied) directive, in either case. */
3976 (*kt->func) (buf, cp, op, kt);
3977 check_expand (op, ip->length - (ip->bufp - ip->buf));
3983 /* It is deliberate that we don't warn about undefined directives.
3984 That is the responsibility of cc1. */
3991 static struct tm *timebuf;
3993 time_t t = time ((time_t *) 0);
3994 timebuf = localtime (&t);
3999 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4000 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
4004 * expand things like __FILE__. Place the expansion into the output
4005 * buffer *without* rescanning.
4009 special_symbol (hp, op)
4016 FILE_BUF *ip = NULL;
4019 int paren = 0; /* For special `defined' keyword */
4021 if (pcp_outfile && pcp_inside_if
4022 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
4023 error ("Predefined macro `%s' used inside `#if' during precompilation",
4026 for (i = indepth; i >= 0; i--)
4027 if (instack[i].fname != NULL) {
4032 error ("cccp error: not in any file?!");
4033 return; /* the show must go on */
4041 if (hp->type == T_FILE)
4042 string = ip->nominal_fname;
4044 string = instack[0].nominal_fname;
4048 buf = (char *) alloca (3 + 4 * strlen (string));
4049 quote_string (buf, string);
4057 case T_INCLUDE_LEVEL:
4059 for (i = indepth; i >= 0; i--)
4060 if (instack[i].fname != NULL)
4063 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
4064 sprintf (buf, "%d", true_indepth - 1);
4068 buf = (char *) alloca (3 + strlen (version_string));
4069 sprintf (buf, "\"%s\"", version_string);
4072 #ifndef NO_BUILTIN_SIZE_TYPE
4078 #ifndef NO_BUILTIN_PTRDIFF_TYPE
4079 case T_PTRDIFF_TYPE:
4088 case T_USER_LABEL_PREFIX_TYPE:
4089 buf = USER_LABEL_PREFIX;
4092 case T_REGISTER_PREFIX_TYPE:
4093 buf = REGISTER_PREFIX;
4096 case T_IMMEDIATE_PREFIX_TYPE:
4097 buf = IMMEDIATE_PREFIX;
4101 buf = hp->value.cpval;
4102 if (pcp_inside_if && pcp_outfile)
4103 /* Output a precondition for this macro use */
4104 fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
4108 buf = (char *) alloca (10);
4109 sprintf (buf, "%d", ip->lineno);
4114 buf = (char *) alloca (20);
4115 timebuf = timestamp ();
4116 if (hp->type == T_DATE)
4117 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
4118 timebuf->tm_mday, timebuf->tm_year + 1900);
4120 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
4124 case T_SPEC_DEFINED:
4125 buf = " 0 "; /* Assume symbol is not defined */
4126 ip = &instack[indepth];
4127 SKIP_WHITE_SPACE (ip->bufp);
4128 if (*ip->bufp == '(') {
4130 ip->bufp++; /* Skip over the paren */
4131 SKIP_WHITE_SPACE (ip->bufp);
4134 if (!is_idstart[*ip->bufp])
4136 if ((hp = lookup (ip->bufp, -1, -1))) {
4137 if (pcp_outfile && pcp_inside_if
4138 && (hp->type == T_CONST
4139 || (hp->type == T_MACRO && hp->value.defn->predefined)))
4140 /* Output a precondition for this macro use. */
4141 fprintf (pcp_outfile, "#define %s\n", hp->name);
4145 if (pcp_outfile && pcp_inside_if) {
4146 /* Output a precondition for this macro use */
4147 U_CHAR *cp = ip->bufp;
4148 fprintf (pcp_outfile, "#undef ");
4149 while (is_idchar[*cp]) /* Ick! */
4150 fputc (*cp++, pcp_outfile);
4151 putc ('\n', pcp_outfile);
4153 while (is_idchar[*ip->bufp])
4155 SKIP_WHITE_SPACE (ip->bufp);
4157 if (*ip->bufp != ')')
4165 error ("`defined' without an identifier");
4169 error ("cccp error: invalid special hash type"); /* time for gdb */
4173 check_expand (op, len);
4174 bcopy (buf, (char *) op->bufp, len);
4181 /* Routines to handle #directives */
4183 /* Handle #include and #import.
4184 This function expects to see "fname" or <fname> on the input. */
4187 do_include (buf, limit, op, keyword)
4188 U_CHAR *buf, *limit;
4190 struct directive *keyword;
4192 U_CHAR *importing = keyword->type == T_IMPORT ? (U_CHAR *) "" : (U_CHAR *) 0;
4193 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4194 static int import_warning = 0;
4195 char *fname; /* Dynamically allocated fname buffer */
4198 char *fbeg, *fend; /* Beginning and end of fname */
4201 struct file_name_list *search_start = include; /* Chain of dirs to search */
4202 struct file_name_list *dsp; /* First in chain, if #include "..." */
4203 struct file_name_list *searchptr = 0;
4206 int f = -3; /* file number */
4207 struct include_file *inc = 0;
4209 int retried = 0; /* Have already tried macro
4210 expanding the include line*/
4211 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4217 if (importing && warn_import && !inhibit_warnings
4218 && !instack[indepth].system_header_p && !import_warning) {
4220 warning ("using `#import' is not recommended");
4221 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4222 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4223 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4224 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4225 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4226 fprintf (stderr, " ... <real contents of file> ...\n");
4227 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4228 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4229 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4230 fprintf (stderr, "when it is equipped with such a conditional.\n");
4236 SKIP_WHITE_SPACE (fin);
4237 /* Discard trailing whitespace so we can easily see
4238 if we have parsed all the significant chars we were given. */
4239 while (limit != fin && is_hor_space[limit[-1]]) limit--;
4240 fbeg = fend = (char *) alloca (limit - fin);
4246 /* Copy the operand text, concatenating the strings. */
4248 while (fin != limit) {
4249 while (fin != limit && *fin != '\"')
4254 /* If not at the end, there had better be another string. */
4255 /* Skip just horiz space, and don't go past limit. */
4256 while (fin != limit && is_hor_space[*fin]) fin++;
4257 if (fin != limit && *fin == '\"')
4264 /* We have "filename". Figure out directory this source
4265 file is coming from and put it on the front of the list. */
4267 /* If -I- was specified, don't search current dir, only spec'd ones. */
4268 if (ignore_srcdir) break;
4270 for (fp = &instack[indepth]; fp >= instack; fp--)
4275 if ((nam = fp->nominal_fname) != NULL) {
4276 /* Found a named file. Figure out dir of the file,
4277 and put it in front of the search list. */
4278 dsp = ((struct file_name_list *)
4279 alloca (sizeof (struct file_name_list) + strlen (nam)));
4280 strcpy (dsp->fname, nam);
4281 simplify_filename (dsp->fname);
4282 nam = base_name (dsp->fname);
4284 /* But for efficiency's sake, do not insert the dir
4285 if it matches the search list's first dir. */
4286 dsp->next = search_start;
4287 if (!search_start || strcmp (dsp->fname, search_start->fname)) {
4289 n = nam - dsp->fname;
4290 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4291 max_include_len = n + INCLUDE_LEN_FUDGE;
4293 dsp[0].got_name_map = 0;
4301 while (fin != limit && *fin != '>')
4303 if (*fin == '>' && fin + 1 == limit) {
4305 /* If -I-, start with the first -I dir after the -I-. */
4306 search_start = first_bracket_include;
4314 * Support '#include xyz' like VAX-C to allow for easy use of all the
4315 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4316 * code from case '<' is repeated here) and generates a warning.
4317 * (Note: macro expansion of `xyz' takes precedence.)
4319 if (retried && isalpha(*(U_CHAR *) (--fbeg))) {
4320 while (fin != limit && (!isspace(*fin)))
4322 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4325 /* If -I-, start with the first -I dir after the -I-. */
4326 search_start = first_bracket_include;
4334 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4337 /* Expand buffer and then remove any newline markers.
4338 We can't just tell expand_to_temp_buffer to omit the markers,
4339 since it would put extra spaces in include file names. */
4342 trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
4344 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4346 while (src != trybuf.bufp) {
4347 switch ((*limit++ = *src++)) {
4356 U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
4357 NULL_PTR, NULL_PTR, NULL_PTR);
4371 /* For #include_next, skip in the search path
4372 past the dir in which the containing file was found. */
4375 for (fp = &instack[indepth]; fp >= instack; fp--)
4376 if (fp->fname != NULL) {
4377 /* fp->dir is null if the containing file was specified
4378 with an absolute file name. In that case, don't skip anything. */
4380 search_start = fp->dir->next;
4386 flen = simplify_filename (fbeg);
4390 error ("empty file name in `#%s'", keyword->name);
4394 /* Allocate this permanently, because it gets stored in the definitions
4396 fname = xmalloc (max_include_len + flen + 1);
4397 /* + 1 above for terminating null. */
4399 system_include_depth += angle_brackets;
4401 /* If specified file name is absolute, just open it. */
4403 if (absolute_filename (fbeg)) {
4404 strcpy (fname, fbeg);
4405 f = open_include_file (fname, NULL_PTR, importing, &inc);
4409 struct bypass_dir *next;
4411 struct file_name_list *searchptr;
4412 } **bypass_slot = 0;
4414 /* Search directory path, trying to open the file.
4415 Copy each filename tried into FNAME. */
4417 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4419 if (searchptr == first_bracket_include) {
4420 /* Go to bypass directory if we know we've seen this file before. */
4421 static struct bypass_dir *bypass_hashtab[INCLUDE_HASHSIZE];
4422 struct bypass_dir *p;
4423 bypass_slot = &bypass_hashtab[hashf ((U_CHAR *) fbeg, flen,
4425 for (p = *bypass_slot; p; p = p->next)
4426 if (!strcmp (fbeg, p->fname)) {
4427 searchptr = p->searchptr;
4433 strcpy (fname, searchptr->fname);
4434 strcat (fname, fbeg);
4436 /* Change this 1/2 Unix 1/2 VMS file specification into a
4437 full VMS file specification */
4438 if (searchptr->fname[0]) {
4439 /* Fix up the filename */
4440 hack_vms_include_specification (fname);
4442 /* This is a normal VMS filespec, so use it unchanged. */
4443 strcpy (fname, fbeg);
4444 /* if it's '#include filename', add the missing .h */
4445 if (index(fname,'.')==NULL) {
4446 strcat (fname, ".h");
4450 f = open_include_file (fname, searchptr, importing, &inc);
4452 if (bypass_slot && searchptr != first_bracket_include) {
4453 /* This is the first time we found this include file,
4454 and we found it after first_bracket_include.
4455 Record its location so that we can bypass to here next time. */
4456 struct bypass_dir *p
4457 = (struct bypass_dir *) xmalloc (sizeof (struct bypass_dir));
4458 p->next = *bypass_slot;
4459 p->fname = fname + strlen (searchptr->fname);
4460 p->searchptr = searchptr;
4466 /* Our VMS hacks can produce invalid filespecs, so don't worry
4467 about errors other than EACCES. */
4468 if (errno == EACCES)
4471 if (errno != ENOENT)
4481 /* The file was already included. */
4483 /* If generating dependencies and -MG was specified, we assume missing
4484 files are leaf files, living in the same directory as the source file
4485 or other similar place; these missing files may be generated from
4486 other files and may not exist yet (eg: y.tab.h). */
4487 } else if (print_deps_missing_files
4488 && (system_include_depth != 0) < print_deps)
4490 /* If it was requested as a system header file,
4491 then assume it belongs in the first place to look for such. */
4495 char *p = (char *) alloca (strlen (search_start->fname)
4496 + strlen (fbeg) + 1);
4497 strcpy (p, search_start->fname);
4499 deps_output (p, ' ');
4504 /* Otherwise, omit the directory, as if the file existed
4505 in the directory with the source. */
4506 deps_output (fbeg, ' ');
4509 /* If -M was specified, and this header file won't be added to the
4510 dependency list, then don't count this as an error, because we can
4511 still produce correct output. Otherwise, we can't produce correct
4512 output, because there may be dependencies we need inside the missing
4513 file, and we don't know what directory this missing file exists in. */
4514 else if (0 < print_deps && print_deps <= (system_include_depth != 0))
4515 warning ("No include path in which to find %s", fbeg);
4517 error_from_errno (fbeg);
4519 error ("No include path in which to find %s", fbeg);
4523 /* Actually process the file. */
4525 pcftry = (char *) alloca (strlen (fname) + 30);
4532 sprintf (pcftry, "%s%d", fname, pcfnum++);
4534 pcf = open (pcftry, O_RDONLY, 0666);
4539 if (fstat (pcf, &s) != 0)
4540 pfatal_with_name (pcftry);
4541 if (! INO_T_EQ (inc->st.st_ino, s.st_ino)
4542 || inc->st.st_dev != s.st_dev)
4544 pcfbuf = check_precompiled (pcf, &s, fname, &pcfbuflimit);
4545 /* Don't need it any more. */
4550 /* Don't need it at all. */
4555 } while (pcf != -1 && !pcfbuf);
4558 /* Actually process the file */
4560 pcfname = xmalloc (strlen (pcftry) + 1);
4561 strcpy (pcfname, pcftry);
4562 pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) pcfbuflimit,
4563 (U_CHAR *) fname, op);
4566 finclude (f, inc, op, is_system_include (fname), searchptr);
4569 system_include_depth -= angle_brackets;
4574 /* Return nonzero if the given FILENAME is an absolute pathname which
4575 designates a file within one of the known "system" include file
4576 directories. We assume here that if the given FILENAME looks like
4577 it is the name of a file which resides either directly in a "system"
4578 include file directory, or within any subdirectory thereof, then the
4579 given file must be a "system" include file. This function tells us
4580 if we should suppress pedantic errors/warnings for the given FILENAME.
4582 The value is 2 if the file is a C-language system header file
4583 for which C++ should (on most systems) assume `extern "C"'. */
4586 is_system_include (filename)
4587 register char *filename;
4589 struct file_name_list *searchptr;
4591 for (searchptr = first_system_include; searchptr;
4592 searchptr = searchptr->next)
4593 if (! strncmp (searchptr->fname, filename, strlen (searchptr->fname)))
4594 return searchptr->c_system_include_path + 1;
4598 /* Yield the non-directory suffix of a file name. */
4606 #if defined (__MSDOS__) || defined (_WIN32)
4607 if (isalpha (s[0]) && s[1] == ':') s += 2;
4610 if ((p = rindex (s, ':'))) s = p + 1; /* Skip device. */
4611 if ((p = rindex (s, ']'))) s = p + 1; /* Skip directory. */
4612 if ((p = rindex (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
4616 if ((p = rindex (s, '/'))) s = p + 1;
4617 #ifdef DIR_SEPARATOR
4618 if ((p = rindex (s, DIR_SEPARATOR))) s = p + 1;
4623 /* Yield nonzero if FILENAME is absolute (i.e. not relative). */
4626 absolute_filename (filename)
4629 #if defined (__MSDOS__) || (defined (_WIN32) && !defined (__CYGWIN32__))
4630 if (isalpha (filename[0]) && filename[1] == ':') filename += 2;
4632 #if defined (__CYGWIN32__)
4633 /* At present, any path that begins with a drive spec is absolute. */
4634 if (isalpha (filename[0]) && filename[1] == ':') return 1;
4636 if (filename[0] == '/') return 1;
4637 #ifdef DIR_SEPARATOR
4638 if (filename[0] == DIR_SEPARATOR) return 1;
4643 /* Remove unnecessary characters from FILENAME in place,
4644 to avoid unnecessary filename aliasing.
4645 Return the length of the resulting string.
4647 Do only the simplifications allowed by Posix.
4648 It is OK to miss simplifications on non-Posix hosts,
4649 since this merely leads to suboptimial results. */
4652 simplify_filename (filename)
4655 register char *from = filename;
4656 register char *to = filename;
4659 /* Remove redundant initial /s. */
4662 if (*++from == '/') {
4663 if (*++from == '/') {
4664 /* 3 or more initial /s are equivalent to 1 /. */
4665 while (*++from == '/')
4668 /* On some hosts // differs from /; Posix allows this. */
4669 static int slashslash_vs_slash;
4670 if (slashslash_vs_slash == 0) {
4672 slashslash_vs_slash = ((stat ("/", &s1) == 0 && stat ("//", &s2) == 0
4673 && INO_T_EQ (s1.st_ino, s2.st_ino)
4674 && s1.st_dev == s2.st_dev)
4677 if (slashslash_vs_slash < 0)
4685 if (from[0] == '.' && from[1] == '/')
4688 /* Copy this component and trailing /, if any. */
4689 while ((*to++ = *from++) != '/') {
4691 /* Trim . component at end of nonempty name. */
4692 to -= filename <= to - 3 && to[-3] == '/' && to[-2] == '.';
4694 /* Trim unnecessary trailing /s. */
4695 while (to0 < --to && to[-1] == '/')
4699 return to - filename;
4704 /* Skip /s after a /. */
4705 while (*from == '/')
4710 /* The file_name_map structure holds a mapping of file names for a
4711 particular directory. This mapping is read from the file named
4712 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4713 map filenames on a file system with severe filename restrictions,
4714 such as DOS. The format of the file name map file is just a series
4715 of lines with two tokens on each line. The first token is the name
4716 to map, and the second token is the actual name to use. */
4718 struct file_name_map
4720 struct file_name_map *map_next;
4725 #define FILE_NAME_MAP_FILE "header.gcc"
4727 /* Read a space delimited string of unlimited length from a stdio
4731 read_filename_string (ch, f)
4739 set = alloc = xmalloc (len + 1);
4743 while ((ch = getc (f)) != EOF && ! is_space[ch])
4745 if (set - alloc == len)
4748 alloc = xrealloc (alloc, len + 1);
4749 set = alloc + len / 2;
4759 /* Read the file name map file for DIRNAME.
4760 If DIRNAME is empty, read the map file for the working directory;
4761 otherwise DIRNAME must end in '/'. */
4763 static struct file_name_map *
4764 read_name_map (dirname)
4767 /* This structure holds a linked list of file name maps, one per
4769 struct file_name_map_list
4771 struct file_name_map_list *map_list_next;
4772 char *map_list_name;
4773 struct file_name_map *map_list_map;
4775 static struct file_name_map_list *map_list;
4776 register struct file_name_map_list *map_list_ptr;
4781 for (map_list_ptr = map_list; map_list_ptr;
4782 map_list_ptr = map_list_ptr->map_list_next)
4783 if (! strcmp (map_list_ptr->map_list_name, dirname))
4784 return map_list_ptr->map_list_map;
4786 map_list_ptr = ((struct file_name_map_list *)
4787 xmalloc (sizeof (struct file_name_map_list)));
4788 map_list_ptr->map_list_name = savestring (dirname);
4789 map_list_ptr->map_list_map = NULL;
4791 dirlen = strlen (dirname);
4792 name = (char *) alloca (dirlen + strlen (FILE_NAME_MAP_FILE) + 1);
4793 strcpy (name, dirname);
4794 strcat (name, FILE_NAME_MAP_FILE);
4795 f = fopen (name, "r");
4797 map_list_ptr->map_list_map = NULL;
4802 while ((ch = getc (f)) != EOF)
4805 struct file_name_map *ptr;
4810 from = read_filename_string (ch, f);
4811 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4813 to = read_filename_string (ch, f);
4815 simplify_filename (from);
4816 tolen = simplify_filename (to);
4818 ptr = ((struct file_name_map *)
4819 xmalloc (sizeof (struct file_name_map)));
4820 ptr->map_from = from;
4822 /* Make the real filename absolute. */
4823 if (absolute_filename (to))
4827 ptr->map_to = xmalloc (dirlen + tolen + 1);
4828 strcpy (ptr->map_to, dirname);
4829 strcat (ptr->map_to, to);
4833 ptr->map_next = map_list_ptr->map_list_map;
4834 map_list_ptr->map_list_map = ptr;
4836 while ((ch = getc (f)) != '\n')
4843 map_list_ptr->map_list_next = map_list;
4844 map_list = map_list_ptr;
4846 return map_list_ptr->map_list_map;
4849 /* Try to open include file FILENAME. SEARCHPTR is the directory
4850 being tried from the include file search path.
4851 IMPORTING is "" if we are importing, null otherwise.
4852 Return -2 if found, either a matching name or a matching inode.
4853 Otherwise, open the file and return a file descriptor if successful
4854 or -1 if unsuccessful.
4855 Unless unsuccessful, put a descriptor of the included file into *PINC.
4856 This function maps filenames on file systems based on information read by
4860 open_include_file (filename, searchptr, importing, pinc)
4862 struct file_name_list *searchptr;
4864 struct include_file **pinc;
4866 char *fname = remap_include_file (filename, searchptr);
4869 /* Look up FNAME in include_hashtab. */
4870 struct include_file **phead = &include_hashtab[hashf ((U_CHAR *) fname,
4873 struct include_file *inc, *head = *phead;
4874 for (inc = head; inc; inc = inc->next)
4875 if (!strcmp (fname, inc->fname))
4879 || ! inc->control_macro
4880 || (inc->control_macro[0] && ! lookup (inc->control_macro, -1, -1))) {
4882 fd = open (fname, O_RDONLY, 0);
4888 /* FNAME was not in include_hashtab; insert a new entry. */
4889 inc = (struct include_file *) xmalloc (sizeof (struct include_file));
4892 inc->control_macro = 0;
4893 inc->deps_output = 0;
4894 if (fstat (fd, &inc->st) != 0)
4895 pfatal_with_name (fname);
4898 /* Look for another file with the same inode and device. */
4899 if (lookup_ino_include (inc)
4900 && inc->control_macro
4901 && (!inc->control_macro[0] || lookup (inc->control_macro, -1, -1))) {
4907 /* For -M, add this file to the dependencies. */
4908 if (! inc->deps_output && (system_include_depth != 0) < print_deps) {
4909 inc->deps_output = 1;
4910 deps_output (fname, ' ');
4913 /* Handle -H option. */
4914 if (print_include_names)
4915 fprintf (stderr, "%*s%s\n", indepth, "", fname);
4919 inc->control_macro = importing;
4925 /* Return the remapped name of the the include file FILENAME.
4926 SEARCHPTR is the directory being tried from the include file path. */
4929 remap_include_file (filename, searchptr)
4931 struct file_name_list *searchptr;
4933 register struct file_name_map *map;
4934 register char *from;
4938 if (! searchptr->got_name_map)
4940 searchptr->name_map = read_name_map (searchptr->fname);
4941 searchptr->got_name_map = 1;
4944 /* Check the mapping for the directory we are using. */
4945 from = filename + strlen (searchptr->fname);
4946 for (map = searchptr->name_map; map; map = map->map_next)
4947 if (! strcmp (map->map_from, from))
4951 from = base_name (filename);
4953 if (from != filename || !searchptr)
4955 /* Try to find a mapping file for the particular directory we are
4956 looking in. Thus #include <sys/types.h> will look up sys/types.h
4957 in /usr/include/header.gcc and look up types.h in
4958 /usr/include/sys/header.gcc. */
4960 char *dir = (char *) alloca (from - filename + 1);
4961 bcopy (filename, dir, from - filename);
4962 dir[from - filename] = '\0';
4964 for (map = read_name_map (dir); map; map = map->map_next)
4965 if (! strcmp (map->map_from, from))
4972 /* Insert INC into the include file table, hashed by device and inode number.
4973 If a file with different name but same dev+ino was already in the table,
4974 return 1 and set INC's control macro to the already-known macro. */
4977 lookup_ino_include (inc)
4978 struct include_file *inc;
4980 int hash = ((unsigned) (inc->st.st_dev + INO_T_HASH (inc->st.st_ino))
4981 % INCLUDE_HASHSIZE);
4982 struct include_file *i = include_ino_hashtab[hash];
4984 include_ino_hashtab[hash] = inc;
4986 for (; i; i = i->next_ino)
4987 if (INO_T_EQ (inc->st.st_ino, i->st.st_ino)
4988 && inc->st.st_dev == i->st.st_dev) {
4989 inc->control_macro = i->control_macro;
4996 /* Process file descriptor F, which corresponds to include file INC,
4998 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4999 "system" include directories (as decided by the `is_system_include'
5001 DIRPTR is the link in the dir path through which this file was found,
5002 or 0 if the file name was absolute. */
5005 finclude (f, inc, op, system_header_p, dirptr)
5007 struct include_file *inc;
5009 int system_header_p;
5010 struct file_name_list *dirptr;
5012 char *fname = inc->fname;
5014 FILE_BUF *fp; /* For input stack frame */
5015 int missing_newline = 0;
5017 CHECK_DEPTH (return;);
5019 fp = &instack[indepth + 1];
5020 bzero ((char *) fp, sizeof (FILE_BUF));
5021 fp->nominal_fname = fp->fname = fname;
5025 fp->if_stack = if_stack;
5026 fp->system_header_p = system_header_p;
5029 if (S_ISREG (inc->st.st_mode)) {
5030 fp->buf = (U_CHAR *) xmalloc (inc->st.st_size + 2);
5033 /* Read the file contents, knowing that inc->st.st_size is an upper bound
5034 on the number of bytes we can read. */
5035 fp->length = safe_read (f, (char *) fp->buf, inc->st.st_size);
5036 if (fp->length < 0) goto nope;
5038 else if (S_ISDIR (inc->st.st_mode)) {
5039 error ("directory `%s' specified in #include", fname);
5043 /* Cannot count its file size before reading.
5044 First read the entire file into heap and
5045 copy them into buffer on stack. */
5050 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
5053 i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size);
5055 goto nope; /* error! */
5057 if (st_size != bsize)
5058 break; /* End of file */
5060 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
5063 fp->length = st_size;
5066 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
5067 /* Backslash-newline at end is not good enough. */
5068 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
5069 fp->buf[fp->length++] = '\n';
5070 missing_newline = 1;
5072 fp->buf[fp->length] = '\0';
5074 /* Close descriptor now, so nesting does not use lots of descriptors. */
5077 /* Must do this before calling trigraph_pcp, so that the correct file name
5078 will be printed in warning messages. */
5081 input_file_stack_tick++;
5086 output_line_directive (fp, op, 0, enter_file);
5089 if (missing_newline)
5092 if (pedantic && missing_newline)
5093 pedwarn ("file does not end in newline");
5096 input_file_stack_tick++;
5097 output_line_directive (&instack[indepth], op, 0, leave_file);
5103 perror_with_name (fname);
5108 /* Record that inclusion of the include file INC
5109 should be controlled by the macro named MACRO_NAME.
5110 This means that trying to include the file again
5111 will do something if that macro is defined. */
5114 record_control_macro (inc, macro_name)
5115 struct include_file *inc;
5118 if (!inc->control_macro || inc->control_macro[0])
5119 inc->control_macro = macro_name;
5122 /* Load the specified precompiled header into core, and verify its
5123 preconditions. PCF indicates the file descriptor to read, which must
5124 be a regular file. *ST is its file status.
5125 FNAME indicates the file name of the original header.
5126 *LIMIT will be set to an address one past the end of the file.
5127 If the preconditions of the file are not satisfied, the buffer is
5128 freed and we return 0. If the preconditions are satisfied, return
5129 the address of the buffer following the preconditions. The buffer, in
5130 this case, should never be freed because various pieces of it will
5131 be referred to until all precompiled strings are output at the end of
5135 check_precompiled (pcf, st, fname, limit)
5148 if (S_ISREG (st->st_mode))
5150 buf = xmalloc (st->st_size + 2);
5151 length = safe_read (pcf, buf, st->st_size);
5158 if (length > 0 && buf[length-1] != '\n')
5159 buf[length++] = '\n';
5162 *limit = buf + length;
5164 /* File is in core. Check the preconditions. */
5165 if (!check_preconditions (buf))
5167 for (cp = buf; *cp; cp++)
5170 fprintf (stderr, "Using preinclude %s\n", fname);
5176 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5182 /* PREC (null terminated) points to the preconditions of a
5183 precompiled header. These are a series of #define and #undef
5184 lines which must match the current contents of the hash
5188 check_preconditions (prec)
5195 lineend = index (prec, '\n');
5197 if (*prec++ != '#') {
5198 error ("Bad format encountered while reading precompiled file");
5201 if (!strncmp (prec, "define", 6)) {
5205 mdef = create_definition ((U_CHAR *) prec, (U_CHAR *) lineend, NULL_PTR);
5210 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5211 || (hp->type != T_MACRO && hp->type != T_CONST)
5212 || (hp->type == T_MACRO
5213 && !compare_defs (mdef.defn, hp->value.defn)
5214 && (mdef.defn->length != 2
5215 || mdef.defn->expansion[0] != '\n'
5216 || mdef.defn->expansion[1] != ' ')))
5218 } else if (!strncmp (prec, "undef", 5)) {
5223 while (is_hor_space[(U_CHAR) *prec])
5226 while (is_idchar[(U_CHAR) *prec])
5230 if (lookup ((U_CHAR *) name, len, -1))
5233 error ("Bad format encountered while reading precompiled file");
5238 /* They all passed successfully */
5242 /* Process the main body of a precompiled file. BUF points to the
5243 string section of the file, following the preconditions. LIMIT is one
5244 character past the end. NAME is the name of the file being read
5245 in. OP is the main output buffer. */
5248 pcfinclude (buf, limit, name, op)
5249 U_CHAR *buf, *limit, *name;
5256 /* First in the file comes 4 bytes indicating the number of strings, */
5257 /* in network byte order. (MSB first). */
5259 nstrings = (nstrings << 8) | *cp++;
5260 nstrings = (nstrings << 8) | *cp++;
5261 nstrings = (nstrings << 8) | *cp++;
5263 /* Looping over each string... */
5264 while (nstrings--) {
5265 U_CHAR *string_start;
5266 U_CHAR *endofthiskey;
5270 /* Each string starts with a STRINGDEF structure (str), followed */
5271 /* by the text of the string (string_start) */
5273 /* First skip to a longword boundary */
5274 /* ??? Why a 4-byte boundary? On all machines? */
5275 /* NOTE: This works correctly even if HOST_WIDE_INT
5276 is narrower than a pointer.
5277 Do not try risky measures here to get another type to use!
5278 Do not include stddef.h--it will fail! */
5279 if ((HOST_WIDE_INT) cp & 3)
5280 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5282 /* Now get the string. */
5283 str = (STRINGDEF *) (GENERIC_PTR) cp;
5284 string_start = cp += sizeof (STRINGDEF);
5286 for (; *cp; cp++) /* skip the string */
5289 /* We need to macro expand the string here to ensure that the
5290 proper definition environment is in place. If it were only
5291 expanded when we find out it is needed, macros necessary for
5292 its proper expansion might have had their definitions changed. */
5293 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5294 /* Lineno is already set in the precompiled file */
5295 str->contents = tmpbuf.buf;
5296 str->len = tmpbuf.length;
5298 str->filename = name;
5299 str->output_mark = outbuf.bufp - outbuf.buf;
5302 *stringlist_tailp = str;
5303 stringlist_tailp = &str->chain;
5305 /* Next comes a fourbyte number indicating the number of keys
5308 nkeys = (nkeys << 8) | *cp++;
5309 nkeys = (nkeys << 8) | *cp++;
5310 nkeys = (nkeys << 8) | *cp++;
5312 /* If this number is -1, then the string is mandatory. */
5316 /* Otherwise, for each key, */
5317 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5318 KEYDEF *kp = (KEYDEF *) (GENERIC_PTR) cp;
5321 /* It starts with a KEYDEF structure */
5322 cp += sizeof (KEYDEF);
5324 /* Find the end of the key. At the end of this for loop we
5325 advance CP to the start of the next key using this variable. */
5326 endofthiskey = cp + strlen ((char *) cp);
5329 /* Expand the key, and enter it into the hash table. */
5330 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5331 tmpbuf.bufp = tmpbuf.buf;
5333 while (is_hor_space[*tmpbuf.bufp])
5335 if (!is_idstart[*tmpbuf.bufp]
5336 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5341 hp = lookup (tmpbuf.bufp, -1, -1);
5344 install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
5346 else if (hp->type == T_PCSTRING) {
5347 kp->chain = hp->value.keydef;
5348 hp->value.keydef = kp;
5354 /* This output_line_directive serves to switch us back to the current
5355 input file in case some of these strings get output (which will
5356 result in line directives for the header file being output). */
5357 output_line_directive (&instack[indepth], op, 0, enter_file);
5360 /* Called from rescan when it hits a key for strings. Mark them all
5361 used and clean up. */
5369 for (kp = hp->value.keydef; kp; kp = kp->chain)
5370 kp->str->writeflag = 1;
5374 /* Write the output, interspersing precompiled strings in their
5375 appropriate places. */
5380 STRINGDEF *next_string;
5381 U_CHAR *cur_buf_loc;
5382 int line_directive_len = 80;
5383 char *line_directive = xmalloc (line_directive_len);
5386 /* In each run through the loop, either cur_buf_loc ==
5387 next_string_loc, in which case we print a series of strings, or
5388 it is less than next_string_loc, in which case we write some of
5390 cur_buf_loc = outbuf.buf;
5391 next_string = stringlist;
5393 while (cur_buf_loc < outbuf.bufp || next_string) {
5395 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5396 if (next_string->writeflag) {
5397 len = 4 * strlen ((char *) next_string->filename) + 32;
5398 while (len > line_directive_len)
5399 line_directive = xrealloc (line_directive,
5400 line_directive_len *= 2);
5401 sprintf (line_directive, "\n# %d ", next_string->lineno);
5402 strcpy (quote_string (line_directive + strlen (line_directive),
5403 (char *) next_string->filename),
5405 safe_write (fileno (stdout), line_directive, strlen (line_directive));
5406 safe_write (fileno (stdout),
5407 (char *) next_string->contents, next_string->len);
5409 next_string = next_string->chain;
5413 ? (next_string->output_mark
5414 - (cur_buf_loc - outbuf.buf))
5415 : outbuf.bufp - cur_buf_loc);
5417 safe_write (fileno (stdout), (char *) cur_buf_loc, len);
5421 free (line_directive);
5424 /* Pass a directive through to the output file.
5425 BUF points to the contents of the directive, as a contiguous string.
5426 LIMIT points to the first character past the end of the directive.
5427 KEYWORD is the keyword-table entry for the directive. */
5430 pass_thru_directive (buf, limit, op, keyword)
5431 U_CHAR *buf, *limit;
5433 struct directive *keyword;
5435 register unsigned keyword_length = keyword->length;
5437 check_expand (op, 1 + keyword_length + (limit - buf));
5439 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5440 op->bufp += keyword_length;
5441 if (limit != buf && buf[0] != ' ')
5443 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5444 op->bufp += (limit - buf);
5447 /* Count the line we have just made in the output,
5448 to get in sync properly. */
5453 /* The arglist structure is built by do_define to tell
5454 collect_definition where the argument names begin. That
5455 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5456 would contain pointers to the strings x, y, and z.
5457 Collect_definition would then build a DEFINITION node,
5458 with reflist nodes pointing to the places x, y, and z had
5459 appeared. So the arglist is just convenience data passed
5460 between these two routines. It is not kept around after
5461 the current #define has been processed and entered into the
5465 struct arglist *next;
5472 /* Create a DEFINITION node from a #define directive. Arguments are
5473 as for do_define. */
5476 create_definition (buf, limit, op)
5477 U_CHAR *buf, *limit;
5480 U_CHAR *bp; /* temp ptr into input buffer */
5481 U_CHAR *symname; /* remember where symbol name starts */
5482 int sym_length; /* and how long it is */
5483 int line = instack[indepth].lineno;
5484 char *file = instack[indepth].nominal_fname;
5488 int arglengths = 0; /* Accumulate lengths of arg names
5489 plus number of args. */
5494 while (is_hor_space[*bp])
5497 symname = bp; /* remember where it starts */
5498 sym_length = check_macro_name (bp, "macro");
5501 /* Lossage will occur if identifiers or control keywords are broken
5502 across lines using backslash. This is not the right place to take
5506 struct arglist *arg_ptrs = NULL;
5509 bp++; /* skip '(' */
5510 SKIP_WHITE_SPACE (bp);
5512 /* Loop over macro argument names. */
5513 while (*bp != ')') {
5514 struct arglist *temp;
5516 temp = (struct arglist *) alloca (sizeof (struct arglist));
5518 temp->next = arg_ptrs;
5519 temp->argno = argno++;
5520 temp->rest_args = 0;
5524 pedwarn ("another parameter follows `%s'",
5527 if (!is_idstart[*bp])
5528 pedwarn ("invalid character in macro parameter name");
5530 /* Find the end of the arg name. */
5531 while (is_idchar[*bp]) {
5533 /* do we have a "special" rest-args extension here? */
5534 if (limit - bp > REST_EXTENSION_LENGTH &&
5535 bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5537 temp->rest_args = 1;
5541 temp->length = bp - temp->name;
5543 bp += REST_EXTENSION_LENGTH;
5544 arglengths += temp->length + 2;
5545 SKIP_WHITE_SPACE (bp);
5546 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5547 error ("badly punctuated parameter list in `#define'");
5552 SKIP_WHITE_SPACE (bp);
5553 /* A comma at this point can only be followed by an identifier. */
5554 if (!is_idstart[*bp]) {
5555 error ("badly punctuated parameter list in `#define'");
5560 error ("unterminated parameter list in `#define'");
5564 struct arglist *otemp;
5566 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5567 if (temp->length == otemp->length &&
5568 bcmp (temp->name, otemp->name, temp->length) == 0) {
5569 error ("duplicate argument name `%.*s' in `#define'",
5570 temp->length, temp->name);
5576 ++bp; /* skip paren */
5577 SKIP_WHITE_SPACE (bp);
5578 /* now everything from bp before limit is the definition. */
5579 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5580 defn->rest_args = rest_args;
5582 /* Now set defn->args.argnames to the result of concatenating
5583 the argument names in reverse order
5584 with comma-space between them. */
5585 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5587 struct arglist *temp;
5589 for (temp = arg_ptrs; temp; temp = temp->next) {
5590 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5592 if (temp->next != 0) {
5593 defn->args.argnames[i++] = ',';
5594 defn->args.argnames[i++] = ' ';
5597 defn->args.argnames[i] = 0;
5600 /* Simple expansion or empty definition. */
5604 if (is_hor_space[*bp]) {
5606 SKIP_WHITE_SPACE (bp);
5607 } else if (sym_length) {
5609 case '!': case '"': case '#': case '%': case '&': case '\'':
5610 case ')': case '*': case '+': case ',': case '-': case '.':
5611 case '/': case ':': case ';': case '<': case '=': case '>':
5612 case '?': case '[': case '\\': case ']': case '^': case '{':
5613 case '|': case '}': case '~':
5614 warning ("missing white space after `#define %.*s'",
5615 sym_length, symname);
5619 pedwarn ("missing white space after `#define %.*s'",
5620 sym_length, symname);
5625 /* Now everything from bp before limit is the definition. */
5626 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5627 defn->args.argnames = (U_CHAR *) "";
5633 /* OP is null if this is a predefinition */
5634 defn->predefined = !op;
5636 mdef.symnam = symname;
5637 mdef.symlen = sym_length;
5646 /* Process a #define directive.
5647 BUF points to the contents of the #define directive, as a contiguous string.
5648 LIMIT points to the first character past the end of the definition.
5649 KEYWORD is the keyword-table entry for #define. */
5652 do_define (buf, limit, op, keyword)
5653 U_CHAR *buf, *limit;
5655 struct directive *keyword;
5660 /* If this is a precompiler run (with -pcp) pass thru #define directives. */
5661 if (pcp_outfile && op)
5662 pass_thru_directive (buf, limit, op, keyword);
5664 mdef = create_definition (buf, limit, op);
5668 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5672 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5674 /* Redefining a precompiled key is ok. */
5675 if (hp->type == T_PCSTRING)
5677 /* Redefining a macro is ok if the definitions are the same. */
5678 else if (hp->type == T_MACRO)
5679 ok = ! compare_defs (mdef.defn, hp->value.defn);
5680 /* Redefining a constant is ok with -D. */
5681 else if (hp->type == T_CONST)
5682 ok = ! done_initializing;
5683 /* Print the warning if it's not ok. */
5685 /* If we are passing through #define and #undef directives, do
5686 that for this re-definition now. */
5687 if (debug_output && op)
5688 pass_thru_directive (buf, limit, op, keyword);
5690 pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam);
5691 if (hp->type == T_MACRO)
5692 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5693 "this is the location of the previous definition");
5695 /* Replace the old definition. */
5697 hp->value.defn = mdef.defn;
5699 /* If we are passing through #define and #undef directives, do
5700 that for this new definition now. */
5701 if (debug_output && op)
5702 pass_thru_directive (buf, limit, op, keyword);
5703 install (mdef.symnam, mdef.symlen, T_MACRO,
5704 (char *) mdef.defn, hashcode);
5715 /* Check a purported macro name SYMNAME, and yield its length.
5716 USAGE is the kind of name this is intended for. */
5719 check_macro_name (symname, usage)
5726 for (p = symname; is_idchar[*p]; p++)
5728 sym_length = p - symname;
5729 if (sym_length == 0)
5730 error ("invalid %s name", usage);
5731 else if (!is_idstart[*symname]
5732 || (sym_length == 7 && ! bcmp (symname, "defined", 7)))
5733 error ("invalid %s name `%.*s'", usage, sym_length, symname);
5737 /* Return zero if two DEFINITIONs are isomorphic. */
5740 compare_defs (d1, d2)
5741 DEFINITION *d1, *d2;
5743 register struct reflist *a1, *a2;
5744 register U_CHAR *p1 = d1->expansion;
5745 register U_CHAR *p2 = d2->expansion;
5748 if (d1->nargs != d2->nargs)
5750 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5752 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5753 a1 = a1->next, a2 = a2->next) {
5754 if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars))
5755 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5756 || a1->argno != a2->argno
5757 || a1->stringify != a2->stringify
5758 || a1->raw_before != a2->raw_before
5759 || a1->raw_after != a2->raw_after)
5767 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5768 p2, d2->length - (p2 - d2->expansion), 1))
5773 /* Return 1 if two parts of two macro definitions are effectively different.
5774 One of the parts starts at BEG1 and has LEN1 chars;
5775 the other has LEN2 chars at BEG2.
5776 Any sequence of whitespace matches any other sequence of whitespace.
5777 FIRST means these parts are the first of a macro definition;
5778 so ignore leading whitespace entirely.
5779 LAST means these parts are the last of a macro definition;
5780 so ignore trailing whitespace entirely. */
5783 comp_def_part (first, beg1, len1, beg2, len2, last)
5785 U_CHAR *beg1, *beg2;
5789 register U_CHAR *end1 = beg1 + len1;
5790 register U_CHAR *end2 = beg2 + len2;
5792 while (beg1 != end1 && is_space[*beg1]) beg1++;
5793 while (beg2 != end2 && is_space[*beg2]) beg2++;
5796 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5797 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5799 while (beg1 != end1 && beg2 != end2) {
5800 if (is_space[*beg1] && is_space[*beg2]) {
5801 while (beg1 != end1 && is_space[*beg1]) beg1++;
5802 while (beg2 != end2 && is_space[*beg2]) beg2++;
5803 } else if (*beg1 == *beg2) {
5807 return (beg1 != end1) || (beg2 != end2);
5810 /* Read a replacement list for a macro with parameters.
5811 Build the DEFINITION structure.
5812 Reads characters of text starting at BUF until END.
5813 ARGLIST specifies the formal parameters to look for
5814 in the text of the definition; NARGS is the number of args
5815 in that list, or -1 for a macro name that wants no argument list.
5816 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5817 and NAMELEN is its length in characters.
5819 Note that comments, backslash-newlines, and leading white space
5820 have already been deleted from the argument. */
5822 /* If there is no trailing whitespace, a Newline Space is added at the end
5823 to prevent concatenation that would be contrary to the standard. */
5826 collect_expansion (buf, end, nargs, arglist)
5829 struct arglist *arglist;
5832 register U_CHAR *p, *limit, *lastp, *exp_p;
5833 struct reflist *endpat = NULL;
5834 /* Pointer to first nonspace after last ## seen. */
5836 /* Pointer to first nonspace after last single-# seen. */
5837 U_CHAR *stringify = 0;
5838 /* How those tokens were spelled. */
5839 enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
5840 enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
5842 int expected_delimiter = '\0';
5844 /* Scan thru the replacement list, ignoring comments and quoted
5845 strings, picking up on the macro calls. It does a linear search
5846 thru the arg list on every potential symbol. Profiling might say
5847 that something smarter should happen. */
5852 /* Find the beginning of the trailing whitespace. */
5855 while (p < limit && is_space[limit[-1]]) limit--;
5857 /* Allocate space for the text in the macro definition.
5858 Each input char may or may not need 1 byte,
5859 so this is an upper bound.
5860 The extra 3 are for invented trailing newline-marker and final null. */
5861 maxsize = (sizeof (DEFINITION)
5863 defn = (DEFINITION *) xcalloc (1, maxsize);
5865 defn->nargs = nargs;
5866 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5871 : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
5872 error ("`##' at start of macro definition");
5873 p += p[0] == '#' ? 2 : 4;
5876 /* Process the main body of the definition. */
5878 int skipped_arg = 0;
5879 register U_CHAR c = *p++;
5887 if (expected_delimiter != '\0') {
5888 if (c == expected_delimiter)
5889 expected_delimiter = '\0';
5891 expected_delimiter = c;
5895 if (p < limit && expected_delimiter) {
5896 /* In a string, backslash goes through
5897 and makes next char ordinary. */
5903 if (!expected_delimiter && *p == ':') {
5904 /* %: is not a digraph if preceded by an odd number of '<'s. */
5906 while (buf < p0 && p0[-1] == '<')
5909 /* Treat %:%: as ## and %: as #. */
5910 if (p[1] == '%' && p[2] == ':') {
5912 goto sharp_sharp_token;
5923 /* # is ordinary inside a string. */
5924 if (expected_delimiter)
5928 /* ##: concatenate preceding and following tokens. */
5929 /* Take out the first #, discard preceding whitespace. */
5931 while (exp_p > lastp && is_hor_space[exp_p[-1]])
5933 /* Skip the second #. */
5935 concat_sharp_token_type = c;
5936 if (is_hor_space[*p]) {
5937 concat_sharp_token_type = c + 1;
5939 SKIP_WHITE_SPACE (p);
5943 error ("`##' at end of macro definition");
5944 } else if (nargs >= 0) {
5945 /* Single #: stringify following argument ref.
5946 Don't leave the # in the expansion. */
5949 stringify_sharp_token_type = c;
5950 if (is_hor_space[*p]) {
5951 stringify_sharp_token_type = c + 1;
5953 SKIP_WHITE_SPACE (p);
5955 if (! is_idstart[*p] || nargs == 0)
5956 error ("`#' operator is not followed by a macro argument name");
5963 /* In -traditional mode, recognize arguments inside strings and
5964 and character constants, and ignore special properties of #.
5965 Arguments inside strings are considered "stringified", but no
5966 extra quote marks are supplied. */
5970 if (expected_delimiter != '\0') {
5971 if (c == expected_delimiter)
5972 expected_delimiter = '\0';
5974 expected_delimiter = c;
5978 /* Backslash quotes delimiters and itself, but not macro args. */
5979 if (expected_delimiter != 0 && p < limit
5980 && (*p == expected_delimiter || *p == '\\')) {
5987 if (expected_delimiter != '\0') /* No comments inside strings. */
5990 /* If we find a comment that wasn't removed by handle_directive,
5991 this must be -traditional. So replace the comment with
5994 while (++p < limit) {
5995 if (p[0] == '*' && p[1] == '/') {
6001 /* Mark this as a concatenation-point, as if it had been ##. */
6009 /* Handle the start of a symbol. */
6010 if (is_idchar[c] && nargs > 0) {
6011 U_CHAR *id_beg = p - 1;
6015 while (p != limit && is_idchar[*p]) p++;
6016 id_len = p - id_beg;
6018 if (is_idstart[c]) {
6019 register struct arglist *arg;
6021 for (arg = arglist; arg != NULL; arg = arg->next) {
6022 struct reflist *tpat;
6024 if (arg->name[0] == c
6025 && arg->length == id_len
6026 && bcmp (arg->name, id_beg, id_len) == 0) {
6027 enum sharp_token_type tpat_stringify;
6028 if (expected_delimiter) {
6029 if (warn_stringify) {
6031 warning ("macro argument `%.*s' is stringified.",
6034 warning ("macro arg `%.*s' would be stringified with -traditional.",
6038 /* If ANSI, don't actually substitute inside a string. */
6041 tpat_stringify = SHARP_TOKEN;
6044 = (stringify == id_beg
6045 ? stringify_sharp_token_type : NO_SHARP_TOKEN);
6047 /* make a pat node for this arg and append it to the end of
6049 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
6052 = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
6053 tpat->raw_after = NO_SHARP_TOKEN;
6054 tpat->rest_args = arg->rest_args;
6055 tpat->stringify = tpat_stringify;
6058 defn->pattern = tpat;
6060 endpat->next = tpat;
6063 tpat->argno = arg->argno;
6064 tpat->nchars = exp_p - lastp;
6066 register U_CHAR *p1 = p;
6067 SKIP_WHITE_SPACE (p1);
6070 : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
6071 tpat->raw_after = p1[0] + (p != p1);
6073 lastp = exp_p; /* place to start copying from next time */
6080 /* If this was not a macro arg, copy it into the expansion. */
6081 if (! skipped_arg) {
6082 register U_CHAR *lim1 = p;
6086 if (stringify == id_beg)
6087 error ("`#' operator should be followed by a macro argument name");
6092 if (!traditional && expected_delimiter == 0) {
6093 /* If ANSI, put in a newline-space marker to prevent token pasting.
6094 But not if "inside a string" (which in ANSI mode happens only for
6102 defn->length = exp_p - defn->expansion;
6104 /* Crash now if we overrun the allocated size. */
6105 if (defn->length + 1 > maxsize)
6109 /* This isn't worth the time it takes. */
6110 /* give back excess storage */
6111 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
6118 do_assert (buf, limit, op, keyword)
6119 U_CHAR *buf, *limit;
6121 struct directive *keyword;
6123 U_CHAR *bp; /* temp ptr into input buffer */
6124 U_CHAR *symname; /* remember where symbol name starts */
6125 int sym_length; /* and how long it is */
6126 struct arglist *tokens = NULL;
6128 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6129 pedwarn ("ANSI C does not allow `#assert'");
6133 while (is_hor_space[*bp])
6136 symname = bp; /* remember where it starts */
6137 sym_length = check_macro_name (bp, "assertion");
6139 /* #define doesn't do this, but we should. */
6140 SKIP_WHITE_SPACE (bp);
6142 /* Lossage will occur if identifiers or control tokens are broken
6143 across lines using backslash. This is not the right place to take
6147 error ("missing token-sequence in `#assert'");
6154 bp++; /* skip '(' */
6155 SKIP_WHITE_SPACE (bp);
6157 tokens = read_token_list (&bp, limit, &error_flag);
6161 error ("empty token-sequence in `#assert'");
6165 ++bp; /* skip paren */
6166 SKIP_WHITE_SPACE (bp);
6169 /* If this name isn't already an assertion name, make it one.
6170 Error if it was already in use in some other way. */
6173 ASSERTION_HASHNODE *hp;
6174 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6175 struct tokenlist_list *value
6176 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
6178 hp = assertion_lookup (symname, sym_length, hashcode);
6180 if (sym_length == 7 && ! bcmp (symname, "defined", 7))
6181 error ("`defined' redefined as assertion");
6182 hp = assertion_install (symname, sym_length, hashcode);
6185 /* Add the spec'd token-sequence to the list of such. */
6186 value->tokens = tokens;
6187 value->next = hp->value;
6195 do_unassert (buf, limit, op, keyword)
6196 U_CHAR *buf, *limit;
6198 struct directive *keyword;
6200 U_CHAR *bp; /* temp ptr into input buffer */
6201 U_CHAR *symname; /* remember where symbol name starts */
6202 int sym_length; /* and how long it is */
6204 struct arglist *tokens = NULL;
6205 int tokens_specified = 0;
6207 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6208 pedwarn ("ANSI C does not allow `#unassert'");
6212 while (is_hor_space[*bp])
6215 symname = bp; /* remember where it starts */
6216 sym_length = check_macro_name (bp, "assertion");
6218 /* #define doesn't do this, but we should. */
6219 SKIP_WHITE_SPACE (bp);
6221 /* Lossage will occur if identifiers or control tokens are broken
6222 across lines using backslash. This is not the right place to take
6228 bp++; /* skip '(' */
6229 SKIP_WHITE_SPACE (bp);
6231 tokens = read_token_list (&bp, limit, &error_flag);
6235 error ("empty token list in `#unassert'");
6239 tokens_specified = 1;
6241 ++bp; /* skip paren */
6242 SKIP_WHITE_SPACE (bp);
6246 ASSERTION_HASHNODE *hp;
6247 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6248 struct tokenlist_list *tail, *prev;
6250 hp = assertion_lookup (symname, sym_length, hashcode);
6254 /* If no token list was specified, then eliminate this assertion
6256 if (! tokens_specified) {
6257 struct tokenlist_list *next;
6258 for (tail = hp->value; tail; tail = next) {
6260 free_token_list (tail->tokens);
6263 delete_assertion (hp);
6265 /* If a list of tokens was given, then delete any matching list. */
6270 struct tokenlist_list *next = tail->next;
6271 if (compare_token_lists (tail->tokens, tokens)) {
6275 hp->value = tail->next;
6276 free_token_list (tail->tokens);
6289 /* Test whether there is an assertion named NAME
6290 and optionally whether it has an asserted token list TOKENS.
6291 NAME is not null terminated; its length is SYM_LENGTH.
6292 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6295 check_assertion (name, sym_length, tokens_specified, tokens)
6298 int tokens_specified;
6299 struct arglist *tokens;
6301 ASSERTION_HASHNODE *hp;
6302 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6304 if (pedantic && !instack[indepth].system_header_p)
6305 pedwarn ("ANSI C does not allow testing assertions");
6307 hp = assertion_lookup (name, sym_length, hashcode);
6309 /* It is not an assertion; just return false. */
6312 /* If no token list was specified, then value is 1. */
6313 if (! tokens_specified)
6317 struct tokenlist_list *tail;
6321 /* If a list of tokens was given,
6322 then succeed if the assertion records a matching list. */
6325 if (compare_token_lists (tail->tokens, tokens))
6330 /* Fail if the assertion has no matching list. */
6335 /* Compare two lists of tokens for equality including order of tokens. */
6338 compare_token_lists (l1, l2)
6339 struct arglist *l1, *l2;
6342 if (l1->length != l2->length)
6344 if (bcmp (l1->name, l2->name, l1->length))
6350 /* Succeed if both lists end at the same time. */
6354 /* Read a space-separated list of tokens ending in a close parenthesis.
6355 Return a list of strings, in the order they were written.
6356 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6357 Parse the text starting at *BPP, and update *BPP.
6358 Don't parse beyond LIMIT. */
6360 static struct arglist *
6361 read_token_list (bpp, limit, error_flag)
6366 struct arglist *token_ptrs = 0;
6372 /* Loop over the assertion value tokens. */
6374 struct arglist *temp;
6378 /* Find the end of the token. */
6382 } else if (*bp == ')') {
6387 } else if (*bp == '"' || *bp == '\'')
6388 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6390 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6391 && *bp != '"' && *bp != '\'' && bp != limit)
6394 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6395 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6396 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6397 temp->name[bp - beg] = 0;
6398 temp->next = token_ptrs;
6400 temp->length = bp - beg;
6402 SKIP_WHITE_SPACE (bp);
6405 error ("unterminated token sequence in `#assert' or `#unassert'");
6412 /* We accumulated the names in reverse order.
6413 Now reverse them to get the proper order. */
6415 register struct arglist *prev = 0, *this, *next;
6416 for (this = token_ptrs; this; this = next) {
6426 free_token_list (tokens)
6427 struct arglist *tokens;
6430 struct arglist *next = tokens->next;
6431 free (tokens->name);
6437 /* Install a name in the assertion hash table.
6439 If LEN is >= 0, it is the length of the name.
6440 Otherwise, compute the length by scanning the entire name.
6442 If HASH is >= 0, it is the precomputed hash code.
6443 Otherwise, compute the hash code. */
6445 static ASSERTION_HASHNODE *
6446 assertion_install (name, len, hash)
6451 register ASSERTION_HASHNODE *hp;
6452 register int i, bucket;
6453 register U_CHAR *p, *q;
6455 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6456 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6458 hp->bucket_hdr = &assertion_hashtab[bucket];
6459 hp->next = assertion_hashtab[bucket];
6460 assertion_hashtab[bucket] = hp;
6462 if (hp->next != NULL)
6463 hp->next->prev = hp;
6466 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6469 for (i = 0; i < len; i++)
6475 /* Find the most recent hash node for name name (ending with first
6476 non-identifier char) installed by install
6478 If LEN is >= 0, it is the length of the name.
6479 Otherwise, compute the length by scanning the entire name.
6481 If HASH is >= 0, it is the precomputed hash code.
6482 Otherwise, compute the hash code. */
6484 static ASSERTION_HASHNODE *
6485 assertion_lookup (name, len, hash)
6490 register ASSERTION_HASHNODE *bucket;
6492 bucket = assertion_hashtab[hash];
6494 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
6496 bucket = bucket->next;
6502 delete_assertion (hp)
6503 ASSERTION_HASHNODE *hp;
6506 if (hp->prev != NULL)
6507 hp->prev->next = hp->next;
6508 if (hp->next != NULL)
6509 hp->next->prev = hp->prev;
6511 /* Make sure that the bucket chain header that the deleted guy was
6512 on points to the right thing afterwards. */
6513 if (hp == *hp->bucket_hdr)
6514 *hp->bucket_hdr = hp->next;
6520 * interpret #line directive. Remembers previously seen fnames
6521 * in its very own hash table.
6523 #define FNAME_HASHSIZE 37
6526 do_line (buf, limit, op, keyword)
6527 U_CHAR *buf, *limit;
6529 struct directive *keyword;
6531 register U_CHAR *bp;
6532 FILE_BUF *ip = &instack[indepth];
6535 enum file_change_code file_change = same_file;
6537 /* Expand any macros. */
6538 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6540 /* Point to macroexpanded line, which is null-terminated now. */
6542 SKIP_WHITE_SPACE (bp);
6544 if (!isdigit (*bp)) {
6545 error ("invalid format `#line' directive");
6549 /* The Newline at the end of this line remains to be processed.
6550 To put the next line at the specified line number,
6551 we must store a line number now that is one less. */
6552 new_lineno = atoi ((char *) bp) - 1;
6554 /* NEW_LINENO is one less than the actual line number here. */
6555 if (pedantic && new_lineno < 0)
6556 pedwarn ("line number out of range in `#line' directive");
6558 /* skip over the line number. */
6559 while (isdigit (*bp))
6562 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6563 if (*bp && !is_space[*bp]) {
6564 error ("invalid format `#line' directive");
6569 SKIP_WHITE_SPACE (bp);
6572 static HASHNODE *fname_table[FNAME_HASHSIZE];
6573 HASHNODE *hp, **hash_bucket;
6579 /* Turn the file name, which is a character string literal,
6580 into a null-terminated string. Do this in place. */
6583 switch ((*p++ = *bp++)) {
6585 error ("invalid format `#line' directive");
6590 char *bpc = (char *) bp;
6591 HOST_WIDE_INT c = parse_escape (&bpc, (HOST_WIDE_INT) (U_CHAR) (-1));
6592 bp = (U_CHAR *) bpc;
6605 fname_length = p - fname;
6607 SKIP_WHITE_SPACE (bp);
6610 pedwarn ("garbage at end of `#line' directive");
6612 file_change = enter_file;
6613 else if (*bp == '2')
6614 file_change = leave_file;
6615 else if (*bp == '3')
6616 ip->system_header_p = 1;
6617 else if (*bp == '4')
6618 ip->system_header_p = 2;
6620 error ("invalid format `#line' directive");
6625 SKIP_WHITE_SPACE (bp);
6627 ip->system_header_p = 1;
6629 SKIP_WHITE_SPACE (bp);
6632 ip->system_header_p = 2;
6634 SKIP_WHITE_SPACE (bp);
6637 error ("invalid format `#line' directive");
6643 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6644 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6645 if (hp->length == fname_length &&
6646 bcmp (hp->value.cpval, fname, fname_length) == 0) {
6647 ip->nominal_fname = hp->value.cpval;
6651 /* Didn't find it; cons up a new one. */
6652 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6653 hp->next = *hash_bucket;
6656 hp->length = fname_length;
6657 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6658 bcopy (fname, hp->value.cpval, fname_length);
6661 error ("invalid format `#line' directive");
6665 ip->lineno = new_lineno;
6666 output_line_directive (ip, op, 0, file_change);
6667 check_expand (op, ip->length - (ip->bufp - ip->buf));
6671 /* Remove the definition of a symbol from the symbol table.
6672 according to un*x /lib/cpp, it is not an error to undef
6673 something that has no definitions, so it isn't one here either. */
6676 do_undef (buf, limit, op, keyword)
6677 U_CHAR *buf, *limit;
6679 struct directive *keyword;
6683 U_CHAR *orig_buf = buf;
6685 /* If this is a precompiler run (with -pcp) pass thru #undef directives. */
6686 if (pcp_outfile && op)
6687 pass_thru_directive (buf, limit, op, keyword);
6689 SKIP_WHITE_SPACE (buf);
6690 sym_length = check_macro_name (buf, "macro");
6692 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6693 /* If we are generating additional info for debugging (with -g) we
6694 need to pass through all effective #undef directives. */
6695 if (debug_output && op)
6696 pass_thru_directive (orig_buf, limit, op, keyword);
6697 if (hp->type != T_MACRO)
6698 warning ("undefining `%s'", hp->name);
6704 SKIP_WHITE_SPACE (buf);
6706 pedwarn ("garbage after `#undef' directive");
6711 /* Report an error detected by the program we are processing.
6712 Use the text of the line in the error message.
6713 (We use error because it prints the filename & line#.) */
6716 do_error (buf, limit, op, keyword)
6717 U_CHAR *buf, *limit;
6719 struct directive *keyword;
6721 int length = limit - buf;
6722 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6723 bcopy ((char *) buf, (char *) copy, length);
6725 SKIP_WHITE_SPACE (copy);
6726 error ("#error %s", copy);
6730 /* Report a warning detected by the program we are processing.
6731 Use the text of the line in the warning message, then continue.
6732 (We use error because it prints the filename & line#.) */
6735 do_warning (buf, limit, op, keyword)
6736 U_CHAR *buf, *limit;
6738 struct directive *keyword;
6740 int length = limit - buf;
6741 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6742 bcopy ((char *) buf, (char *) copy, length);
6744 SKIP_WHITE_SPACE (copy);
6745 warning ("#warning %s", copy);
6749 /* Remember the name of the current file being read from so that we can
6750 avoid ever including it again. */
6757 for (i = indepth; i >= 0; i--)
6758 if (instack[i].inc) {
6759 record_control_macro (instack[i].inc, (U_CHAR *) "");
6764 /* #ident has already been copied to the output file, so just ignore it. */
6767 do_ident (buf, limit, op, keyword)
6768 U_CHAR *buf, *limit;
6770 struct directive *keyword;
6775 /* Allow #ident in system headers, since that's not user's fault. */
6776 if (pedantic && !instack[indepth].system_header_p)
6777 pedwarn ("ANSI C does not allow `#ident'");
6779 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6780 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6781 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6782 limit = buf + (trybuf.bufp - trybuf.buf);
6783 len = (limit - buf);
6786 /* Output directive name. */
6787 check_expand (op, 7);
6788 bcopy ("#ident ", (char *) op->bufp, 7);
6791 /* Output the expanded argument line. */
6792 check_expand (op, len);
6793 bcopy ((char *) buf, (char *) op->bufp, len);
6799 /* #pragma and its argument line have already been copied to the output file.
6800 Just check for some recognized pragmas that need validation here. */
6803 do_pragma (buf, limit, op, keyword)
6804 U_CHAR *buf, *limit;
6806 struct directive *keyword;
6808 SKIP_WHITE_SPACE (buf);
6809 if (!strncmp ((char *) buf, "once", 4)) {
6810 /* Allow #pragma once in system headers, since that's not the user's
6812 if (!instack[indepth].system_header_p)
6813 warning ("`#pragma once' is obsolete");
6817 if (!strncmp ((char *) buf, "implementation", 14)) {
6818 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6819 been included yet. */
6822 U_CHAR *p = buf + 14, *fname;
6823 SKIP_WHITE_SPACE (p);
6824 if (*p == '\n' || *p != '\"')
6828 if ((p = (U_CHAR *) index ((char *) fname, '\"')))
6831 for (h = 0; h < INCLUDE_HASHSIZE; h++) {
6832 struct include_file *inc;
6833 for (inc = include_hashtab[h]; inc; inc = inc->next) {
6834 if (!strcmp (base_name (inc->fname), (char *) fname)) {
6835 warning ("`#pragma implementation' for \"%s\" appears after its #include",fname);
6845 /* This was a fun hack, but #pragma seems to start to be useful.
6846 By failing to recognize it, we pass it through unchanged to cc1. */
6848 /* The behavior of the #pragma directive is implementation defined.
6849 this implementation defines it as follows. */
6855 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6858 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6860 execl ("/usr/games/hack", "#pragma", 0);
6861 execl ("/usr/games/rogue", "#pragma", 0);
6862 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6863 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6865 fatal ("You are in a maze of twisty compiler features, all different");
6869 #ifdef SCCS_DIRECTIVE
6871 /* Just ignore #sccs, on systems where we define it at all. */
6874 do_sccs (buf, limit, op, keyword)
6875 U_CHAR *buf, *limit;
6877 struct directive *keyword;
6880 pedwarn ("ANSI C does not allow `#sccs'");
6884 #endif /* defined (SCCS_DIRECTIVE) */
6886 /* Handle #if directive by
6887 1) inserting special `defined' keyword into the hash table
6888 that gets turned into 0 or 1 by special_symbol (thus,
6889 if the luser has a symbol called `defined' already, it won't
6890 work inside the #if directive)
6891 2) rescan the input into a temporary output buffer
6892 3) pass the output buffer to the yacc parser and collect a value
6893 4) clean up the mess left from steps 1 and 2.
6894 5) call conditional_skip to skip til the next #endif (etc.),
6895 or not, depending on the value from step 3. */
6898 do_if (buf, limit, op, keyword)
6899 U_CHAR *buf, *limit;
6901 struct directive *keyword;
6903 HOST_WIDE_INT value;
6904 FILE_BUF *ip = &instack[indepth];
6906 value = eval_if_expression (buf, limit - buf);
6907 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
6911 /* Handle a #elif directive by not changing if_stack either.
6912 see the comment above do_else. */
6915 do_elif (buf, limit, op, keyword)
6916 U_CHAR *buf, *limit;
6918 struct directive *keyword;
6920 HOST_WIDE_INT value;
6921 FILE_BUF *ip = &instack[indepth];
6923 if (if_stack == instack[indepth].if_stack) {
6924 error ("`#elif' not within a conditional");
6927 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
6928 error ("`#elif' after `#else'");
6929 fprintf (stderr, " (matches line %d", if_stack->lineno);
6930 if (if_stack->fname != NULL && ip->fname != NULL &&
6931 strcmp (if_stack->fname, ip->nominal_fname) != 0)
6932 fprintf (stderr, ", file %s", if_stack->fname);
6933 fprintf (stderr, ")\n");
6935 if_stack->type = T_ELIF;
6938 if (if_stack->if_succeeded)
6939 skip_if_group (ip, 0, op);
6941 value = eval_if_expression (buf, limit - buf);
6943 skip_if_group (ip, 0, op);
6945 ++if_stack->if_succeeded; /* continue processing input */
6946 output_line_directive (ip, op, 1, same_file);
6952 /* Evaluate a #if expression in BUF, of length LENGTH, then parse the
6953 result as a C expression and return the value as an int. */
6955 static HOST_WIDE_INT
6956 eval_if_expression (buf, length)
6961 HASHNODE *save_defined;
6962 HOST_WIDE_INT value;
6964 save_defined = install ((U_CHAR *) "defined", -1, T_SPEC_DEFINED,
6967 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
6969 delete_macro (save_defined); /* clean up special symbol */
6971 temp_obuf.buf[temp_obuf.length] = '\n';
6972 value = parse_c_expression ((char *) temp_obuf.buf);
6974 free (temp_obuf.buf);
6979 /* routine to handle ifdef/ifndef. Try to look up the symbol, then do
6980 or don't skip to the #endif/#else/#elif depending on what directive
6981 is actually being processed. */
6984 do_xifdef (buf, limit, op, keyword)
6985 U_CHAR *buf, *limit;
6987 struct directive *keyword;
6990 FILE_BUF *ip = &instack[indepth];
6992 int start_of_file = 0;
6993 U_CHAR *control_macro = 0;
6995 /* Detect a #ifndef at start of file (not counting comments). */
6996 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
6997 U_CHAR *p = ip->buf;
6998 while (p != directive_start) {
7002 /* Make no special provision for backslash-newline here; this is
7003 slower if backslash-newlines are present, but it's correct,
7004 and it's not worth it to tune for the rare backslash-newline. */
7006 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
7007 /* Skip this comment. */
7009 U_CHAR *save_bufp = ip->bufp;
7011 p = skip_to_end_of_comment (ip, &junk, 1);
7012 ip->bufp = save_bufp;
7017 /* If we get here, this conditional is the beginning of the file. */
7022 /* Discard leading and trailing whitespace. */
7023 SKIP_WHITE_SPACE (buf);
7024 while (limit != buf && is_hor_space[limit[-1]]) limit--;
7026 /* Find the end of the identifier at the beginning. */
7027 for (end = buf; is_idchar[*end]; end++);
7030 skip = (keyword->type == T_IFDEF);
7032 pedwarn (end == limit ? "`#%s' with no argument"
7033 : "`#%s' argument starts with punctuation",
7038 if (! traditional) {
7039 if (isdigit (buf[0]))
7040 pedwarn ("`#%s' argument starts with a digit", keyword->name);
7041 else if (end != limit)
7042 pedwarn ("garbage at end of `#%s' argument", keyword->name);
7045 hp = lookup (buf, end-buf, -1);
7048 /* Output a precondition for this macro. */
7050 (hp->type == T_CONST
7051 || (hp->type == T_MACRO && hp->value.defn->predefined)))
7052 fprintf (pcp_outfile, "#define %s\n", hp->name);
7055 fprintf (pcp_outfile, "#undef ");
7056 while (is_idchar[*cp]) /* Ick! */
7057 fputc (*cp++, pcp_outfile);
7058 putc ('\n', pcp_outfile);
7062 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
7063 if (start_of_file && !skip) {
7064 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
7065 bcopy ((char *) buf, (char *) control_macro, end - buf);
7066 control_macro[end - buf] = 0;
7070 conditional_skip (ip, skip, T_IF, control_macro, op);
7074 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
7075 If this is a #ifndef starting at the beginning of a file,
7076 CONTROL_MACRO is the macro name tested by the #ifndef.
7077 Otherwise, CONTROL_MACRO is 0. */
7080 conditional_skip (ip, skip, type, control_macro, op)
7083 enum node_type type;
7084 U_CHAR *control_macro;
7087 IF_STACK_FRAME *temp;
7089 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7090 temp->fname = ip->nominal_fname;
7091 temp->lineno = ip->lineno;
7092 temp->next = if_stack;
7093 temp->control_macro = control_macro;
7096 if_stack->type = type;
7099 skip_if_group (ip, 0, op);
7102 ++if_stack->if_succeeded;
7103 output_line_directive (ip, &outbuf, 1, same_file);
7107 /* Skip to #endif, #else, or #elif. adjust line numbers, etc.
7108 Leaves input ptr at the sharp sign found.
7109 If ANY is nonzero, return at next directive of any sort. */
7112 skip_if_group (ip, any, op)
7117 register U_CHAR *bp = ip->bufp, *cp;
7118 register U_CHAR *endb = ip->buf + ip->length;
7119 struct directive *kt;
7120 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
7121 U_CHAR *beg_of_line = bp;
7122 register int ident_length;
7123 U_CHAR *ident, *after_ident;
7124 /* Save info about where the group starts. */
7125 U_CHAR *beg_of_group = bp;
7126 int beg_lineno = ip->lineno;
7128 if (output_conditionals && op != 0) {
7129 char *ptr = "#failed\n";
7130 int len = strlen (ptr);
7132 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7137 check_expand (op, len);
7138 bcopy (ptr, (char *) op->bufp, len);
7141 output_line_directive (ip, op, 1, 0);
7146 case '/': /* possible comment */
7147 if (*bp == '\\' && bp[1] == '\n')
7150 || (cplusplus_comments && *bp == '/')) {
7152 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
7157 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
7158 NULL_PTR, NULL_PTR);
7161 /* Char after backslash loses its special meaning. */
7164 ++ip->lineno; /* But do update the line-count. */
7173 if (beg_of_line == 0 || traditional)
7176 while (bp[0] == '\\' && bp[1] == '\n')
7182 /* # keyword: a # must be first nonblank char on the line */
7183 if (beg_of_line == 0)
7187 /* Scan from start of line, skipping whitespace, comments
7188 and backslash-newlines, and see if we reach this #.
7189 If not, this # is not special. */
7191 /* If -traditional, require # to be at beginning of line. */
7194 if (is_hor_space[*bp])
7196 else if (*bp == '\\' && bp[1] == '\n')
7198 else if (*bp == '/' && bp[1] == '*') {
7200 while (!(*bp == '*' && bp[1] == '/'))
7204 /* There is no point in trying to deal with C++ // comments here,
7205 because if there is one, then this # must be part of the
7206 comment and we would never reach here. */
7210 if (bp != ip->bufp) {
7211 bp = ip->bufp + 1; /* Reset bp to after the #. */
7215 bp = ip->bufp + 1; /* Point after the '#' */
7216 if (ip->bufp[0] == '%') {
7217 /* Skip past the ':' again. */
7218 while (*bp == '\\') {
7225 /* Skip whitespace and \-newline. */
7227 if (is_hor_space[*bp])
7229 else if (*bp == '\\' && bp[1] == '\n')
7231 else if (*bp == '/') {
7233 for (bp += 2; ; bp++) {
7236 else if (*bp == '*') {
7237 if (bp[-1] == '/' && warn_comments)
7238 warning ("`/*' within comment");
7244 } else if (bp[1] == '/' && cplusplus_comments) {
7245 for (bp += 2; ; bp++) {
7250 warning ("multiline `//' comment");
7262 /* Now find end of directive name.
7263 If we encounter a backslash-newline, exchange it with any following
7264 symbol-constituents so that we end up with a contiguous name. */
7270 if (*bp == '\\' && bp[1] == '\n')
7271 name_newline_fix (bp);
7277 ident_length = bp - cp;
7281 /* A line of just `#' becomes blank. */
7283 if (ident_length == 0 && *after_ident == '\n') {
7287 if (ident_length == 0 || !is_idstart[*ident]) {
7289 while (is_idchar[*p]) {
7290 if (*p < '0' || *p > '9')
7294 /* Handle # followed by a line number. */
7295 if (p != ident && !is_idchar[*p]) {
7297 pedwarn ("`#' followed by integer");
7301 /* Avoid error for `###' and similar cases unless -pedantic. */
7303 while (*p == '#' || is_hor_space[*p]) p++;
7305 if (pedantic && !lang_asm)
7306 pedwarn ("invalid preprocessing directive");
7311 if (!lang_asm && pedantic)
7312 pedwarn ("invalid preprocessing directive name");
7316 for (kt = directive_table; kt->length >= 0; kt++) {
7317 IF_STACK_FRAME *temp;
7318 if (ident_length == kt->length
7319 && bcmp (cp, kt->name, kt->length) == 0) {
7320 /* If we are asked to return on next directive, do so now. */
7328 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7329 temp->next = if_stack;
7331 temp->lineno = ip->lineno;
7332 temp->fname = ip->nominal_fname;
7333 temp->type = kt->type;
7337 if (pedantic && if_stack != save_if_stack)
7338 validate_else (bp, endb);
7340 if (if_stack == instack[indepth].if_stack) {
7341 error ("`#%s' not within a conditional", kt->name);
7344 else if (if_stack == save_if_stack)
7345 goto done; /* found what we came for */
7347 if (kt->type != T_ENDIF) {
7348 if (if_stack->type == T_ELSE)
7349 error ("`#else' or `#elif' after `#else'");
7350 if_stack->type = kt->type;
7355 if_stack = if_stack->next;
7365 /* Don't let erroneous code go by. */
7366 if (kt->length < 0 && !lang_asm && pedantic)
7367 pedwarn ("invalid preprocessing directive name");
7372 /* after this returns, rescan will exit because ip->bufp
7373 now points to the end of the buffer.
7374 rescan is responsible for the error message also. */
7377 if (output_conditionals && op != 0) {
7378 char *ptr = "#endfailed\n";
7379 int len = strlen (ptr);
7381 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7386 check_expand (op, beg_of_line - beg_of_group);
7387 bcopy ((char *) beg_of_group, (char *) op->bufp,
7388 beg_of_line - beg_of_group);
7389 op->bufp += beg_of_line - beg_of_group;
7390 op->lineno += ip->lineno - beg_lineno;
7391 check_expand (op, len);
7392 bcopy (ptr, (char *) op->bufp, len);
7398 /* Handle a #else directive. Do this by just continuing processing
7399 without changing if_stack ; this is so that the error message
7400 for missing #endif's etc. will point to the original #if. It
7401 is possible that something different would be better. */
7404 do_else (buf, limit, op, keyword)
7405 U_CHAR *buf, *limit;
7407 struct directive *keyword;
7409 FILE_BUF *ip = &instack[indepth];
7412 SKIP_WHITE_SPACE (buf);
7414 pedwarn ("text following `#else' violates ANSI standard");
7417 if (if_stack == instack[indepth].if_stack) {
7418 error ("`#else' not within a conditional");
7421 /* #ifndef can't have its special treatment for containing the whole file
7422 if it has a #else clause. */
7423 if_stack->control_macro = 0;
7425 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7426 error ("`#else' after `#else'");
7427 fprintf (stderr, " (matches line %d", if_stack->lineno);
7428 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7429 fprintf (stderr, ", file %s", if_stack->fname);
7430 fprintf (stderr, ")\n");
7432 if_stack->type = T_ELSE;
7435 if (if_stack->if_succeeded)
7436 skip_if_group (ip, 0, op);
7438 ++if_stack->if_succeeded; /* continue processing input */
7439 output_line_directive (ip, op, 1, same_file);
7444 /* Unstack after #endif directive. */
7447 do_endif (buf, limit, op, keyword)
7448 U_CHAR *buf, *limit;
7450 struct directive *keyword;
7453 SKIP_WHITE_SPACE (buf);
7455 pedwarn ("text following `#endif' violates ANSI standard");
7458 if (if_stack == instack[indepth].if_stack)
7459 error ("unbalanced `#endif'");
7461 IF_STACK_FRAME *temp = if_stack;
7462 if_stack = if_stack->next;
7463 if (temp->control_macro != 0) {
7464 /* This #endif matched a #ifndef at the start of the file.
7465 See if it is at the end of the file. */
7466 FILE_BUF *ip = &instack[indepth];
7467 U_CHAR *p = ip->bufp;
7468 U_CHAR *ep = ip->buf + ip->length;
7474 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
7475 /* Skip this comment. */
7477 U_CHAR *save_bufp = ip->bufp;
7479 p = skip_to_end_of_comment (ip, &junk, 1);
7480 ip->bufp = save_bufp;
7485 /* If we get here, this #endif ends a #ifndef
7486 that contains all of the file (aside from whitespace).
7487 Arrange not to include the file again
7488 if the macro that was tested is defined.
7490 Do not do this for the top-level file in a -include or any
7491 file in a -imacros. */
7493 && ! (indepth == 1 && no_record_file)
7494 && ! (no_record_file && no_output))
7495 record_control_macro (ip->inc, temp->control_macro);
7499 output_line_directive (&instack[indepth], op, 1, same_file);
7504 /* When an #else or #endif is found while skipping failed conditional,
7505 if -pedantic was specified, this is called to warn about text after
7506 the directive name. P points to the first char after the directive
7510 validate_else (p, limit)
7512 register U_CHAR *limit;
7514 /* Advance P over whitespace and comments. */
7516 while (*p == '\\' && p[1] == '\n')
7518 if (is_hor_space[*p])
7520 else if (*p == '/') {
7521 while (p[1] == '\\' && p[2] == '\n')
7524 /* Don't bother warning about unterminated comments
7525 since that will happen later. Just be sure to exit. */
7526 for (p += 2; ; p++) {
7530 while (p[1] == '\\' && p[2] == '\n')
7539 else if (cplusplus_comments && p[1] == '/')
7545 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7548 /* Skip a comment, assuming the input ptr immediately follows the
7549 initial slash-star. Bump *LINE_COUNTER for each newline.
7550 (The canonical line counter is &ip->lineno.)
7551 Don't use this routine (or the next one) if bumping the line
7552 counter is not sufficient to deal with newlines in the string.
7554 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7555 This feature is useful when processing a comment that is going to
7556 be processed or was processed at another point in the preprocessor,
7557 to avoid a duplicate warning. Likewise for unterminated comment
7561 skip_to_end_of_comment (ip, line_counter, nowarn)
7562 register FILE_BUF *ip;
7563 int *line_counter; /* place to remember newlines, or NULL */
7566 register U_CHAR *limit = ip->buf + ip->length;
7567 register U_CHAR *bp = ip->bufp;
7568 FILE_BUF *op = put_out_comments && !line_counter ? &outbuf : (FILE_BUF *) 0;
7569 int start_line = line_counter ? *line_counter : 0;
7571 /* JF this line_counter stuff is a crock to make sure the
7572 comment is only put out once, no matter how many times
7573 the comment is skipped. It almost works */
7576 *op->bufp++ = bp[-1];
7578 if (cplusplus_comments && bp[-1] == '/') {
7579 for (; bp < limit; bp++) {
7585 if (!nowarn && warn_comments)
7586 warning ("multiline `//' comment");
7596 while (bp < limit) {
7601 /* If this is the end of the file, we have an unterminated comment.
7602 Don't swallow the newline. We are guaranteed that there will be a
7603 trailing newline and various pieces assume it's there. */
7610 if (line_counter != NULL)
7616 if (bp[-2] == '/' && !nowarn && warn_comments)
7617 warning ("`/*' within comment");
7618 if (*bp == '\\' && bp[1] == '\n')
7631 error_with_line (line_for_error (start_line), "unterminated comment");
7636 /* Skip over a quoted string. BP points to the opening quote.
7637 Returns a pointer after the closing quote. Don't go past LIMIT.
7638 START_LINE is the line number of the starting point (but it need
7639 not be valid if the starting point is inside a macro expansion).
7641 The input stack state is not changed.
7643 If COUNT_NEWLINES is nonzero, it points to an int to increment
7644 for each newline passed.
7646 If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7647 if we pass a backslash-newline.
7649 If EOFP is nonzero, set *EOFP to 1 if the string is unterminated. */
7652 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7653 register U_CHAR *bp;
7654 register U_CHAR *limit;
7656 int *count_newlines;
7657 int *backslash_newlines_p;
7660 register U_CHAR c, match;
7665 error_with_line (line_for_error (start_line),
7666 "unterminated string or character constant");
7667 error_with_line (multiline_string_line,
7668 "possible real start of unterminated constant");
7669 multiline_string_line = 0;
7676 while (*bp == '\\' && bp[1] == '\n') {
7677 if (backslash_newlines_p)
7678 *backslash_newlines_p = 1;
7683 if (*bp == '\n' && count_newlines) {
7684 if (backslash_newlines_p)
7685 *backslash_newlines_p = 1;
7689 } else if (c == '\n') {
7691 /* Unterminated strings and character constants are 'valid'. */
7692 bp--; /* Don't consume the newline. */
7697 if (match == '\'') {
7698 error_with_line (line_for_error (start_line),
7699 "unterminated string or character constant");
7705 /* If not traditional, then allow newlines inside strings. */
7708 if (multiline_string_line == 0) {
7710 pedwarn_with_line (line_for_error (start_line),
7711 "string constant runs past end of line");
7712 multiline_string_line = start_line;
7714 } else if (c == match)
7720 /* Place into DST a quoted string representing the string SRC.
7721 Return the address of DST's terminating null. */
7724 quote_string (dst, src)
7731 switch ((c = *src++))
7738 sprintf (dst, "\\%03o", c);
7756 /* Skip across a group of balanced parens, starting from IP->bufp.
7757 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7759 This does not handle newlines, because it's used for the arg of #if,
7760 where there aren't any newlines. Also, backslash-newline can't appear. */
7763 skip_paren_group (ip)
7764 register FILE_BUF *ip;
7766 U_CHAR *limit = ip->buf + ip->length;
7767 U_CHAR *p = ip->bufp;
7769 int lines_dummy = 0;
7771 while (p != limit) {
7781 return ip->bufp = p;
7787 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7795 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7797 return ip->bufp = p;
7807 /* Write out a #line directive, for instance, after an #include file.
7808 If CONDITIONAL is nonzero, we can omit the #line if it would
7809 appear to be a no-op, and we can output a few newlines instead
7810 if we want to increase the line number by a small amount.
7811 FILE_CHANGE says whether we are entering a file, leaving, or neither. */
7814 output_line_directive (ip, op, conditional, file_change)
7817 enum file_change_code file_change;
7820 char *line_directive_buf, *line_end;
7822 if (no_line_directives
7823 || ip->fname == NULL
7825 op->lineno = ip->lineno;
7830 if (ip->lineno == op->lineno)
7833 /* If the inherited line number is a little too small,
7834 output some newlines instead of a #line directive. */
7835 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7836 check_expand (op, 10);
7837 while (ip->lineno > op->lineno) {
7845 /* Don't output a line number of 0 if we can help it. */
7846 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7847 && *ip->bufp == '\n') {
7852 line_directive_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7853 sprintf (line_directive_buf, "# %d ", ip->lineno);
7854 line_end = quote_string (line_directive_buf + strlen (line_directive_buf),
7856 if (file_change != same_file) {
7858 *line_end++ = file_change == enter_file ? '1' : '2';
7860 /* Tell cc1 if following text comes from a system header file. */
7861 if (ip->system_header_p) {
7865 #ifndef NO_IMPLICIT_EXTERN_C
7866 /* Tell cc1plus if following text should be treated as C. */
7867 if (ip->system_header_p == 2 && cplusplus) {
7873 len = line_end - line_directive_buf;
7874 check_expand (op, len + 1);
7875 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7877 bcopy ((char *) line_directive_buf, (char *) op->bufp, len);
7879 op->lineno = ip->lineno;
7882 /* This structure represents one parsed argument in a macro call.
7883 `raw' points to the argument text as written (`raw_length' is its length).
7884 `expanded' points to the argument's macro-expansion
7885 (its length is `expand_length').
7886 `stringified_length' is the length the argument would have
7888 `use_count' is the number of times this macro arg is substituted
7889 into the macro. If the actual use count exceeds 10,
7890 the value stored is 10.
7891 `free1' and `free2', if nonzero, point to blocks to be freed
7892 when the macro argument data is no longer needed. */
7895 U_CHAR *raw, *expanded;
7896 int raw_length, expand_length;
7897 int stringified_length;
7898 U_CHAR *free1, *free2;
7903 /* Expand a macro call.
7904 HP points to the symbol that is the macro being called.
7905 Put the result of expansion onto the input stack
7906 so that subsequent input by our caller will use it.
7908 If macro wants arguments, caller has already verified that
7909 an argument list follows; arguments come from the input stack. */
7912 macroexpand (hp, op)
7917 DEFINITION *defn = hp->value.defn;
7918 register U_CHAR *xbuf;
7920 int start_line = instack[indepth].lineno;
7921 int rest_args, rest_zero;
7923 CHECK_DEPTH (return;);
7925 /* it might not actually be a macro. */
7926 if (hp->type != T_MACRO) {
7927 special_symbol (hp, op);
7931 /* This macro is being used inside a #if, which means it must be */
7932 /* recorded as a precondition. */
7933 if (pcp_inside_if && pcp_outfile && defn->predefined)
7934 dump_single_macro (hp, pcp_outfile);
7936 nargs = defn->nargs;
7940 struct argdata *args;
7941 char *parse_error = 0;
7943 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
7945 for (i = 0; i < nargs; i++) {
7946 args[i].raw = (U_CHAR *) "";
7947 args[i].expanded = 0;
7948 args[i].raw_length = args[i].expand_length
7949 = args[i].stringified_length = 0;
7950 args[i].free1 = args[i].free2 = 0;
7951 args[i].use_count = 0;
7954 /* Parse all the macro args that are supplied. I counts them.
7955 The first NARGS args are stored in ARGS.
7956 The rest are discarded.
7957 If rest_args is set then we assume macarg absorbed the rest of the args.
7962 /* Discard the open-parenthesis or comma before the next arg. */
7963 ++instack[indepth].bufp;
7966 if (i < nargs || (nargs == 0 && i == 0)) {
7967 /* If we are working on last arg which absorbs rest of args... */
7968 if (i == nargs - 1 && defn->rest_args)
7970 parse_error = macarg (&args[i], rest_args);
7973 parse_error = macarg (NULL_PTR, 0);
7975 error_with_line (line_for_error (start_line), parse_error);
7979 } while (*instack[indepth].bufp != ')');
7981 /* If we got one arg but it was just whitespace, call that 0 args. */
7983 register U_CHAR *bp = args[0].raw;
7984 register U_CHAR *lim = bp + args[0].raw_length;
7985 /* cpp.texi says for foo ( ) we provide one argument.
7986 However, if foo wants just 0 arguments, treat this as 0. */
7988 while (bp != lim && is_space[*bp]) bp++;
7993 /* Don't output an error message if we have already output one for
7994 a parse error above. */
7996 if (nargs == 0 && i > 0) {
7998 error ("arguments given to macro `%s'", hp->name);
7999 } else if (i < nargs) {
8000 /* traditional C allows foo() if foo wants one argument. */
8001 if (nargs == 1 && i == 0 && traditional)
8003 /* the rest args token is allowed to absorb 0 tokens */
8004 else if (i == nargs - 1 && defn->rest_args)
8006 else if (parse_error)
8009 error ("macro `%s' used without args", hp->name);
8011 error ("macro `%s' used with just one arg", hp->name);
8013 error ("macro `%s' used with only %d args", hp->name, i);
8014 } else if (i > nargs) {
8016 error ("macro `%s' used with too many (%d) args", hp->name, i);
8019 /* Swallow the closeparen. */
8020 ++instack[indepth].bufp;
8022 /* If macro wants zero args, we parsed the arglist for checking only.
8023 Read directly from the macro definition. */
8025 xbuf = defn->expansion;
8026 xbuf_len = defn->length;
8028 register U_CHAR *exp = defn->expansion;
8029 register int offset; /* offset in expansion,
8030 copied a piece at a time */
8031 register int totlen; /* total amount of exp buffer filled so far */
8033 register struct reflist *ap, *last_ap;
8035 /* Macro really takes args. Compute the expansion of this call. */
8037 /* Compute length in characters of the macro's expansion.
8038 Also count number of times each arg is used. */
8039 xbuf_len = defn->length;
8040 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
8042 xbuf_len += args[ap->argno].stringified_length;
8043 else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional)
8044 /* Add 4 for two newline-space markers to prevent
8045 token concatenation. */
8046 xbuf_len += args[ap->argno].raw_length + 4;
8048 /* We have an ordinary (expanded) occurrence of the arg.
8049 So compute its expansion, if we have not already. */
8050 if (args[ap->argno].expanded == 0) {
8052 obuf = expand_to_temp_buffer (args[ap->argno].raw,
8053 args[ap->argno].raw + args[ap->argno].raw_length,
8056 args[ap->argno].expanded = obuf.buf;
8057 args[ap->argno].expand_length = obuf.length;
8058 args[ap->argno].free2 = obuf.buf;
8061 /* Add 4 for two newline-space markers to prevent
8062 token concatenation. */
8063 xbuf_len += args[ap->argno].expand_length + 4;
8065 if (args[ap->argno].use_count < 10)
8066 args[ap->argno].use_count++;
8069 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
8071 /* Generate in XBUF the complete expansion
8072 with arguments substituted in.
8073 TOTLEN is the total size generated so far.
8074 OFFSET is the index in the definition
8075 of where we are copying from. */
8076 offset = totlen = 0;
8077 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
8078 last_ap = ap, ap = ap->next) {
8079 register struct argdata *arg = &args[ap->argno];
8080 int count_before = totlen;
8082 /* Add chars to XBUF. */
8083 for (i = 0; i < ap->nchars; i++, offset++)
8084 xbuf[totlen++] = exp[offset];
8086 /* If followed by an empty rest arg with concatenation,
8087 delete the last run of nonwhite chars. */
8088 if (rest_zero && totlen > count_before
8089 && ((ap->rest_args && ap->raw_before != 0)
8090 || (last_ap != NULL && last_ap->rest_args
8091 && last_ap->raw_after != 0))) {
8092 /* Delete final whitespace. */
8093 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
8097 /* Delete the nonwhites before them. */
8098 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
8103 if (ap->stringify != 0) {
8104 int arglen = arg->raw_length;
8110 && (c = arg->raw[i], is_space[c]))
8113 && (c = arg->raw[arglen - 1], is_space[c]))
8116 xbuf[totlen++] = '\"'; /* insert beginning quote */
8117 for (; i < arglen; i++) {
8120 /* Special markers Newline Space
8121 generate nothing for a stringified argument. */
8122 if (c == '\n' && arg->raw[i+1] != '\n') {
8127 /* Internal sequences of whitespace are replaced by one space
8128 except within an string or char token. */
8130 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
8132 /* Note that Newline Space does occur within whitespace
8133 sequences; consider it part of the sequence. */
8134 if (c == '\n' && is_space[arg->raw[i+1]])
8136 else if (c != '\n' && is_space[c])
8153 } else if (c == '\"' || c == '\'')
8157 /* Escape these chars */
8158 if (c == '\"' || (in_string && c == '\\'))
8159 xbuf[totlen++] = '\\';
8163 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
8168 xbuf[totlen++] = '\"'; /* insert ending quote */
8169 } else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) {
8170 U_CHAR *p1 = arg->raw;
8171 U_CHAR *l1 = p1 + arg->raw_length;
8172 if (ap->raw_before != 0) {
8173 while (p1 != l1 && is_space[*p1]) p1++;
8174 while (p1 != l1 && is_idchar[*p1])
8175 xbuf[totlen++] = *p1++;
8176 /* Delete any no-reexpansion marker that follows
8177 an identifier at the beginning of the argument
8178 if the argument is concatenated with what precedes it. */
8179 if (p1[0] == '\n' && p1[1] == '-')
8181 } else if (!traditional) {
8182 /* Ordinary expanded use of the argument.
8183 Put in newline-space markers to prevent token pasting. */
8184 xbuf[totlen++] = '\n';
8185 xbuf[totlen++] = ' ';
8187 if (ap->raw_after != 0) {
8188 /* Arg is concatenated after: delete trailing whitespace,
8189 whitespace markers, and no-reexpansion markers. */
8191 if (is_space[l1[-1]]) l1--;
8192 else if (l1[-1] == '-') {
8193 U_CHAR *p2 = l1 - 1;
8194 /* If a `-' is preceded by an odd number of newlines then it
8195 and the last newline are a no-reexpansion marker. */
8196 while (p2 != p1 && p2[-1] == '\n') p2--;
8197 if ((l1 - 1 - p2) & 1) {
8206 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8208 if (!traditional && ap->raw_after == 0) {
8209 /* Ordinary expanded use of the argument.
8210 Put in newline-space markers to prevent token pasting. */
8211 xbuf[totlen++] = '\n';
8212 xbuf[totlen++] = ' ';
8215 /* Ordinary expanded use of the argument.
8216 Put in newline-space markers to prevent token pasting. */
8218 xbuf[totlen++] = '\n';
8219 xbuf[totlen++] = ' ';
8221 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8222 arg->expand_length);
8223 totlen += arg->expand_length;
8225 xbuf[totlen++] = '\n';
8226 xbuf[totlen++] = ' ';
8228 /* If a macro argument with newlines is used multiple times,
8229 then only expand the newlines once. This avoids creating output
8230 lines which don't correspond to any input line, which confuses
8232 if (arg->use_count > 1 && arg->newlines > 0) {
8233 /* Don't bother doing change_newlines for subsequent
8237 = change_newlines (arg->expanded, arg->expand_length);
8241 if (totlen > xbuf_len)
8245 /* If there is anything left of the definition after handling
8246 the arg list, copy that in too. */
8248 for (i = offset; i < defn->length; i++) {
8249 /* if we've reached the end of the macro */
8252 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8253 && last_ap->raw_after != 0))
8254 xbuf[totlen++] = exp[i];
8260 for (i = 0; i < nargs; i++) {
8261 if (args[i].free1 != 0)
8262 free (args[i].free1);
8263 if (args[i].free2 != 0)
8264 free (args[i].free2);
8268 xbuf = defn->expansion;
8269 xbuf_len = defn->length;
8272 /* Now put the expansion on the input stack
8273 so our caller will commence reading from it. */
8275 register FILE_BUF *ip2;
8277 ip2 = &instack[++indepth];
8280 ip2->nominal_fname = 0;
8282 /* This may not be exactly correct, but will give much better error
8283 messages for nested macro calls than using a line number of zero. */
8284 ip2->lineno = start_line;
8286 ip2->length = xbuf_len;
8288 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8290 ip2->if_stack = if_stack;
8291 ip2->system_header_p = 0;
8293 /* Recursive macro use sometimes works traditionally.
8294 #define foo(x,y) bar (x (y,0), y)
8298 hp->type = T_DISABLED;
8302 /* Parse a macro argument and store the info on it into *ARGPTR.
8303 REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8304 Return nonzero to indicate a syntax error. */
8307 macarg (argptr, rest_args)
8308 register struct argdata *argptr;
8311 FILE_BUF *ip = &instack[indepth];
8317 /* Try to parse as much of the argument as exists at this
8318 input stack level. */
8319 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8320 &paren, &newlines, &comments, rest_args);
8322 /* If we find the end of the argument at this level,
8323 set up *ARGPTR to point at it in the input stack. */
8324 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8325 && bp != ip->buf + ip->length) {
8327 argptr->raw = ip->bufp;
8328 argptr->raw_length = bp - ip->bufp;
8329 argptr->newlines = newlines;
8333 /* This input stack level ends before the macro argument does.
8334 We must pop levels and keep parsing.
8335 Therefore, we must allocate a temporary buffer and copy
8336 the macro argument into it. */
8337 int bufsize = bp - ip->bufp;
8338 int extra = newlines;
8339 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8340 int final_start = 0;
8342 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8344 ip->lineno += newlines;
8346 while (bp == ip->buf + ip->length) {
8347 if (instack[indepth].macro == 0) {
8348 result = "unterminated macro call";
8351 ip->macro->type = T_MACRO;
8353 free (ip->free_ptr);
8354 ip = &instack[--indepth];
8357 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8358 &newlines, &comments, rest_args);
8359 final_start = bufsize;
8360 bufsize += bp - ip->bufp;
8362 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8363 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8366 ip->lineno += newlines;
8369 /* Now, if arg is actually wanted, record its raw form,
8370 discarding comments and duplicating newlines in whatever
8371 part of it did not come from a macro expansion.
8372 EXTRA space has been preallocated for duplicating the newlines.
8373 FINAL_START is the index of the start of that part. */
8375 argptr->raw = buffer;
8376 argptr->raw_length = bufsize;
8377 argptr->free1 = buffer;
8378 argptr->newlines = newlines;
8379 if ((newlines || comments) && ip->fname != 0)
8382 discard_comments (argptr->raw + final_start,
8383 argptr->raw_length - final_start,
8385 argptr->raw[argptr->raw_length] = 0;
8386 if (argptr->raw_length > bufsize + extra)
8391 /* If we are not discarding this argument,
8392 macroexpand it and compute its length as stringified.
8393 All this info goes into *ARGPTR. */
8396 register U_CHAR *buf, *lim;
8397 register int totlen;
8400 lim = buf + argptr->raw_length;
8402 while (buf != lim && is_space[*buf])
8404 while (buf != lim && is_space[lim[-1]])
8406 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8407 while (buf != lim) {
8408 register U_CHAR c = *buf++;
8410 /* Internal sequences of whitespace are replaced by one space
8411 in most cases, but not always. So count all the whitespace
8412 in case we need to keep it all. */
8415 SKIP_ALL_WHITE_SPACE (buf);
8418 if (c == '\"' || c == '\\') /* escape these chars */
8420 else if (!isprint (c))
8423 argptr->stringified_length = totlen;
8428 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8429 counting parens in *DEPTHPTR,
8430 and return if reach LIMIT
8431 or before a `)' that would make *DEPTHPTR negative
8432 or before a comma when *DEPTHPTR is zero.
8433 Single and double quotes are matched and termination
8434 is inhibited within them. Comments also inhibit it.
8435 Value returned is pointer to stopping place.
8437 Increment *NEWLINES each time a newline is passed.
8438 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8439 Set *COMMENTS to 1 if a comment is seen. */
8442 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8444 register U_CHAR *limit;
8445 int *depthptr, *newlines, *comments;
8448 register U_CHAR *bp = start;
8450 while (bp < limit) {
8456 if (--(*depthptr) < 0)
8460 /* Traditionally, backslash makes following char not special. */
8461 if (bp + 1 < limit && traditional)
8464 /* But count source lines anyway. */
8473 if (bp[1] == '\\' && bp[2] == '\n')
8474 newline_fix (bp + 1);
8477 for (bp += 2; bp < limit; bp++) {
8480 else if (*bp == '*') {
8481 if (bp[-1] == '/' && warn_comments)
8482 warning ("`/*' within comment");
8483 if (bp[1] == '\\' && bp[2] == '\n')
8484 newline_fix (bp + 1);
8491 } else if (bp[1] == '/' && cplusplus_comments) {
8493 for (bp += 2; bp < limit; bp++) {
8499 warning ("multiline `//' comment");
8508 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8513 while (*bp == '\\' && bp[1] == '\n') {
8516 } else if (*bp == '\n') {
8525 /* if we've returned to lowest level and we aren't absorbing all args */
8526 if ((*depthptr) == 0 && rest_args == 0)
8536 /* Discard comments and duplicate newlines
8537 in the string of length LENGTH at START,
8538 except inside of string constants.
8539 The string is copied into itself with its beginning staying fixed.
8541 NEWLINES is the number of newlines that must be duplicated.
8542 We assume that that much extra space is available past the end
8546 discard_comments (start, length, newlines)
8551 register U_CHAR *ibp;
8552 register U_CHAR *obp;
8553 register U_CHAR *limit;
8556 /* If we have newlines to duplicate, copy everything
8557 that many characters up. Then, in the second part,
8558 we will have room to insert the newlines
8560 NEWLINES may actually be too large, because it counts
8561 newlines in string constants, and we don't duplicate those.
8562 But that does no harm. */
8564 ibp = start + length;
8565 obp = ibp + newlines;
8567 while (limit != ibp)
8571 ibp = start + newlines;
8572 limit = start + length + newlines;
8575 while (ibp < limit) {
8576 *obp++ = c = *ibp++;
8579 /* Duplicate the newline. */
8591 if (*ibp == '\\' && ibp[1] == '\n')
8593 /* Delete any comment. */
8594 if (cplusplus_comments && ibp[0] == '/') {
8595 /* Comments are equivalent to spaces. */
8598 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8602 if (ibp[0] != '*' || ibp + 1 >= limit)
8604 /* Comments are equivalent to spaces.
8605 For -traditional, a comment is equivalent to nothing. */
8611 while (ibp + 1 < limit) {
8613 && ibp[1] == '\\' && ibp[2] == '\n')
8614 newline_fix (ibp + 1);
8615 if (ibp[0] == '*' && ibp[1] == '/')
8624 /* Notice and skip strings, so that we don't
8625 think that comments start inside them,
8626 and so we don't duplicate newlines in them. */
8629 while (ibp < limit) {
8630 *obp++ = c = *ibp++;
8633 if (c == '\n' && quotec == '\'')
8635 if (c == '\\' && ibp < limit) {
8636 while (*ibp == '\\' && ibp[1] == '\n')
8649 /* Turn newlines to spaces 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. */
8654 change_newlines (start, length)
8658 register U_CHAR *ibp;
8659 register U_CHAR *obp;
8660 register U_CHAR *limit;
8664 limit = start + length;
8667 while (ibp < limit) {
8668 *obp++ = c = *ibp++;
8671 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8672 string. Skip past the newline and its duplicate.
8673 Put a space in the output. */
8684 /* Notice and skip strings, so that we don't delete newlines in them. */
8687 while (ibp < limit) {
8688 *obp++ = c = *ibp++;
8691 if (c == '\n' && quotec == '\'')
8702 /* my_strerror - return the descriptive text associated with an
8706 my_strerror (errnum)
8712 #ifndef HAVE_STRERROR
8713 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8715 result = strerror (errnum);
8718 /* VAXCRTL's strerror() takes an optional second argument, which only
8719 matters when the first argument is EVMSERR. However, it's simplest
8720 just to pass it unconditionally. `vaxc$errno' is declared in
8721 <errno.h>, and maintained by the library in parallel with `errno'.
8722 We assume that caller's `errnum' either matches the last setting of
8723 `errno' by the library or else does not have the value `EVMSERR'. */
8725 result = strerror (errnum, vaxc$errno);
8729 result = "undocumented I/O error";
8734 /* error - print error message and increment count of errors. */
8737 error (PRINTF_ALIST (msg))
8742 VA_START (args, msg);
8753 FILE_BUF *ip = NULL;
8755 print_containing_files ();
8757 for (i = indepth; i >= 0; i--)
8758 if (instack[i].fname != NULL) {
8764 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8765 vfprintf (stderr, msg, args);
8766 fprintf (stderr, "\n");
8770 /* Error including a message from `errno'. */
8773 error_from_errno (name)
8777 FILE_BUF *ip = NULL;
8779 print_containing_files ();
8781 for (i = indepth; i >= 0; i--)
8782 if (instack[i].fname != NULL) {
8788 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8790 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8795 /* Print error message but don't count it. */
8798 warning (PRINTF_ALIST (msg))
8803 VA_START (args, msg);
8804 vwarning (msg, args);
8809 vwarning (msg, args)
8814 FILE_BUF *ip = NULL;
8816 if (inhibit_warnings)
8819 if (warnings_are_errors)
8822 print_containing_files ();
8824 for (i = indepth; i >= 0; i--)
8825 if (instack[i].fname != NULL) {
8831 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8832 fprintf (stderr, "warning: ");
8833 vfprintf (stderr, msg, args);
8834 fprintf (stderr, "\n");
8838 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8839 error_with_line (int line, PRINTF_ALIST (msg))
8841 error_with_line (line, PRINTF_ALIST (msg))
8848 VA_START (args, msg);
8849 verror_with_line (line, msg, args);
8854 verror_with_line (line, msg, args)
8860 FILE_BUF *ip = NULL;
8862 print_containing_files ();
8864 for (i = indepth; i >= 0; i--)
8865 if (instack[i].fname != NULL) {
8871 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8872 vfprintf (stderr, msg, args);
8873 fprintf (stderr, "\n");
8878 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8879 warning_with_line (int line, PRINTF_ALIST (msg))
8881 warning_with_line (line, PRINTF_ALIST (msg))
8888 VA_START (args, msg);
8889 vwarning_with_line (line, msg, args);
8894 vwarning_with_line (line, msg, args)
8900 FILE_BUF *ip = NULL;
8902 if (inhibit_warnings)
8905 if (warnings_are_errors)
8908 print_containing_files ();
8910 for (i = indepth; i >= 0; i--)
8911 if (instack[i].fname != NULL) {
8917 fprintf (stderr, line ? "%s:%d: " : "%s: ", ip->nominal_fname, line);
8918 fprintf (stderr, "warning: ");
8919 vfprintf (stderr, msg, args);
8920 fprintf (stderr, "\n");
8923 /* Print an error message and maybe count it. */
8926 pedwarn (PRINTF_ALIST (msg))
8931 VA_START (args, msg);
8932 if (pedantic_errors)
8935 vwarning (msg, args);
8940 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8941 pedwarn_with_line (int line, PRINTF_ALIST (msg))
8943 pedwarn_with_line (line, PRINTF_ALIST (msg))
8950 VA_START (args, msg);
8951 if (pedantic_errors)
8952 verror_with_line (line, msg, args);
8954 vwarning_with_line (line, msg, args);
8958 /* Report a warning (or an error if pedantic_errors)
8959 giving specified file name and line number, not current. */
8962 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8963 pedwarn_with_file_and_line (char *file, int line, PRINTF_ALIST (msg))
8965 pedwarn_with_file_and_line (file, line, PRINTF_ALIST (msg))
8973 if (!pedantic_errors && inhibit_warnings)
8976 fprintf (stderr, "%s:%d: ", file, line);
8977 if (pedantic_errors)
8979 if (!pedantic_errors)
8980 fprintf (stderr, "warning: ");
8981 VA_START (args, msg);
8982 vfprintf (stderr, msg, args);
8984 fprintf (stderr, "\n");
8987 /* Print the file names and line numbers of the #include
8988 directives which led to the current file. */
8991 print_containing_files ()
8993 FILE_BUF *ip = NULL;
8997 /* If stack of files hasn't changed since we last printed
8998 this info, don't repeat it. */
8999 if (last_error_tick == input_file_stack_tick)
9002 for (i = indepth; i >= 0; i--)
9003 if (instack[i].fname != NULL) {
9008 /* Give up if we don't find a source file. */
9012 /* Find the other, outer source files. */
9013 for (i--; i >= 0; i--)
9014 if (instack[i].fname != NULL) {
9018 fprintf (stderr, "In file included");
9020 fprintf (stderr, ",\n ");
9023 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
9026 fprintf (stderr, ":\n");
9028 /* Record we have printed the status as of this time. */
9029 last_error_tick = input_file_stack_tick;
9032 /* Return the line at which an error occurred.
9033 The error is not necessarily associated with the current spot
9034 in the input stack, so LINE says where. LINE will have been
9035 copied from ip->lineno for the current input level.
9036 If the current level is for a file, we return LINE.
9037 But if the current level is not for a file, LINE is meaningless.
9038 In that case, we return the lineno of the innermost file. */
9041 line_for_error (line)
9047 for (i = indepth; i >= 0; ) {
9048 if (instack[i].fname != 0)
9053 line1 = instack[i].lineno;
9061 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
9063 * As things stand, nothing is ever placed in the output buffer to be
9064 * removed again except when it's KNOWN to be part of an identifier,
9065 * so flushing and moving down everything left, instead of expanding,
9069 /* You might think void was cleaner for the return type,
9070 but that would get type mismatch in check_expand in strict ANSI. */
9073 grow_outbuf (obuf, needed)
9074 register FILE_BUF *obuf;
9075 register int needed;
9080 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
9083 /* Make it at least twice as big as it is now. */
9085 /* Make it have at least 150% of the free space we will need. */
9086 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
9087 if (minsize > obuf->length)
9088 obuf->length = minsize;
9090 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
9093 obuf->bufp = p + (obuf->bufp - obuf->buf);
9099 /* Symbol table for macro names and special symbols */
9102 * install a name in the main hash table, even if it is already there.
9103 * name stops with first non alphanumeric, except leading '#'.
9104 * caller must check against redefinition if that is desired.
9105 * delete_macro () removes things installed by install () in fifo order.
9106 * this is important because of the `defined' special symbol used
9107 * in #if, and also if pushdef/popdef directives are ever implemented.
9109 * If LEN is >= 0, it is the length of the name.
9110 * Otherwise, compute the length by scanning the entire name.
9112 * If HASH is >= 0, it is the precomputed hash code.
9113 * Otherwise, compute the hash code.
9117 install (name, len, type, value, hash)
9120 enum node_type type;
9124 register HASHNODE *hp;
9125 register int i, bucket;
9126 register U_CHAR *p, *q;
9130 while (is_idchar[*p])
9136 hash = hashf (name, len, HASHSIZE);
9138 i = sizeof (HASHNODE) + len + 1;
9139 hp = (HASHNODE *) xmalloc (i);
9141 hp->bucket_hdr = &hashtab[bucket];
9142 hp->next = hashtab[bucket];
9143 hashtab[bucket] = hp;
9145 if (hp->next != NULL)
9146 hp->next->prev = hp;
9149 hp->value.cpval = value;
9150 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
9153 for (i = 0; i < len; i++)
9160 * find the most recent hash node for name name (ending with first
9161 * non-identifier char) installed by install
9163 * If LEN is >= 0, it is the length of the name.
9164 * Otherwise, compute the length by scanning the entire name.
9166 * If HASH is >= 0, it is the precomputed hash code.
9167 * Otherwise, compute the hash code.
9171 lookup (name, len, hash)
9176 register U_CHAR *bp;
9177 register HASHNODE *bucket;
9180 for (bp = name; is_idchar[*bp]; bp++) ;
9185 hash = hashf (name, len, HASHSIZE);
9187 bucket = hashtab[hash];
9189 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
9191 bucket = bucket->next;
9197 * Delete a hash node. Some weirdness to free junk from macros.
9198 * More such weirdness will have to be added if you define more hash
9199 * types that need it.
9202 /* Note that the DEFINITION of a macro is removed from the hash table
9203 but its storage is not freed. This would be a storage leak
9204 except that it is not reasonable to keep undefining and redefining
9205 large numbers of macros many times.
9206 In any case, this is necessary, because a macro can be #undef'd
9207 in the middle of reading the arguments to a call to it.
9208 If #undef freed the DEFINITION, that would crash. */
9215 if (hp->prev != NULL)
9216 hp->prev->next = hp->next;
9217 if (hp->next != NULL)
9218 hp->next->prev = hp->prev;
9220 /* Make sure that the bucket chain header that the deleted guy was
9221 on points to the right thing afterwards. */
9222 if (hp == *hp->bucket_hdr)
9223 *hp->bucket_hdr = hp->next;
9226 if (hp->type == T_MACRO) {
9227 DEFINITION *d = hp->value.defn;
9228 struct reflist *ap, *nextap;
9230 for (ap = d->pattern; ap != NULL; ap = nextap) {
9241 * return hash function on name. must be compatible with the one
9242 * computed a step at a time, elsewhere
9246 hashf (name, len, hashsize)
9247 register U_CHAR *name;
9254 r = HASHSTEP (r, *name++);
9256 return MAKE_POS (r) % hashsize;
9260 /* Dump the definition of a single macro HP to OF. */
9263 dump_single_macro (hp, of)
9264 register HASHNODE *hp;
9267 register DEFINITION *defn = hp->value.defn;
9273 /* Print the definition of the macro HP. */
9275 fprintf (of, "#define %s", hp->name);
9277 if (defn->nargs >= 0) {
9281 for (i = 0; i < defn->nargs; i++) {
9282 dump_arg_n (defn, i, of);
9283 if (i + 1 < defn->nargs)
9293 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9294 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9295 offset += ap->nchars;
9297 if (ap->nchars != 0)
9299 if (ap->stringify) {
9300 switch (ap->stringify) {
9301 case SHARP_TOKEN: fprintf (of, "#"); break;
9302 case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
9303 case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break;
9304 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break;
9308 if (ap->raw_before != 0) {
9310 switch (ap->raw_before) {
9311 case WHITE_SHARP_TOKEN:
9312 case WHITE_PERCENT_COLON_TOKEN:
9319 switch (ap->raw_before) {
9320 case SHARP_TOKEN: fprintf (of, "##"); break;
9321 case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
9322 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9323 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break;
9330 dump_arg_n (defn, ap->argno, of);
9331 if (!traditional && ap->raw_after != 0) {
9332 switch (ap->raw_after) {
9333 case SHARP_TOKEN: fprintf (of, "##"); break;
9334 case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
9335 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9336 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break;
9342 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9346 /* Dump all macro definitions as #defines to stdout. */
9353 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9354 register HASHNODE *hp;
9356 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9357 if (hp->type == T_MACRO)
9358 dump_single_macro (hp, stdout);
9363 /* Output to OF a substring of a macro definition.
9364 BASE is the beginning of the definition.
9365 Output characters START thru LENGTH.
9366 Unless traditional, discard newlines outside of strings, thus
9367 converting funny-space markers to ordinary spaces. */
9370 dump_defn_1 (base, start, length, of)
9376 U_CHAR *p = base + start;
9377 U_CHAR *limit = base + start + length;
9380 fwrite (p, sizeof (*p), length, of);
9383 if (*p == '\"' || *p =='\'') {
9384 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9385 NULL_PTR, NULL_PTR);
9386 fwrite (p, sizeof (*p), p1 - p, of);
9397 /* Print the name of argument number ARGNUM of macro definition DEFN
9399 Recall that DEFN->args.argnames contains all the arg names
9400 concatenated in reverse order with comma-space in between. */
9403 dump_arg_n (defn, argnum, of)
9408 register U_CHAR *p = defn->args.argnames;
9409 while (argnum + 1 < defn->nargs) {
9410 p = (U_CHAR *) index ((char *) p, ' ') + 1;
9414 while (*p && *p != ',') {
9420 /* Initialize syntactic classifications of characters. */
9423 initialize_char_syntax ()
9428 * Set up is_idchar and is_idstart tables. These should be
9429 * faster than saying (is_alpha (c) || c == '_'), etc.
9430 * Set up these things before calling any routines tthat
9433 for (i = 'a'; i <= 'z'; i++) {
9434 is_idchar[i - 'a' + 'A'] = 1;
9436 is_idstart[i - 'a' + 'A'] = 1;
9439 for (i = '0'; i <= '9'; i++)
9442 is_idstart['_'] = 1;
9443 is_idchar['$'] = dollars_in_ident;
9444 is_idstart['$'] = dollars_in_ident;
9446 /* horizontal space table */
9447 is_hor_space[' '] = 1;
9448 is_hor_space['\t'] = 1;
9449 is_hor_space['\v'] = 1;
9450 is_hor_space['\f'] = 1;
9451 is_hor_space['\r'] = 1;
9460 char_name['\v'] = "vertical tab";
9461 char_name['\f'] = "formfeed";
9462 char_name['\r'] = "carriage return";
9465 /* Initialize the built-in macros. */
9468 initialize_builtins (inp, outp)
9472 install ((U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
9473 install ((U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1);
9474 install ((U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1);
9475 install ((U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
9476 install ((U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
9477 install ((U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1);
9478 #ifndef NO_BUILTIN_SIZE_TYPE
9479 install ((U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
9481 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9482 install ((U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
9484 install ((U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
9485 install ((U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE,
9487 install ((U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE,
9489 install ((U_CHAR *) "__IMMEDIATE_PREFIX__", -1, T_IMMEDIATE_PREFIX_TYPE,
9491 install ((U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1);
9493 install ((U_CHAR *) "__STDC__", -1, T_CONST, "1", -1);
9494 install ((U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1);
9497 install ((U_CHAR *) "__OBJC__", -1, T_CONST, "1", -1);
9498 /* This is supplied using a -D by the compiler driver
9499 so that it is present only when truly compiling with GNU C. */
9500 /* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */
9501 install ((U_CHAR *) "__HAVE_BUILTIN_SETJMP__", -1, T_CONST, "1", -1);
9505 char directive[2048];
9506 U_CHAR *udirective = (U_CHAR *) directive;
9507 register struct directive *dp = &directive_table[0];
9508 struct tm *timebuf = timestamp ();
9510 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9511 instack[0].nominal_fname);
9512 output_line_directive (inp, outp, 0, same_file);
9513 pass_thru_directive (udirective, &udirective[strlen (directive)],
9516 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9517 output_line_directive (inp, outp, 0, same_file);
9518 pass_thru_directive (udirective, &udirective[strlen (directive)],
9521 #ifndef NO_BUILTIN_SIZE_TYPE
9522 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9523 output_line_directive (inp, outp, 0, same_file);
9524 pass_thru_directive (udirective, &udirective[strlen (directive)],
9528 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9529 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9530 output_line_directive (inp, outp, 0, same_file);
9531 pass_thru_directive (udirective, &udirective[strlen (directive)],
9535 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9536 output_line_directive (inp, outp, 0, same_file);
9537 pass_thru_directive (udirective, &udirective[strlen (directive)],
9540 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9541 monthnames[timebuf->tm_mon],
9542 timebuf->tm_mday, timebuf->tm_year + 1900);
9543 output_line_directive (inp, outp, 0, same_file);
9544 pass_thru_directive (udirective, &udirective[strlen (directive)],
9547 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9548 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9549 output_line_directive (inp, outp, 0, same_file);
9550 pass_thru_directive (udirective, &udirective[strlen (directive)],
9555 sprintf (directive, " __STDC__ 1");
9556 output_line_directive (inp, outp, 0, same_file);
9557 pass_thru_directive (udirective, &udirective[strlen (directive)],
9562 sprintf (directive, " __OBJC__ 1");
9563 output_line_directive (inp, outp, 0, same_file);
9564 pass_thru_directive (udirective, &udirective[strlen (directive)],
9571 * process a given definition string, for initialization
9572 * If STR is just an identifier, define it with value 1.
9573 * If STR has anything after the identifier, then it should
9574 * be identifier=definition.
9578 make_definition (str, op)
9583 struct directive *kt;
9586 p = buf = (U_CHAR *) str;
9587 if (!is_idstart[*p]) {
9588 error ("malformed option `-D %s'", str);
9591 while (is_idchar[*++p])
9594 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9597 p = (U_CHAR *) str; /* Error */
9600 buf = (U_CHAR *) alloca (p - buf + 4);
9601 strcpy ((char *)buf, str);
9602 strcat ((char *)buf, " 1");
9603 } else if (*p != '=') {
9604 error ("malformed option `-D %s'", str);
9608 /* Copy the entire option so we can modify it. */
9609 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9610 strncpy ((char *) buf, str, p - (U_CHAR *) str);
9611 /* Change the = to a space. */
9612 buf[p - (U_CHAR *) str] = ' ';
9613 /* Scan for any backslash-newline and remove it. */
9615 q = &buf[p - (U_CHAR *) str];
9617 if (*p == '\"' || *p == '\'') {
9618 int unterminated = 0;
9619 U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0,
9620 NULL_PTR, NULL_PTR, &unterminated);
9624 if (*p == '\\' && p[1] == '\n')
9628 } else if (*p == '\\' && p[1] == '\n')
9630 /* Change newline chars into newline-markers. */
9631 else if (*p == '\n')
9643 ip = &instack[++indepth];
9644 ip->nominal_fname = ip->fname = "*Initialization*";
9646 ip->buf = ip->bufp = buf;
9647 ip->length = strlen ((char *) buf);
9651 ip->if_stack = if_stack;
9652 ip->system_header_p = 0;
9654 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9657 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9658 do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt);
9662 /* JF, this does the work for the -U option */
9665 make_undef (str, op)
9670 struct directive *kt;
9672 ip = &instack[++indepth];
9673 ip->nominal_fname = ip->fname = "*undef*";
9675 ip->buf = ip->bufp = (U_CHAR *) str;
9676 ip->length = strlen (str);
9680 ip->if_stack = if_stack;
9681 ip->system_header_p = 0;
9683 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9686 do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt);
9690 /* Process the string STR as if it appeared as the body of a #assert.
9691 OPTION is the option name for which STR was the argument. */
9694 make_assertion (option, str)
9699 struct directive *kt;
9700 U_CHAR *buf, *p, *q;
9702 /* Copy the entire option so we can modify it. */
9703 buf = (U_CHAR *) alloca (strlen (str) + 1);
9704 strcpy ((char *) buf, str);
9705 /* Scan for any backslash-newline and remove it. */
9708 if (*p == '\\' && p[1] == '\n')
9716 if (!is_idstart[*p]) {
9717 error ("malformed option `%s %s'", option, str);
9720 while (is_idchar[*++p])
9722 SKIP_WHITE_SPACE (p);
9723 if (! (*p == 0 || *p == '(')) {
9724 error ("malformed option `%s %s'", option, str);
9728 ip = &instack[++indepth];
9729 ip->nominal_fname = ip->fname = "*Initialization*";
9731 ip->buf = ip->bufp = buf;
9732 ip->length = strlen ((char *) buf);
9736 ip->if_stack = if_stack;
9737 ip->system_header_p = 0;
9739 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9742 /* Pass NULL as output ptr to do_define since we KNOW it never does
9744 do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt);
9748 /* The previous include prefix, if any, is PREV_FILE_NAME.
9749 Allocate a new include prefix whose name is the
9750 simplified concatenation of PREFIX and NAME,
9751 with a trailing / added if needed.
9752 But return 0 if the include prefix should be ignored,
9753 e.g. because it is a duplicate of PREV_FILE_NAME. */
9755 static struct file_name_list *
9756 new_include_prefix (prev_file_name, prefix, name)
9757 struct file_name_list *prev_file_name;
9762 fatal ("Directory name missing after command line option");
9765 /* Ignore the empty string. */
9768 struct file_name_list *dir
9769 = ((struct file_name_list *)
9770 xmalloc (sizeof (struct file_name_list)
9771 + strlen (prefix) + strlen (name) + 1 /* for trailing / */));
9773 strcpy (dir->fname, prefix);
9774 strcat (dir->fname, name);
9775 len = simplify_filename (dir->fname);
9777 /* Convert directory name to a prefix. */
9778 if (dir->fname[len - 1] != '/') {
9779 if (len == 1 && dir->fname[len - 1] == '.')
9782 dir->fname[len++] = '/';
9783 dir->fname[len] = 0;
9786 /* Ignore a directory whose name matches the previous one. */
9787 if (prev_file_name && !strcmp (prev_file_name->fname, dir->fname)) {
9788 /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
9789 if (!first_bracket_include)
9790 first_bracket_include = prev_file_name;
9796 /* VMS can't stat dir prefixes, so skip these optimizations in VMS. */
9798 /* Ignore a nonexistent directory. */
9799 if (stat (len ? dir->fname : ".", &dir->st) != 0) {
9800 if (errno != ENOENT && errno != ENOTDIR)
9801 error_from_errno (dir->fname);
9806 /* Ignore a directory whose identity matches the previous one. */
9808 && INO_T_EQ (prev_file_name->st.st_ino, dir->st.st_ino)
9809 && prev_file_name->st.st_dev == dir->st.st_dev) {
9810 /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
9811 if (!first_bracket_include)
9812 first_bracket_include = prev_file_name;
9819 dir->c_system_include_path = 0;
9820 dir->got_name_map = 0;
9826 /* Append a chain of `struct file_name_list's
9827 to the end of the main include chain.
9828 FIRST is the beginning of the chain to append, and LAST is the end. */
9831 append_include_chain (first, last)
9832 struct file_name_list *first, *last;
9834 struct file_name_list *dir;
9836 if (!first || !last)
9842 last_include->next = first;
9844 if (first_bracket_include == 0)
9845 first_bracket_include = first;
9847 for (dir = first; ; dir = dir->next) {
9848 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9849 if (len > max_include_len)
9850 max_include_len = len;
9856 last_include = last;
9859 /* Add output to `deps_buffer' for the -M switch.
9860 STRING points to the text to be output.
9861 SPACER is ':' for targets, ' ' for dependencies. */
9864 deps_output (string, spacer)
9868 int size = strlen (string);
9873 #ifndef MAX_OUTPUT_COLUMNS
9874 #define MAX_OUTPUT_COLUMNS 72
9876 if (MAX_OUTPUT_COLUMNS - 1 /*spacer*/ - 2 /*` \'*/ < deps_column + size
9877 && 1 < deps_column) {
9878 bcopy (" \\\n ", &deps_buffer[deps_size], 4);
9885 if (deps_size + size + 8 > deps_allocated_size) {
9886 deps_allocated_size = (deps_size + size + 50) * 2;
9887 deps_buffer = xrealloc (deps_buffer, deps_allocated_size);
9889 if (spacer == ' ') {
9890 deps_buffer[deps_size++] = ' ';
9893 bcopy (string, &deps_buffer[deps_size], size);
9895 deps_column += size;
9896 if (spacer == ':') {
9897 deps_buffer[deps_size++] = ':';
9900 deps_buffer[deps_size] = 0;
9904 fatal (PRINTF_ALIST (msg))
9909 fprintf (stderr, "%s: ", progname);
9910 VA_START (args, msg);
9911 vfprintf (stderr, msg, args);
9913 fprintf (stderr, "\n");
9914 exit (FATAL_EXIT_CODE);
9917 /* More 'friendly' abort that prints the line and file.
9918 config.h can #define abort fancy_abort if you like that sort of thing. */
9923 fatal ("Internal gcc abort.");
9927 perror_with_name (name)
9930 fprintf (stderr, "%s: ", progname);
9931 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9936 pfatal_with_name (name)
9939 perror_with_name (name);
9943 exit (FATAL_EXIT_CODE);
9947 /* Handler for SIGPIPE. */
9951 /* If this is missing, some compilers complain. */
9954 fatal ("output pipe has been closed");
9960 fatal ("Memory exhausted.");
9968 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (size);
9975 xrealloc (old, size)
9979 register GENERIC_PTR ptr = (GENERIC_PTR) realloc (old, size);
9986 xcalloc (number, size)
9987 size_t number, size;
9989 register size_t total = number * size;
9990 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (total);
10001 size_t size = strlen (input);
10002 char *output = xmalloc (size + 1);
10003 strcpy (output, input);
10009 /* Under VMS we need to fix up the "include" specification filename so
10010 that everything following the 1st slash is changed into its correct
10011 VMS file specification. */
10014 hack_vms_include_specification (fname)
10017 register char *cp, *cp1, *cp2;
10018 int f, check_filename_before_returning;
10021 check_filename_before_returning = 0;
10023 cp = base_name (fname);
10026 * Check if we have a vax-c style '#include filename'
10027 * and add the missing .h
10029 if (!index (cp,'.'))
10032 cp2 = Local; /* initialize */
10034 /* We are trying to do a number of things here. First of all, we are
10035 trying to hammer the filenames into a standard format, such that later
10036 processing can handle them.
10038 If the file name contains something like [dir.], then it recognizes this
10039 as a root, and strips the ".]". Later processing will add whatever is
10040 needed to get things working properly.
10042 If no device is specified, then the first directory name is taken to be
10043 a device name (or a rooted logical). */
10045 /* See if we found that 1st slash */
10046 if (cp == 0) return; /* Nothing to do!!! */
10047 if (*cp != '/') return; /* Nothing to do!!! */
10048 /* Point to the UNIX filename part (which needs to be fixed!) */
10050 /* If the directory spec is not rooted, we can just copy
10051 the UNIX filename part and we are done */
10052 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
10053 if (cp[-2] != '.') {
10055 * The VMS part ends in a `]', and the preceding character is not a `.'.
10056 * We strip the `]', and then splice the two parts of the name in the
10057 * usual way. Given the default locations for include files in cccp.c,
10058 * we will only use this code if the user specifies alternate locations
10059 * with the /include (-I) switch on the command line. */
10060 cp -= 1; /* Strip "]" */
10061 cp1--; /* backspace */
10064 * The VMS part has a ".]" at the end, and this will not do. Later
10065 * processing will add a second directory spec, and this would be a syntax
10066 * error. Thus we strip the ".]", and thus merge the directory specs.
10067 * We also backspace cp1, so that it points to a '/'. This inhibits the
10068 * generation of the 000000 root directory spec (which does not belong here
10071 cp -= 2; /* Strip ".]" */
10072 cp1--; }; /* backspace */
10075 /* We drop in here if there is no VMS style directory specification yet.
10076 * If there is no device specification either, we make the first dir a
10077 * device and try that. If we do not do this, then we will be essentially
10078 * searching the users default directory (as if they did a #include "asdf.h").
10080 * Then all we need to do is to push a '[' into the output string. Later
10081 * processing will fill this in, and close the bracket.
10083 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
10084 *cp2++ = '['; /* Open the directory specification */
10087 /* at this point we assume that we have the device spec, and (at least
10088 the opening "[" for a directory specification. We may have directories
10089 specified already */
10091 /* If there are no other slashes then the filename will be
10092 in the "root" directory. Otherwise, we need to add
10093 directory specifications. */
10094 if (index (cp1, '/') == 0) {
10095 /* Just add "000000]" as the directory string */
10096 strcpy (cp2, "000000]");
10097 cp2 += strlen (cp2);
10098 check_filename_before_returning = 1; /* we might need to fool with this later */
10100 /* As long as there are still subdirectories to add, do them. */
10101 while (index (cp1, '/') != 0) {
10102 /* If this token is "." we can ignore it */
10103 if ((cp1[0] == '.') && (cp1[1] == '/')) {
10107 /* Add a subdirectory spec. Do not duplicate "." */
10108 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
10110 /* If this is ".." then the spec becomes "-" */
10111 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
10112 /* Add "-" and skip the ".." */
10117 /* Copy the subdirectory */
10118 while (*cp1 != '/') *cp2++= *cp1++;
10119 cp1++; /* Skip the "/" */
10121 /* Close the directory specification */
10122 if (cp2[-1] == '.') /* no trailing periods */
10126 /* Now add the filename */
10127 while (*cp1) *cp2++ = *cp1++;
10129 /* Now append it to the original VMS spec. */
10130 strcpy (cp, Local);
10132 /* If we put a [000000] in the filename, try to open it first. If this fails,
10133 remove the [000000], and return that name. This provides flexibility
10134 to the user in that they can use both rooted and non-rooted logical names
10135 to point to the location of the file. */
10137 if (check_filename_before_returning) {
10138 f = open (fname, O_RDONLY, 0666);
10140 /* The file name is OK as it is, so return it as is. */
10144 /* The filename did not work. Try to remove the [000000] from the name,
10146 cp = index (fname, '[');
10147 cp2 = index (fname, ']') + 1;
10148 strcpy (cp, cp2); /* this gets rid of it */
10156 /* These are the read/write replacement routines for
10157 VAX-11 "C". They make read/write behave enough
10158 like their UNIX counterparts that CCCP will work */
10161 read (fd, buf, size)
10166 #undef read /* Get back the REAL read routine */
10168 register int total = 0;
10170 /* Read until the buffer is exhausted */
10172 /* Limit each read to 32KB */
10173 i = (size > (32*1024)) ? (32*1024) : size;
10174 i = read (fd, buf, i);
10176 if (i == 0) return (total);
10179 /* Account for this read */
10188 write (fd, buf, size)
10193 #undef write /* Get back the REAL write routine */
10197 /* Limit individual writes to 32Kb */
10200 j = (i > (32*1024)) ? (32*1024) : i;
10201 if (write (fd, buf, j) < 0) return (-1);
10202 /* Account for the data written */
10209 /* The following wrapper functions supply additional arguments to the VMS
10210 I/O routines to optimize performance with file handling. The arguments
10212 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
10213 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
10214 "fop=tef"- Truncate unused portions of file when closing file.
10215 "shr=nil"- Disallow file sharing while file is open. */
10218 freopen (fname, type, oldfile)
10223 #undef freopen /* Get back the REAL fopen routine */
10224 if (strcmp (type, "w") == 0)
10225 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
10226 return freopen (fname, type, oldfile, "mbc=16");
10230 fopen (fname, type)
10234 #undef fopen /* Get back the REAL fopen routine */
10235 /* The gcc-vms-1.42 distribution's header files prototype fopen with two
10236 fixed arguments, which matches ANSI's specification but not VAXCRTL's
10237 pre-ANSI implementation. This hack circumvents the mismatch problem. */
10238 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
10241 return (*vmslib_fopen) (fname, type, "mbc=32",
10242 "deq=64", "fop=tef", "shr=nil");
10244 return (*vmslib_fopen) (fname, type, "mbc=32");
10248 open (fname, flags, prot)
10253 #undef open /* Get back the REAL open routine */
10254 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
10257 /* more VMS hackery */
10261 extern unsigned long sys$parse(), sys$search();
10263 /* Work around another library bug. If a file is located via a searchlist,
10264 and if the device it's on is not the same device as the one specified
10265 in the first element of that searchlist, then both stat() and fstat()
10266 will fail to return info about it. `errno' will be set to EVMSERR, and
10267 `vaxc$errno' will be set to SS$_NORMAL due yet another bug in stat()!
10268 We can get around this by fully parsing the filename and then passing
10269 that absolute name to stat().
10271 Without this fix, we can end up failing to find header files, which is
10272 bad enough, but then compounding the problem by reporting the reason for
10273 failure as "normal successful completion." */
10275 #undef fstat /* get back to library version */
10278 VMS_fstat (fd, statbuf)
10280 struct stat *statbuf;
10282 int result = fstat (fd, statbuf);
10287 char nambuf[NAM$C_MAXRSS+1];
10289 if ((fp = fdopen (fd, "r")) != 0 && fgetname (fp, nambuf) != 0)
10290 result = VMS_stat (nambuf, statbuf);
10291 /* No fclose(fp) here; that would close(fd) as well. */
10298 VMS_stat (name, statbuf)
10300 struct stat *statbuf;
10302 int result = stat (name, statbuf);
10308 char exp_nam[NAM$C_MAXRSS+1], /* expanded name buffer for sys$parse */
10309 res_nam[NAM$C_MAXRSS+1]; /* resultant name buffer for sys$search */
10312 fab.fab$l_fna = (char *) name;
10313 fab.fab$b_fns = (unsigned char) strlen (name);
10314 fab.fab$l_nam = (void *) &nam;
10316 nam.nam$l_esa = exp_nam, nam.nam$b_ess = sizeof exp_nam - 1;
10317 nam.nam$l_rsa = res_nam, nam.nam$b_rss = sizeof res_nam - 1;
10318 nam.nam$b_nop = NAM$M_PWD | NAM$M_NOCONCEAL;
10319 if (sys$parse (&fab) & 1)
10321 if (sys$search (&fab) & 1)
10323 res_nam[nam.nam$b_rsl] = '\0';
10324 result = stat (res_nam, statbuf);
10326 /* Clean up searchlist context cached by the system. */
10327 nam.nam$b_nop = NAM$M_SYNCHK;
10328 fab.fab$l_fna = 0, fab.fab$b_fns = 0;
10329 (void) sys$parse (&fab);