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"
49 /* By default, colon separates directories in a path. */
50 #ifndef PATH_SEPARATOR
51 #define PATH_SEPARATOR ':'
54 #include <sys/types.h>
60 /* The following symbols should be autoconfigured:
67 In the mean time, we'll get by with approximations based
68 on existing GCC configuration symbols. */
71 # ifndef HAVE_STDLIB_H
72 # define HAVE_STDLIB_H 1
74 # ifndef HAVE_UNISTD_H
75 # define HAVE_UNISTD_H 1
78 # define STDC_HEADERS 1
80 #endif /* defined (POSIX) */
82 #if defined (POSIX) || (defined (USG) && !defined (VMS))
84 # define HAVE_FCNTL_H 1
91 # if TIME_WITH_SYS_TIME
92 # include <sys/time.h>
96 # include <sys/time.h>
101 # include <sys/resource.h>
119 # define bcmp(a, b, n) memcmp (a, b, n)
122 # define bcopy(s, d, n) memcpy (d, s, n)
125 # define bzero(d, n) memset (d, 0, n)
127 #else /* !STDC_HEADERS */
131 # if !defined (BSTRING) && (defined (USG) || defined (VMS))
134 # define bcmp my_bcmp
147 # endif /* !defined (bcmp) */
150 # define bcopy my_bcopy
160 # endif /* !defined (bcopy) */
163 # define bzero my_bzero
167 register unsigned length;
172 # endif /* !defined (bzero) */
174 # endif /* !defined (BSTRING) && (defined (USG) || defined (VMS)) */
175 #endif /* ! STDC_HEADERS */
177 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
178 # define __attribute__(x)
182 # if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
183 # define PROTO(ARGS) ARGS
185 # define PROTO(ARGS) ()
189 #if defined (__STDC__) && defined (HAVE_VPRINTF)
191 # define VA_START(va_list, var) va_start (va_list, var)
192 # define PRINTF_ALIST(msg) char *msg, ...
193 # define PRINTF_DCL(msg)
194 # define PRINTF_PROTO(ARGS, m, n) PROTO (ARGS) __attribute__ ((format (printf, m, n)))
196 # include <varargs.h>
197 # define VA_START(va_list, var) va_start (va_list)
198 # define PRINTF_ALIST(msg) msg, va_alist
199 # define PRINTF_DCL(msg) char *msg; va_dcl
200 # define PRINTF_PROTO(ARGS, m, n) () __attribute__ ((format (printf, m, n)))
201 # define vfprintf(file, msg, args) \
203 char *a0 = va_arg(args, char *); \
204 char *a1 = va_arg(args, char *); \
205 char *a2 = va_arg(args, char *); \
206 char *a3 = va_arg(args, char *); \
207 fprintf (file, msg, a0, a1, a2, a3); \
211 #define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2)
212 #define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3)
213 #define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4)
219 /* VMS-specific definitions */
222 #define O_RDONLY 0 /* Open arg for Read/Only */
223 #define O_WRONLY 1 /* Open arg for Write/Only */
224 #define read(fd,buf,size) VMS_read (fd,buf,size)
225 #define write(fd,buf,size) VMS_write (fd,buf,size)
226 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
227 #define fopen(fname,mode) VMS_fopen (fname,mode)
228 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
229 #define fstat(fd,stbuf) VMS_fstat (fd,stbuf)
230 static int VMS_fstat (), VMS_stat ();
231 static int VMS_read ();
232 static int VMS_write ();
233 static int VMS_open ();
234 static FILE * VMS_fopen ();
235 static FILE * VMS_freopen ();
236 static void hack_vms_include_specification ();
237 #define INO_T_EQ(a, b) (!bcmp((char *) &(a), (char *) &(b), sizeof (a)))
238 #define INO_T_HASH(a) 0
239 #define INCLUDE_LEN_FUDGE 12 /* leave room for VMS syntax conversion */
241 #define BSTRING /* VMS/GCC supplies the bstring routines */
242 #endif /* __GNUC__ */
251 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
252 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
254 /* Find the largest host integer type and set its size and type.
255 Don't blindly use `long'; on some crazy hosts it is shorter than `int'. */
257 #ifndef HOST_BITS_PER_WIDE_INT
259 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
260 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
261 #define HOST_WIDE_INT long
263 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
264 #define HOST_WIDE_INT int
270 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
274 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
278 #define INO_T_EQ(a, b) ((a) == (b))
282 #define INO_T_HASH(a) (a)
285 /* Define a generic NULL if one hasn't already been defined. */
292 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
293 #define GENERIC_PTR void *
295 #define GENERIC_PTR char *
300 #define NULL_PTR ((GENERIC_PTR) 0)
303 #ifndef INCLUDE_LEN_FUDGE
304 #define INCLUDE_LEN_FUDGE 0
307 /* External declarations. */
309 extern char *version_string;
311 #ifndef HAVE_STRERROR
314 extern const char *const sys_errlist[];
316 extern char *sys_errlist[];
318 #else /* HAVE_STRERROR */
322 char *strerror (int,...);
324 HOST_WIDE_INT parse_escape PROTO((char **, HOST_WIDE_INT));
325 HOST_WIDE_INT parse_c_expression PROTO((char *));
331 /* Name under which this program was invoked. */
333 static char *progname;
335 /* Nonzero means use extra default include directories for C++. */
337 static int cplusplus;
339 /* Nonzero means handle cplusplus style comments */
341 static int cplusplus_comments;
343 /* Nonzero means handle #import, for objective C. */
347 /* Nonzero means this is an assembly file, and allow
348 unknown directives, which could be comments. */
352 /* Current maximum length of directory names in the search path
353 for include files. (Altered as we get more of them.) */
355 static int max_include_len;
357 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
359 static int for_lint = 0;
361 /* Nonzero means copy comments into the output file. */
363 static int put_out_comments = 0;
365 /* Nonzero means don't process the ANSI trigraph sequences. */
367 static int no_trigraphs = 0;
369 /* Nonzero means print the names of included files rather than
370 the preprocessed output. 1 means just the #include "...",
371 2 means #include <...> as well. */
373 static int print_deps = 0;
375 /* Nonzero if missing .h files in -M output are assumed to be generated
376 files and not errors. */
378 static int print_deps_missing_files = 0;
380 /* Nonzero means print names of header files (-H). */
382 static int print_include_names = 0;
384 /* Nonzero means don't output line number information. */
386 static int no_line_directives;
388 /* Nonzero means output the text in failing conditionals,
389 inside #failed ... #endfailed. */
391 static int output_conditionals;
393 /* dump_only means inhibit output of the preprocessed text
394 and instead output the definitions of all user-defined
395 macros in a form suitable for use as input to cccp.
396 dump_names means pass #define and the macro name through to output.
397 dump_definitions means pass the whole definition (plus #define) through
400 static enum {dump_none, dump_only, dump_names, dump_definitions}
401 dump_macros = dump_none;
403 /* Nonzero means pass all #define and #undef directives which we actually
404 process through to the output stream. This feature is used primarily
405 to allow cc1 to record the #defines and #undefs for the sake of
406 debuggers which understand about preprocessor macros, but it may
407 also be useful with -E to figure out how symbols are defined, and
408 where they are defined. */
409 static int debug_output = 0;
411 /* Nonzero indicates special processing used by the pcp program. The
412 special effects of this mode are:
414 Inhibit all macro expansion, except those inside #if directives.
416 Process #define directives normally, and output their contents
419 Output preconditions to pcp_outfile indicating all the relevant
420 preconditions for use of this file in a later cpp run.
422 static FILE *pcp_outfile;
424 /* Nonzero means we are inside an IF during a -pcp run. In this mode
425 macro expansion is done, and preconditions are output for all macro
426 uses requiring them. */
427 static int pcp_inside_if;
429 /* Nonzero means never to include precompiled files.
430 This is 1 since there's no way now to make precompiled files,
431 so it's not worth testing for them. */
432 static int no_precomp = 1;
434 /* Nonzero means give all the error messages the ANSI standard requires. */
438 /* Nonzero means try to make failure to fit ANSI C an error. */
440 static int pedantic_errors;
442 /* Nonzero means don't print warning messages. -w. */
444 static int inhibit_warnings = 0;
446 /* Nonzero means warn if slash-star appears in a slash-star comment,
447 or if newline-backslash appears in a slash-slash comment. */
449 static int warn_comments;
451 /* Nonzero means warn if a macro argument is (or would be)
452 stringified with -traditional. */
454 static int warn_stringify;
456 /* Nonzero means warn if there are any trigraphs. */
458 static int warn_trigraphs;
460 /* Nonzero means warn if #import is used. */
462 static int warn_import = 1;
464 /* Nonzero means turn warnings into errors. */
466 static int warnings_are_errors;
468 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
472 /* Nonzero causes output not to be done,
473 but directives such as #define that have side effects
476 static int no_output;
478 /* Nonzero means this file was included with a -imacros or -include
479 command line and should not be recorded as an include file. */
481 static int no_record_file;
483 /* Nonzero means that we have finished processing the command line options.
484 This flag is used to decide whether or not to issue certain errors
487 static int done_initializing = 0;
489 /* Line where a newline was first seen in a string constant. */
491 static int multiline_string_line = 0;
493 /* I/O buffer structure.
494 The `fname' field is nonzero for source files and #include files
495 and for the dummy text used for -D and -U.
496 It is zero for rescanning results of macro expansion
497 and for expanding macro arguments. */
498 #define INPUT_STACK_MAX 400
499 static struct file_buf {
501 /* Filename specified with #line directive. */
503 /* Include file description. */
504 struct include_file *inc;
505 /* Record where in the search path this file was found.
506 For #include_next. */
507 struct file_name_list *dir;
512 /* Macro that this level is the expansion of.
513 Included so that we can reenable the macro
514 at the end of this level. */
515 struct hashnode *macro;
516 /* Value of if_stack at start of this file.
517 Used to prohibit unmatched #endif (etc) in an include file. */
518 struct if_stack *if_stack;
519 /* Object to be freed at end of input at this level. */
521 /* True if this is a header file included using <FILENAME>. */
522 char system_header_p;
523 } instack[INPUT_STACK_MAX];
525 static int last_error_tick; /* Incremented each time we print it. */
526 static int input_file_stack_tick; /* Incremented when the status changes. */
528 /* Current nesting level of input sources.
529 `instack[indepth]' is the level currently being read. */
530 static int indepth = -1;
531 #define CHECK_DEPTH(code) \
532 if (indepth >= (INPUT_STACK_MAX - 1)) \
534 error_with_line (line_for_error (instack[indepth].lineno), \
535 "macro or `#include' recursion too deep"); \
539 /* Current depth in #include directives that use <...>. */
540 static int system_include_depth = 0;
542 typedef struct file_buf FILE_BUF;
544 /* The output buffer. Its LENGTH field is the amount of room allocated
545 for the buffer, not the number of chars actually present. To get
546 that, subtract outbuf.buf from outbuf.bufp. */
548 #define OUTBUF_SIZE 10 /* initial size of output buffer */
549 static FILE_BUF outbuf;
551 /* Grow output buffer OBUF points at
552 so it can hold at least NEEDED more chars. */
554 #define check_expand(OBUF, NEEDED) \
555 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
556 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
558 struct file_name_list
560 struct file_name_list *next;
561 /* If the following is 1, it is a C-language system include
563 int c_system_include_path;
564 /* Mapping of file names for this directory. */
565 struct file_name_map *name_map;
566 /* Non-zero if name_map is valid. */
568 /* The include directory status. */
570 /* The include prefix: "" denotes the working directory,
571 otherwise fname must end in '/'.
572 The actual size is dynamically allocated. */
576 /* #include "file" looks in source file dir, then stack. */
577 /* #include <file> just looks in the stack. */
578 /* -I directories are added to the end, then the defaults are added. */
580 static struct default_include {
581 char *fname; /* The name of the directory. */
582 int cplusplus; /* Only look here if we're compiling C++. */
583 int cxx_aware; /* Includes in this directory don't need to
584 be wrapped in extern "C" when compiling
586 } include_defaults_array[]
587 #ifdef INCLUDE_DEFAULTS
591 /* Pick up GNU C++ specific include files. */
592 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
593 { OLD_GPLUSPLUS_INCLUDE_DIR, 1, 1 },
595 /* This is the dir for fixincludes. Put it just before
596 the files that we fix. */
597 { GCC_INCLUDE_DIR, 0, 0 },
598 /* For cross-compilation, this dir name is generated
599 automatically in Makefile.in. */
600 { CROSS_INCLUDE_DIR, 0, 0 },
601 #ifdef TOOL_INCLUDE_DIR
602 /* This is another place that the target system's headers might be. */
603 { TOOL_INCLUDE_DIR, 0, 0 },
605 #else /* not CROSS_COMPILE */
606 #ifdef LOCAL_INCLUDE_DIR
607 /* This should be /usr/local/include and should come before
608 the fixincludes-fixed header files. */
609 { LOCAL_INCLUDE_DIR, 0, 1 },
611 #ifdef TOOL_INCLUDE_DIR
612 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
613 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
614 { TOOL_INCLUDE_DIR, 0, 0 },
616 /* This is the dir for fixincludes. Put it just before
617 the files that we fix. */
618 { GCC_INCLUDE_DIR, 0, 0 },
619 /* Some systems have an extra dir of include files. */
620 #ifdef SYSTEM_INCLUDE_DIR
621 { SYSTEM_INCLUDE_DIR, 0, 0 },
623 { STANDARD_INCLUDE_DIR, 0, 0 },
624 #endif /* not CROSS_COMPILE */
627 #endif /* no INCLUDE_DEFAULTS */
629 /* The code looks at the defaults through this pointer, rather than through
630 the constant structure above. This pointer gets changed if an environment
631 variable specifies other defaults. */
632 static struct default_include *include_defaults = include_defaults_array;
634 static struct file_name_list *include = 0; /* First dir to search */
635 /* First dir to search for <file> */
636 /* This is the first element to use for #include <...>.
637 If it is 0, use the entire chain for such includes. */
638 static struct file_name_list *first_bracket_include = 0;
639 /* This is the first element in the chain that corresponds to
640 a directory of system header files. */
641 static struct file_name_list *first_system_include = 0;
642 static struct file_name_list *last_include = 0; /* Last in chain */
644 /* Chain of include directories to put at the end of the other chain. */
645 static struct file_name_list *after_include = 0;
646 static struct file_name_list *last_after_include = 0; /* Last in chain */
648 /* Chain to put at the start of the system include files. */
649 static struct file_name_list *before_system = 0;
650 static struct file_name_list *last_before_system = 0; /* Last in chain */
652 /* Directory prefix that should replace `/usr' in the standard
653 include file directories. */
654 static char *include_prefix;
656 /* Maintain and search list of included files. */
658 struct include_file {
659 struct include_file *next; /* for include_hashtab */
660 struct include_file *next_ino; /* for include_ino_hashtab */
662 /* If the following is the empty string, it means #pragma once
663 was seen in this include file, or #import was applied to the file.
664 Otherwise, if it is nonzero, it is a macro name.
665 Don't include the file again if that macro is defined. */
666 U_CHAR *control_macro;
667 /* Nonzero if the dependency on this include file has been output. */
672 /* Hash tables of files already included with #include or #import.
673 include_hashtab is by full name; include_ino_hashtab is by inode number. */
675 #define INCLUDE_HASHSIZE 61
676 static struct include_file *include_hashtab[INCLUDE_HASHSIZE];
677 static struct include_file *include_ino_hashtab[INCLUDE_HASHSIZE];
679 /* Global list of strings read in from precompiled files. This list
680 is kept in the order the strings are read in, with new strings being
681 added at the end through stringlist_tailp. We use this list to output
682 the strings at the end of the run.
684 static STRINGDEF *stringlist;
685 static STRINGDEF **stringlist_tailp = &stringlist;
688 /* Structure returned by create_definition */
689 typedef struct macrodef MACRODEF;
692 struct definition *defn;
697 enum sharp_token_type {
698 NO_SHARP_TOKEN = 0, /* token not present */
700 SHARP_TOKEN = '#', /* token spelled with # only */
701 WHITE_SHARP_TOKEN, /* token spelled with # and white space */
703 PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
704 WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
707 /* Structure allocated for every #define. For a simple replacement
710 nargs = -1, the `pattern' list is null, and the expansion is just
711 the replacement text. Nargs = 0 means a functionlike macro with no args,
713 #define getchar() getc (stdin) .
714 When there are args, the expansion is the replacement text with the
715 args squashed out, and the reflist is a list describing how to
716 build the output from the input: e.g., "3 chars, then the 1st arg,
717 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
718 The chars here come from the expansion. Whatever is left of the
719 expansion after the last arg-occurrence is copied after that arg.
720 Note that the reflist can be arbitrarily long---
721 its length depends on the number of times the arguments appear in
722 the replacement text, not how many args there are. Example:
723 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
725 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
726 where (x, y) means (nchars, argno). */
728 typedef struct definition DEFINITION;
731 int length; /* length of expansion string */
732 int predefined; /* True if the macro was builtin or */
733 /* came from the command line */
735 int line; /* Line number of definition */
736 char *file; /* File of definition */
737 char rest_args; /* Nonzero if last arg. absorbs the rest */
739 struct reflist *next;
741 enum sharp_token_type stringify; /* set if a # operator before arg */
742 enum sharp_token_type raw_before; /* set if a ## operator before arg */
743 enum sharp_token_type raw_after; /* set if a ## operator after arg */
745 char rest_args; /* Nonzero if this arg. absorbs the rest */
746 int nchars; /* Number of literal chars to copy before
747 this arg occurrence. */
748 int argno; /* Number of arg to substitute (origin-0) */
751 /* Names of macro args, concatenated in reverse order
752 with comma-space between them.
753 The only use of this is that we warn on redefinition
754 if this differs between the old and new definitions. */
759 /* different kinds of things that can appear in the value field
760 of a hash node. Actually, this may be useless now. */
768 * special extension string that can be added to the last macro argument to
769 * allow it to absorb the "rest" of the arguments when expanded. Ex:
770 * #define wow(a, b...) process (b, a, b)
771 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
772 * { wow (one, two); } -> { process (two, one, two); }
773 * if this "rest_arg" is used with the concat token '##' and if it is not
774 * supplied then the token attached to with ## will not be outputted. Ex:
775 * #define wow (a, b...) process (b ## , a, ## b)
776 * { wow (1, 2); } -> { process (2, 1, 2); }
777 * { wow (one); } -> { process (one); {
779 static char rest_extension[] = "...";
780 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
782 /* The structure of a node in the hash table. The hash table
783 has entries for all tokens defined by #define directives (type T_MACRO),
784 plus some special tokens like __LINE__ (these each have their own
785 type, and the appropriate code is run when that type of node is seen.
786 It does not contain control words like "#define", which are recognized
787 by a separate piece of code. */
789 /* different flavors of hash nodes --- also used in keyword table */
791 T_DEFINE = 1, /* the `#define' keyword */
792 T_INCLUDE, /* the `#include' keyword */
793 T_INCLUDE_NEXT, /* the `#include_next' keyword */
794 T_IMPORT, /* the `#import' keyword */
795 T_IFDEF, /* the `#ifdef' keyword */
796 T_IFNDEF, /* the `#ifndef' keyword */
797 T_IF, /* the `#if' keyword */
798 T_ELSE, /* `#else' */
799 T_PRAGMA, /* `#pragma' */
800 T_ELIF, /* `#elif' */
801 T_UNDEF, /* `#undef' */
802 T_LINE, /* `#line' */
803 T_ERROR, /* `#error' */
804 T_WARNING, /* `#warning' */
805 T_ENDIF, /* `#endif' */
806 T_SCCS, /* `#sccs', used on system V. */
807 T_IDENT, /* `#ident', used on system V. */
808 T_ASSERT, /* `#assert', taken from system V. */
809 T_UNASSERT, /* `#unassert', taken from system V. */
810 T_SPECLINE, /* special symbol `__LINE__' */
811 T_DATE, /* `__DATE__' */
812 T_FILE, /* `__FILE__' */
813 T_BASE_FILE, /* `__BASE_FILE__' */
814 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
815 T_VERSION, /* `__VERSION__' */
816 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
817 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
818 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
819 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
820 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
821 T_IMMEDIATE_PREFIX_TYPE, /* `__IMMEDIATE_PREFIX__' */
822 T_TIME, /* `__TIME__' */
823 T_CONST, /* Constant value, used by `__STDC__' */
824 T_MACRO, /* macro defined by `#define' */
825 T_DISABLED, /* macro temporarily turned off for rescan */
826 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
827 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
828 T_UNUSED /* Used for something not defined. */
832 struct hashnode *next; /* double links for easy deletion */
833 struct hashnode *prev;
834 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
835 chain is kept, in case the node is the head
836 of the chain and gets deleted. */
837 enum node_type type; /* type of special token */
838 int length; /* length of token, for quick comparison */
839 U_CHAR *name; /* the actual name */
840 union hashval value; /* pointer to expansion, or whatever */
843 typedef struct hashnode HASHNODE;
845 /* Some definitions for the hash table. The hash function MUST be
846 computed as shown in hashf () below. That is because the rescan
847 loop computes the hash value `on the fly' for most tokens,
848 in order to avoid the overhead of a lot of procedure calls to
849 the hashf () function. Hashf () only exists for the sake of
850 politeness, for use when speed isn't so important. */
852 #define HASHSIZE 1403
853 static HASHNODE *hashtab[HASHSIZE];
854 #define HASHSTEP(old, c) ((old << 2) + c)
855 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
857 /* Symbols to predefine. */
859 #ifdef CPP_PREDEFINES
860 static char *predefs = CPP_PREDEFINES;
862 static char *predefs = "";
865 /* We let tm.h override the types used here, to handle trivial differences
866 such as the choice of unsigned int or long unsigned int for size_t.
867 When machines start needing nontrivial differences in the size type,
868 it would be best to do something here to figure out automatically
869 from other information what type to use. */
871 /* The string value for __SIZE_TYPE__. */
874 #define SIZE_TYPE "long unsigned int"
877 /* The string value for __PTRDIFF_TYPE__. */
880 #define PTRDIFF_TYPE "long int"
883 /* The string value for __WCHAR_TYPE__. */
886 #define WCHAR_TYPE "int"
888 char * wchar_type = WCHAR_TYPE;
891 /* The string value for __USER_LABEL_PREFIX__ */
893 #ifndef USER_LABEL_PREFIX
894 #define USER_LABEL_PREFIX ""
897 /* The string value for __REGISTER_PREFIX__ */
899 #ifndef REGISTER_PREFIX
900 #define REGISTER_PREFIX ""
903 /* The string value for __IMMEDIATE_PREFIX__ */
905 #ifndef IMMEDIATE_PREFIX
906 #define IMMEDIATE_PREFIX ""
909 /* In the definition of a #assert name, this structure forms
910 a list of the individual values asserted.
911 Each value is itself a list of "tokens".
912 These are strings that are compared by name. */
914 struct tokenlist_list {
915 struct tokenlist_list *next;
916 struct arglist *tokens;
919 struct assertion_hashnode {
920 struct assertion_hashnode *next; /* double links for easy deletion */
921 struct assertion_hashnode *prev;
922 /* also, a back pointer to this node's hash
923 chain is kept, in case the node is the head
924 of the chain and gets deleted. */
925 struct assertion_hashnode **bucket_hdr;
926 int length; /* length of token, for quick comparison */
927 U_CHAR *name; /* the actual name */
928 /* List of token-sequences. */
929 struct tokenlist_list *value;
932 typedef struct assertion_hashnode ASSERTION_HASHNODE;
934 /* Some definitions for the hash table. The hash function MUST be
935 computed as shown in hashf below. That is because the rescan
936 loop computes the hash value `on the fly' for most tokens,
937 in order to avoid the overhead of a lot of procedure calls to
938 the hashf function. hashf only exists for the sake of
939 politeness, for use when speed isn't so important. */
941 #define ASSERTION_HASHSIZE 37
942 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
944 /* Nonzero means inhibit macroexpansion of what seem to be
945 assertion tests, in rescan. For #if. */
946 static int assertions_flag;
948 /* `struct directive' defines one #-directive, including how to handle it. */
950 #define DO_PROTO PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *))
953 int length; /* Length of name */
954 int (*func) DO_PROTO; /* Function to handle directive */
955 char *name; /* Name of directive */
956 enum node_type type; /* Code which describes which directive. */
957 char angle_brackets; /* Nonzero => <...> is special. */
958 char traditional_comments; /* Nonzero: keep comments if -traditional. */
959 char pass_thru; /* Copy directive to output:
960 if 1, copy if dumping definitions;
961 if 2, always copy, after preprocessing. */
964 /* These functions are declared to return int instead of void since they
965 are going to be placed in the table and some old compilers have trouble with
966 pointers to functions returning void. */
968 static int do_assert DO_PROTO;
969 static int do_define DO_PROTO;
970 static int do_elif DO_PROTO;
971 static int do_else DO_PROTO;
972 static int do_endif DO_PROTO;
973 static int do_error DO_PROTO;
974 static int do_ident DO_PROTO;
975 static int do_if DO_PROTO;
976 static int do_include DO_PROTO;
977 static int do_line DO_PROTO;
978 static int do_pragma DO_PROTO;
979 #ifdef SCCS_DIRECTIVE
980 static int do_sccs DO_PROTO;
982 static int do_unassert DO_PROTO;
983 static int do_undef DO_PROTO;
984 static int do_warning DO_PROTO;
985 static int do_xifdef DO_PROTO;
987 /* Here is the actual list of #-directives, most-often-used first. */
989 static struct directive directive_table[] = {
990 { 6, do_define, "define", T_DEFINE, 0, 1, 1},
991 { 2, do_if, "if", T_IF},
992 { 5, do_xifdef, "ifdef", T_IFDEF},
993 { 6, do_xifdef, "ifndef", T_IFNDEF},
994 { 5, do_endif, "endif", T_ENDIF},
995 { 4, do_else, "else", T_ELSE},
996 { 4, do_elif, "elif", T_ELIF},
997 { 4, do_line, "line", T_LINE},
998 { 7, do_include, "include", T_INCLUDE, 1},
999 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
1000 { 6, do_include, "import", T_IMPORT, 1},
1001 { 5, do_undef, "undef", T_UNDEF},
1002 { 5, do_error, "error", T_ERROR},
1003 { 7, do_warning, "warning", T_WARNING},
1004 #ifdef SCCS_DIRECTIVE
1005 { 4, do_sccs, "sccs", T_SCCS},
1007 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 2},
1008 { 5, do_ident, "ident", T_IDENT},
1009 { 6, do_assert, "assert", T_ASSERT},
1010 { 8, do_unassert, "unassert", T_UNASSERT},
1011 { -1, 0, "", T_UNUSED},
1014 /* When a directive handler is called,
1015 this points to the # (or the : of the %:) that started the directive. */
1016 U_CHAR *directive_start;
1018 /* table to tell if char can be part of a C identifier. */
1019 U_CHAR is_idchar[256];
1020 /* table to tell if char can be first char of a c identifier. */
1021 U_CHAR is_idstart[256];
1022 /* table to tell if c is horizontal space. */
1023 U_CHAR is_hor_space[256];
1024 /* table to tell if c is horizontal or vertical space. */
1025 static U_CHAR is_space[256];
1026 /* names of some characters */
1027 static char *char_name[256];
1029 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
1030 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
1032 static int errors = 0; /* Error counter for exit code */
1034 /* Name of output file, for error messages. */
1035 static char *out_fname;
1038 /* Stack of conditionals currently in progress
1039 (including both successful and failing conditionals). */
1042 struct if_stack *next; /* for chaining to the next stack frame */
1043 char *fname; /* copied from input when frame is made */
1044 int lineno; /* similarly */
1045 int if_succeeded; /* true if a leg of this if-group
1046 has been passed through rescan */
1047 U_CHAR *control_macro; /* For #ifndef at start of file,
1048 this is the macro name tested. */
1049 enum node_type type; /* type of last directive seen in this group */
1051 typedef struct if_stack IF_STACK_FRAME;
1052 static IF_STACK_FRAME *if_stack = NULL;
1054 /* Buffer of -M output. */
1055 static char *deps_buffer;
1057 /* Number of bytes allocated in above. */
1058 static int deps_allocated_size;
1060 /* Number of bytes used. */
1061 static int deps_size;
1063 /* Number of bytes since the last newline. */
1064 static int deps_column;
1066 /* Nonzero means -I- has been seen,
1067 so don't look for #include "foo" the source-file directory. */
1068 static int ignore_srcdir;
1070 static int safe_read PROTO((int, char *, int));
1071 static void safe_write PROTO((int, char *, int));
1073 int main PROTO((int, char **));
1075 static void path_include PROTO((char *));
1077 static U_CHAR *index0 PROTO((U_CHAR *, int, size_t));
1079 static void trigraph_pcp PROTO((FILE_BUF *));
1081 static void newline_fix PROTO((U_CHAR *));
1082 static void name_newline_fix PROTO((U_CHAR *));
1084 static char *get_lintcmd PROTO((U_CHAR *, U_CHAR *, U_CHAR **, int *, int *));
1086 static void rescan PROTO((FILE_BUF *, int));
1088 static FILE_BUF expand_to_temp_buffer PROTO((U_CHAR *, U_CHAR *, int, int));
1090 static int handle_directive PROTO((FILE_BUF *, FILE_BUF *));
1092 static struct tm *timestamp PROTO((void));
1093 static void special_symbol PROTO((HASHNODE *, FILE_BUF *));
1095 static int is_system_include PROTO((char *));
1096 static char *base_name PROTO((char *));
1097 static int absolute_filename PROTO((char *));
1098 static size_t simplify_filename PROTO((char *));
1100 static char *read_filename_string PROTO((int, FILE *));
1101 static struct file_name_map *read_name_map PROTO((char *));
1102 static int open_include_file PROTO((char *, struct file_name_list *, U_CHAR *, struct include_file **));
1103 static char *remap_include_file PROTO((char *, struct file_name_list *));
1104 static int lookup_ino_include PROTO((struct include_file *));
1106 static void finclude PROTO((int, struct include_file *, FILE_BUF *, int, struct file_name_list *));
1107 static void record_control_macro PROTO((struct include_file *, U_CHAR *));
1109 static char *check_precompiled PROTO((int, struct stat *, char *, char **));
1110 static int check_preconditions PROTO((char *));
1111 static void pcfinclude PROTO((U_CHAR *, U_CHAR *, U_CHAR *, FILE_BUF *));
1112 static void pcstring_used PROTO((HASHNODE *));
1113 static void write_output PROTO((void));
1114 static void pass_thru_directive PROTO((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *));
1116 static MACRODEF create_definition PROTO((U_CHAR *, U_CHAR *, FILE_BUF *));
1118 static int check_macro_name PROTO((U_CHAR *, char *));
1119 static int compare_defs PROTO((DEFINITION *, DEFINITION *));
1120 static int comp_def_part PROTO((int, U_CHAR *, int, U_CHAR *, int, int));
1122 static DEFINITION *collect_expansion PROTO((U_CHAR *, U_CHAR *, int, struct arglist *));
1124 int check_assertion PROTO((U_CHAR *, int, int, struct arglist *));
1125 static int compare_token_lists PROTO((struct arglist *, struct arglist *));
1127 static struct arglist *read_token_list PROTO((U_CHAR **, U_CHAR *, int *));
1128 static void free_token_list PROTO((struct arglist *));
1130 static ASSERTION_HASHNODE *assertion_install PROTO((U_CHAR *, int, int));
1131 static ASSERTION_HASHNODE *assertion_lookup PROTO((U_CHAR *, int, int));
1132 static void delete_assertion PROTO((ASSERTION_HASHNODE *));
1134 static void do_once PROTO((void));
1136 static HOST_WIDE_INT eval_if_expression PROTO((U_CHAR *, int));
1137 static void conditional_skip PROTO((FILE_BUF *, int, enum node_type, U_CHAR *, FILE_BUF *));
1138 static void skip_if_group PROTO((FILE_BUF *, int, FILE_BUF *));
1139 static void validate_else PROTO((U_CHAR *, U_CHAR *));
1141 static U_CHAR *skip_to_end_of_comment PROTO((FILE_BUF *, int *, int));
1142 static U_CHAR *skip_quoted_string PROTO((U_CHAR *, U_CHAR *, int, int *, int *, int *));
1143 static char *quote_string PROTO((char *, char *));
1144 static U_CHAR *skip_paren_group PROTO((FILE_BUF *));
1146 /* Last arg to output_line_directive. */
1147 enum file_change_code {same_file, enter_file, leave_file};
1148 static void output_line_directive PROTO((FILE_BUF *, FILE_BUF *, int, enum file_change_code));
1150 static void macroexpand PROTO((HASHNODE *, FILE_BUF *));
1153 static char *macarg PROTO((struct argdata *, int));
1155 static U_CHAR *macarg1 PROTO((U_CHAR *, U_CHAR *, int *, int *, int *, int));
1157 static int discard_comments PROTO((U_CHAR *, int, int));
1159 static int change_newlines PROTO((U_CHAR *, int));
1161 char *my_strerror PROTO((int));
1162 void error PRINTF_PROTO_1((char *, ...));
1163 static void verror PROTO((char *, va_list));
1164 static void error_from_errno PROTO((char *));
1165 void warning PRINTF_PROTO_1((char *, ...));
1166 static void vwarning PROTO((char *, va_list));
1167 static void error_with_line PRINTF_PROTO_2((int, char *, ...));
1168 static void verror_with_line PROTO((int, char *, va_list));
1169 static void vwarning_with_line PROTO((int, char *, va_list));
1170 static void warning_with_line PRINTF_PROTO_2((int, char *, ...));
1171 void pedwarn PRINTF_PROTO_1((char *, ...));
1172 void pedwarn_with_line PRINTF_PROTO_2((int, char *, ...));
1173 static void pedwarn_with_file_and_line PRINTF_PROTO_3((char *, int, char *, ...));
1175 static void print_containing_files PROTO((void));
1177 static int line_for_error PROTO((int));
1178 static int grow_outbuf PROTO((FILE_BUF *, int));
1180 static HASHNODE *install PROTO((U_CHAR *, int, enum node_type, char *, int));
1181 HASHNODE *lookup PROTO((U_CHAR *, int, int));
1182 static void delete_macro PROTO((HASHNODE *));
1183 static int hashf PROTO((U_CHAR *, int, int));
1185 static void dump_single_macro PROTO((HASHNODE *, FILE *));
1186 static void dump_all_macros PROTO((void));
1187 static void dump_defn_1 PROTO((U_CHAR *, int, int, FILE *));
1188 static void dump_arg_n PROTO((DEFINITION *, int, FILE *));
1190 static void initialize_char_syntax PROTO((void));
1191 static void initialize_builtins PROTO((FILE_BUF *, FILE_BUF *));
1193 static void make_definition PROTO((char *, FILE_BUF *));
1194 static void make_undef PROTO((char *, FILE_BUF *));
1196 static void make_assertion PROTO((char *, char *));
1198 static struct file_name_list *new_include_prefix PROTO((struct file_name_list *, char *, char *));
1199 static void append_include_chain PROTO((struct file_name_list *, struct file_name_list *));
1201 static void deps_output PROTO((char *, int));
1203 static void fatal PRINTF_PROTO_1((char *, ...)) __attribute__ ((noreturn));
1204 void fancy_abort PROTO((void)) __attribute__ ((noreturn));
1205 static void perror_with_name PROTO((char *));
1206 static void pfatal_with_name PROTO((char *)) __attribute__ ((noreturn));
1207 static void pipe_closed PROTO((int)) __attribute__ ((noreturn));
1209 static void memory_full PROTO((void)) __attribute__ ((noreturn));
1210 GENERIC_PTR xmalloc PROTO((size_t));
1211 static GENERIC_PTR xrealloc PROTO((GENERIC_PTR, size_t));
1212 static GENERIC_PTR xcalloc PROTO((size_t, size_t));
1213 static char *savestring PROTO((char *));
1215 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1216 retrying if necessary. Return a negative value if an error occurs,
1217 otherwise return the actual number of bytes read,
1218 which must be LEN unless end-of-file was reached. */
1221 safe_read (desc, ptr, len)
1228 int nchars = read (desc, ptr, left);
1245 /* Write LEN bytes at PTR to descriptor DESC,
1246 retrying if necessary, and treating any real error as fatal. */
1249 safe_write (desc, ptr, len)
1255 int written = write (desc, ptr, len);
1262 pfatal_with_name (out_fname);
1279 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1280 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1281 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1282 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1283 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1285 /* Record the option used with each element of pend_assertions.
1286 This is preparation for supporting more than one option for making
1288 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1289 int inhibit_predefs = 0;
1290 int no_standard_includes = 0;
1291 int no_standard_cplusplus_includes = 0;
1292 int missing_newline = 0;
1294 /* Non-0 means don't output the preprocessed program. */
1295 int inhibit_output = 0;
1296 /* Non-0 means -v, so print the full set of include dirs. */
1299 /* File name which deps are being written to.
1300 This is 0 if deps are being written to stdout. */
1301 char *deps_file = 0;
1302 /* Fopen file mode to open deps_file with. */
1303 char *deps_mode = "a";
1304 /* Stream on which to print the dependency information. */
1305 FILE *deps_stream = 0;
1306 /* Target-name to write with the dependency information. */
1307 char *deps_target = 0;
1310 /* Get rid of any avoidable limit on stack size. */
1314 /* Set the stack limit huge so that alloca (particularly stringtab
1315 in dbxread.c) does not fail. */
1316 getrlimit (RLIMIT_STACK, &rlim);
1317 rlim.rlim_cur = rlim.rlim_max;
1318 setrlimit (RLIMIT_STACK, &rlim);
1320 #endif /* RLIMIT_STACK defined */
1323 signal (SIGPIPE, pipe_closed);
1326 progname = base_name (argv[0]);
1330 /* Remove extension from PROGNAME. */
1332 char *s = progname = savestring (progname);
1334 if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
1335 if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
1336 && (p[1] == 'e' || p[1] == 'E')
1337 && (p[2] == 'x' || p[2] == 'X')
1338 && (p[3] == 'e' || p[3] == 'E')
1347 /* Initialize is_idchar. */
1348 initialize_char_syntax ();
1350 no_line_directives = 0;
1352 dump_macros = dump_none;
1355 cplusplus_comments = 1;
1357 bzero ((char *) pend_files, argc * sizeof (char *));
1358 bzero ((char *) pend_defs, argc * sizeof (char *));
1359 bzero ((char *) pend_undefs, argc * sizeof (char *));
1360 bzero ((char *) pend_assertions, argc * sizeof (char *));
1361 bzero ((char *) pend_includes, argc * sizeof (char *));
1363 /* Process switches and find input file name. */
1365 for (i = 1; i < argc; i++) {
1366 if (argv[i][0] != '-') {
1367 if (out_fname != NULL)
1368 fatal ("Usage: %s [switches] input output", argv[0]);
1369 else if (in_fname != NULL)
1370 out_fname = argv[i];
1374 switch (argv[i][1]) {
1377 if (!strcmp (argv[i], "-include")) {
1379 fatal ("Filename missing after `-include' option");
1381 simplify_filename (pend_includes[i] = argv[++i]);
1383 if (!strcmp (argv[i], "-imacros")) {
1385 fatal ("Filename missing after `-imacros' option");
1387 simplify_filename (pend_files[i] = argv[++i]);
1389 if (!strcmp (argv[i], "-iprefix")) {
1391 fatal ("Filename missing after `-iprefix' option");
1393 include_prefix = argv[++i];
1395 if (!strcmp (argv[i], "-ifoutput")) {
1396 output_conditionals = 1;
1398 if (!strcmp (argv[i], "-isystem")) {
1399 struct file_name_list *dirtmp;
1401 if (! (dirtmp = new_include_prefix (NULL_PTR, "", argv[++i])))
1403 dirtmp->c_system_include_path = 1;
1405 if (before_system == 0)
1406 before_system = dirtmp;
1408 last_before_system->next = dirtmp;
1409 last_before_system = dirtmp; /* Tail follows the last one */
1411 /* Add directory to end of path for includes,
1412 with the default prefix at the front of its name. */
1413 if (!strcmp (argv[i], "-iwithprefix")) {
1414 struct file_name_list *dirtmp;
1417 if (include_prefix != 0)
1418 prefix = include_prefix;
1420 prefix = savestring (GCC_INCLUDE_DIR);
1421 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1422 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1423 prefix[strlen (prefix) - 7] = 0;
1426 if (! (dirtmp = new_include_prefix (NULL_PTR, prefix, argv[++i])))
1429 if (after_include == 0)
1430 after_include = dirtmp;
1432 last_after_include->next = dirtmp;
1433 last_after_include = dirtmp; /* Tail follows the last one */
1435 /* Add directory to main path for includes,
1436 with the default prefix at the front of its name. */
1437 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1438 struct file_name_list *dirtmp;
1441 if (include_prefix != 0)
1442 prefix = include_prefix;
1444 prefix = savestring (GCC_INCLUDE_DIR);
1445 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1446 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1447 prefix[strlen (prefix) - 7] = 0;
1450 dirtmp = new_include_prefix (NULL_PTR, prefix, argv[++i]);
1451 append_include_chain (dirtmp, dirtmp);
1453 /* Add directory to end of path for includes. */
1454 if (!strcmp (argv[i], "-idirafter")) {
1455 struct file_name_list *dirtmp;
1457 if (! (dirtmp = new_include_prefix (NULL_PTR, "", argv[++i])))
1460 if (after_include == 0)
1461 after_include = dirtmp;
1463 last_after_include->next = dirtmp;
1464 last_after_include = dirtmp; /* Tail follows the last one */
1469 if (out_fname != NULL)
1470 fatal ("Output filename specified twice");
1472 fatal ("Filename missing after -o option");
1473 out_fname = argv[++i];
1474 if (!strcmp (out_fname, "-"))
1479 if (!strcmp (argv[i], "-pedantic"))
1481 else if (!strcmp (argv[i], "-pedantic-errors")) {
1483 pedantic_errors = 1;
1484 } else if (!strcmp (argv[i], "-pcp")) {
1487 fatal ("Filename missing after -pcp option");
1488 pcp_fname = argv[++i];
1490 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1491 ? fopen (pcp_fname, "w")
1493 if (pcp_outfile == 0)
1494 pfatal_with_name (pcp_fname);
1500 if (!strcmp (argv[i], "-traditional")) {
1502 cplusplus_comments = 0;
1503 } else if (!strcmp (argv[i], "-trigraphs")) {
1509 if (! strcmp (argv[i], "-lang-c"))
1510 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1511 if (! strcmp (argv[i], "-lang-c89"))
1512 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1513 if (! strcmp (argv[i], "-lang-c++"))
1514 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1515 if (! strcmp (argv[i], "-lang-objc"))
1516 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1517 if (! strcmp (argv[i], "-lang-objc++"))
1518 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1519 if (! strcmp (argv[i], "-lang-asm"))
1521 if (! strcmp (argv[i], "-lint"))
1526 cplusplus = 1, cplusplus_comments = 1;
1530 inhibit_warnings = 1;
1534 if (!strcmp (argv[i], "-Wtrigraphs"))
1536 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1538 else if (!strcmp (argv[i], "-Wcomment"))
1540 else if (!strcmp (argv[i], "-Wno-comment"))
1542 else if (!strcmp (argv[i], "-Wcomments"))
1544 else if (!strcmp (argv[i], "-Wno-comments"))
1546 else if (!strcmp (argv[i], "-Wtraditional"))
1548 else if (!strcmp (argv[i], "-Wno-traditional"))
1550 else if (!strcmp (argv[i], "-Wimport"))
1552 else if (!strcmp (argv[i], "-Wno-import"))
1554 else if (!strcmp (argv[i], "-Werror"))
1555 warnings_are_errors = 1;
1556 else if (!strcmp (argv[i], "-Wno-error"))
1557 warnings_are_errors = 0;
1558 else if (!strcmp (argv[i], "-Wall"))
1566 /* The style of the choices here is a bit mixed.
1567 The chosen scheme is a hybrid of keeping all options in one string
1568 and specifying each option in a separate argument:
1569 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1570 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1571 -M[M][G][D file]. This is awkward to handle in specs, and is not
1573 /* ??? -MG must be specified in addition to one of -M or -MM.
1574 This can be relaxed in the future without breaking anything.
1575 The converse isn't true. */
1577 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1578 if (!strcmp (argv[i], "-MG"))
1580 print_deps_missing_files = 1;
1583 if (!strcmp (argv[i], "-M"))
1585 else if (!strcmp (argv[i], "-MM"))
1587 else if (!strcmp (argv[i], "-MD"))
1589 else if (!strcmp (argv[i], "-MMD"))
1591 /* For -MD and -MMD options, write deps on file named by next arg. */
1592 if (!strcmp (argv[i], "-MD")
1593 || !strcmp (argv[i], "-MMD")) {
1595 fatal ("Filename missing after %s option", argv[i]);
1597 deps_file = argv[i];
1600 /* For -M and -MM, write deps on standard output
1601 and suppress the usual output. */
1602 deps_stream = stdout;
1609 char *p = argv[i] + 2;
1611 while ((c = *p++)) {
1612 /* Arg to -d specifies what parts of macros to dump */
1615 dump_macros = dump_only;
1619 dump_macros = dump_names;
1622 dump_macros = dump_definitions;
1630 if (argv[i][2] == '3')
1635 fprintf (stderr, "GNU CPP version %s", version_string);
1636 #ifdef TARGET_VERSION
1639 fprintf (stderr, "\n");
1644 print_include_names = 1;
1648 if (argv[i][2] != 0)
1649 pend_defs[i] = argv[i] + 2;
1650 else if (i + 1 == argc)
1651 fatal ("Macro name missing after -D option");
1653 i++, pend_defs[i] = argv[i];
1660 if (argv[i][2] != 0)
1662 else if (i + 1 == argc)
1663 fatal ("Assertion missing after -A option");
1667 if (!strcmp (p, "-")) {
1668 /* -A- eliminates all predefined macros and assertions.
1669 Let's include also any that were specified earlier
1670 on the command line. That way we can get rid of any
1671 that were passed automatically in from GCC. */
1673 inhibit_predefs = 1;
1674 for (j = 0; j < i; j++)
1675 pend_defs[j] = pend_assertions[j] = 0;
1677 pend_assertions[i] = p;
1678 pend_assertion_options[i] = "-A";
1683 case 'U': /* JF #undef something */
1684 if (argv[i][2] != 0)
1685 pend_undefs[i] = argv[i] + 2;
1686 else if (i + 1 == argc)
1687 fatal ("Macro name missing after -U option");
1689 pend_undefs[i] = argv[i+1], i++;
1693 put_out_comments = 1;
1696 case 'E': /* -E comes from cc -E; ignore it. */
1700 no_line_directives = 1;
1703 case '$': /* Don't include $ in identifiers. */
1704 is_idchar['$'] = is_idstart['$'] = 0;
1707 case 'I': /* Add directory to path for includes. */
1709 struct file_name_list *dirtmp;
1711 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1713 /* Don't use any preceding -I directories for #include <...>. */
1714 first_bracket_include = 0;
1717 dirtmp = new_include_prefix (last_include, "",
1718 argv[i][2] ? argv[i] + 2 : argv[++i]);
1719 append_include_chain (dirtmp, dirtmp);
1725 if (!strcmp (argv[i], "-nostdinc"))
1726 /* -nostdinc causes no default include directories.
1727 You must specify all include-file directories with -I. */
1728 no_standard_includes = 1;
1729 else if (!strcmp (argv[i], "-nostdinc++"))
1730 /* -nostdinc++ causes no default C++-specific include directories. */
1731 no_standard_cplusplus_includes = 1;
1732 else if (!strcmp (argv[i], "-noprecomp"))
1737 /* Sun compiler passes undocumented switch "-undef".
1738 Let's assume it means to inhibit the predefined symbols. */
1739 inhibit_predefs = 1;
1742 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1743 if (in_fname == NULL) {
1746 } else if (out_fname == NULL) {
1749 } /* else fall through into error */
1752 fatal ("Invalid option `%s'", argv[i]);
1757 /* Add dirs from CPATH after dirs from -I. */
1758 /* There seems to be confusion about what CPATH should do,
1759 so for the moment it is not documented. */
1760 /* Some people say that CPATH should replace the standard include dirs,
1761 but that seems pointless: it comes before them, so it overrides them
1763 cp = getenv ("CPATH");
1764 if (cp && ! no_standard_includes)
1767 /* Initialize output buffer */
1769 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1770 outbuf.bufp = outbuf.buf;
1771 outbuf.length = OUTBUF_SIZE;
1773 /* Do partial setup of input buffer for the sake of generating
1774 early #line directives (when -g is in effect). */
1776 fp = &instack[++indepth];
1777 if (in_fname == NULL)
1779 fp->nominal_fname = fp->fname = in_fname;
1782 /* In C++, wchar_t is a distinct basic type, and we can expect
1783 __wchar_t to be defined by cc1plus. */
1785 wchar_type = "__wchar_t";
1787 /* Install __LINE__, etc. Must follow initialize_char_syntax
1788 and option processing. */
1789 initialize_builtins (fp, &outbuf);
1791 /* Do standard #defines and assertions
1792 that identify system and machine type. */
1794 if (!inhibit_predefs) {
1795 char *p = (char *) alloca (strlen (predefs) + 1);
1796 strcpy (p, predefs);
1799 while (*p == ' ' || *p == '\t')
1801 /* Handle -D options. */
1802 if (p[0] == '-' && p[1] == 'D') {
1804 while (*p && *p != ' ' && *p != '\t')
1809 output_line_directive (fp, &outbuf, 0, same_file);
1810 make_definition (q, &outbuf);
1811 while (*p == ' ' || *p == '\t')
1813 } else if (p[0] == '-' && p[1] == 'A') {
1814 /* Handle -A options (assertions). */
1823 past_name = assertion;
1824 /* Locate end of name. */
1825 while (*past_name && *past_name != ' '
1826 && *past_name != '\t' && *past_name != '(')
1828 /* Locate `(' at start of value. */
1830 while (*value && (*value == ' ' || *value == '\t'))
1832 if (*value++ != '(')
1834 while (*value && (*value == ' ' || *value == '\t'))
1837 /* Locate end of value. */
1838 while (*past_value && *past_value != ' '
1839 && *past_value != '\t' && *past_value != ')')
1841 termination = past_value;
1842 while (*termination && (*termination == ' ' || *termination == '\t'))
1844 if (*termination++ != ')')
1846 if (*termination && *termination != ' ' && *termination != '\t')
1848 /* Temporarily null-terminate the value. */
1849 save_char = *termination;
1850 *termination = '\0';
1851 /* Install the assertion. */
1852 make_assertion ("-A", assertion);
1853 *termination = (char) save_char;
1855 while (*p == ' ' || *p == '\t')
1863 /* Now handle the command line options. */
1865 /* Do -U's, -D's and -A's in the order they were seen. */
1866 for (i = 1; i < argc; i++) {
1867 if (pend_undefs[i]) {
1869 output_line_directive (fp, &outbuf, 0, same_file);
1870 make_undef (pend_undefs[i], &outbuf);
1874 output_line_directive (fp, &outbuf, 0, same_file);
1875 make_definition (pend_defs[i], &outbuf);
1877 if (pend_assertions[i])
1878 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1881 done_initializing = 1;
1883 { /* Read the appropriate environment variable and if it exists
1884 replace include_defaults with the listed path. */
1886 switch ((objc << 1) + cplusplus)
1889 epath = getenv ("C_INCLUDE_PATH");
1892 epath = getenv ("CPLUS_INCLUDE_PATH");
1895 epath = getenv ("OBJC_INCLUDE_PATH");
1898 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1901 /* If the environment var for this language is set,
1902 add to the default list of include directories. */
1905 char *startp, *endp;
1907 for (num_dirs = 1, startp = epath; *startp; startp++)
1908 if (*startp == PATH_SEPARATOR)
1911 = (struct default_include *) xmalloc ((num_dirs
1912 * sizeof (struct default_include))
1913 + sizeof (include_defaults_array));
1914 startp = endp = epath;
1918 if (c == PATH_SEPARATOR || !c) {
1920 include_defaults[num_dirs].fname
1921 = startp == endp ? "." : savestring (startp);
1923 include_defaults[num_dirs].cplusplus = cplusplus;
1924 include_defaults[num_dirs].cxx_aware = 1;
1931 /* Put the usual defaults back in at the end. */
1932 bcopy ((char *) include_defaults_array,
1933 (char *) &include_defaults[num_dirs],
1934 sizeof (include_defaults_array));
1938 append_include_chain (before_system, last_before_system);
1939 first_system_include = before_system;
1941 /* Unless -fnostdinc,
1942 tack on the standard include file dirs to the specified list */
1943 if (!no_standard_includes) {
1944 struct default_include *p = include_defaults;
1945 char *specd_prefix = include_prefix;
1946 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1947 int default_len = 0;
1948 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1949 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1950 default_len = strlen (default_prefix) - 7;
1951 default_prefix[default_len] = 0;
1953 /* Search "translated" versions of GNU directories.
1954 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1955 if (specd_prefix != 0 && default_len != 0)
1956 for (p = include_defaults; p->fname; p++) {
1957 /* Some standard dirs are only for C++. */
1958 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1959 /* Does this dir start with the prefix? */
1960 if (!strncmp (p->fname, default_prefix, default_len)) {
1961 /* Yes; change prefix and add to search list. */
1962 struct file_name_list *new
1963 = new_include_prefix (NULL_PTR, specd_prefix,
1964 p->fname + default_len);
1966 new->c_system_include_path = !p->cxx_aware;
1967 append_include_chain (new, new);
1968 if (first_system_include == 0)
1969 first_system_include = new;
1974 /* Search ordinary names for GNU include directories. */
1975 for (p = include_defaults; p->fname; p++) {
1976 /* Some standard dirs are only for C++. */
1977 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1978 struct file_name_list *new
1979 = new_include_prefix (NULL_PTR, "", p->fname);
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;
1990 /* Tack the after_include chain at the end of the include chain. */
1991 append_include_chain (after_include, last_after_include);
1992 if (first_system_include == 0)
1993 first_system_include = after_include;
1995 /* With -v, print the list of dirs to search. */
1997 struct file_name_list *p;
1998 fprintf (stderr, "#include \"...\" search starts here:\n");
1999 for (p = include; p; p = p->next) {
2000 if (p == first_bracket_include)
2001 fprintf (stderr, "#include <...> search starts here:\n");
2003 fprintf (stderr, " .\n");
2004 else if (!strcmp (p->fname, "/") || !strcmp (p->fname, "//"))
2005 fprintf (stderr, " %s\n", p->fname);
2007 /* Omit trailing '/'. */
2008 fprintf (stderr, " %.*s\n", (int) strlen (p->fname) - 1, p->fname);
2010 fprintf (stderr, "End of search list.\n");
2013 /* -MG doesn't select the form of output and must be specified with one of
2014 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
2015 inhibit compilation. */
2016 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
2017 fatal ("-MG must be specified with one of -M or -MM");
2019 /* Either of two environment variables can specify output of deps.
2020 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
2021 where OUTPUT_FILE is the file to write deps info to
2022 and DEPS_TARGET is the target to mention in the deps. */
2025 && (getenv ("SUNPRO_DEPENDENCIES") != 0
2026 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
2027 char *spec = getenv ("DEPENDENCIES_OUTPUT");
2032 spec = getenv ("SUNPRO_DEPENDENCIES");
2039 /* Find the space before the DEPS_TARGET, if there is one. */
2040 /* This should use index. (mrs) */
2041 while (*s != 0 && *s != ' ') s++;
2043 deps_target = s + 1;
2044 output_file = xmalloc (s - spec + 1);
2045 bcopy (spec, output_file, s - spec);
2046 output_file[s - spec] = 0;
2053 deps_file = output_file;
2057 /* For -M, print the expected object file name
2058 as the target of this Make-rule. */
2060 deps_allocated_size = 200;
2061 deps_buffer = xmalloc (deps_allocated_size);
2067 deps_output (deps_target, ':');
2068 } else if (*in_fname == 0) {
2069 deps_output ("-", ':');
2074 q = base_name (in_fname);
2076 /* Copy remainder to mungable area. */
2077 p = (char *) alloca (strlen(q) + 8);
2080 /* Output P, but remove known suffixes. */
2084 && p[len - 2] == '.'
2085 && index("cCsSm", p[len - 1]))
2088 && p[len - 3] == '.'
2089 && p[len - 2] == 'c'
2090 && p[len - 1] == 'c')
2093 && p[len - 4] == '.'
2094 && p[len - 3] == 'c'
2095 && p[len - 2] == 'x'
2096 && p[len - 1] == 'x')
2099 && p[len - 4] == '.'
2100 && p[len - 3] == 'c'
2101 && p[len - 2] == 'p'
2102 && p[len - 1] == 'p')
2105 /* Supply our own suffix. */
2112 deps_output (p, ':');
2113 deps_output (in_fname, ' ');
2117 /* Scan the -imacros files before the main input.
2118 Much like #including them, but with no_output set
2119 so that only their macro definitions matter. */
2121 no_output++; no_record_file++;
2122 for (i = 1; i < argc; i++)
2123 if (pend_files[i]) {
2124 struct include_file *inc;
2125 int fd = open_include_file (pend_files[i], NULL_PTR, NULL_PTR, &inc);
2127 perror_with_name (pend_files[i]);
2128 return FATAL_EXIT_CODE;
2130 finclude (fd, inc, &outbuf, 0, NULL_PTR);
2132 no_output--; no_record_file--;
2134 /* Copy the entire contents of the main input file into
2135 the stacked input buffer previously allocated for it. */
2137 /* JF check for stdin */
2138 if (in_fname == NULL || *in_fname == 0) {
2141 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
2144 if (fstat (f, &st) != 0)
2145 pfatal_with_name (in_fname);
2146 fp->nominal_fname = fp->fname = in_fname;
2148 fp->system_header_p = 0;
2149 /* JF all this is mine about reading pipes and ttys */
2150 if (! S_ISREG (st.st_mode)) {
2151 /* Read input from a file that is not a normal disk file.
2152 We cannot preallocate a buffer with the correct size,
2153 so we must read in the file a piece at the time and make it bigger. */
2158 if (S_ISDIR (st.st_mode))
2159 fatal ("Input file `%s' is a directory", in_fname);
2163 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2165 cnt = safe_read (f, (char *) fp->buf + size, bsize - size);
2166 if (cnt < 0) goto perror; /* error! */
2168 if (size != bsize) break; /* End of file */
2170 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2174 /* Read a file whose size we can determine in advance.
2175 For the sake of VMS, st.st_size is just an upper bound. */
2176 fp->buf = (U_CHAR *) xmalloc (st.st_size + 2);
2177 fp->length = safe_read (f, (char *) fp->buf, st.st_size);
2178 if (fp->length < 0) goto perror;
2181 fp->if_stack = if_stack;
2183 /* Make sure data ends with a newline. And put a null after it. */
2185 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2186 /* Backslash-newline at end is not good enough. */
2187 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2188 fp->buf[fp->length++] = '\n';
2189 missing_newline = 1;
2191 fp->buf[fp->length] = '\0';
2193 /* Unless inhibited, convert trigraphs in the input. */
2198 /* Now that we know the input file is valid, open the output. */
2200 if (!out_fname || !strcmp (out_fname, ""))
2201 out_fname = "stdout";
2202 else if (! freopen (out_fname, "w", stdout))
2203 pfatal_with_name (out_fname);
2205 output_line_directive (fp, &outbuf, 0, same_file);
2207 /* Scan the -include files before the main input. */
2210 for (i = 1; i < argc; i++)
2211 if (pend_includes[i]) {
2212 struct include_file *inc;
2213 int fd = open_include_file (pend_includes[i], NULL_PTR, NULL_PTR, &inc);
2215 perror_with_name (pend_includes[i]);
2216 return FATAL_EXIT_CODE;
2218 finclude (fd, inc, &outbuf, 0, NULL_PTR);
2222 /* Scan the input, processing macros and directives. */
2224 rescan (&outbuf, 0);
2226 if (missing_newline)
2229 if (pedantic && missing_newline)
2230 pedwarn ("file does not end in newline");
2232 /* Now we have processed the entire input
2233 Write whichever kind of output has been requested. */
2235 if (dump_macros == dump_only)
2237 else if (! inhibit_output) {
2242 /* Don't actually write the deps file if compilation has failed. */
2244 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2245 pfatal_with_name (deps_file);
2246 fputs (deps_buffer, deps_stream);
2247 putc ('\n', deps_stream);
2249 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2250 fatal ("I/O error on output");
2255 if (pcp_outfile && pcp_outfile != stdout
2256 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2257 fatal ("I/O error on `-pcp' output");
2259 if (ferror (stdout) || fclose (stdout) != 0)
2260 fatal ("I/O error on output");
2263 exit (FATAL_EXIT_CODE);
2264 exit (SUCCESS_EXIT_CODE);
2267 pfatal_with_name (in_fname);
2271 /* Given a colon-separated list of file names PATH,
2272 add all the names to the search path for include files. */
2286 struct file_name_list *dirtmp;
2288 /* Find the end of this name. */
2289 while ((c = *q++) != PATH_SEPARATOR && c)
2293 dirtmp = new_include_prefix (last_include, "", p == q ? "." : p);
2295 append_include_chain (dirtmp, dirtmp);
2297 /* Advance past this name. */
2304 /* Return the address of the first character in S that equals C.
2305 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2306 Return 0 if there is no such character. Assume that C itself is not '\0'.
2307 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2308 but unfortunately memchr isn't autoconfigured yet. */
2316 char *p = (char *) s;
2318 char *q = index (p, c);
2320 return (U_CHAR *) q;
2322 size_t l = strlen (p);
2332 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2333 before main CCCP processing. Name `pcp' is also in honor of the
2334 drugs the trigraph designers must have been on.
2336 Using an extra pass through the buffer takes a little extra time,
2337 but is infinitely less hairy than trying to handle trigraphs inside
2338 strings, etc. everywhere, and also makes sure that trigraphs are
2339 only translated in the top level of processing. */
2345 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2348 fptr = bptr = sptr = buf->buf;
2349 lptr = fptr + buf->length;
2350 while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) {
2387 len = sptr - fptr - 2;
2389 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2390 C, this will be memmove (). */
2391 if (bptr != fptr && len > 0)
2392 bcopy ((char *) fptr, (char *) bptr, len);
2398 len = buf->length - (fptr - buf->buf);
2399 if (bptr != fptr && len > 0)
2400 bcopy ((char *) fptr, (char *) bptr, len);
2401 buf->length -= fptr - bptr;
2402 buf->buf[buf->length] = '\0';
2403 if (warn_trigraphs && fptr != bptr)
2404 warning_with_line (0, "%lu trigraph(s) encountered",
2405 (unsigned long) (fptr - bptr) / 2);
2408 /* Move all backslash-newline pairs out of embarrassing places.
2409 Exchange all such pairs following BP
2410 with any potentially-embarrassing characters that follow them.
2411 Potentially-embarrassing characters are / and *
2412 (because a backslash-newline inside a comment delimiter
2413 would cause it not to be recognized). */
2419 register U_CHAR *p = bp;
2421 /* First count the backslash-newline pairs here. */
2423 while (p[0] == '\\' && p[1] == '\n')
2426 /* What follows the backslash-newlines is not embarrassing. */
2428 if (*p != '/' && *p != '*')
2431 /* Copy all potentially embarrassing characters
2432 that follow the backslash-newline pairs
2433 down to where the pairs originally started. */
2435 while (*p == '*' || *p == '/')
2438 /* Now write the same number of pairs after the embarrassing chars. */
2445 /* Like newline_fix but for use within a directive-name.
2446 Move any backslash-newlines up past any following symbol constituents. */
2449 name_newline_fix (bp)
2452 register U_CHAR *p = bp;
2454 /* First count the backslash-newline pairs here. */
2455 while (p[0] == '\\' && p[1] == '\n')
2458 /* What follows the backslash-newlines is not embarrassing. */
2463 /* Copy all potentially embarrassing characters
2464 that follow the backslash-newline pairs
2465 down to where the pairs originally started. */
2467 while (is_idchar[*p])
2470 /* Now write the same number of pairs after the embarrassing chars. */
2477 /* Look for lint commands in comments.
2479 When we come in here, ibp points into a comment. Limit is as one expects.
2480 scan within the comment -- it should start, after lwsp, with a lint command.
2481 If so that command is returned as a (constant) string.
2483 Upon return, any arg will be pointed to with argstart and will be
2484 arglen long. Note that we don't parse that arg since it will just
2485 be printed out again. */
2488 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2489 register U_CHAR *ibp;
2490 register U_CHAR *limit;
2491 U_CHAR **argstart; /* point to command arg */
2492 int *arglen, *cmdlen; /* how long they are */
2494 HOST_WIDE_INT linsize;
2495 register U_CHAR *numptr; /* temp for arg parsing */
2499 SKIP_WHITE_SPACE (ibp);
2501 if (ibp >= limit) return NULL;
2503 linsize = limit - ibp;
2505 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2506 if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) {
2508 return "NOTREACHED";
2510 if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) {
2514 if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) {
2516 return "LINTLIBRARY";
2518 if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) {
2520 ibp += 7; linsize -= 7;
2521 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2523 /* OK, read a number */
2524 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2526 *arglen = numptr - *argstart;
2533 * The main loop of the program.
2535 * Read characters from the input stack, transferring them to the
2538 * Macros are expanded and push levels on the input stack.
2539 * At the end of such a level it is popped off and we keep reading.
2540 * At the end of any other kind of level, we return.
2541 * #-directives are handled, except within macros.
2543 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2544 * and insert them when appropriate. This is set while scanning macro
2545 * arguments before substitution. It is zero when scanning for final output.
2546 * There are three types of Newline markers:
2547 * * Newline - follows a macro name that was not expanded
2548 * because it appeared inside an expansion of the same macro.
2549 * This marker prevents future expansion of that identifier.
2550 * When the input is rescanned into the final output, these are deleted.
2551 * These are also deleted by ## concatenation.
2552 * * Newline Space (or Newline and any other whitespace character)
2553 * stands for a place that tokens must be separated or whitespace
2554 * is otherwise desirable, but where the ANSI standard specifies there
2555 * is no whitespace. This marker turns into a Space (or whichever other
2556 * whitespace char appears in the marker) in the final output,
2557 * but it turns into nothing in an argument that is stringified with #.
2558 * Such stringified arguments are the only place where the ANSI standard
2559 * specifies with precision that whitespace may not appear.
2561 * During this function, IP->bufp is kept cached in IBP for speed of access.
2562 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2563 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2564 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2565 * explicitly, and before RECACHE, since RECACHE uses OBP.
2569 rescan (op, output_marks)
2573 /* Character being scanned in main loop. */
2576 /* Length of pending accumulated identifier. */
2577 register int ident_length = 0;
2579 /* Hash code of pending accumulated identifier. */
2580 register int hash = 0;
2582 /* Current input level (&instack[indepth]). */
2585 /* Pointer for scanning input. */
2586 register U_CHAR *ibp;
2588 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2589 register U_CHAR *limit;
2591 /* Pointer for storing output. */
2592 register U_CHAR *obp;
2594 /* REDO_CHAR is nonzero if we are processing an identifier
2595 after backing up over the terminating character.
2596 Sometimes we process an identifier without backing up over
2597 the terminating character, if the terminating character
2598 is not special. Backing up is done so that the terminating character
2599 will be dispatched on again once the identifier is dealt with. */
2602 /* 1 if within an identifier inside of which a concatenation
2603 marker (Newline -) has been seen. */
2604 int concatenated = 0;
2606 /* While scanning a comment or a string constant,
2607 this records the line it started on, for error messages. */
2610 /* Record position of last `real' newline. */
2611 U_CHAR *beg_of_line;
2613 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2616 do { ip->macro->type = T_MACRO; \
2617 if (ip->free_ptr) free (ip->free_ptr); \
2618 --indepth; } while (0)
2620 /* Reload `rescan's local variables that describe the current
2621 level of the input stack. */
2624 do { ip = &instack[indepth]; \
2626 limit = ip->buf + ip->length; \
2628 check_expand (op, limit - ibp); \
2630 obp = op->bufp; } while (0)
2632 if (no_output && instack[indepth].fname != 0)
2633 skip_if_group (&instack[indepth], 1, NULL);
2640 /* Our caller must always put a null after the end of
2641 the input at each input stack level. */
2651 if (*ibp == '\n' && !ip->macro) {
2652 /* At the top level, always merge lines ending with backslash-newline,
2653 even in middle of identifier. But do not merge lines in a macro,
2654 since backslash might be followed by a newline-space marker. */
2657 --obp; /* remove backslash from obuf */
2660 /* If ANSI, backslash is just another character outside a string. */
2663 /* Otherwise, backslash suppresses specialness of following char,
2664 so copy it here to prevent the switch from seeing it.
2665 But first get any pending identifier processed. */
2666 if (ident_length > 0)
2673 if (ident_length || ip->macro || traditional)
2675 while (*ibp == '\\' && ibp[1] == '\n') {
2681 /* Treat this %: digraph as if it were #. */
2685 if (assertions_flag) {
2688 /* Copy #foo (bar lose) without macro expansion. */
2689 obp[-1] = '#'; /* In case it was '%'. */
2690 SKIP_WHITE_SPACE (ibp);
2691 while (is_idchar[*ibp])
2693 SKIP_WHITE_SPACE (ibp);
2696 skip_paren_group (ip);
2697 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2698 obp += ip->bufp - ibp;
2704 /* If this is expanding a macro definition, don't recognize
2705 preprocessing directives. */
2708 /* If this is expand_into_temp_buffer,
2709 don't recognize them either. Warn about them
2710 only after an actual newline at this level,
2711 not at the beginning of the input level. */
2713 if (ip->buf != beg_of_line)
2714 warning ("preprocessing directive not recognized within macro arg");
2721 /* # keyword: a # must be first nonblank char on the line */
2722 if (beg_of_line == 0)
2727 /* Scan from start of line, skipping whitespace, comments
2728 and backslash-newlines, and see if we reach this #.
2729 If not, this # is not special. */
2731 /* If -traditional, require # to be at beginning of line. */
2734 if (is_hor_space[*bp])
2736 else if (*bp == '\\' && bp[1] == '\n')
2738 else if (*bp == '/' && bp[1] == '*') {
2740 while (!(*bp == '*' && bp[1] == '/'))
2744 /* There is no point in trying to deal with C++ // comments here,
2745 because if there is one, then this # must be part of the
2746 comment and we would never reach here. */
2752 while (bp[1] == '\\' && bp[2] == '\n')
2756 /* %: appears at start of line; skip past the ':' too. */
2765 /* This # can start a directive. */
2767 --obp; /* Don't copy the '#' */
2771 if (! handle_directive (ip, op)) {
2775 /* Not a known directive: treat it as ordinary text.
2776 IP, OP, IBP, etc. have not been changed. */
2777 if (no_output && instack[indepth].fname) {
2778 /* If not generating expanded output,
2779 what we do with ordinary text is skip it.
2780 Discard everything until next # directive. */
2781 skip_if_group (&instack[indepth], 1, 0);
2786 *obp++ = '#'; /* Copy # (even if it was originally %:). */
2787 /* Don't expand an identifier that could be a macro directive.
2788 (Section 3.8.3 of the ANSI C standard) */
2789 SKIP_WHITE_SPACE (ibp);
2790 if (is_idstart[*ibp])
2793 while (is_idchar[*ibp])
2801 /* A # directive has been successfully processed. */
2802 /* If not generating expanded output, ignore everything until
2803 next # directive. */
2804 if (no_output && instack[indepth].fname)
2805 skip_if_group (&instack[indepth], 1, 0);
2811 case '\"': /* skip quoted string */
2813 /* A single quoted string is treated like a double -- some
2814 programs (e.g., troff) are perverse this way */
2819 start_line = ip->lineno;
2821 /* Skip ahead to a matching quote. */
2825 if (ip->macro != 0) {
2826 /* try harder: this string crosses a macro expansion boundary.
2827 This can happen naturally if -traditional.
2828 Otherwise, only -D can make a macro with an unmatched quote. */
2834 error_with_line (line_for_error (start_line),
2835 "unterminated string or character constant");
2836 error_with_line (multiline_string_line,
2837 "possible real start of unterminated constant");
2838 multiline_string_line = 0;
2847 /* Traditionally, end of line ends a string constant with no error.
2848 So exit the loop and record the new line. */
2854 error_with_line (line_for_error (start_line),
2855 "unterminated character constant");
2858 if (multiline_string_line == 0) {
2860 pedwarn_with_line (line_for_error (start_line),
2861 "string constant runs past end of line");
2862 multiline_string_line = ip->lineno - 1;
2870 /* Backslash newline is replaced by nothing at all,
2871 but keep the line counts correct. */
2876 /* ANSI stupidly requires that in \\ the second \
2877 is *not* prevented from combining with a newline. */
2878 while (*ibp == '\\' && ibp[1] == '\n') {
2897 if (*ibp == '\\' && ibp[1] == '\n')
2901 && !(cplusplus_comments && *ibp == '/'))
2909 /* C++ style comment... */
2910 start_line = ip->lineno;
2912 /* Comments are equivalent to spaces. */
2913 if (! put_out_comments)
2917 U_CHAR *before_bp = ibp;
2919 while (++ibp < limit) {
2921 if (ibp[-1] != '\\') {
2922 if (put_out_comments) {
2923 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2924 obp += ibp - before_bp;
2929 warning ("multiline `//' comment");
2931 /* Copy the newline into the output buffer, in order to
2932 avoid the pain of a #line every time a multiline comment
2934 if (!put_out_comments)
2943 /* Ordinary C comment. Skip it, optionally copying it to output. */
2945 start_line = ip->lineno;
2947 ++ibp; /* Skip the star. */
2949 /* If this cpp is for lint, we peek inside the comments: */
2953 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2955 if (lintcmd != NULL) {
2957 check_expand (op, cmdlen + arglen + 14);
2959 /* I believe it is always safe to emit this newline: */
2961 bcopy ("#pragma lint ", (char *) obp, 13);
2963 bcopy (lintcmd, (char *) obp, cmdlen);
2968 bcopy (argbp, (char *) obp, arglen);
2972 /* OK, now bring us back to the state we were in before we entered
2973 this branch. We need #line because the #pragma's newline always
2974 messes up the line count. */
2976 output_line_directive (ip, op, 0, same_file);
2977 check_expand (op, limit - ibp + 2);
2983 /* Comments are equivalent to spaces.
2984 Note that we already output the slash; we might not want it.
2985 For -traditional, a comment is equivalent to nothing. */
2986 if (! put_out_comments) {
2996 U_CHAR *before_bp = ibp;
3001 if (ibp[-2] == '/' && warn_comments)
3002 warning ("`/*' within comment");
3003 if (*ibp == '\\' && ibp[1] == '\n')
3011 /* Copy the newline into the output buffer, in order to
3012 avoid the pain of a #line every time a multiline comment
3014 if (!put_out_comments)
3021 error_with_line (line_for_error (start_line),
3022 "unterminated comment");
3031 if (put_out_comments) {
3032 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
3033 obp += ibp - before_bp;
3039 if (! is_idchar['$'])
3042 pedwarn ("`$' in identifier");
3045 case '0': case '1': case '2': case '3': case '4':
3046 case '5': case '6': case '7': case '8': case '9':
3047 /* If digit is not part of identifier, it starts a number,
3048 which means that following letters are not an identifier.
3049 "0x5" does not refer to an identifier "x5".
3050 So copy all alphanumerics that follow without accumulating
3051 as an identifier. Periods also, for sake of "3.e7". */
3053 if (ident_length == 0) {
3055 while (ibp[0] == '\\' && ibp[1] == '\n') {
3060 if (!is_idchar[c] && c != '.') {
3065 /* A sign can be part of a preprocessing number
3066 if it follows an e. */
3067 if (c == 'e' || c == 'E') {
3068 while (ibp[0] == '\\' && ibp[1] == '\n') {
3072 if (*ibp == '+' || *ibp == '-') {
3074 /* But traditional C does not let the token go past the sign. */
3085 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
3086 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
3087 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
3088 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3090 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
3091 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
3092 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
3093 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3097 /* Compute step of hash function, to avoid a proc call on every token */
3098 hash = HASHSTEP (hash, c);
3102 if (ip->fname == 0 && *ibp == '-') {
3103 /* Newline - inhibits expansion of preceding token.
3104 If expanding a macro arg, we keep the newline -.
3105 In final output, it is deleted.
3106 We recognize Newline - in macro bodies and macro args. */
3107 if (! concatenated) {
3112 if (!output_marks) {
3115 /* If expanding a macro arg, keep the newline -. */
3121 /* If reprocessing a macro expansion, newline is a special marker. */
3122 else if (ip->macro != 0) {
3123 /* Newline White is a "funny space" to separate tokens that are
3124 supposed to be separate but without space between.
3125 Here White means any whitespace character.
3126 Newline - marks a recursive macro use that is not
3127 supposed to be expandable. */
3129 if (is_space[*ibp]) {
3130 /* Newline Space does not prevent expansion of preceding token
3131 so expand the preceding token and then come back. */
3132 if (ident_length > 0)
3135 /* If generating final output, newline space makes a space. */
3136 if (!output_marks) {
3138 /* And Newline Newline makes a newline, so count it. */
3139 if (obp[-1] == '\n')
3142 /* If expanding a macro arg, keep the newline space.
3143 If the arg gets stringified, newline space makes nothing. */
3146 } else abort (); /* Newline followed by something random? */
3150 /* If there is a pending identifier, handle it and come back here. */
3151 if (ident_length > 0)
3156 /* Update the line counts and output a #line if necessary. */
3159 if (ip->lineno != op->lineno) {
3161 output_line_directive (ip, op, 1, same_file);
3162 check_expand (op, limit - ibp);
3167 /* Come here either after (1) a null character that is part of the input
3168 or (2) at the end of the input, because there is a null there. */
3171 /* Our input really contains a null character. */
3175 /* At end of a macro-expansion level, pop it and read next level. */
3176 if (ip->macro != 0) {
3179 /* If traditional, and we have an identifier that ends here,
3180 process it now, so we get the right error for recursion. */
3181 if (traditional && ident_length
3182 && ! is_idchar[*instack[indepth - 1].bufp]) {
3191 /* If we don't have a pending identifier,
3192 return at end of input. */
3193 if (ident_length == 0) {
3201 /* If we do have a pending identifier, just consider this null
3202 a special character and arrange to dispatch on it again.
3203 The second time, IDENT_LENGTH will be zero so we will return. */
3209 /* Handle the case of a character such as /, ', " or null
3210 seen following an identifier. Back over it so that
3211 after the identifier is processed the special char
3212 will be dispatched on again. */
3222 if (ident_length > 0) {
3223 register HASHNODE *hp;
3225 /* We have just seen an identifier end. If it's a macro, expand it.
3227 IDENT_LENGTH is the length of the identifier
3228 and HASH is its hash code.
3230 The identifier has already been copied to the output,
3231 so if it is a macro we must remove it.
3233 If REDO_CHAR is 0, the char that terminated the identifier
3234 has been skipped in the output and the input.
3235 OBP-IDENT_LENGTH-1 points to the identifier.
3236 If the identifier is a macro, we must back over the terminator.
3238 If REDO_CHAR is 1, the terminating char has already been
3239 backed over. OBP-IDENT_LENGTH points to the identifier. */
3241 if (!pcp_outfile || pcp_inside_if) {
3242 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3245 if (hp->length == ident_length) {
3246 int obufp_before_macroname;
3247 int op_lineno_before_macroname;
3248 register int i = ident_length;
3249 register U_CHAR *p = hp->name;
3250 register U_CHAR *q = obp - i;
3256 do { /* All this to avoid a strncmp () */
3261 /* We found a use of a macro name.
3262 see if the context shows it is a macro call. */
3264 /* Back up over terminating character if not already done. */
3270 /* Save this as a displacement from the beginning of the output
3271 buffer. We can not save this as a position in the output
3272 buffer, because it may get realloc'ed by RECACHE. */
3273 obufp_before_macroname = (obp - op->buf) - ident_length;
3274 op_lineno_before_macroname = op->lineno;
3276 if (hp->type == T_PCSTRING) {
3277 pcstring_used (hp); /* Mark the definition of this key
3278 as needed, ensuring that it
3280 break; /* Exit loop, since the key cannot have a
3281 definition any longer. */
3284 /* Record whether the macro is disabled. */
3285 disabled = hp->type == T_DISABLED;
3287 /* This looks like a macro ref, but if the macro was disabled,
3288 just copy its name and put in a marker if requested. */
3292 /* This error check caught useful cases such as
3293 #define foo(x,y) bar (x (y,0), y)
3296 error ("recursive use of macro `%s'", hp->name);
3300 check_expand (op, limit - ibp + 2);
3307 /* If macro wants an arglist, verify that a '(' follows.
3308 first skip all whitespace, copying it to the output
3309 after the macro name. Then, if there is no '(',
3310 decide this is not a macro call and leave things that way. */
3311 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3312 && hp->value.defn->nargs >= 0)
3314 U_CHAR *old_ibp = ibp;
3315 U_CHAR *old_obp = obp;
3316 int old_iln = ip->lineno;
3317 int old_oln = op->lineno;
3320 /* Scan forward over whitespace, copying it to the output. */
3321 if (ibp == limit && ip->macro != 0) {
3326 old_iln = ip->lineno;
3327 old_oln = op->lineno;
3329 /* A comment: copy it unchanged or discard it. */
3330 else if (*ibp == '/' && ibp[1] == '*') {
3331 if (put_out_comments) {
3334 } else if (! traditional) {
3338 while (ibp + 1 != limit
3339 && !(ibp[0] == '*' && ibp[1] == '/')) {
3340 /* We need not worry about newline-marks,
3341 since they are never found in comments. */
3343 /* Newline in a file. Count it. */
3347 if (put_out_comments)
3353 if (put_out_comments) {
3358 else if (is_space[*ibp]) {
3360 if (ibp[-1] == '\n') {
3361 if (ip->macro == 0) {
3362 /* Newline in a file. Count it. */
3365 } else if (!output_marks) {
3366 /* A newline mark, and we don't want marks
3367 in the output. If it is newline-hyphen,
3368 discard it entirely. Otherwise, it is
3369 newline-whitechar, so keep the whitechar. */
3379 /* A newline mark; copy both chars to the output. */
3387 /* It isn't a macro call.
3388 Put back the space that we just skipped. */
3391 ip->lineno = old_iln;
3392 op->lineno = old_oln;
3393 /* Exit the for loop. */
3398 /* This is now known to be a macro call.
3399 Discard the macro name from the output,
3400 along with any following whitespace just copied,
3401 but preserve newlines if not outputting marks since this
3402 is more likely to do the right thing with line numbers. */
3403 obp = op->buf + obufp_before_macroname;
3405 op->lineno = op_lineno_before_macroname;
3407 int newlines = op->lineno - op_lineno_before_macroname;
3408 while (0 < newlines--)
3412 /* Prevent accidental token-pasting with a character
3413 before the macro call. */
3414 if (!traditional && obp != op->buf) {
3416 case '!': case '%': case '&': case '*':
3417 case '+': case '-': case '/': case ':':
3418 case '<': case '=': case '>': case '^':
3420 /* If we are expanding a macro arg, make a newline marker
3421 to separate the tokens. If we are making real output,
3422 a plain space will do. */
3429 /* Expand the macro, reading arguments as needed,
3430 and push the expansion on the input stack. */
3433 macroexpand (hp, op);
3435 /* Reexamine input stack, since macroexpand has pushed
3436 a new level on it. */
3443 } /* End hash-table-search loop */
3445 ident_length = hash = 0; /* Stop collecting identifier */
3448 } /* End if (ident_length > 0) */
3450 } /* End per-char loop */
3452 /* Come here to return -- but first give an error message
3453 if there was an unterminated successful conditional. */
3455 if (if_stack != ip->if_stack)
3459 switch (if_stack->type)
3480 error_with_line (line_for_error (if_stack->lineno),
3481 "unterminated `#%s' conditional", str);
3483 if_stack = ip->if_stack;
3487 * Rescan a string into a temporary buffer and return the result
3488 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3490 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3491 * and insert such markers when appropriate. See `rescan' for details.
3492 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3493 * before substitution; it is 0 for other uses.
3496 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3497 U_CHAR *buf, *limit;
3498 int output_marks, assertions;
3500 register FILE_BUF *ip;
3502 int length = limit - buf;
3504 int odepth = indepth;
3505 int save_assertions_flag = assertions_flag;
3507 assertions_flag = assertions;
3512 /* Set up the input on the input stack. */
3514 buf1 = (U_CHAR *) alloca (length + 1);
3516 register U_CHAR *p1 = buf;
3517 register U_CHAR *p2 = buf1;
3524 /* Set up to receive the output. */
3526 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3527 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3532 CHECK_DEPTH ({return obuf;});
3536 ip = &instack[indepth];
3538 ip->nominal_fname = 0;
3540 ip->system_header_p = 0;
3543 ip->length = length;
3544 ip->buf = ip->bufp = buf1;
3545 ip->if_stack = if_stack;
3547 ip->lineno = obuf.lineno = 1;
3549 /* Scan the input, create the output. */
3550 rescan (&obuf, output_marks);
3552 /* Pop input stack to original state. */
3555 if (indepth != odepth)
3558 /* Record the output. */
3559 obuf.length = obuf.bufp - obuf.buf;
3561 assertions_flag = save_assertions_flag;
3566 * Process a # directive. Expects IP->bufp to point after the '#', as in
3567 * `#define foo bar'. Passes to the directive handler
3568 * (do_define, do_include, etc.): the addresses of the 1st and
3569 * last chars of the directive (starting immediately after the #
3570 * keyword), plus op and the keyword table pointer. If the directive
3571 * contains comments it is copied into a temporary buffer sans comments
3572 * and the temporary buffer is passed to the directive handler instead.
3573 * Likewise for backslash-newlines.
3575 * Returns nonzero if this was a known # directive.
3576 * Otherwise, returns zero, without advancing the input pointer.
3580 handle_directive (ip, op)
3583 register U_CHAR *bp, *cp;
3584 register struct directive *kt;
3585 register int ident_length;
3588 /* Nonzero means we must copy the entire directive
3589 to get rid of comments or backslash-newlines. */
3590 int copy_directive = 0;
3592 U_CHAR *ident, *after_ident;
3596 /* Record where the directive started. do_xifdef needs this. */
3597 directive_start = bp - 1;
3599 /* Skip whitespace and \-newline. */
3601 if (is_hor_space[*bp]) {
3602 if (*bp != ' ' && *bp != '\t' && pedantic)
3603 pedwarn ("%s in preprocessing directive", char_name[*bp]);
3605 } else if (*bp == '/' && (bp[1] == '*'
3606 || (cplusplus_comments && bp[1] == '/'))) {
3608 skip_to_end_of_comment (ip, &ip->lineno, 0);
3610 } else if (*bp == '\\' && bp[1] == '\n') {
3611 bp += 2; ip->lineno++;
3615 /* Now find end of directive name.
3616 If we encounter a backslash-newline, exchange it with any following
3617 symbol-constituents so that we end up with a contiguous name. */
3624 if (*cp == '\\' && cp[1] == '\n')
3625 name_newline_fix (cp);
3631 ident_length = cp - bp;
3635 /* A line of just `#' becomes blank. */
3637 if (ident_length == 0 && *after_ident == '\n') {
3638 ip->bufp = after_ident;
3642 if (ident_length == 0 || !is_idstart[*ident]) {
3644 while (is_idchar[*p]) {
3645 if (*p < '0' || *p > '9')
3649 /* Handle # followed by a line number. */
3650 if (p != ident && !is_idchar[*p]) {
3651 static struct directive line_directive_table[] = {
3652 { 4, do_line, "line", T_LINE},
3655 pedwarn ("`#' followed by integer");
3656 after_ident = ident;
3657 kt = line_directive_table;
3661 /* Avoid error for `###' and similar cases unless -pedantic. */
3663 while (*p == '#' || is_hor_space[*p]) p++;
3665 if (pedantic && !lang_asm)
3666 warning ("invalid preprocessing directive");
3672 error ("invalid preprocessing directive name");
3678 * Decode the keyword and call the appropriate expansion
3679 * routine, after moving the input pointer up to the next line.
3681 for (kt = directive_table; kt->length > 0; kt++) {
3682 if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) {
3683 register U_CHAR *buf;
3684 register U_CHAR *limit;
3687 int *already_output;
3689 /* Nonzero means do not delete comments within the directive.
3690 #define needs this when -traditional. */
3695 limit = ip->buf + ip->length;
3698 keep_comments = traditional && kt->traditional_comments;
3699 /* #import is defined only in Objective C, or when on the NeXT. */
3700 if (kt->type == T_IMPORT
3701 && !(objc || lookup ((U_CHAR *) "__NeXT__", -1, -1)))
3704 /* Find the end of this directive (first newline not backslashed
3705 and not in a string or comment).
3706 Set COPY_DIRECTIVE if the directive must be copied
3707 (it contains a backslash-newline or a comment). */
3709 buf = bp = after_ident;
3710 while (bp < limit) {
3711 register U_CHAR c = *bp++;
3719 } else if (traditional)
3726 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_directive, &unterminated);
3727 /* Don't bother calling the directive if we already got an error
3728 message due to unterminated string. Skip everything and pretend
3729 we called the directive. */
3732 /* Traditional preprocessing permits unterminated strings. */
3741 /* <...> is special for #include. */
3743 if (!kt->angle_brackets)
3745 while (bp < limit && *bp != '>' && *bp != '\n') {
3746 if (*bp == '\\' && bp[1] == '\n') {
3756 if (*bp == '\\' && bp[1] == '\n')
3759 || (cplusplus_comments && *bp == '/')) {
3760 U_CHAR *obp = bp - 1;
3762 skip_to_end_of_comment (ip, &ip->lineno, 0);
3764 /* No need to copy the directive because of a comment at the end;
3765 just don't include the comment in the directive. */
3766 if (!put_out_comments) {
3768 for (p = bp; *p == ' ' || *p == '\t'; p++)
3775 /* Don't remove the comments if -traditional. */
3776 if (! keep_comments)
3785 pedwarn ("%s in preprocessing directive", char_name[c]);
3789 --bp; /* Point to the newline */
3797 resume_p = ip->bufp;
3798 /* BP is the end of the directive.
3799 RESUME_P is the next interesting data after the directive.
3800 A comment may come between. */
3802 /* If a directive should be copied through, and -E was given,
3803 pass it through before removing comments. */
3804 if (!no_output && put_out_comments
3805 && (dump_macros != dump_definitions) < kt->pass_thru) {
3808 /* Output directive name. */
3809 check_expand (op, kt->length + 2);
3810 /* Make sure # is at the start of a line */
3811 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3816 bcopy (kt->name, op->bufp, kt->length);
3817 op->bufp += kt->length;
3819 /* Output arguments. */
3821 check_expand (op, len);
3822 bcopy (buf, (char *) op->bufp, len);
3824 /* Take account of any (escaped) newlines just output. */
3826 if (buf[len] == '\n')
3829 already_output = &junk;
3830 } /* Don't we need a newline or #line? */
3832 if (copy_directive) {
3833 register U_CHAR *xp = buf;
3834 /* Need to copy entire directive into temp buffer before dispatching */
3836 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for directive plus
3840 /* Copy to the new buffer, deleting comments
3841 and backslash-newlines (and whitespace surrounding the latter). */
3844 register U_CHAR c = *xp++;
3849 abort (); /* A bare newline should never part of the line. */
3852 /* <...> is special for #include. */
3854 if (!kt->angle_brackets)
3856 while (xp < bp && c != '>') {
3858 if (c == '\\' && xp < bp && *xp == '\n')
3869 if (cp != buf && is_hor_space[cp[-1]]) {
3870 while (cp - 1 != buf && is_hor_space[cp[-2]])
3872 SKIP_WHITE_SPACE (xp);
3873 } else if (is_hor_space[*xp]) {
3875 SKIP_WHITE_SPACE (xp);
3877 } else if (traditional && xp < bp) {
3885 register U_CHAR *bp1
3886 = skip_quoted_string (xp - 1, bp, ip->lineno,
3887 NULL_PTR, NULL_PTR, NULL_PTR);
3901 || (cplusplus_comments && *xp == '/')) {
3903 /* If we already copied the directive through,
3904 already_output != 0 prevents outputting comment now. */
3905 skip_to_end_of_comment (ip, already_output, 0);
3907 while (xp != ip->bufp)
3909 /* Delete or replace the slash. */
3910 else if (traditional)
3919 /* Null-terminate the copy. */
3925 ip->bufp = resume_p;
3927 /* Some directives should be written out for cc1 to process,
3928 just as if they were not defined. And sometimes we're copying
3929 definitions through. */
3931 if (!no_output && already_output == 0
3932 && (dump_macros < dump_names) < kt->pass_thru) {
3935 /* Output directive name. */
3936 check_expand (op, kt->length + 1);
3938 bcopy (kt->name, (char *) op->bufp, kt->length);
3939 op->bufp += kt->length;
3941 if ((dump_macros != dump_definitions) < kt->pass_thru) {
3942 /* Output arguments. */
3944 check_expand (op, len);
3945 bcopy (buf, (char *) op->bufp, len);
3947 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
3950 SKIP_WHITE_SPACE (xp);
3952 while (is_idchar[*xp]) xp++;
3954 check_expand (op, len + 1);
3956 bcopy (yp, op->bufp, len);
3959 } /* Don't we need a newline or #line? */
3961 /* Call the appropriate directive handler. buf now points to
3962 either the appropriate place in the input buffer, or to
3963 the temp buffer if it was necessary to make one. cp
3964 points to the first char after the contents of the (possibly
3965 copied) directive, in either case. */
3966 (*kt->func) (buf, cp, op, kt);
3967 check_expand (op, ip->length - (ip->bufp - ip->buf));
3973 /* It is deliberate that we don't warn about undefined directives.
3974 That is the responsibility of cc1. */
3981 static struct tm *timebuf;
3983 time_t t = time ((time_t *) 0);
3984 timebuf = localtime (&t);
3989 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3990 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
3994 * expand things like __FILE__. Place the expansion into the output
3995 * buffer *without* rescanning.
3999 special_symbol (hp, op)
4006 FILE_BUF *ip = NULL;
4009 int paren = 0; /* For special `defined' keyword */
4011 if (pcp_outfile && pcp_inside_if
4012 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
4013 error ("Predefined macro `%s' used inside `#if' during precompilation",
4016 for (i = indepth; i >= 0; i--)
4017 if (instack[i].fname != NULL) {
4022 error ("cccp error: not in any file?!");
4023 return; /* the show must go on */
4031 if (hp->type == T_FILE)
4032 string = ip->nominal_fname;
4034 string = instack[0].nominal_fname;
4038 buf = (char *) alloca (3 + 4 * strlen (string));
4039 quote_string (buf, string);
4047 case T_INCLUDE_LEVEL:
4049 for (i = indepth; i >= 0; i--)
4050 if (instack[i].fname != NULL)
4053 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
4054 sprintf (buf, "%d", true_indepth - 1);
4058 buf = (char *) alloca (3 + strlen (version_string));
4059 sprintf (buf, "\"%s\"", version_string);
4062 #ifndef NO_BUILTIN_SIZE_TYPE
4068 #ifndef NO_BUILTIN_PTRDIFF_TYPE
4069 case T_PTRDIFF_TYPE:
4078 case T_USER_LABEL_PREFIX_TYPE:
4079 buf = USER_LABEL_PREFIX;
4082 case T_REGISTER_PREFIX_TYPE:
4083 buf = REGISTER_PREFIX;
4086 case T_IMMEDIATE_PREFIX_TYPE:
4087 buf = IMMEDIATE_PREFIX;
4091 buf = hp->value.cpval;
4092 if (pcp_inside_if && pcp_outfile)
4093 /* Output a precondition for this macro use */
4094 fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
4098 buf = (char *) alloca (10);
4099 sprintf (buf, "%d", ip->lineno);
4104 buf = (char *) alloca (20);
4105 timebuf = timestamp ();
4106 if (hp->type == T_DATE)
4107 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
4108 timebuf->tm_mday, timebuf->tm_year + 1900);
4110 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
4114 case T_SPEC_DEFINED:
4115 buf = " 0 "; /* Assume symbol is not defined */
4116 ip = &instack[indepth];
4117 SKIP_WHITE_SPACE (ip->bufp);
4118 if (*ip->bufp == '(') {
4120 ip->bufp++; /* Skip over the paren */
4121 SKIP_WHITE_SPACE (ip->bufp);
4124 if (!is_idstart[*ip->bufp])
4126 if ((hp = lookup (ip->bufp, -1, -1))) {
4127 if (pcp_outfile && pcp_inside_if
4128 && (hp->type == T_CONST
4129 || (hp->type == T_MACRO && hp->value.defn->predefined)))
4130 /* Output a precondition for this macro use. */
4131 fprintf (pcp_outfile, "#define %s\n", hp->name);
4135 if (pcp_outfile && pcp_inside_if) {
4136 /* Output a precondition for this macro use */
4137 U_CHAR *cp = ip->bufp;
4138 fprintf (pcp_outfile, "#undef ");
4139 while (is_idchar[*cp]) /* Ick! */
4140 fputc (*cp++, pcp_outfile);
4141 putc ('\n', pcp_outfile);
4143 while (is_idchar[*ip->bufp])
4145 SKIP_WHITE_SPACE (ip->bufp);
4147 if (*ip->bufp != ')')
4155 error ("`defined' without an identifier");
4159 error ("cccp error: invalid special hash type"); /* time for gdb */
4163 check_expand (op, len);
4164 bcopy (buf, (char *) op->bufp, len);
4171 /* Routines to handle #directives */
4173 /* Handle #include and #import.
4174 This function expects to see "fname" or <fname> on the input. */
4177 do_include (buf, limit, op, keyword)
4178 U_CHAR *buf, *limit;
4180 struct directive *keyword;
4182 U_CHAR *importing = keyword->type == T_IMPORT ? (U_CHAR *) "" : (U_CHAR *) 0;
4183 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4184 static int import_warning = 0;
4185 char *fname; /* Dynamically allocated fname buffer */
4188 char *fbeg, *fend; /* Beginning and end of fname */
4191 struct file_name_list *search_start = include; /* Chain of dirs to search */
4192 struct file_name_list *dsp; /* First in chain, if #include "..." */
4193 struct file_name_list *searchptr = 0;
4196 int f = -3; /* file number */
4197 struct include_file *inc = 0;
4199 int retried = 0; /* Have already tried macro
4200 expanding the include line*/
4201 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4207 if (importing && warn_import && !inhibit_warnings
4208 && !instack[indepth].system_header_p && !import_warning) {
4210 warning ("using `#import' is not recommended");
4211 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4212 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4213 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4214 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4215 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4216 fprintf (stderr, " ... <real contents of file> ...\n");
4217 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4218 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4219 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4220 fprintf (stderr, "when it is equipped with such a conditional.\n");
4226 SKIP_WHITE_SPACE (fin);
4227 /* Discard trailing whitespace so we can easily see
4228 if we have parsed all the significant chars we were given. */
4229 while (limit != fin && is_hor_space[limit[-1]]) limit--;
4230 fbeg = fend = (char *) alloca (limit - fin);
4236 /* Copy the operand text, concatenating the strings. */
4238 while (fin != limit) {
4239 while (fin != limit && *fin != '\"')
4244 /* If not at the end, there had better be another string. */
4245 /* Skip just horiz space, and don't go past limit. */
4246 while (fin != limit && is_hor_space[*fin]) fin++;
4247 if (fin != limit && *fin == '\"')
4254 /* We have "filename". Figure out directory this source
4255 file is coming from and put it on the front of the list. */
4257 /* If -I- was specified, don't search current dir, only spec'd ones. */
4258 if (ignore_srcdir) break;
4260 for (fp = &instack[indepth]; fp >= instack; fp--)
4265 if ((nam = fp->nominal_fname) != NULL) {
4266 /* Found a named file. Figure out dir of the file,
4267 and put it in front of the search list. */
4268 dsp = ((struct file_name_list *)
4269 alloca (sizeof (struct file_name_list) + strlen (nam)));
4270 strcpy (dsp->fname, nam);
4271 simplify_filename (dsp->fname);
4272 nam = base_name (dsp->fname);
4274 /* But for efficiency's sake, do not insert the dir
4275 if it matches the search list's first dir. */
4276 dsp->next = search_start;
4277 if (!search_start || strcmp (dsp->fname, search_start->fname)) {
4279 n = nam - dsp->fname;
4280 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4281 max_include_len = n + INCLUDE_LEN_FUDGE;
4283 dsp[0].got_name_map = 0;
4291 while (fin != limit && *fin != '>')
4293 if (*fin == '>' && fin + 1 == limit) {
4295 /* If -I-, start with the first -I dir after the -I-. */
4296 search_start = first_bracket_include;
4304 * Support '#include xyz' like VAX-C to allow for easy use of all the
4305 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4306 * code from case '<' is repeated here) and generates a warning.
4307 * (Note: macro expansion of `xyz' takes precedence.)
4309 if (retried && isalpha(*(U_CHAR *) (--fbeg))) {
4310 while (fin != limit && (!isspace(*fin)))
4312 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4315 /* If -I-, start with the first -I dir after the -I-. */
4316 search_start = first_bracket_include;
4324 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4327 /* Expand buffer and then remove any newline markers.
4328 We can't just tell expand_to_temp_buffer to omit the markers,
4329 since it would put extra spaces in include file names. */
4332 trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
4334 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4336 while (src != trybuf.bufp) {
4337 switch ((*limit++ = *src++)) {
4346 U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
4347 NULL_PTR, NULL_PTR, NULL_PTR);
4361 /* For #include_next, skip in the search path
4362 past the dir in which the containing file was found. */
4365 for (fp = &instack[indepth]; fp >= instack; fp--)
4366 if (fp->fname != NULL) {
4367 /* fp->dir is null if the containing file was specified
4368 with an absolute file name. In that case, don't skip anything. */
4370 search_start = fp->dir->next;
4376 flen = simplify_filename (fbeg);
4380 error ("empty file name in `#%s'", keyword->name);
4384 /* Allocate this permanently, because it gets stored in the definitions
4386 fname = xmalloc (max_include_len + flen + 1);
4387 /* + 1 above for terminating null. */
4389 system_include_depth += angle_brackets;
4391 /* If specified file name is absolute, just open it. */
4393 if (absolute_filename (fbeg)) {
4394 strcpy (fname, fbeg);
4395 f = open_include_file (fname, NULL_PTR, importing, &inc);
4399 struct bypass_dir *next;
4401 struct file_name_list *searchptr;
4402 } **bypass_slot = 0;
4404 /* Search directory path, trying to open the file.
4405 Copy each filename tried into FNAME. */
4407 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4409 if (searchptr == first_bracket_include) {
4410 /* Go to bypass directory if we know we've seen this file before. */
4411 static struct bypass_dir *bypass_hashtab[INCLUDE_HASHSIZE];
4412 struct bypass_dir *p;
4413 bypass_slot = &bypass_hashtab[hashf ((U_CHAR *) fbeg, flen,
4415 for (p = *bypass_slot; p; p = p->next)
4416 if (!strcmp (fbeg, p->fname)) {
4417 searchptr = p->searchptr;
4423 strcpy (fname, searchptr->fname);
4424 strcat (fname, fbeg);
4426 /* Change this 1/2 Unix 1/2 VMS file specification into a
4427 full VMS file specification */
4428 if (searchptr->fname[0]) {
4429 /* Fix up the filename */
4430 hack_vms_include_specification (fname);
4432 /* This is a normal VMS filespec, so use it unchanged. */
4433 strcpy (fname, fbeg);
4434 /* if it's '#include filename', add the missing .h */
4435 if (index(fname,'.')==NULL) {
4436 strcat (fname, ".h");
4440 f = open_include_file (fname, searchptr, importing, &inc);
4442 if (bypass_slot && searchptr != first_bracket_include) {
4443 /* This is the first time we found this include file,
4444 and we found it after first_bracket_include.
4445 Record its location so that we can bypass to here next time. */
4446 struct bypass_dir *p
4447 = (struct bypass_dir *) xmalloc (sizeof (struct bypass_dir));
4448 p->next = *bypass_slot;
4449 p->fname = fname + strlen (searchptr->fname);
4450 p->searchptr = searchptr;
4456 /* Our VMS hacks can produce invalid filespecs, so don't worry
4457 about errors other than EACCES. */
4458 if (errno == EACCES)
4461 if (errno != ENOENT && errno != ENOTDIR)
4471 /* The file was already included. */
4473 /* If generating dependencies and -MG was specified, we assume missing
4474 files are leaf files, living in the same directory as the source file
4475 or other similar place; these missing files may be generated from
4476 other files and may not exist yet (eg: y.tab.h). */
4477 } else if (print_deps_missing_files
4478 && (system_include_depth != 0) < print_deps)
4480 /* If it was requested as a system header file,
4481 then assume it belongs in the first place to look for such. */
4485 char *p = (char *) alloca (strlen (search_start->fname)
4486 + strlen (fbeg) + 1);
4487 strcpy (p, search_start->fname);
4489 deps_output (p, ' ');
4494 /* Otherwise, omit the directory, as if the file existed
4495 in the directory with the source. */
4496 deps_output (fbeg, ' ');
4499 /* If -M was specified, and this header file won't be added to the
4500 dependency list, then don't count this as an error, because we can
4501 still produce correct output. Otherwise, we can't produce correct
4502 output, because there may be dependencies we need inside the missing
4503 file, and we don't know what directory this missing file exists in. */
4504 else if (0 < print_deps && print_deps <= (system_include_depth != 0))
4505 warning ("No include path in which to find %s", fbeg);
4507 error_from_errno (fbeg);
4509 error ("No include path in which to find %s", fbeg);
4513 /* Actually process the file. */
4515 pcftry = (char *) alloca (strlen (fname) + 30);
4522 sprintf (pcftry, "%s%d", fname, pcfnum++);
4524 pcf = open (pcftry, O_RDONLY, 0666);
4529 if (fstat (pcf, &s) != 0)
4530 pfatal_with_name (pcftry);
4531 if (! INO_T_EQ (inc->st.st_ino, s.st_ino)
4532 || inc->st.st_dev != s.st_dev)
4534 pcfbuf = check_precompiled (pcf, &s, fname, &pcfbuflimit);
4535 /* Don't need it any more. */
4540 /* Don't need it at all. */
4545 } while (pcf != -1 && !pcfbuf);
4548 /* Actually process the file */
4550 pcfname = xmalloc (strlen (pcftry) + 1);
4551 strcpy (pcfname, pcftry);
4552 pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) pcfbuflimit,
4553 (U_CHAR *) fname, op);
4556 finclude (f, inc, op, is_system_include (fname), searchptr);
4559 system_include_depth -= angle_brackets;
4564 /* Return nonzero if the given FILENAME is an absolute pathname which
4565 designates a file within one of the known "system" include file
4566 directories. We assume here that if the given FILENAME looks like
4567 it is the name of a file which resides either directly in a "system"
4568 include file directory, or within any subdirectory thereof, then the
4569 given file must be a "system" include file. This function tells us
4570 if we should suppress pedantic errors/warnings for the given FILENAME.
4572 The value is 2 if the file is a C-language system header file
4573 for which C++ should (on most systems) assume `extern "C"'. */
4576 is_system_include (filename)
4577 register char *filename;
4579 struct file_name_list *searchptr;
4581 for (searchptr = first_system_include; searchptr;
4582 searchptr = searchptr->next)
4583 if (! strncmp (searchptr->fname, filename, strlen (searchptr->fname)))
4584 return searchptr->c_system_include_path + 1;
4588 /* Yield the non-directory suffix of a file name. */
4596 #if defined (__MSDOS__) || defined (_WIN32)
4597 if (isalpha (s[0]) && s[1] == ':') s += 2;
4600 if ((p = rindex (s, ':'))) s = p + 1; /* Skip device. */
4601 if ((p = rindex (s, ']'))) s = p + 1; /* Skip directory. */
4602 if ((p = rindex (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
4606 if ((p = rindex (s, '/'))) s = p + 1;
4607 #ifdef DIR_SEPARATOR
4608 if ((p = rindex (s, DIR_SEPARATOR))) s = p + 1;
4613 /* Yield nonzero if FILENAME is absolute (i.e. not relative). */
4616 absolute_filename (filename)
4619 #if defined (__MSDOS__) || (defined (_WIN32) && !defined (__CYGWIN32__))
4620 if (isalpha (filename[0]) && filename[1] == ':') filename += 2;
4622 #if defined (__CYGWIN32__)
4623 /* At present, any path that begins with a drive spec is absolute. */
4624 if (isalpha (filename[0]) && filename[1] == ':') return 1;
4626 if (filename[0] == '/') return 1;
4627 #ifdef DIR_SEPARATOR
4628 if (filename[0] == DIR_SEPARATOR) return 1;
4633 /* Remove unnecessary characters from FILENAME in place,
4634 to avoid unnecessary filename aliasing.
4635 Return the length of the resulting string.
4637 Do only the simplifications allowed by Posix.
4638 It is OK to miss simplifications on non-Posix hosts,
4639 since this merely leads to suboptimial results. */
4642 simplify_filename (filename)
4645 register char *from = filename;
4646 register char *to = filename;
4649 /* Remove redundant initial /s. */
4652 if (*++from == '/') {
4653 if (*++from == '/') {
4654 /* 3 or more initial /s are equivalent to 1 /. */
4655 while (*++from == '/')
4658 /* On some hosts // differs from /; Posix allows this. */
4659 static int slashslash_vs_slash;
4660 if (slashslash_vs_slash == 0) {
4662 slashslash_vs_slash = ((stat ("/", &s1) == 0 && stat ("//", &s2) == 0
4663 && INO_T_EQ (s1.st_ino, s2.st_ino)
4664 && s1.st_dev == s2.st_dev)
4667 if (slashslash_vs_slash < 0)
4675 if (from[0] == '.' && from[1] == '/')
4678 /* Copy this component and trailing /, if any. */
4679 while ((*to++ = *from++) != '/') {
4681 /* Trim . component at end of nonempty name. */
4682 to -= filename <= to - 3 && to[-3] == '/' && to[-2] == '.';
4684 /* Trim unnecessary trailing /s. */
4685 while (to0 < --to && to[-1] == '/')
4689 return to - filename;
4694 /* Skip /s after a /. */
4695 while (*from == '/')
4700 /* The file_name_map structure holds a mapping of file names for a
4701 particular directory. This mapping is read from the file named
4702 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4703 map filenames on a file system with severe filename restrictions,
4704 such as DOS. The format of the file name map file is just a series
4705 of lines with two tokens on each line. The first token is the name
4706 to map, and the second token is the actual name to use. */
4708 struct file_name_map
4710 struct file_name_map *map_next;
4715 #define FILE_NAME_MAP_FILE "header.gcc"
4717 /* Read a space delimited string of unlimited length from a stdio
4721 read_filename_string (ch, f)
4729 set = alloc = xmalloc (len + 1);
4733 while ((ch = getc (f)) != EOF && ! is_space[ch])
4735 if (set - alloc == len)
4738 alloc = xrealloc (alloc, len + 1);
4739 set = alloc + len / 2;
4749 /* Read the file name map file for DIRNAME.
4750 If DIRNAME is empty, read the map file for the working directory;
4751 otherwise DIRNAME must end in '/'. */
4753 static struct file_name_map *
4754 read_name_map (dirname)
4757 /* This structure holds a linked list of file name maps, one per
4759 struct file_name_map_list
4761 struct file_name_map_list *map_list_next;
4762 char *map_list_name;
4763 struct file_name_map *map_list_map;
4765 static struct file_name_map_list *map_list;
4766 register struct file_name_map_list *map_list_ptr;
4771 for (map_list_ptr = map_list; map_list_ptr;
4772 map_list_ptr = map_list_ptr->map_list_next)
4773 if (! strcmp (map_list_ptr->map_list_name, dirname))
4774 return map_list_ptr->map_list_map;
4776 map_list_ptr = ((struct file_name_map_list *)
4777 xmalloc (sizeof (struct file_name_map_list)));
4778 map_list_ptr->map_list_name = savestring (dirname);
4779 map_list_ptr->map_list_map = NULL;
4781 dirlen = strlen (dirname);
4782 name = (char *) alloca (dirlen + strlen (FILE_NAME_MAP_FILE) + 1);
4783 strcpy (name, dirname);
4784 strcat (name, FILE_NAME_MAP_FILE);
4785 f = fopen (name, "r");
4787 map_list_ptr->map_list_map = NULL;
4792 while ((ch = getc (f)) != EOF)
4795 struct file_name_map *ptr;
4800 from = read_filename_string (ch, f);
4801 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4803 to = read_filename_string (ch, f);
4805 simplify_filename (from);
4806 tolen = simplify_filename (to);
4808 ptr = ((struct file_name_map *)
4809 xmalloc (sizeof (struct file_name_map)));
4810 ptr->map_from = from;
4812 /* Make the real filename absolute. */
4813 if (absolute_filename (to))
4817 ptr->map_to = xmalloc (dirlen + tolen + 1);
4818 strcpy (ptr->map_to, dirname);
4819 strcat (ptr->map_to, to);
4823 ptr->map_next = map_list_ptr->map_list_map;
4824 map_list_ptr->map_list_map = ptr;
4826 while ((ch = getc (f)) != '\n')
4833 map_list_ptr->map_list_next = map_list;
4834 map_list = map_list_ptr;
4836 return map_list_ptr->map_list_map;
4839 /* Try to open include file FILENAME. SEARCHPTR is the directory
4840 being tried from the include file search path.
4841 IMPORTING is "" if we are importing, null otherwise.
4842 Return -2 if found, either a matching name or a matching inode.
4843 Otherwise, open the file and return a file descriptor if successful
4844 or -1 if unsuccessful.
4845 Unless unsuccessful, put a descriptor of the included file into *PINC.
4846 This function maps filenames on file systems based on information read by
4850 open_include_file (filename, searchptr, importing, pinc)
4852 struct file_name_list *searchptr;
4854 struct include_file **pinc;
4856 char *fname = remap_include_file (filename, searchptr);
4859 /* Look up FNAME in include_hashtab. */
4860 struct include_file **phead = &include_hashtab[hashf ((U_CHAR *) fname,
4863 struct include_file *inc, *head = *phead;
4864 for (inc = head; inc; inc = inc->next)
4865 if (!strcmp (fname, inc->fname))
4869 || ! inc->control_macro
4870 || (inc->control_macro[0] && ! lookup (inc->control_macro, -1, -1))) {
4872 fd = open (fname, O_RDONLY, 0);
4878 /* FNAME was not in include_hashtab; insert a new entry. */
4879 inc = (struct include_file *) xmalloc (sizeof (struct include_file));
4882 inc->control_macro = 0;
4883 inc->deps_output = 0;
4884 if (fstat (fd, &inc->st) != 0)
4885 pfatal_with_name (fname);
4888 /* Look for another file with the same inode and device. */
4889 if (lookup_ino_include (inc)
4890 && inc->control_macro
4891 && (!inc->control_macro[0] || lookup (inc->control_macro, -1, -1))) {
4897 /* For -M, add this file to the dependencies. */
4898 if (! inc->deps_output && (system_include_depth != 0) < print_deps) {
4899 inc->deps_output = 1;
4900 deps_output (fname, ' ');
4903 /* Handle -H option. */
4904 if (print_include_names)
4905 fprintf (stderr, "%*s%s\n", indepth, "", fname);
4909 inc->control_macro = importing;
4915 /* Return the remapped name of the the include file FILENAME.
4916 SEARCHPTR is the directory being tried from the include file path. */
4919 remap_include_file (filename, searchptr)
4921 struct file_name_list *searchptr;
4923 register struct file_name_map *map;
4924 register char *from;
4928 if (! searchptr->got_name_map)
4930 searchptr->name_map = read_name_map (searchptr->fname);
4931 searchptr->got_name_map = 1;
4934 /* Check the mapping for the directory we are using. */
4935 from = filename + strlen (searchptr->fname);
4936 for (map = searchptr->name_map; map; map = map->map_next)
4937 if (! strcmp (map->map_from, from))
4941 from = base_name (filename);
4943 if (from != filename || !searchptr)
4945 /* Try to find a mapping file for the particular directory we are
4946 looking in. Thus #include <sys/types.h> will look up sys/types.h
4947 in /usr/include/header.gcc and look up types.h in
4948 /usr/include/sys/header.gcc. */
4950 char *dir = (char *) alloca (from - filename + 1);
4951 bcopy (filename, dir, from - filename);
4952 dir[from - filename] = '\0';
4954 for (map = read_name_map (dir); map; map = map->map_next)
4955 if (! strcmp (map->map_from, from))
4962 /* Insert INC into the include file table, hashed by device and inode number.
4963 If a file with different name but same dev+ino was already in the table,
4964 return 1 and set INC's control macro to the already-known macro. */
4967 lookup_ino_include (inc)
4968 struct include_file *inc;
4970 int hash = ((unsigned) (inc->st.st_dev + INO_T_HASH (inc->st.st_ino))
4971 % INCLUDE_HASHSIZE);
4972 struct include_file *i = include_ino_hashtab[hash];
4974 include_ino_hashtab[hash] = inc;
4976 for (; i; i = i->next_ino)
4977 if (INO_T_EQ (inc->st.st_ino, i->st.st_ino)
4978 && inc->st.st_dev == i->st.st_dev) {
4979 inc->control_macro = i->control_macro;
4986 /* Process file descriptor F, which corresponds to include file INC,
4988 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4989 "system" include directories (as decided by the `is_system_include'
4991 DIRPTR is the link in the dir path through which this file was found,
4992 or 0 if the file name was absolute. */
4995 finclude (f, inc, op, system_header_p, dirptr)
4997 struct include_file *inc;
4999 int system_header_p;
5000 struct file_name_list *dirptr;
5002 char *fname = inc->fname;
5004 FILE_BUF *fp; /* For input stack frame */
5005 int missing_newline = 0;
5007 CHECK_DEPTH (return;);
5009 fp = &instack[indepth + 1];
5010 bzero ((char *) fp, sizeof (FILE_BUF));
5011 fp->nominal_fname = fp->fname = fname;
5015 fp->if_stack = if_stack;
5016 fp->system_header_p = system_header_p;
5019 if (S_ISREG (inc->st.st_mode)) {
5020 fp->buf = (U_CHAR *) xmalloc (inc->st.st_size + 2);
5023 /* Read the file contents, knowing that inc->st.st_size is an upper bound
5024 on the number of bytes we can read. */
5025 fp->length = safe_read (f, (char *) fp->buf, inc->st.st_size);
5026 if (fp->length < 0) goto nope;
5028 else if (S_ISDIR (inc->st.st_mode)) {
5029 error ("directory `%s' specified in #include", fname);
5033 /* Cannot count its file size before reading.
5034 First read the entire file into heap and
5035 copy them into buffer on stack. */
5040 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
5043 i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size);
5045 goto nope; /* error! */
5047 if (st_size != bsize)
5048 break; /* End of file */
5050 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
5053 fp->length = st_size;
5056 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
5057 /* Backslash-newline at end is not good enough. */
5058 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
5059 fp->buf[fp->length++] = '\n';
5060 missing_newline = 1;
5062 fp->buf[fp->length] = '\0';
5064 /* Close descriptor now, so nesting does not use lots of descriptors. */
5067 /* Must do this before calling trigraph_pcp, so that the correct file name
5068 will be printed in warning messages. */
5071 input_file_stack_tick++;
5076 output_line_directive (fp, op, 0, enter_file);
5079 if (missing_newline)
5082 if (pedantic && missing_newline)
5083 pedwarn ("file does not end in newline");
5086 input_file_stack_tick++;
5087 output_line_directive (&instack[indepth], op, 0, leave_file);
5093 perror_with_name (fname);
5098 /* Record that inclusion of the include file INC
5099 should be controlled by the macro named MACRO_NAME.
5100 This means that trying to include the file again
5101 will do something if that macro is defined. */
5104 record_control_macro (inc, macro_name)
5105 struct include_file *inc;
5108 if (!inc->control_macro || inc->control_macro[0])
5109 inc->control_macro = macro_name;
5112 /* Load the specified precompiled header into core, and verify its
5113 preconditions. PCF indicates the file descriptor to read, which must
5114 be a regular file. *ST is its file status.
5115 FNAME indicates the file name of the original header.
5116 *LIMIT will be set to an address one past the end of the file.
5117 If the preconditions of the file are not satisfied, the buffer is
5118 freed and we return 0. If the preconditions are satisfied, return
5119 the address of the buffer following the preconditions. The buffer, in
5120 this case, should never be freed because various pieces of it will
5121 be referred to until all precompiled strings are output at the end of
5125 check_precompiled (pcf, st, fname, limit)
5138 if (S_ISREG (st->st_mode))
5140 buf = xmalloc (st->st_size + 2);
5141 length = safe_read (pcf, buf, st->st_size);
5148 if (length > 0 && buf[length-1] != '\n')
5149 buf[length++] = '\n';
5152 *limit = buf + length;
5154 /* File is in core. Check the preconditions. */
5155 if (!check_preconditions (buf))
5157 for (cp = buf; *cp; cp++)
5160 fprintf (stderr, "Using preinclude %s\n", fname);
5166 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5172 /* PREC (null terminated) points to the preconditions of a
5173 precompiled header. These are a series of #define and #undef
5174 lines which must match the current contents of the hash
5178 check_preconditions (prec)
5185 lineend = index (prec, '\n');
5187 if (*prec++ != '#') {
5188 error ("Bad format encountered while reading precompiled file");
5191 if (!strncmp (prec, "define", 6)) {
5195 mdef = create_definition ((U_CHAR *) prec, (U_CHAR *) lineend, NULL_PTR);
5200 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5201 || (hp->type != T_MACRO && hp->type != T_CONST)
5202 || (hp->type == T_MACRO
5203 && !compare_defs (mdef.defn, hp->value.defn)
5204 && (mdef.defn->length != 2
5205 || mdef.defn->expansion[0] != '\n'
5206 || mdef.defn->expansion[1] != ' ')))
5208 } else if (!strncmp (prec, "undef", 5)) {
5213 while (is_hor_space[(U_CHAR) *prec])
5216 while (is_idchar[(U_CHAR) *prec])
5220 if (lookup ((U_CHAR *) name, len, -1))
5223 error ("Bad format encountered while reading precompiled file");
5228 /* They all passed successfully */
5232 /* Process the main body of a precompiled file. BUF points to the
5233 string section of the file, following the preconditions. LIMIT is one
5234 character past the end. NAME is the name of the file being read
5235 in. OP is the main output buffer. */
5238 pcfinclude (buf, limit, name, op)
5239 U_CHAR *buf, *limit, *name;
5246 /* First in the file comes 4 bytes indicating the number of strings, */
5247 /* in network byte order. (MSB first). */
5249 nstrings = (nstrings << 8) | *cp++;
5250 nstrings = (nstrings << 8) | *cp++;
5251 nstrings = (nstrings << 8) | *cp++;
5253 /* Looping over each string... */
5254 while (nstrings--) {
5255 U_CHAR *string_start;
5256 U_CHAR *endofthiskey;
5260 /* Each string starts with a STRINGDEF structure (str), followed */
5261 /* by the text of the string (string_start) */
5263 /* First skip to a longword boundary */
5264 /* ??? Why a 4-byte boundary? On all machines? */
5265 /* NOTE: This works correctly even if HOST_WIDE_INT
5266 is narrower than a pointer.
5267 Do not try risky measures here to get another type to use!
5268 Do not include stddef.h--it will fail! */
5269 if ((HOST_WIDE_INT) cp & 3)
5270 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5272 /* Now get the string. */
5273 str = (STRINGDEF *) (GENERIC_PTR) cp;
5274 string_start = cp += sizeof (STRINGDEF);
5276 for (; *cp; cp++) /* skip the string */
5279 /* We need to macro expand the string here to ensure that the
5280 proper definition environment is in place. If it were only
5281 expanded when we find out it is needed, macros necessary for
5282 its proper expansion might have had their definitions changed. */
5283 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5284 /* Lineno is already set in the precompiled file */
5285 str->contents = tmpbuf.buf;
5286 str->len = tmpbuf.length;
5288 str->filename = name;
5289 str->output_mark = outbuf.bufp - outbuf.buf;
5292 *stringlist_tailp = str;
5293 stringlist_tailp = &str->chain;
5295 /* Next comes a fourbyte number indicating the number of keys
5298 nkeys = (nkeys << 8) | *cp++;
5299 nkeys = (nkeys << 8) | *cp++;
5300 nkeys = (nkeys << 8) | *cp++;
5302 /* If this number is -1, then the string is mandatory. */
5306 /* Otherwise, for each key, */
5307 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5308 KEYDEF *kp = (KEYDEF *) (GENERIC_PTR) cp;
5311 /* It starts with a KEYDEF structure */
5312 cp += sizeof (KEYDEF);
5314 /* Find the end of the key. At the end of this for loop we
5315 advance CP to the start of the next key using this variable. */
5316 endofthiskey = cp + strlen ((char *) cp);
5319 /* Expand the key, and enter it into the hash table. */
5320 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5321 tmpbuf.bufp = tmpbuf.buf;
5323 while (is_hor_space[*tmpbuf.bufp])
5325 if (!is_idstart[*tmpbuf.bufp]
5326 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5331 hp = lookup (tmpbuf.bufp, -1, -1);
5334 install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
5336 else if (hp->type == T_PCSTRING) {
5337 kp->chain = hp->value.keydef;
5338 hp->value.keydef = kp;
5344 /* This output_line_directive serves to switch us back to the current
5345 input file in case some of these strings get output (which will
5346 result in line directives for the header file being output). */
5347 output_line_directive (&instack[indepth], op, 0, enter_file);
5350 /* Called from rescan when it hits a key for strings. Mark them all
5351 used and clean up. */
5359 for (kp = hp->value.keydef; kp; kp = kp->chain)
5360 kp->str->writeflag = 1;
5364 /* Write the output, interspersing precompiled strings in their
5365 appropriate places. */
5370 STRINGDEF *next_string;
5371 U_CHAR *cur_buf_loc;
5372 int line_directive_len = 80;
5373 char *line_directive = xmalloc (line_directive_len);
5376 /* In each run through the loop, either cur_buf_loc ==
5377 next_string_loc, in which case we print a series of strings, or
5378 it is less than next_string_loc, in which case we write some of
5380 cur_buf_loc = outbuf.buf;
5381 next_string = stringlist;
5383 while (cur_buf_loc < outbuf.bufp || next_string) {
5385 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5386 if (next_string->writeflag) {
5387 len = 4 * strlen ((char *) next_string->filename) + 32;
5388 while (len > line_directive_len)
5389 line_directive = xrealloc (line_directive,
5390 line_directive_len *= 2);
5391 sprintf (line_directive, "\n# %d ", next_string->lineno);
5392 strcpy (quote_string (line_directive + strlen (line_directive),
5393 (char *) next_string->filename),
5395 safe_write (fileno (stdout), line_directive, strlen (line_directive));
5396 safe_write (fileno (stdout),
5397 (char *) next_string->contents, next_string->len);
5399 next_string = next_string->chain;
5403 ? (next_string->output_mark
5404 - (cur_buf_loc - outbuf.buf))
5405 : outbuf.bufp - cur_buf_loc);
5407 safe_write (fileno (stdout), (char *) cur_buf_loc, len);
5411 free (line_directive);
5414 /* Pass a directive through to the output file.
5415 BUF points to the contents of the directive, as a contiguous string.
5416 LIMIT points to the first character past the end of the directive.
5417 KEYWORD is the keyword-table entry for the directive. */
5420 pass_thru_directive (buf, limit, op, keyword)
5421 U_CHAR *buf, *limit;
5423 struct directive *keyword;
5425 register unsigned keyword_length = keyword->length;
5427 check_expand (op, 1 + keyword_length + (limit - buf));
5429 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5430 op->bufp += keyword_length;
5431 if (limit != buf && buf[0] != ' ')
5433 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5434 op->bufp += (limit - buf);
5437 /* Count the line we have just made in the output,
5438 to get in sync properly. */
5443 /* The arglist structure is built by do_define to tell
5444 collect_definition where the argument names begin. That
5445 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5446 would contain pointers to the strings x, y, and z.
5447 Collect_definition would then build a DEFINITION node,
5448 with reflist nodes pointing to the places x, y, and z had
5449 appeared. So the arglist is just convenience data passed
5450 between these two routines. It is not kept around after
5451 the current #define has been processed and entered into the
5455 struct arglist *next;
5462 /* Create a DEFINITION node from a #define directive. Arguments are
5463 as for do_define. */
5466 create_definition (buf, limit, op)
5467 U_CHAR *buf, *limit;
5470 U_CHAR *bp; /* temp ptr into input buffer */
5471 U_CHAR *symname; /* remember where symbol name starts */
5472 int sym_length; /* and how long it is */
5473 int line = instack[indepth].lineno;
5474 char *file = instack[indepth].nominal_fname;
5478 int arglengths = 0; /* Accumulate lengths of arg names
5479 plus number of args. */
5484 while (is_hor_space[*bp])
5487 symname = bp; /* remember where it starts */
5488 sym_length = check_macro_name (bp, "macro");
5491 /* Lossage will occur if identifiers or control keywords are broken
5492 across lines using backslash. This is not the right place to take
5496 struct arglist *arg_ptrs = NULL;
5499 bp++; /* skip '(' */
5500 SKIP_WHITE_SPACE (bp);
5502 /* Loop over macro argument names. */
5503 while (*bp != ')') {
5504 struct arglist *temp;
5506 temp = (struct arglist *) alloca (sizeof (struct arglist));
5508 temp->next = arg_ptrs;
5509 temp->argno = argno++;
5510 temp->rest_args = 0;
5514 pedwarn ("another parameter follows `%s'",
5517 if (!is_idstart[*bp])
5518 pedwarn ("invalid character in macro parameter name");
5520 /* Find the end of the arg name. */
5521 while (is_idchar[*bp]) {
5523 /* do we have a "special" rest-args extension here? */
5524 if (limit - bp > REST_EXTENSION_LENGTH &&
5525 bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5527 temp->rest_args = 1;
5531 temp->length = bp - temp->name;
5533 bp += REST_EXTENSION_LENGTH;
5534 arglengths += temp->length + 2;
5535 SKIP_WHITE_SPACE (bp);
5536 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5537 error ("badly punctuated parameter list in `#define'");
5542 SKIP_WHITE_SPACE (bp);
5543 /* A comma at this point can only be followed by an identifier. */
5544 if (!is_idstart[*bp]) {
5545 error ("badly punctuated parameter list in `#define'");
5550 error ("unterminated parameter list in `#define'");
5554 struct arglist *otemp;
5556 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5557 if (temp->length == otemp->length &&
5558 bcmp (temp->name, otemp->name, temp->length) == 0) {
5559 error ("duplicate argument name `%.*s' in `#define'",
5560 temp->length, temp->name);
5566 ++bp; /* skip paren */
5567 SKIP_WHITE_SPACE (bp);
5568 /* now everything from bp before limit is the definition. */
5569 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5570 defn->rest_args = rest_args;
5572 /* Now set defn->args.argnames to the result of concatenating
5573 the argument names in reverse order
5574 with comma-space between them. */
5575 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5577 struct arglist *temp;
5579 for (temp = arg_ptrs; temp; temp = temp->next) {
5580 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5582 if (temp->next != 0) {
5583 defn->args.argnames[i++] = ',';
5584 defn->args.argnames[i++] = ' ';
5587 defn->args.argnames[i] = 0;
5590 /* Simple expansion or empty definition. */
5594 if (is_hor_space[*bp]) {
5596 SKIP_WHITE_SPACE (bp);
5597 } else if (sym_length) {
5599 case '!': case '"': case '#': case '%': case '&': case '\'':
5600 case ')': case '*': case '+': case ',': case '-': case '.':
5601 case '/': case ':': case ';': case '<': case '=': case '>':
5602 case '?': case '[': case '\\': case ']': case '^': case '{':
5603 case '|': case '}': case '~':
5604 warning ("missing white space after `#define %.*s'",
5605 sym_length, symname);
5609 pedwarn ("missing white space after `#define %.*s'",
5610 sym_length, symname);
5615 /* Now everything from bp before limit is the definition. */
5616 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5617 defn->args.argnames = (U_CHAR *) "";
5623 /* OP is null if this is a predefinition */
5624 defn->predefined = !op;
5626 mdef.symnam = symname;
5627 mdef.symlen = sym_length;
5636 /* Process a #define directive.
5637 BUF points to the contents of the #define directive, as a contiguous string.
5638 LIMIT points to the first character past the end of the definition.
5639 KEYWORD is the keyword-table entry for #define. */
5642 do_define (buf, limit, op, keyword)
5643 U_CHAR *buf, *limit;
5645 struct directive *keyword;
5650 /* If this is a precompiler run (with -pcp) pass thru #define directives. */
5651 if (pcp_outfile && op)
5652 pass_thru_directive (buf, limit, op, keyword);
5654 mdef = create_definition (buf, limit, op);
5658 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5662 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5664 /* Redefining a precompiled key is ok. */
5665 if (hp->type == T_PCSTRING)
5667 /* Redefining a macro is ok if the definitions are the same. */
5668 else if (hp->type == T_MACRO)
5669 ok = ! compare_defs (mdef.defn, hp->value.defn);
5670 /* Redefining a constant is ok with -D. */
5671 else if (hp->type == T_CONST)
5672 ok = ! done_initializing;
5673 /* Print the warning if it's not ok. */
5675 /* If we are passing through #define and #undef directives, do
5676 that for this re-definition now. */
5677 if (debug_output && op)
5678 pass_thru_directive (buf, limit, op, keyword);
5680 pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam);
5681 if (hp->type == T_MACRO)
5682 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5683 "this is the location of the previous definition");
5685 /* Replace the old definition. */
5687 hp->value.defn = mdef.defn;
5689 /* If we are passing through #define and #undef directives, do
5690 that for this new definition now. */
5691 if (debug_output && op)
5692 pass_thru_directive (buf, limit, op, keyword);
5693 install (mdef.symnam, mdef.symlen, T_MACRO,
5694 (char *) mdef.defn, hashcode);
5705 /* Check a purported macro name SYMNAME, and yield its length.
5706 USAGE is the kind of name this is intended for. */
5709 check_macro_name (symname, usage)
5716 for (p = symname; is_idchar[*p]; p++)
5718 sym_length = p - symname;
5719 if (sym_length == 0)
5720 error ("invalid %s name", usage);
5721 else if (!is_idstart[*symname]
5722 || (sym_length == 7 && ! bcmp (symname, "defined", 7)))
5723 error ("invalid %s name `%.*s'", usage, sym_length, symname);
5727 /* Return zero if two DEFINITIONs are isomorphic. */
5730 compare_defs (d1, d2)
5731 DEFINITION *d1, *d2;
5733 register struct reflist *a1, *a2;
5734 register U_CHAR *p1 = d1->expansion;
5735 register U_CHAR *p2 = d2->expansion;
5738 if (d1->nargs != d2->nargs)
5740 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5742 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5743 a1 = a1->next, a2 = a2->next) {
5744 if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars))
5745 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5746 || a1->argno != a2->argno
5747 || a1->stringify != a2->stringify
5748 || a1->raw_before != a2->raw_before
5749 || a1->raw_after != a2->raw_after)
5757 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5758 p2, d2->length - (p2 - d2->expansion), 1))
5763 /* Return 1 if two parts of two macro definitions are effectively different.
5764 One of the parts starts at BEG1 and has LEN1 chars;
5765 the other has LEN2 chars at BEG2.
5766 Any sequence of whitespace matches any other sequence of whitespace.
5767 FIRST means these parts are the first of a macro definition;
5768 so ignore leading whitespace entirely.
5769 LAST means these parts are the last of a macro definition;
5770 so ignore trailing whitespace entirely. */
5773 comp_def_part (first, beg1, len1, beg2, len2, last)
5775 U_CHAR *beg1, *beg2;
5779 register U_CHAR *end1 = beg1 + len1;
5780 register U_CHAR *end2 = beg2 + len2;
5782 while (beg1 != end1 && is_space[*beg1]) beg1++;
5783 while (beg2 != end2 && is_space[*beg2]) beg2++;
5786 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5787 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5789 while (beg1 != end1 && beg2 != end2) {
5790 if (is_space[*beg1] && is_space[*beg2]) {
5791 while (beg1 != end1 && is_space[*beg1]) beg1++;
5792 while (beg2 != end2 && is_space[*beg2]) beg2++;
5793 } else if (*beg1 == *beg2) {
5797 return (beg1 != end1) || (beg2 != end2);
5800 /* Read a replacement list for a macro with parameters.
5801 Build the DEFINITION structure.
5802 Reads characters of text starting at BUF until END.
5803 ARGLIST specifies the formal parameters to look for
5804 in the text of the definition; NARGS is the number of args
5805 in that list, or -1 for a macro name that wants no argument list.
5806 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5807 and NAMELEN is its length in characters.
5809 Note that comments, backslash-newlines, and leading white space
5810 have already been deleted from the argument. */
5812 /* If there is no trailing whitespace, a Newline Space is added at the end
5813 to prevent concatenation that would be contrary to the standard. */
5816 collect_expansion (buf, end, nargs, arglist)
5819 struct arglist *arglist;
5822 register U_CHAR *p, *limit, *lastp, *exp_p;
5823 struct reflist *endpat = NULL;
5824 /* Pointer to first nonspace after last ## seen. */
5826 /* Pointer to first nonspace after last single-# seen. */
5827 U_CHAR *stringify = 0;
5828 /* How those tokens were spelled. */
5829 enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
5830 enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
5832 int expected_delimiter = '\0';
5834 /* Scan thru the replacement list, ignoring comments and quoted
5835 strings, picking up on the macro calls. It does a linear search
5836 thru the arg list on every potential symbol. Profiling might say
5837 that something smarter should happen. */
5842 /* Find the beginning of the trailing whitespace. */
5845 while (p < limit && is_space[limit[-1]]) limit--;
5847 /* Allocate space for the text in the macro definition.
5848 Each input char may or may not need 1 byte,
5849 so this is an upper bound.
5850 The extra 3 are for invented trailing newline-marker and final null. */
5851 maxsize = (sizeof (DEFINITION)
5853 defn = (DEFINITION *) xcalloc (1, maxsize);
5855 defn->nargs = nargs;
5856 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5861 : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
5862 error ("`##' at start of macro definition");
5863 p += p[0] == '#' ? 2 : 4;
5866 /* Process the main body of the definition. */
5868 int skipped_arg = 0;
5869 register U_CHAR c = *p++;
5877 if (expected_delimiter != '\0') {
5878 if (c == expected_delimiter)
5879 expected_delimiter = '\0';
5881 expected_delimiter = c;
5885 if (p < limit && expected_delimiter) {
5886 /* In a string, backslash goes through
5887 and makes next char ordinary. */
5893 if (!expected_delimiter && *p == ':') {
5894 /* %: is not a digraph if preceded by an odd number of '<'s. */
5896 while (buf < p0 && p0[-1] == '<')
5899 /* Treat %:%: as ## and %: as #. */
5900 if (p[1] == '%' && p[2] == ':') {
5902 goto sharp_sharp_token;
5913 /* # is ordinary inside a string. */
5914 if (expected_delimiter)
5918 /* ##: concatenate preceding and following tokens. */
5919 /* Take out the first #, discard preceding whitespace. */
5921 while (exp_p > lastp && is_hor_space[exp_p[-1]])
5923 /* Skip the second #. */
5925 concat_sharp_token_type = c;
5926 if (is_hor_space[*p]) {
5927 concat_sharp_token_type = c + 1;
5929 SKIP_WHITE_SPACE (p);
5933 error ("`##' at end of macro definition");
5934 } else if (nargs >= 0) {
5935 /* Single #: stringify following argument ref.
5936 Don't leave the # in the expansion. */
5939 stringify_sharp_token_type = c;
5940 if (is_hor_space[*p]) {
5941 stringify_sharp_token_type = c + 1;
5943 SKIP_WHITE_SPACE (p);
5945 if (! is_idstart[*p] || nargs == 0)
5946 error ("`#' operator is not followed by a macro argument name");
5953 /* In -traditional mode, recognize arguments inside strings and
5954 and character constants, and ignore special properties of #.
5955 Arguments inside strings are considered "stringified", but no
5956 extra quote marks are supplied. */
5960 if (expected_delimiter != '\0') {
5961 if (c == expected_delimiter)
5962 expected_delimiter = '\0';
5964 expected_delimiter = c;
5968 /* Backslash quotes delimiters and itself, but not macro args. */
5969 if (expected_delimiter != 0 && p < limit
5970 && (*p == expected_delimiter || *p == '\\')) {
5977 if (expected_delimiter != '\0') /* No comments inside strings. */
5980 /* If we find a comment that wasn't removed by handle_directive,
5981 this must be -traditional. So replace the comment with
5984 while (++p < limit) {
5985 if (p[0] == '*' && p[1] == '/') {
5991 /* Mark this as a concatenation-point, as if it had been ##. */
5999 /* Handle the start of a symbol. */
6000 if (is_idchar[c] && nargs > 0) {
6001 U_CHAR *id_beg = p - 1;
6005 while (p != limit && is_idchar[*p]) p++;
6006 id_len = p - id_beg;
6008 if (is_idstart[c]) {
6009 register struct arglist *arg;
6011 for (arg = arglist; arg != NULL; arg = arg->next) {
6012 struct reflist *tpat;
6014 if (arg->name[0] == c
6015 && arg->length == id_len
6016 && bcmp (arg->name, id_beg, id_len) == 0) {
6017 enum sharp_token_type tpat_stringify;
6018 if (expected_delimiter) {
6019 if (warn_stringify) {
6021 warning ("macro argument `%.*s' is stringified.",
6024 warning ("macro arg `%.*s' would be stringified with -traditional.",
6028 /* If ANSI, don't actually substitute inside a string. */
6031 tpat_stringify = SHARP_TOKEN;
6034 = (stringify == id_beg
6035 ? stringify_sharp_token_type : NO_SHARP_TOKEN);
6037 /* make a pat node for this arg and append it to the end of
6039 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
6042 = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
6043 tpat->raw_after = NO_SHARP_TOKEN;
6044 tpat->rest_args = arg->rest_args;
6045 tpat->stringify = tpat_stringify;
6048 defn->pattern = tpat;
6050 endpat->next = tpat;
6053 tpat->argno = arg->argno;
6054 tpat->nchars = exp_p - lastp;
6056 register U_CHAR *p1 = p;
6057 SKIP_WHITE_SPACE (p1);
6060 : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
6061 tpat->raw_after = p1[0] + (p != p1);
6063 lastp = exp_p; /* place to start copying from next time */
6070 /* If this was not a macro arg, copy it into the expansion. */
6071 if (! skipped_arg) {
6072 register U_CHAR *lim1 = p;
6076 if (stringify == id_beg)
6077 error ("`#' operator should be followed by a macro argument name");
6082 if (!traditional && expected_delimiter == 0) {
6083 /* If ANSI, put in a newline-space marker to prevent token pasting.
6084 But not if "inside a string" (which in ANSI mode happens only for
6092 defn->length = exp_p - defn->expansion;
6094 /* Crash now if we overrun the allocated size. */
6095 if (defn->length + 1 > maxsize)
6099 /* This isn't worth the time it takes. */
6100 /* give back excess storage */
6101 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
6108 do_assert (buf, limit, op, keyword)
6109 U_CHAR *buf, *limit;
6111 struct directive *keyword;
6113 U_CHAR *bp; /* temp ptr into input buffer */
6114 U_CHAR *symname; /* remember where symbol name starts */
6115 int sym_length; /* and how long it is */
6116 struct arglist *tokens = NULL;
6118 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6119 pedwarn ("ANSI C does not allow `#assert'");
6123 while (is_hor_space[*bp])
6126 symname = bp; /* remember where it starts */
6127 sym_length = check_macro_name (bp, "assertion");
6129 /* #define doesn't do this, but we should. */
6130 SKIP_WHITE_SPACE (bp);
6132 /* Lossage will occur if identifiers or control tokens are broken
6133 across lines using backslash. This is not the right place to take
6137 error ("missing token-sequence in `#assert'");
6144 bp++; /* skip '(' */
6145 SKIP_WHITE_SPACE (bp);
6147 tokens = read_token_list (&bp, limit, &error_flag);
6151 error ("empty token-sequence in `#assert'");
6155 ++bp; /* skip paren */
6156 SKIP_WHITE_SPACE (bp);
6159 /* If this name isn't already an assertion name, make it one.
6160 Error if it was already in use in some other way. */
6163 ASSERTION_HASHNODE *hp;
6164 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6165 struct tokenlist_list *value
6166 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
6168 hp = assertion_lookup (symname, sym_length, hashcode);
6170 if (sym_length == 7 && ! bcmp (symname, "defined", 7))
6171 error ("`defined' redefined as assertion");
6172 hp = assertion_install (symname, sym_length, hashcode);
6175 /* Add the spec'd token-sequence to the list of such. */
6176 value->tokens = tokens;
6177 value->next = hp->value;
6185 do_unassert (buf, limit, op, keyword)
6186 U_CHAR *buf, *limit;
6188 struct directive *keyword;
6190 U_CHAR *bp; /* temp ptr into input buffer */
6191 U_CHAR *symname; /* remember where symbol name starts */
6192 int sym_length; /* and how long it is */
6194 struct arglist *tokens = NULL;
6195 int tokens_specified = 0;
6197 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6198 pedwarn ("ANSI C does not allow `#unassert'");
6202 while (is_hor_space[*bp])
6205 symname = bp; /* remember where it starts */
6206 sym_length = check_macro_name (bp, "assertion");
6208 /* #define doesn't do this, but we should. */
6209 SKIP_WHITE_SPACE (bp);
6211 /* Lossage will occur if identifiers or control tokens are broken
6212 across lines using backslash. This is not the right place to take
6218 bp++; /* skip '(' */
6219 SKIP_WHITE_SPACE (bp);
6221 tokens = read_token_list (&bp, limit, &error_flag);
6225 error ("empty token list in `#unassert'");
6229 tokens_specified = 1;
6231 ++bp; /* skip paren */
6232 SKIP_WHITE_SPACE (bp);
6236 ASSERTION_HASHNODE *hp;
6237 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6238 struct tokenlist_list *tail, *prev;
6240 hp = assertion_lookup (symname, sym_length, hashcode);
6244 /* If no token list was specified, then eliminate this assertion
6246 if (! tokens_specified) {
6247 struct tokenlist_list *next;
6248 for (tail = hp->value; tail; tail = next) {
6250 free_token_list (tail->tokens);
6253 delete_assertion (hp);
6255 /* If a list of tokens was given, then delete any matching list. */
6260 struct tokenlist_list *next = tail->next;
6261 if (compare_token_lists (tail->tokens, tokens)) {
6265 hp->value = tail->next;
6266 free_token_list (tail->tokens);
6279 /* Test whether there is an assertion named NAME
6280 and optionally whether it has an asserted token list TOKENS.
6281 NAME is not null terminated; its length is SYM_LENGTH.
6282 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6285 check_assertion (name, sym_length, tokens_specified, tokens)
6288 int tokens_specified;
6289 struct arglist *tokens;
6291 ASSERTION_HASHNODE *hp;
6292 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6294 if (pedantic && !instack[indepth].system_header_p)
6295 pedwarn ("ANSI C does not allow testing assertions");
6297 hp = assertion_lookup (name, sym_length, hashcode);
6299 /* It is not an assertion; just return false. */
6302 /* If no token list was specified, then value is 1. */
6303 if (! tokens_specified)
6307 struct tokenlist_list *tail;
6311 /* If a list of tokens was given,
6312 then succeed if the assertion records a matching list. */
6315 if (compare_token_lists (tail->tokens, tokens))
6320 /* Fail if the assertion has no matching list. */
6325 /* Compare two lists of tokens for equality including order of tokens. */
6328 compare_token_lists (l1, l2)
6329 struct arglist *l1, *l2;
6332 if (l1->length != l2->length)
6334 if (bcmp (l1->name, l2->name, l1->length))
6340 /* Succeed if both lists end at the same time. */
6344 /* Read a space-separated list of tokens ending in a close parenthesis.
6345 Return a list of strings, in the order they were written.
6346 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6347 Parse the text starting at *BPP, and update *BPP.
6348 Don't parse beyond LIMIT. */
6350 static struct arglist *
6351 read_token_list (bpp, limit, error_flag)
6356 struct arglist *token_ptrs = 0;
6362 /* Loop over the assertion value tokens. */
6364 struct arglist *temp;
6368 /* Find the end of the token. */
6372 } else if (*bp == ')') {
6377 } else if (*bp == '"' || *bp == '\'')
6378 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6380 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6381 && *bp != '"' && *bp != '\'' && bp != limit)
6384 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6385 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6386 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6387 temp->name[bp - beg] = 0;
6388 temp->next = token_ptrs;
6390 temp->length = bp - beg;
6392 SKIP_WHITE_SPACE (bp);
6395 error ("unterminated token sequence in `#assert' or `#unassert'");
6402 /* We accumulated the names in reverse order.
6403 Now reverse them to get the proper order. */
6405 register struct arglist *prev = 0, *this, *next;
6406 for (this = token_ptrs; this; this = next) {
6416 free_token_list (tokens)
6417 struct arglist *tokens;
6420 struct arglist *next = tokens->next;
6421 free (tokens->name);
6427 /* Install a name in the assertion hash table.
6429 If LEN is >= 0, it is the length of the name.
6430 Otherwise, compute the length by scanning the entire name.
6432 If HASH is >= 0, it is the precomputed hash code.
6433 Otherwise, compute the hash code. */
6435 static ASSERTION_HASHNODE *
6436 assertion_install (name, len, hash)
6441 register ASSERTION_HASHNODE *hp;
6442 register int i, bucket;
6443 register U_CHAR *p, *q;
6445 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6446 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6448 hp->bucket_hdr = &assertion_hashtab[bucket];
6449 hp->next = assertion_hashtab[bucket];
6450 assertion_hashtab[bucket] = hp;
6452 if (hp->next != NULL)
6453 hp->next->prev = hp;
6456 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6459 for (i = 0; i < len; i++)
6465 /* Find the most recent hash node for name name (ending with first
6466 non-identifier char) installed by install
6468 If LEN is >= 0, it is the length of the name.
6469 Otherwise, compute the length by scanning the entire name.
6471 If HASH is >= 0, it is the precomputed hash code.
6472 Otherwise, compute the hash code. */
6474 static ASSERTION_HASHNODE *
6475 assertion_lookup (name, len, hash)
6480 register ASSERTION_HASHNODE *bucket;
6482 bucket = assertion_hashtab[hash];
6484 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
6486 bucket = bucket->next;
6492 delete_assertion (hp)
6493 ASSERTION_HASHNODE *hp;
6496 if (hp->prev != NULL)
6497 hp->prev->next = hp->next;
6498 if (hp->next != NULL)
6499 hp->next->prev = hp->prev;
6501 /* Make sure that the bucket chain header that the deleted guy was
6502 on points to the right thing afterwards. */
6503 if (hp == *hp->bucket_hdr)
6504 *hp->bucket_hdr = hp->next;
6510 * interpret #line directive. Remembers previously seen fnames
6511 * in its very own hash table.
6513 #define FNAME_HASHSIZE 37
6516 do_line (buf, limit, op, keyword)
6517 U_CHAR *buf, *limit;
6519 struct directive *keyword;
6521 register U_CHAR *bp;
6522 FILE_BUF *ip = &instack[indepth];
6525 enum file_change_code file_change = same_file;
6527 /* Expand any macros. */
6528 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6530 /* Point to macroexpanded line, which is null-terminated now. */
6532 SKIP_WHITE_SPACE (bp);
6534 if (!isdigit (*bp)) {
6535 error ("invalid format `#line' directive");
6539 /* The Newline at the end of this line remains to be processed.
6540 To put the next line at the specified line number,
6541 we must store a line number now that is one less. */
6542 new_lineno = atoi ((char *) bp) - 1;
6544 /* NEW_LINENO is one less than the actual line number here. */
6545 if (pedantic && new_lineno < 0)
6546 pedwarn ("line number out of range in `#line' directive");
6548 /* skip over the line number. */
6549 while (isdigit (*bp))
6552 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6553 if (*bp && !is_space[*bp]) {
6554 error ("invalid format `#line' directive");
6559 SKIP_WHITE_SPACE (bp);
6562 static HASHNODE *fname_table[FNAME_HASHSIZE];
6563 HASHNODE *hp, **hash_bucket;
6569 /* Turn the file name, which is a character string literal,
6570 into a null-terminated string. Do this in place. */
6573 switch ((*p++ = *bp++)) {
6575 error ("invalid format `#line' directive");
6580 char *bpc = (char *) bp;
6581 HOST_WIDE_INT c = parse_escape (&bpc, (HOST_WIDE_INT) (U_CHAR) (-1));
6582 bp = (U_CHAR *) bpc;
6595 fname_length = p - fname;
6597 SKIP_WHITE_SPACE (bp);
6600 pedwarn ("garbage at end of `#line' directive");
6602 file_change = enter_file;
6603 else if (*bp == '2')
6604 file_change = leave_file;
6605 else if (*bp == '3')
6606 ip->system_header_p = 1;
6607 else if (*bp == '4')
6608 ip->system_header_p = 2;
6610 error ("invalid format `#line' directive");
6615 SKIP_WHITE_SPACE (bp);
6617 ip->system_header_p = 1;
6619 SKIP_WHITE_SPACE (bp);
6622 ip->system_header_p = 2;
6624 SKIP_WHITE_SPACE (bp);
6627 error ("invalid format `#line' directive");
6633 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6634 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6635 if (hp->length == fname_length &&
6636 bcmp (hp->value.cpval, fname, fname_length) == 0) {
6637 ip->nominal_fname = hp->value.cpval;
6641 /* Didn't find it; cons up a new one. */
6642 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6643 hp->next = *hash_bucket;
6646 hp->length = fname_length;
6647 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6648 bcopy (fname, hp->value.cpval, fname_length);
6651 error ("invalid format `#line' directive");
6655 ip->lineno = new_lineno;
6656 output_line_directive (ip, op, 0, file_change);
6657 check_expand (op, ip->length - (ip->bufp - ip->buf));
6661 /* Remove the definition of a symbol from the symbol table.
6662 according to un*x /lib/cpp, it is not an error to undef
6663 something that has no definitions, so it isn't one here either. */
6666 do_undef (buf, limit, op, keyword)
6667 U_CHAR *buf, *limit;
6669 struct directive *keyword;
6673 U_CHAR *orig_buf = buf;
6675 /* If this is a precompiler run (with -pcp) pass thru #undef directives. */
6676 if (pcp_outfile && op)
6677 pass_thru_directive (buf, limit, op, keyword);
6679 SKIP_WHITE_SPACE (buf);
6680 sym_length = check_macro_name (buf, "macro");
6682 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6683 /* If we are generating additional info for debugging (with -g) we
6684 need to pass through all effective #undef directives. */
6685 if (debug_output && op)
6686 pass_thru_directive (orig_buf, limit, op, keyword);
6687 if (hp->type != T_MACRO)
6688 warning ("undefining `%s'", hp->name);
6694 SKIP_WHITE_SPACE (buf);
6696 pedwarn ("garbage after `#undef' directive");
6701 /* Report an error detected by the program we are processing.
6702 Use the text of the line in the error message.
6703 (We use error because it prints the filename & line#.) */
6706 do_error (buf, limit, op, keyword)
6707 U_CHAR *buf, *limit;
6709 struct directive *keyword;
6711 int length = limit - buf;
6712 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6713 bcopy ((char *) buf, (char *) copy, length);
6715 SKIP_WHITE_SPACE (copy);
6716 error ("#error %s", copy);
6720 /* Report a warning detected by the program we are processing.
6721 Use the text of the line in the warning message, then continue.
6722 (We use error because it prints the filename & line#.) */
6725 do_warning (buf, limit, op, keyword)
6726 U_CHAR *buf, *limit;
6728 struct directive *keyword;
6730 int length = limit - buf;
6731 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6732 bcopy ((char *) buf, (char *) copy, length);
6734 SKIP_WHITE_SPACE (copy);
6735 warning ("#warning %s", copy);
6739 /* Remember the name of the current file being read from so that we can
6740 avoid ever including it again. */
6747 for (i = indepth; i >= 0; i--)
6748 if (instack[i].inc) {
6749 record_control_macro (instack[i].inc, (U_CHAR *) "");
6754 /* #ident has already been copied to the output file, so just ignore it. */
6757 do_ident (buf, limit, op, keyword)
6758 U_CHAR *buf, *limit;
6760 struct directive *keyword;
6765 /* Allow #ident in system headers, since that's not user's fault. */
6766 if (pedantic && !instack[indepth].system_header_p)
6767 pedwarn ("ANSI C does not allow `#ident'");
6769 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6770 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6771 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6772 limit = buf + (trybuf.bufp - trybuf.buf);
6773 len = (limit - buf);
6776 /* Output directive name. */
6777 check_expand (op, 7);
6778 bcopy ("#ident ", (char *) op->bufp, 7);
6781 /* Output the expanded argument line. */
6782 check_expand (op, len);
6783 bcopy ((char *) buf, (char *) op->bufp, len);
6789 /* #pragma and its argument line have already been copied to the output file.
6790 Just check for some recognized pragmas that need validation here. */
6793 do_pragma (buf, limit, op, keyword)
6794 U_CHAR *buf, *limit;
6796 struct directive *keyword;
6798 SKIP_WHITE_SPACE (buf);
6799 if (!strncmp ((char *) buf, "once", 4)) {
6800 /* Allow #pragma once in system headers, since that's not the user's
6802 if (!instack[indepth].system_header_p)
6803 warning ("`#pragma once' is obsolete");
6807 if (!strncmp ((char *) buf, "implementation", 14)) {
6808 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6809 been included yet. */
6812 U_CHAR *p = buf + 14, *fname;
6813 SKIP_WHITE_SPACE (p);
6814 if (*p == '\n' || *p != '\"')
6818 if ((p = (U_CHAR *) index ((char *) fname, '\"')))
6821 for (h = 0; h < INCLUDE_HASHSIZE; h++) {
6822 struct include_file *inc;
6823 for (inc = include_hashtab[h]; inc; inc = inc->next) {
6824 if (!strcmp (base_name (inc->fname), (char *) fname)) {
6825 warning ("`#pragma implementation' for \"%s\" appears after its #include",fname);
6835 /* This was a fun hack, but #pragma seems to start to be useful.
6836 By failing to recognize it, we pass it through unchanged to cc1. */
6838 /* The behavior of the #pragma directive is implementation defined.
6839 this implementation defines it as follows. */
6845 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6848 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6850 execl ("/usr/games/hack", "#pragma", 0);
6851 execl ("/usr/games/rogue", "#pragma", 0);
6852 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6853 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6855 fatal ("You are in a maze of twisty compiler features, all different");
6859 #ifdef SCCS_DIRECTIVE
6861 /* Just ignore #sccs, on systems where we define it at all. */
6864 do_sccs (buf, limit, op, keyword)
6865 U_CHAR *buf, *limit;
6867 struct directive *keyword;
6870 pedwarn ("ANSI C does not allow `#sccs'");
6874 #endif /* defined (SCCS_DIRECTIVE) */
6876 /* Handle #if directive by
6877 1) inserting special `defined' keyword into the hash table
6878 that gets turned into 0 or 1 by special_symbol (thus,
6879 if the luser has a symbol called `defined' already, it won't
6880 work inside the #if directive)
6881 2) rescan the input into a temporary output buffer
6882 3) pass the output buffer to the yacc parser and collect a value
6883 4) clean up the mess left from steps 1 and 2.
6884 5) call conditional_skip to skip til the next #endif (etc.),
6885 or not, depending on the value from step 3. */
6888 do_if (buf, limit, op, keyword)
6889 U_CHAR *buf, *limit;
6891 struct directive *keyword;
6893 HOST_WIDE_INT value;
6894 FILE_BUF *ip = &instack[indepth];
6896 value = eval_if_expression (buf, limit - buf);
6897 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
6901 /* Handle a #elif directive by not changing if_stack either.
6902 see the comment above do_else. */
6905 do_elif (buf, limit, op, keyword)
6906 U_CHAR *buf, *limit;
6908 struct directive *keyword;
6910 HOST_WIDE_INT value;
6911 FILE_BUF *ip = &instack[indepth];
6913 if (if_stack == instack[indepth].if_stack) {
6914 error ("`#elif' not within a conditional");
6917 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
6918 error ("`#elif' after `#else'");
6919 fprintf (stderr, " (matches line %d", if_stack->lineno);
6920 if (if_stack->fname != NULL && ip->fname != NULL &&
6921 strcmp (if_stack->fname, ip->nominal_fname) != 0)
6922 fprintf (stderr, ", file %s", if_stack->fname);
6923 fprintf (stderr, ")\n");
6925 if_stack->type = T_ELIF;
6928 if (if_stack->if_succeeded)
6929 skip_if_group (ip, 0, op);
6931 value = eval_if_expression (buf, limit - buf);
6933 skip_if_group (ip, 0, op);
6935 ++if_stack->if_succeeded; /* continue processing input */
6936 output_line_directive (ip, op, 1, same_file);
6942 /* Evaluate a #if expression in BUF, of length LENGTH, then parse the
6943 result as a C expression and return the value as an int. */
6945 static HOST_WIDE_INT
6946 eval_if_expression (buf, length)
6951 HASHNODE *save_defined;
6952 HOST_WIDE_INT value;
6954 save_defined = install ((U_CHAR *) "defined", -1, T_SPEC_DEFINED,
6957 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
6959 delete_macro (save_defined); /* clean up special symbol */
6961 temp_obuf.buf[temp_obuf.length] = '\n';
6962 value = parse_c_expression ((char *) temp_obuf.buf);
6964 free (temp_obuf.buf);
6969 /* routine to handle ifdef/ifndef. Try to look up the symbol, then do
6970 or don't skip to the #endif/#else/#elif depending on what directive
6971 is actually being processed. */
6974 do_xifdef (buf, limit, op, keyword)
6975 U_CHAR *buf, *limit;
6977 struct directive *keyword;
6980 FILE_BUF *ip = &instack[indepth];
6982 int start_of_file = 0;
6983 U_CHAR *control_macro = 0;
6985 /* Detect a #ifndef at start of file (not counting comments). */
6986 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
6987 U_CHAR *p = ip->buf;
6988 while (p != directive_start) {
6992 /* Make no special provision for backslash-newline here; this is
6993 slower if backslash-newlines are present, but it's correct,
6994 and it's not worth it to tune for the rare backslash-newline. */
6996 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
6997 /* Skip this comment. */
6999 U_CHAR *save_bufp = ip->bufp;
7001 p = skip_to_end_of_comment (ip, &junk, 1);
7002 ip->bufp = save_bufp;
7007 /* If we get here, this conditional is the beginning of the file. */
7012 /* Discard leading and trailing whitespace. */
7013 SKIP_WHITE_SPACE (buf);
7014 while (limit != buf && is_hor_space[limit[-1]]) limit--;
7016 /* Find the end of the identifier at the beginning. */
7017 for (end = buf; is_idchar[*end]; end++);
7020 skip = (keyword->type == T_IFDEF);
7022 pedwarn (end == limit ? "`#%s' with no argument"
7023 : "`#%s' argument starts with punctuation",
7028 if (! traditional) {
7029 if (isdigit (buf[0]))
7030 pedwarn ("`#%s' argument starts with a digit", keyword->name);
7031 else if (end != limit)
7032 pedwarn ("garbage at end of `#%s' argument", keyword->name);
7035 hp = lookup (buf, end-buf, -1);
7038 /* Output a precondition for this macro. */
7040 (hp->type == T_CONST
7041 || (hp->type == T_MACRO && hp->value.defn->predefined)))
7042 fprintf (pcp_outfile, "#define %s\n", hp->name);
7045 fprintf (pcp_outfile, "#undef ");
7046 while (is_idchar[*cp]) /* Ick! */
7047 fputc (*cp++, pcp_outfile);
7048 putc ('\n', pcp_outfile);
7052 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
7053 if (start_of_file && !skip) {
7054 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
7055 bcopy ((char *) buf, (char *) control_macro, end - buf);
7056 control_macro[end - buf] = 0;
7060 conditional_skip (ip, skip, T_IF, control_macro, op);
7064 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
7065 If this is a #ifndef starting at the beginning of a file,
7066 CONTROL_MACRO is the macro name tested by the #ifndef.
7067 Otherwise, CONTROL_MACRO is 0. */
7070 conditional_skip (ip, skip, type, control_macro, op)
7073 enum node_type type;
7074 U_CHAR *control_macro;
7077 IF_STACK_FRAME *temp;
7079 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7080 temp->fname = ip->nominal_fname;
7081 temp->lineno = ip->lineno;
7082 temp->next = if_stack;
7083 temp->control_macro = control_macro;
7086 if_stack->type = type;
7089 skip_if_group (ip, 0, op);
7092 ++if_stack->if_succeeded;
7093 output_line_directive (ip, &outbuf, 1, same_file);
7097 /* Skip to #endif, #else, or #elif. adjust line numbers, etc.
7098 Leaves input ptr at the sharp sign found.
7099 If ANY is nonzero, return at next directive of any sort. */
7102 skip_if_group (ip, any, op)
7107 register U_CHAR *bp = ip->bufp, *cp;
7108 register U_CHAR *endb = ip->buf + ip->length;
7109 struct directive *kt;
7110 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
7111 U_CHAR *beg_of_line = bp;
7112 register int ident_length;
7113 U_CHAR *ident, *after_ident;
7114 /* Save info about where the group starts. */
7115 U_CHAR *beg_of_group = bp;
7116 int beg_lineno = ip->lineno;
7118 if (output_conditionals && op != 0) {
7119 char *ptr = "#failed\n";
7120 int len = strlen (ptr);
7122 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7127 check_expand (op, len);
7128 bcopy (ptr, (char *) op->bufp, len);
7131 output_line_directive (ip, op, 1, 0);
7136 case '/': /* possible comment */
7137 if (*bp == '\\' && bp[1] == '\n')
7140 || (cplusplus_comments && *bp == '/')) {
7142 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
7147 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
7148 NULL_PTR, NULL_PTR);
7151 /* Char after backslash loses its special meaning. */
7154 ++ip->lineno; /* But do update the line-count. */
7163 if (beg_of_line == 0 || traditional)
7166 while (bp[0] == '\\' && bp[1] == '\n')
7172 /* # keyword: a # must be first nonblank char on the line */
7173 if (beg_of_line == 0)
7177 /* Scan from start of line, skipping whitespace, comments
7178 and backslash-newlines, and see if we reach this #.
7179 If not, this # is not special. */
7181 /* If -traditional, require # to be at beginning of line. */
7184 if (is_hor_space[*bp])
7186 else if (*bp == '\\' && bp[1] == '\n')
7188 else if (*bp == '/' && bp[1] == '*') {
7190 while (!(*bp == '*' && bp[1] == '/'))
7194 /* There is no point in trying to deal with C++ // comments here,
7195 because if there is one, then this # must be part of the
7196 comment and we would never reach here. */
7200 if (bp != ip->bufp) {
7201 bp = ip->bufp + 1; /* Reset bp to after the #. */
7205 bp = ip->bufp + 1; /* Point after the '#' */
7206 if (ip->bufp[0] == '%') {
7207 /* Skip past the ':' again. */
7208 while (*bp == '\\') {
7215 /* Skip whitespace and \-newline. */
7217 if (is_hor_space[*bp])
7219 else if (*bp == '\\' && bp[1] == '\n')
7221 else if (*bp == '/') {
7223 for (bp += 2; ; bp++) {
7226 else if (*bp == '*') {
7227 if (bp[-1] == '/' && warn_comments)
7228 warning ("`/*' within comment");
7234 } else if (bp[1] == '/' && cplusplus_comments) {
7235 for (bp += 2; ; bp++) {
7240 warning ("multiline `//' comment");
7252 /* Now find end of directive name.
7253 If we encounter a backslash-newline, exchange it with any following
7254 symbol-constituents so that we end up with a contiguous name. */
7260 if (*bp == '\\' && bp[1] == '\n')
7261 name_newline_fix (bp);
7267 ident_length = bp - cp;
7271 /* A line of just `#' becomes blank. */
7273 if (ident_length == 0 && *after_ident == '\n') {
7277 if (ident_length == 0 || !is_idstart[*ident]) {
7279 while (is_idchar[*p]) {
7280 if (*p < '0' || *p > '9')
7284 /* Handle # followed by a line number. */
7285 if (p != ident && !is_idchar[*p]) {
7287 pedwarn ("`#' followed by integer");
7291 /* Avoid error for `###' and similar cases unless -pedantic. */
7293 while (*p == '#' || is_hor_space[*p]) p++;
7295 if (pedantic && !lang_asm)
7296 pedwarn ("invalid preprocessing directive");
7301 if (!lang_asm && pedantic)
7302 pedwarn ("invalid preprocessing directive name");
7306 for (kt = directive_table; kt->length >= 0; kt++) {
7307 IF_STACK_FRAME *temp;
7308 if (ident_length == kt->length
7309 && bcmp (cp, kt->name, kt->length) == 0) {
7310 /* If we are asked to return on next directive, do so now. */
7318 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7319 temp->next = if_stack;
7321 temp->lineno = ip->lineno;
7322 temp->fname = ip->nominal_fname;
7323 temp->type = kt->type;
7327 if (pedantic && if_stack != save_if_stack)
7328 validate_else (bp, endb);
7330 if (if_stack == instack[indepth].if_stack) {
7331 error ("`#%s' not within a conditional", kt->name);
7334 else if (if_stack == save_if_stack)
7335 goto done; /* found what we came for */
7337 if (kt->type != T_ENDIF) {
7338 if (if_stack->type == T_ELSE)
7339 error ("`#else' or `#elif' after `#else'");
7340 if_stack->type = kt->type;
7345 if_stack = if_stack->next;
7355 /* Don't let erroneous code go by. */
7356 if (kt->length < 0 && !lang_asm && pedantic)
7357 pedwarn ("invalid preprocessing directive name");
7362 /* after this returns, rescan will exit because ip->bufp
7363 now points to the end of the buffer.
7364 rescan is responsible for the error message also. */
7367 if (output_conditionals && op != 0) {
7368 char *ptr = "#endfailed\n";
7369 int len = strlen (ptr);
7371 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7376 check_expand (op, beg_of_line - beg_of_group);
7377 bcopy ((char *) beg_of_group, (char *) op->bufp,
7378 beg_of_line - beg_of_group);
7379 op->bufp += beg_of_line - beg_of_group;
7380 op->lineno += ip->lineno - beg_lineno;
7381 check_expand (op, len);
7382 bcopy (ptr, (char *) op->bufp, len);
7388 /* Handle a #else directive. Do this by just continuing processing
7389 without changing if_stack ; this is so that the error message
7390 for missing #endif's etc. will point to the original #if. It
7391 is possible that something different would be better. */
7394 do_else (buf, limit, op, keyword)
7395 U_CHAR *buf, *limit;
7397 struct directive *keyword;
7399 FILE_BUF *ip = &instack[indepth];
7402 SKIP_WHITE_SPACE (buf);
7404 pedwarn ("text following `#else' violates ANSI standard");
7407 if (if_stack == instack[indepth].if_stack) {
7408 error ("`#else' not within a conditional");
7411 /* #ifndef can't have its special treatment for containing the whole file
7412 if it has a #else clause. */
7413 if_stack->control_macro = 0;
7415 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7416 error ("`#else' after `#else'");
7417 fprintf (stderr, " (matches line %d", if_stack->lineno);
7418 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7419 fprintf (stderr, ", file %s", if_stack->fname);
7420 fprintf (stderr, ")\n");
7422 if_stack->type = T_ELSE;
7425 if (if_stack->if_succeeded)
7426 skip_if_group (ip, 0, op);
7428 ++if_stack->if_succeeded; /* continue processing input */
7429 output_line_directive (ip, op, 1, same_file);
7434 /* Unstack after #endif directive. */
7437 do_endif (buf, limit, op, keyword)
7438 U_CHAR *buf, *limit;
7440 struct directive *keyword;
7443 SKIP_WHITE_SPACE (buf);
7445 pedwarn ("text following `#endif' violates ANSI standard");
7448 if (if_stack == instack[indepth].if_stack)
7449 error ("unbalanced `#endif'");
7451 IF_STACK_FRAME *temp = if_stack;
7452 if_stack = if_stack->next;
7453 if (temp->control_macro != 0) {
7454 /* This #endif matched a #ifndef at the start of the file.
7455 See if it is at the end of the file. */
7456 FILE_BUF *ip = &instack[indepth];
7457 U_CHAR *p = ip->bufp;
7458 U_CHAR *ep = ip->buf + ip->length;
7464 && (*p == '*' || (cplusplus_comments && *p == '/'))) {
7465 /* Skip this comment. */
7467 U_CHAR *save_bufp = ip->bufp;
7469 p = skip_to_end_of_comment (ip, &junk, 1);
7470 ip->bufp = save_bufp;
7475 /* If we get here, this #endif ends a #ifndef
7476 that contains all of the file (aside from whitespace).
7477 Arrange not to include the file again
7478 if the macro that was tested is defined.
7480 Do not do this for the top-level file in a -include or any
7481 file in a -imacros. */
7483 && ! (indepth == 1 && no_record_file)
7484 && ! (no_record_file && no_output))
7485 record_control_macro (ip->inc, temp->control_macro);
7489 output_line_directive (&instack[indepth], op, 1, same_file);
7494 /* When an #else or #endif is found while skipping failed conditional,
7495 if -pedantic was specified, this is called to warn about text after
7496 the directive name. P points to the first char after the directive
7500 validate_else (p, limit)
7502 register U_CHAR *limit;
7504 /* Advance P over whitespace and comments. */
7506 while (*p == '\\' && p[1] == '\n')
7508 if (is_hor_space[*p])
7510 else if (*p == '/') {
7511 while (p[1] == '\\' && p[2] == '\n')
7514 /* Don't bother warning about unterminated comments
7515 since that will happen later. Just be sure to exit. */
7516 for (p += 2; ; p++) {
7520 while (p[1] == '\\' && p[2] == '\n')
7529 else if (cplusplus_comments && p[1] == '/')
7535 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7538 /* Skip a comment, assuming the input ptr immediately follows the
7539 initial slash-star. Bump *LINE_COUNTER for each newline.
7540 (The canonical line counter is &ip->lineno.)
7541 Don't use this routine (or the next one) if bumping the line
7542 counter is not sufficient to deal with newlines in the string.
7544 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7545 This feature is useful when processing a comment that is going to
7546 be processed or was processed at another point in the preprocessor,
7547 to avoid a duplicate warning. Likewise for unterminated comment
7551 skip_to_end_of_comment (ip, line_counter, nowarn)
7552 register FILE_BUF *ip;
7553 int *line_counter; /* place to remember newlines, or NULL */
7556 register U_CHAR *limit = ip->buf + ip->length;
7557 register U_CHAR *bp = ip->bufp;
7558 FILE_BUF *op = put_out_comments && !line_counter ? &outbuf : (FILE_BUF *) 0;
7559 int start_line = line_counter ? *line_counter : 0;
7561 /* JF this line_counter stuff is a crock to make sure the
7562 comment is only put out once, no matter how many times
7563 the comment is skipped. It almost works */
7566 *op->bufp++ = bp[-1];
7568 if (cplusplus_comments && bp[-1] == '/') {
7569 for (; bp < limit; bp++) {
7573 if (!nowarn && warn_comments)
7574 warning ("multiline `//' comment");
7586 while (bp < limit) {
7591 /* If this is the end of the file, we have an unterminated comment.
7592 Don't swallow the newline. We are guaranteed that there will be a
7593 trailing newline and various pieces assume it's there. */
7600 if (line_counter != NULL)
7606 if (bp[-2] == '/' && !nowarn && warn_comments)
7607 warning ("`/*' within comment");
7608 if (*bp == '\\' && bp[1] == '\n')
7621 error_with_line (line_for_error (start_line), "unterminated comment");
7626 /* Skip over a quoted string. BP points to the opening quote.
7627 Returns a pointer after the closing quote. Don't go past LIMIT.
7628 START_LINE is the line number of the starting point (but it need
7629 not be valid if the starting point is inside a macro expansion).
7631 The input stack state is not changed.
7633 If COUNT_NEWLINES is nonzero, it points to an int to increment
7634 for each newline passed.
7636 If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7637 if we pass a backslash-newline.
7639 If EOFP is nonzero, set *EOFP to 1 if the string is unterminated. */
7642 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7643 register U_CHAR *bp;
7644 register U_CHAR *limit;
7646 int *count_newlines;
7647 int *backslash_newlines_p;
7650 register U_CHAR c, match;
7655 error_with_line (line_for_error (start_line),
7656 "unterminated string or character constant");
7657 error_with_line (multiline_string_line,
7658 "possible real start of unterminated constant");
7659 multiline_string_line = 0;
7666 while (*bp == '\\' && bp[1] == '\n') {
7667 if (backslash_newlines_p)
7668 *backslash_newlines_p = 1;
7673 if (*bp == '\n' && count_newlines) {
7674 if (backslash_newlines_p)
7675 *backslash_newlines_p = 1;
7679 } else if (c == '\n') {
7681 /* Unterminated strings and character constants are 'valid'. */
7682 bp--; /* Don't consume the newline. */
7687 if (match == '\'') {
7688 error_with_line (line_for_error (start_line),
7689 "unterminated string or character constant");
7695 /* If not traditional, then allow newlines inside strings. */
7698 if (multiline_string_line == 0) {
7700 pedwarn_with_line (line_for_error (start_line),
7701 "string constant runs past end of line");
7702 multiline_string_line = start_line;
7704 } else if (c == match)
7710 /* Place into DST a quoted string representing the string SRC.
7711 Return the address of DST's terminating null. */
7714 quote_string (dst, src)
7721 switch ((c = *src++))
7728 sprintf (dst, "\\%03o", c);
7746 /* Skip across a group of balanced parens, starting from IP->bufp.
7747 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7749 This does not handle newlines, because it's used for the arg of #if,
7750 where there aren't any newlines. Also, backslash-newline can't appear. */
7753 skip_paren_group (ip)
7754 register FILE_BUF *ip;
7756 U_CHAR *limit = ip->buf + ip->length;
7757 U_CHAR *p = ip->bufp;
7759 int lines_dummy = 0;
7761 while (p != limit) {
7771 return ip->bufp = p;
7777 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7785 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7787 return ip->bufp = p;
7797 /* Write out a #line directive, for instance, after an #include file.
7798 If CONDITIONAL is nonzero, we can omit the #line if it would
7799 appear to be a no-op, and we can output a few newlines instead
7800 if we want to increase the line number by a small amount.
7801 FILE_CHANGE says whether we are entering a file, leaving, or neither. */
7804 output_line_directive (ip, op, conditional, file_change)
7807 enum file_change_code file_change;
7810 char *line_directive_buf, *line_end;
7812 if (no_line_directives
7813 || ip->fname == NULL
7815 op->lineno = ip->lineno;
7820 if (ip->lineno == op->lineno)
7823 /* If the inherited line number is a little too small,
7824 output some newlines instead of a #line directive. */
7825 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7826 check_expand (op, 10);
7827 while (ip->lineno > op->lineno) {
7835 /* Don't output a line number of 0 if we can help it. */
7836 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7837 && *ip->bufp == '\n') {
7842 line_directive_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7843 sprintf (line_directive_buf, "# %d ", ip->lineno);
7844 line_end = quote_string (line_directive_buf + strlen (line_directive_buf),
7846 if (file_change != same_file) {
7848 *line_end++ = file_change == enter_file ? '1' : '2';
7850 /* Tell cc1 if following text comes from a system header file. */
7851 if (ip->system_header_p) {
7855 #ifndef NO_IMPLICIT_EXTERN_C
7856 /* Tell cc1plus if following text should be treated as C. */
7857 if (ip->system_header_p == 2 && cplusplus) {
7863 len = line_end - line_directive_buf;
7864 check_expand (op, len + 1);
7865 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7867 bcopy ((char *) line_directive_buf, (char *) op->bufp, len);
7869 op->lineno = ip->lineno;
7872 /* This structure represents one parsed argument in a macro call.
7873 `raw' points to the argument text as written (`raw_length' is its length).
7874 `expanded' points to the argument's macro-expansion
7875 (its length is `expand_length').
7876 `stringified_length' is the length the argument would have
7878 `use_count' is the number of times this macro arg is substituted
7879 into the macro. If the actual use count exceeds 10,
7880 the value stored is 10.
7881 `free1' and `free2', if nonzero, point to blocks to be freed
7882 when the macro argument data is no longer needed. */
7885 U_CHAR *raw, *expanded;
7886 int raw_length, expand_length;
7887 int stringified_length;
7888 U_CHAR *free1, *free2;
7893 /* Expand a macro call.
7894 HP points to the symbol that is the macro being called.
7895 Put the result of expansion onto the input stack
7896 so that subsequent input by our caller will use it.
7898 If macro wants arguments, caller has already verified that
7899 an argument list follows; arguments come from the input stack. */
7902 macroexpand (hp, op)
7907 DEFINITION *defn = hp->value.defn;
7908 register U_CHAR *xbuf;
7910 int start_line = instack[indepth].lineno;
7911 int rest_args, rest_zero;
7913 CHECK_DEPTH (return;);
7915 /* it might not actually be a macro. */
7916 if (hp->type != T_MACRO) {
7917 special_symbol (hp, op);
7921 /* This macro is being used inside a #if, which means it must be */
7922 /* recorded as a precondition. */
7923 if (pcp_inside_if && pcp_outfile && defn->predefined)
7924 dump_single_macro (hp, pcp_outfile);
7926 nargs = defn->nargs;
7930 struct argdata *args;
7931 char *parse_error = 0;
7933 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
7935 for (i = 0; i < nargs; i++) {
7936 args[i].raw = (U_CHAR *) "";
7937 args[i].expanded = 0;
7938 args[i].raw_length = args[i].expand_length
7939 = args[i].stringified_length = 0;
7940 args[i].free1 = args[i].free2 = 0;
7941 args[i].use_count = 0;
7944 /* Parse all the macro args that are supplied. I counts them.
7945 The first NARGS args are stored in ARGS.
7946 The rest are discarded.
7947 If rest_args is set then we assume macarg absorbed the rest of the args.
7952 /* Discard the open-parenthesis or comma before the next arg. */
7953 ++instack[indepth].bufp;
7956 if (i < nargs || (nargs == 0 && i == 0)) {
7957 /* If we are working on last arg which absorbs rest of args... */
7958 if (i == nargs - 1 && defn->rest_args)
7960 parse_error = macarg (&args[i], rest_args);
7963 parse_error = macarg (NULL_PTR, 0);
7965 error_with_line (line_for_error (start_line), parse_error);
7969 } while (*instack[indepth].bufp != ')');
7971 /* If we got one arg but it was just whitespace, call that 0 args. */
7973 register U_CHAR *bp = args[0].raw;
7974 register U_CHAR *lim = bp + args[0].raw_length;
7975 /* cpp.texi says for foo ( ) we provide one argument.
7976 However, if foo wants just 0 arguments, treat this as 0. */
7978 while (bp != lim && is_space[*bp]) bp++;
7983 /* Don't output an error message if we have already output one for
7984 a parse error above. */
7986 if (nargs == 0 && i > 0) {
7988 error ("arguments given to macro `%s'", hp->name);
7989 } else if (i < nargs) {
7990 /* traditional C allows foo() if foo wants one argument. */
7991 if (nargs == 1 && i == 0 && traditional)
7993 /* the rest args token is allowed to absorb 0 tokens */
7994 else if (i == nargs - 1 && defn->rest_args)
7996 else if (parse_error)
7999 error ("macro `%s' used without args", hp->name);
8001 error ("macro `%s' used with just one arg", hp->name);
8003 error ("macro `%s' used with only %d args", hp->name, i);
8004 } else if (i > nargs) {
8006 error ("macro `%s' used with too many (%d) args", hp->name, i);
8009 /* Swallow the closeparen. */
8010 ++instack[indepth].bufp;
8012 /* If macro wants zero args, we parsed the arglist for checking only.
8013 Read directly from the macro definition. */
8015 xbuf = defn->expansion;
8016 xbuf_len = defn->length;
8018 register U_CHAR *exp = defn->expansion;
8019 register int offset; /* offset in expansion,
8020 copied a piece at a time */
8021 register int totlen; /* total amount of exp buffer filled so far */
8023 register struct reflist *ap, *last_ap;
8025 /* Macro really takes args. Compute the expansion of this call. */
8027 /* Compute length in characters of the macro's expansion.
8028 Also count number of times each arg is used. */
8029 xbuf_len = defn->length;
8030 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
8032 xbuf_len += args[ap->argno].stringified_length;
8033 else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional)
8034 /* Add 4 for two newline-space markers to prevent
8035 token concatenation. */
8036 xbuf_len += args[ap->argno].raw_length + 4;
8038 /* We have an ordinary (expanded) occurrence of the arg.
8039 So compute its expansion, if we have not already. */
8040 if (args[ap->argno].expanded == 0) {
8042 obuf = expand_to_temp_buffer (args[ap->argno].raw,
8043 args[ap->argno].raw + args[ap->argno].raw_length,
8046 args[ap->argno].expanded = obuf.buf;
8047 args[ap->argno].expand_length = obuf.length;
8048 args[ap->argno].free2 = obuf.buf;
8051 /* Add 4 for two newline-space markers to prevent
8052 token concatenation. */
8053 xbuf_len += args[ap->argno].expand_length + 4;
8055 if (args[ap->argno].use_count < 10)
8056 args[ap->argno].use_count++;
8059 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
8061 /* Generate in XBUF the complete expansion
8062 with arguments substituted in.
8063 TOTLEN is the total size generated so far.
8064 OFFSET is the index in the definition
8065 of where we are copying from. */
8066 offset = totlen = 0;
8067 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
8068 last_ap = ap, ap = ap->next) {
8069 register struct argdata *arg = &args[ap->argno];
8070 int count_before = totlen;
8072 /* Add chars to XBUF. */
8073 for (i = 0; i < ap->nchars; i++, offset++)
8074 xbuf[totlen++] = exp[offset];
8076 /* If followed by an empty rest arg with concatenation,
8077 delete the last run of nonwhite chars. */
8078 if (rest_zero && totlen > count_before
8079 && ((ap->rest_args && ap->raw_before != 0)
8080 || (last_ap != NULL && last_ap->rest_args
8081 && last_ap->raw_after != 0))) {
8082 /* Delete final whitespace. */
8083 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
8087 /* Delete the nonwhites before them. */
8088 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
8093 if (ap->stringify != 0) {
8094 int arglen = arg->raw_length;
8100 && (c = arg->raw[i], is_space[c]))
8103 && (c = arg->raw[arglen - 1], is_space[c]))
8106 xbuf[totlen++] = '\"'; /* insert beginning quote */
8107 for (; i < arglen; i++) {
8110 /* Special markers Newline Space
8111 generate nothing for a stringified argument. */
8112 if (c == '\n' && arg->raw[i+1] != '\n') {
8117 /* Internal sequences of whitespace are replaced by one space
8118 except within an string or char token. */
8120 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
8122 /* Note that Newline Space does occur within whitespace
8123 sequences; consider it part of the sequence. */
8124 if (c == '\n' && is_space[arg->raw[i+1]])
8126 else if (c != '\n' && is_space[c])
8143 } else if (c == '\"' || c == '\'')
8147 /* Escape these chars */
8148 if (c == '\"' || (in_string && c == '\\'))
8149 xbuf[totlen++] = '\\';
8153 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
8158 xbuf[totlen++] = '\"'; /* insert ending quote */
8159 } else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) {
8160 U_CHAR *p1 = arg->raw;
8161 U_CHAR *l1 = p1 + arg->raw_length;
8162 if (ap->raw_before != 0) {
8163 while (p1 != l1 && is_space[*p1]) p1++;
8164 while (p1 != l1 && is_idchar[*p1])
8165 xbuf[totlen++] = *p1++;
8166 /* Delete any no-reexpansion marker that follows
8167 an identifier at the beginning of the argument
8168 if the argument is concatenated with what precedes it. */
8169 if (p1[0] == '\n' && p1[1] == '-')
8171 } else if (!traditional) {
8172 /* Ordinary expanded use of the argument.
8173 Put in newline-space markers to prevent token pasting. */
8174 xbuf[totlen++] = '\n';
8175 xbuf[totlen++] = ' ';
8177 if (ap->raw_after != 0) {
8178 /* Arg is concatenated after: delete trailing whitespace,
8179 whitespace markers, and no-reexpansion markers. */
8181 if (is_space[l1[-1]]) l1--;
8182 else if (l1[-1] == '-') {
8183 U_CHAR *p2 = l1 - 1;
8184 /* If a `-' is preceded by an odd number of newlines then it
8185 and the last newline are a no-reexpansion marker. */
8186 while (p2 != p1 && p2[-1] == '\n') p2--;
8187 if ((l1 - 1 - p2) & 1) {
8196 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8198 if (!traditional && ap->raw_after == 0) {
8199 /* Ordinary expanded use of the argument.
8200 Put in newline-space markers to prevent token pasting. */
8201 xbuf[totlen++] = '\n';
8202 xbuf[totlen++] = ' ';
8205 /* Ordinary expanded use of the argument.
8206 Put in newline-space markers to prevent token pasting. */
8208 xbuf[totlen++] = '\n';
8209 xbuf[totlen++] = ' ';
8211 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8212 arg->expand_length);
8213 totlen += arg->expand_length;
8215 xbuf[totlen++] = '\n';
8216 xbuf[totlen++] = ' ';
8218 /* If a macro argument with newlines is used multiple times,
8219 then only expand the newlines once. This avoids creating output
8220 lines which don't correspond to any input line, which confuses
8222 if (arg->use_count > 1 && arg->newlines > 0) {
8223 /* Don't bother doing change_newlines for subsequent
8227 = change_newlines (arg->expanded, arg->expand_length);
8231 if (totlen > xbuf_len)
8235 /* If there is anything left of the definition after handling
8236 the arg list, copy that in too. */
8238 for (i = offset; i < defn->length; i++) {
8239 /* if we've reached the end of the macro */
8242 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8243 && last_ap->raw_after != 0))
8244 xbuf[totlen++] = exp[i];
8250 for (i = 0; i < nargs; i++) {
8251 if (args[i].free1 != 0)
8252 free (args[i].free1);
8253 if (args[i].free2 != 0)
8254 free (args[i].free2);
8258 xbuf = defn->expansion;
8259 xbuf_len = defn->length;
8262 /* Now put the expansion on the input stack
8263 so our caller will commence reading from it. */
8265 register FILE_BUF *ip2;
8267 ip2 = &instack[++indepth];
8270 ip2->nominal_fname = 0;
8272 /* This may not be exactly correct, but will give much better error
8273 messages for nested macro calls than using a line number of zero. */
8274 ip2->lineno = start_line;
8276 ip2->length = xbuf_len;
8278 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8280 ip2->if_stack = if_stack;
8281 ip2->system_header_p = 0;
8283 /* Recursive macro use sometimes works traditionally.
8284 #define foo(x,y) bar (x (y,0), y)
8288 hp->type = T_DISABLED;
8292 /* Parse a macro argument and store the info on it into *ARGPTR.
8293 REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8294 Return nonzero to indicate a syntax error. */
8297 macarg (argptr, rest_args)
8298 register struct argdata *argptr;
8301 FILE_BUF *ip = &instack[indepth];
8307 /* Try to parse as much of the argument as exists at this
8308 input stack level. */
8309 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8310 &paren, &newlines, &comments, rest_args);
8312 /* If we find the end of the argument at this level,
8313 set up *ARGPTR to point at it in the input stack. */
8314 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8315 && bp != ip->buf + ip->length) {
8317 argptr->raw = ip->bufp;
8318 argptr->raw_length = bp - ip->bufp;
8319 argptr->newlines = newlines;
8323 /* This input stack level ends before the macro argument does.
8324 We must pop levels and keep parsing.
8325 Therefore, we must allocate a temporary buffer and copy
8326 the macro argument into it. */
8327 int bufsize = bp - ip->bufp;
8328 int extra = newlines;
8329 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8330 int final_start = 0;
8332 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8334 ip->lineno += newlines;
8336 while (bp == ip->buf + ip->length) {
8337 if (instack[indepth].macro == 0) {
8338 result = "unterminated macro call";
8341 ip->macro->type = T_MACRO;
8343 free (ip->free_ptr);
8344 ip = &instack[--indepth];
8347 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8348 &newlines, &comments, rest_args);
8349 final_start = bufsize;
8350 bufsize += bp - ip->bufp;
8352 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8353 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8356 ip->lineno += newlines;
8359 /* Now, if arg is actually wanted, record its raw form,
8360 discarding comments and duplicating newlines in whatever
8361 part of it did not come from a macro expansion.
8362 EXTRA space has been preallocated for duplicating the newlines.
8363 FINAL_START is the index of the start of that part. */
8365 argptr->raw = buffer;
8366 argptr->raw_length = bufsize;
8367 argptr->free1 = buffer;
8368 argptr->newlines = newlines;
8369 if ((newlines || comments) && ip->fname != 0)
8372 discard_comments (argptr->raw + final_start,
8373 argptr->raw_length - final_start,
8375 argptr->raw[argptr->raw_length] = 0;
8376 if (argptr->raw_length > bufsize + extra)
8381 /* If we are not discarding this argument,
8382 macroexpand it and compute its length as stringified.
8383 All this info goes into *ARGPTR. */
8386 register U_CHAR *buf, *lim;
8387 register int totlen;
8390 lim = buf + argptr->raw_length;
8392 while (buf != lim && is_space[*buf])
8394 while (buf != lim && is_space[lim[-1]])
8396 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8397 while (buf != lim) {
8398 register U_CHAR c = *buf++;
8400 /* Internal sequences of whitespace are replaced by one space
8401 in most cases, but not always. So count all the whitespace
8402 in case we need to keep it all. */
8405 SKIP_ALL_WHITE_SPACE (buf);
8408 if (c == '\"' || c == '\\') /* escape these chars */
8410 else if (!isprint (c))
8413 argptr->stringified_length = totlen;
8418 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8419 counting parens in *DEPTHPTR,
8420 and return if reach LIMIT
8421 or before a `)' that would make *DEPTHPTR negative
8422 or before a comma when *DEPTHPTR is zero.
8423 Single and double quotes are matched and termination
8424 is inhibited within them. Comments also inhibit it.
8425 Value returned is pointer to stopping place.
8427 Increment *NEWLINES each time a newline is passed.
8428 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8429 Set *COMMENTS to 1 if a comment is seen. */
8432 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8434 register U_CHAR *limit;
8435 int *depthptr, *newlines, *comments;
8438 register U_CHAR *bp = start;
8440 while (bp < limit) {
8446 if (--(*depthptr) < 0)
8450 /* Traditionally, backslash makes following char not special. */
8451 if (bp + 1 < limit && traditional)
8454 /* But count source lines anyway. */
8463 if (bp[1] == '\\' && bp[2] == '\n')
8464 newline_fix (bp + 1);
8467 for (bp += 2; bp < limit; bp++) {
8470 else if (*bp == '*') {
8471 if (bp[-1] == '/' && warn_comments)
8472 warning ("`/*' within comment");
8473 if (bp[1] == '\\' && bp[2] == '\n')
8474 newline_fix (bp + 1);
8481 } else if (bp[1] == '/' && cplusplus_comments) {
8483 for (bp += 2; bp < limit; bp++) {
8489 warning ("multiline `//' comment");
8498 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8503 while (*bp == '\\' && bp[1] == '\n') {
8506 } else if (*bp == '\n') {
8515 /* if we've returned to lowest level and we aren't absorbing all args */
8516 if ((*depthptr) == 0 && rest_args == 0)
8526 /* Discard comments and duplicate newlines
8527 in the string of length LENGTH at START,
8528 except inside of string constants.
8529 The string is copied into itself with its beginning staying fixed.
8531 NEWLINES is the number of newlines that must be duplicated.
8532 We assume that that much extra space is available past the end
8536 discard_comments (start, length, newlines)
8541 register U_CHAR *ibp;
8542 register U_CHAR *obp;
8543 register U_CHAR *limit;
8546 /* If we have newlines to duplicate, copy everything
8547 that many characters up. Then, in the second part,
8548 we will have room to insert the newlines
8550 NEWLINES may actually be too large, because it counts
8551 newlines in string constants, and we don't duplicate those.
8552 But that does no harm. */
8554 ibp = start + length;
8555 obp = ibp + newlines;
8557 while (limit != ibp)
8561 ibp = start + newlines;
8562 limit = start + length + newlines;
8565 while (ibp < limit) {
8566 *obp++ = c = *ibp++;
8569 /* Duplicate the newline. */
8581 if (*ibp == '\\' && ibp[1] == '\n')
8583 /* Delete any comment. */
8584 if (cplusplus_comments && ibp[0] == '/') {
8585 /* Comments are equivalent to spaces. */
8588 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8592 if (ibp[0] != '*' || ibp + 1 >= limit)
8594 /* Comments are equivalent to spaces.
8595 For -traditional, a comment is equivalent to nothing. */
8601 while (ibp + 1 < limit) {
8603 && ibp[1] == '\\' && ibp[2] == '\n')
8604 newline_fix (ibp + 1);
8605 if (ibp[0] == '*' && ibp[1] == '/')
8614 /* Notice and skip strings, so that we don't
8615 think that comments start inside them,
8616 and so we don't duplicate newlines in them. */
8619 while (ibp < limit) {
8620 *obp++ = c = *ibp++;
8623 if (c == '\n' && quotec == '\'')
8625 if (c == '\\' && ibp < limit) {
8626 while (*ibp == '\\' && ibp[1] == '\n')
8639 /* Turn newlines to spaces in the string of length LENGTH at START,
8640 except inside of string constants.
8641 The string is copied into itself with its beginning staying fixed. */
8644 change_newlines (start, length)
8648 register U_CHAR *ibp;
8649 register U_CHAR *obp;
8650 register U_CHAR *limit;
8654 limit = start + length;
8657 while (ibp < limit) {
8658 *obp++ = c = *ibp++;
8661 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8662 string. Skip past the newline and its duplicate.
8663 Put a space in the output. */
8674 /* Notice and skip strings, so that we don't delete newlines in them. */
8677 while (ibp < limit) {
8678 *obp++ = c = *ibp++;
8681 if (c == '\n' && quotec == '\'')
8692 /* my_strerror - return the descriptive text associated with an
8696 my_strerror (errnum)
8702 #ifndef HAVE_STRERROR
8703 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8705 result = strerror (errnum);
8708 /* VAXCRTL's strerror() takes an optional second argument, which only
8709 matters when the first argument is EVMSERR. However, it's simplest
8710 just to pass it unconditionally. `vaxc$errno' is declared in
8711 <errno.h>, and maintained by the library in parallel with `errno'.
8712 We assume that caller's `errnum' either matches the last setting of
8713 `errno' by the library or else does not have the value `EVMSERR'. */
8715 result = strerror (errnum, vaxc$errno);
8719 result = "undocumented I/O error";
8724 /* error - print error message and increment count of errors. */
8727 error (PRINTF_ALIST (msg))
8732 VA_START (args, msg);
8743 FILE_BUF *ip = NULL;
8745 print_containing_files ();
8747 for (i = indepth; i >= 0; i--)
8748 if (instack[i].fname != NULL) {
8754 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8755 vfprintf (stderr, msg, args);
8756 fprintf (stderr, "\n");
8760 /* Error including a message from `errno'. */
8763 error_from_errno (name)
8767 FILE_BUF *ip = NULL;
8769 print_containing_files ();
8771 for (i = indepth; i >= 0; i--)
8772 if (instack[i].fname != NULL) {
8778 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8780 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8785 /* Print error message but don't count it. */
8788 warning (PRINTF_ALIST (msg))
8793 VA_START (args, msg);
8794 vwarning (msg, args);
8799 vwarning (msg, args)
8804 FILE_BUF *ip = NULL;
8806 if (inhibit_warnings)
8809 if (warnings_are_errors)
8812 print_containing_files ();
8814 for (i = indepth; i >= 0; i--)
8815 if (instack[i].fname != NULL) {
8821 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8822 fprintf (stderr, "warning: ");
8823 vfprintf (stderr, msg, args);
8824 fprintf (stderr, "\n");
8828 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8829 error_with_line (int line, PRINTF_ALIST (msg))
8831 error_with_line (line, PRINTF_ALIST (msg))
8838 VA_START (args, msg);
8839 verror_with_line (line, msg, args);
8844 verror_with_line (line, msg, args)
8850 FILE_BUF *ip = NULL;
8852 print_containing_files ();
8854 for (i = indepth; i >= 0; i--)
8855 if (instack[i].fname != NULL) {
8861 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8862 vfprintf (stderr, msg, args);
8863 fprintf (stderr, "\n");
8868 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8869 warning_with_line (int line, PRINTF_ALIST (msg))
8871 warning_with_line (line, PRINTF_ALIST (msg))
8878 VA_START (args, msg);
8879 vwarning_with_line (line, msg, args);
8884 vwarning_with_line (line, msg, args)
8890 FILE_BUF *ip = NULL;
8892 if (inhibit_warnings)
8895 if (warnings_are_errors)
8898 print_containing_files ();
8900 for (i = indepth; i >= 0; i--)
8901 if (instack[i].fname != NULL) {
8907 fprintf (stderr, line ? "%s:%d: " : "%s: ", ip->nominal_fname, line);
8908 fprintf (stderr, "warning: ");
8909 vfprintf (stderr, msg, args);
8910 fprintf (stderr, "\n");
8913 /* Print an error message and maybe count it. */
8916 pedwarn (PRINTF_ALIST (msg))
8921 VA_START (args, msg);
8922 if (pedantic_errors)
8925 vwarning (msg, args);
8930 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8931 pedwarn_with_line (int line, PRINTF_ALIST (msg))
8933 pedwarn_with_line (line, PRINTF_ALIST (msg))
8940 VA_START (args, msg);
8941 if (pedantic_errors)
8942 verror_with_line (line, msg, args);
8944 vwarning_with_line (line, msg, args);
8948 /* Report a warning (or an error if pedantic_errors)
8949 giving specified file name and line number, not current. */
8952 #if defined (__STDC__) && defined (HAVE_VPRINTF)
8953 pedwarn_with_file_and_line (char *file, int line, PRINTF_ALIST (msg))
8955 pedwarn_with_file_and_line (file, line, PRINTF_ALIST (msg))
8963 if (!pedantic_errors && inhibit_warnings)
8966 fprintf (stderr, "%s:%d: ", file, line);
8967 if (pedantic_errors)
8969 if (!pedantic_errors)
8970 fprintf (stderr, "warning: ");
8971 VA_START (args, msg);
8972 vfprintf (stderr, msg, args);
8974 fprintf (stderr, "\n");
8977 /* Print the file names and line numbers of the #include
8978 directives which led to the current file. */
8981 print_containing_files ()
8983 FILE_BUF *ip = NULL;
8987 /* If stack of files hasn't changed since we last printed
8988 this info, don't repeat it. */
8989 if (last_error_tick == input_file_stack_tick)
8992 for (i = indepth; i >= 0; i--)
8993 if (instack[i].fname != NULL) {
8998 /* Give up if we don't find a source file. */
9002 /* Find the other, outer source files. */
9003 for (i--; i >= 0; i--)
9004 if (instack[i].fname != NULL) {
9008 fprintf (stderr, "In file included");
9010 fprintf (stderr, ",\n ");
9013 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
9016 fprintf (stderr, ":\n");
9018 /* Record we have printed the status as of this time. */
9019 last_error_tick = input_file_stack_tick;
9022 /* Return the line at which an error occurred.
9023 The error is not necessarily associated with the current spot
9024 in the input stack, so LINE says where. LINE will have been
9025 copied from ip->lineno for the current input level.
9026 If the current level is for a file, we return LINE.
9027 But if the current level is not for a file, LINE is meaningless.
9028 In that case, we return the lineno of the innermost file. */
9031 line_for_error (line)
9037 for (i = indepth; i >= 0; ) {
9038 if (instack[i].fname != 0)
9043 line1 = instack[i].lineno;
9051 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
9053 * As things stand, nothing is ever placed in the output buffer to be
9054 * removed again except when it's KNOWN to be part of an identifier,
9055 * so flushing and moving down everything left, instead of expanding,
9059 /* You might think void was cleaner for the return type,
9060 but that would get type mismatch in check_expand in strict ANSI. */
9063 grow_outbuf (obuf, needed)
9064 register FILE_BUF *obuf;
9065 register int needed;
9070 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
9073 /* Make it at least twice as big as it is now. */
9075 /* Make it have at least 150% of the free space we will need. */
9076 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
9077 if (minsize > obuf->length)
9078 obuf->length = minsize;
9080 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
9083 obuf->bufp = p + (obuf->bufp - obuf->buf);
9089 /* Symbol table for macro names and special symbols */
9092 * install a name in the main hash table, even if it is already there.
9093 * name stops with first non alphanumeric, except leading '#'.
9094 * caller must check against redefinition if that is desired.
9095 * delete_macro () removes things installed by install () in fifo order.
9096 * this is important because of the `defined' special symbol used
9097 * in #if, and also if pushdef/popdef directives are ever implemented.
9099 * If LEN is >= 0, it is the length of the name.
9100 * Otherwise, compute the length by scanning the entire name.
9102 * If HASH is >= 0, it is the precomputed hash code.
9103 * Otherwise, compute the hash code.
9107 install (name, len, type, value, hash)
9110 enum node_type type;
9114 register HASHNODE *hp;
9115 register int i, bucket;
9116 register U_CHAR *p, *q;
9120 while (is_idchar[*p])
9126 hash = hashf (name, len, HASHSIZE);
9128 i = sizeof (HASHNODE) + len + 1;
9129 hp = (HASHNODE *) xmalloc (i);
9131 hp->bucket_hdr = &hashtab[bucket];
9132 hp->next = hashtab[bucket];
9133 hashtab[bucket] = hp;
9135 if (hp->next != NULL)
9136 hp->next->prev = hp;
9139 hp->value.cpval = value;
9140 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
9143 for (i = 0; i < len; i++)
9150 * find the most recent hash node for name name (ending with first
9151 * non-identifier char) installed by install
9153 * If LEN is >= 0, it is the length of the name.
9154 * Otherwise, compute the length by scanning the entire name.
9156 * If HASH is >= 0, it is the precomputed hash code.
9157 * Otherwise, compute the hash code.
9161 lookup (name, len, hash)
9166 register U_CHAR *bp;
9167 register HASHNODE *bucket;
9170 for (bp = name; is_idchar[*bp]; bp++) ;
9175 hash = hashf (name, len, HASHSIZE);
9177 bucket = hashtab[hash];
9179 if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
9181 bucket = bucket->next;
9187 * Delete a hash node. Some weirdness to free junk from macros.
9188 * More such weirdness will have to be added if you define more hash
9189 * types that need it.
9192 /* Note that the DEFINITION of a macro is removed from the hash table
9193 but its storage is not freed. This would be a storage leak
9194 except that it is not reasonable to keep undefining and redefining
9195 large numbers of macros many times.
9196 In any case, this is necessary, because a macro can be #undef'd
9197 in the middle of reading the arguments to a call to it.
9198 If #undef freed the DEFINITION, that would crash. */
9205 if (hp->prev != NULL)
9206 hp->prev->next = hp->next;
9207 if (hp->next != NULL)
9208 hp->next->prev = hp->prev;
9210 /* Make sure that the bucket chain header that the deleted guy was
9211 on points to the right thing afterwards. */
9212 if (hp == *hp->bucket_hdr)
9213 *hp->bucket_hdr = hp->next;
9216 if (hp->type == T_MACRO) {
9217 DEFINITION *d = hp->value.defn;
9218 struct reflist *ap, *nextap;
9220 for (ap = d->pattern; ap != NULL; ap = nextap) {
9231 * return hash function on name. must be compatible with the one
9232 * computed a step at a time, elsewhere
9236 hashf (name, len, hashsize)
9237 register U_CHAR *name;
9244 r = HASHSTEP (r, *name++);
9246 return MAKE_POS (r) % hashsize;
9250 /* Dump the definition of a single macro HP to OF. */
9253 dump_single_macro (hp, of)
9254 register HASHNODE *hp;
9257 register DEFINITION *defn = hp->value.defn;
9263 /* Print the definition of the macro HP. */
9265 fprintf (of, "#define %s", hp->name);
9267 if (defn->nargs >= 0) {
9271 for (i = 0; i < defn->nargs; i++) {
9272 dump_arg_n (defn, i, of);
9273 if (i + 1 < defn->nargs)
9283 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9284 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9285 offset += ap->nchars;
9287 if (ap->nchars != 0)
9289 if (ap->stringify) {
9290 switch (ap->stringify) {
9291 case SHARP_TOKEN: fprintf (of, "#"); break;
9292 case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
9293 case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break;
9294 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break;
9298 if (ap->raw_before != 0) {
9300 switch (ap->raw_before) {
9301 case WHITE_SHARP_TOKEN:
9302 case WHITE_PERCENT_COLON_TOKEN:
9309 switch (ap->raw_before) {
9310 case SHARP_TOKEN: fprintf (of, "##"); break;
9311 case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
9312 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9313 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break;
9320 dump_arg_n (defn, ap->argno, of);
9321 if (!traditional && ap->raw_after != 0) {
9322 switch (ap->raw_after) {
9323 case SHARP_TOKEN: fprintf (of, "##"); break;
9324 case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
9325 case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
9326 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break;
9332 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9336 /* Dump all macro definitions as #defines to stdout. */
9343 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9344 register HASHNODE *hp;
9346 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9347 if (hp->type == T_MACRO)
9348 dump_single_macro (hp, stdout);
9353 /* Output to OF a substring of a macro definition.
9354 BASE is the beginning of the definition.
9355 Output characters START thru LENGTH.
9356 Unless traditional, discard newlines outside of strings, thus
9357 converting funny-space markers to ordinary spaces. */
9360 dump_defn_1 (base, start, length, of)
9366 U_CHAR *p = base + start;
9367 U_CHAR *limit = base + start + length;
9370 fwrite (p, sizeof (*p), length, of);
9373 if (*p == '\"' || *p =='\'') {
9374 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9375 NULL_PTR, NULL_PTR);
9376 fwrite (p, sizeof (*p), p1 - p, of);
9387 /* Print the name of argument number ARGNUM of macro definition DEFN
9389 Recall that DEFN->args.argnames contains all the arg names
9390 concatenated in reverse order with comma-space in between. */
9393 dump_arg_n (defn, argnum, of)
9398 register U_CHAR *p = defn->args.argnames;
9399 while (argnum + 1 < defn->nargs) {
9400 p = (U_CHAR *) index ((char *) p, ' ') + 1;
9404 while (*p && *p != ',') {
9410 /* Initialize syntactic classifications of characters. */
9413 initialize_char_syntax ()
9418 * Set up is_idchar and is_idstart tables. These should be
9419 * faster than saying (is_alpha (c) || c == '_'), etc.
9420 * Set up these things before calling any routines tthat
9423 for (i = 'a'; i <= 'z'; i++) {
9424 is_idchar[i - 'a' + 'A'] = 1;
9426 is_idstart[i - 'a' + 'A'] = 1;
9429 for (i = '0'; i <= '9'; i++)
9432 is_idstart['_'] = 1;
9434 is_idstart['$'] = 1;
9436 /* horizontal space table */
9437 is_hor_space[' '] = 1;
9438 is_hor_space['\t'] = 1;
9439 is_hor_space['\v'] = 1;
9440 is_hor_space['\f'] = 1;
9441 is_hor_space['\r'] = 1;
9450 char_name['\v'] = "vertical tab";
9451 char_name['\f'] = "formfeed";
9452 char_name['\r'] = "carriage return";
9455 /* Initialize the built-in macros. */
9458 initialize_builtins (inp, outp)
9462 install ((U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
9463 install ((U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1);
9464 install ((U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1);
9465 install ((U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
9466 install ((U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
9467 install ((U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1);
9468 #ifndef NO_BUILTIN_SIZE_TYPE
9469 install ((U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
9471 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9472 install ((U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
9474 install ((U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
9475 install ((U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE,
9477 install ((U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE,
9479 install ((U_CHAR *) "__IMMEDIATE_PREFIX__", -1, T_IMMEDIATE_PREFIX_TYPE,
9481 install ((U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1);
9483 install ((U_CHAR *) "__STDC__", -1, T_CONST, "1", -1);
9484 install ((U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1);
9487 install ((U_CHAR *) "__OBJC__", -1, T_CONST, "1", -1);
9488 /* This is supplied using a -D by the compiler driver
9489 so that it is present only when truly compiling with GNU C. */
9490 /* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */
9491 install ((U_CHAR *) "__HAVE_BUILTIN_SETJMP__", -1, T_CONST, "1", -1);
9495 char directive[2048];
9496 U_CHAR *udirective = (U_CHAR *) directive;
9497 register struct directive *dp = &directive_table[0];
9498 struct tm *timebuf = timestamp ();
9500 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9501 instack[0].nominal_fname);
9502 output_line_directive (inp, outp, 0, same_file);
9503 pass_thru_directive (udirective, &udirective[strlen (directive)],
9506 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9507 output_line_directive (inp, outp, 0, same_file);
9508 pass_thru_directive (udirective, &udirective[strlen (directive)],
9511 #ifndef NO_BUILTIN_SIZE_TYPE
9512 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9513 output_line_directive (inp, outp, 0, same_file);
9514 pass_thru_directive (udirective, &udirective[strlen (directive)],
9518 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9519 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9520 output_line_directive (inp, outp, 0, same_file);
9521 pass_thru_directive (udirective, &udirective[strlen (directive)],
9525 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9526 output_line_directive (inp, outp, 0, same_file);
9527 pass_thru_directive (udirective, &udirective[strlen (directive)],
9530 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9531 monthnames[timebuf->tm_mon],
9532 timebuf->tm_mday, timebuf->tm_year + 1900);
9533 output_line_directive (inp, outp, 0, same_file);
9534 pass_thru_directive (udirective, &udirective[strlen (directive)],
9537 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9538 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9539 output_line_directive (inp, outp, 0, same_file);
9540 pass_thru_directive (udirective, &udirective[strlen (directive)],
9545 sprintf (directive, " __STDC__ 1");
9546 output_line_directive (inp, outp, 0, same_file);
9547 pass_thru_directive (udirective, &udirective[strlen (directive)],
9552 sprintf (directive, " __OBJC__ 1");
9553 output_line_directive (inp, outp, 0, same_file);
9554 pass_thru_directive (udirective, &udirective[strlen (directive)],
9561 * process a given definition string, for initialization
9562 * If STR is just an identifier, define it with value 1.
9563 * If STR has anything after the identifier, then it should
9564 * be identifier=definition.
9568 make_definition (str, op)
9573 struct directive *kt;
9576 p = buf = (U_CHAR *) str;
9577 if (!is_idstart[*p]) {
9578 error ("malformed option `-D %s'", str);
9581 while (is_idchar[*++p])
9584 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9587 p = (U_CHAR *) str; /* Error */
9590 buf = (U_CHAR *) alloca (p - buf + 4);
9591 strcpy ((char *)buf, str);
9592 strcat ((char *)buf, " 1");
9593 } else if (*p != '=') {
9594 error ("malformed option `-D %s'", str);
9598 /* Copy the entire option so we can modify it. */
9599 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9600 strncpy ((char *) buf, str, p - (U_CHAR *) str);
9601 /* Change the = to a space. */
9602 buf[p - (U_CHAR *) str] = ' ';
9603 /* Scan for any backslash-newline and remove it. */
9605 q = &buf[p - (U_CHAR *) str];
9607 if (*p == '\"' || *p == '\'') {
9608 int unterminated = 0;
9609 U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0,
9610 NULL_PTR, NULL_PTR, &unterminated);
9614 if (*p == '\\' && p[1] == '\n')
9618 } else if (*p == '\\' && p[1] == '\n')
9620 /* Change newline chars into newline-markers. */
9621 else if (*p == '\n')
9633 ip = &instack[++indepth];
9634 ip->nominal_fname = ip->fname = "*Initialization*";
9636 ip->buf = ip->bufp = buf;
9637 ip->length = strlen ((char *) buf);
9641 ip->if_stack = if_stack;
9642 ip->system_header_p = 0;
9644 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9647 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9648 do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt);
9652 /* JF, this does the work for the -U option */
9655 make_undef (str, op)
9660 struct directive *kt;
9662 ip = &instack[++indepth];
9663 ip->nominal_fname = ip->fname = "*undef*";
9665 ip->buf = ip->bufp = (U_CHAR *) str;
9666 ip->length = strlen (str);
9670 ip->if_stack = if_stack;
9671 ip->system_header_p = 0;
9673 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9676 do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt);
9680 /* Process the string STR as if it appeared as the body of a #assert.
9681 OPTION is the option name for which STR was the argument. */
9684 make_assertion (option, str)
9689 struct directive *kt;
9690 U_CHAR *buf, *p, *q;
9692 /* Copy the entire option so we can modify it. */
9693 buf = (U_CHAR *) alloca (strlen (str) + 1);
9694 strcpy ((char *) buf, str);
9695 /* Scan for any backslash-newline and remove it. */
9698 if (*p == '\\' && p[1] == '\n')
9706 if (!is_idstart[*p]) {
9707 error ("malformed option `%s %s'", option, str);
9710 while (is_idchar[*++p])
9712 SKIP_WHITE_SPACE (p);
9713 if (! (*p == 0 || *p == '(')) {
9714 error ("malformed option `%s %s'", option, str);
9718 ip = &instack[++indepth];
9719 ip->nominal_fname = ip->fname = "*Initialization*";
9721 ip->buf = ip->bufp = buf;
9722 ip->length = strlen ((char *) buf);
9726 ip->if_stack = if_stack;
9727 ip->system_header_p = 0;
9729 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9732 /* Pass NULL as output ptr to do_define since we KNOW it never does
9734 do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt);
9738 /* The previous include prefix, if any, is PREV_FILE_NAME.
9739 Allocate a new include prefix whose name is the
9740 simplified concatenation of PREFIX and NAME,
9741 with a trailing / added if needed.
9742 But return 0 if the include prefix should be ignored,
9743 e.g. because it is a duplicate of PREV_FILE_NAME. */
9745 static struct file_name_list *
9746 new_include_prefix (prev_file_name, prefix, name)
9747 struct file_name_list *prev_file_name;
9752 fatal ("Directory name missing after command line option");
9755 /* Ignore the empty string. */
9758 struct file_name_list *dir
9759 = ((struct file_name_list *)
9760 xmalloc (sizeof (struct file_name_list)
9761 + strlen (prefix) + strlen (name) + 1 /* for trailing / */));
9763 strcpy (dir->fname, prefix);
9764 strcat (dir->fname, name);
9765 len = simplify_filename (dir->fname);
9767 /* Convert directory name to a prefix. */
9768 if (dir->fname[len - 1] != '/') {
9769 if (len == 1 && dir->fname[len - 1] == '.')
9772 dir->fname[len++] = '/';
9773 dir->fname[len] = 0;
9776 /* Ignore a directory whose name matches the previous one. */
9777 if (prev_file_name && !strcmp (prev_file_name->fname, dir->fname)) {
9778 /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
9779 if (!first_bracket_include)
9780 first_bracket_include = prev_file_name;
9786 /* VMS can't stat dir prefixes, so skip these optimizations in VMS. */
9788 /* Ignore a nonexistent directory. */
9789 if (stat (len ? dir->fname : ".", &dir->st) != 0) {
9790 if (errno != ENOENT && errno != ENOTDIR)
9791 error_from_errno (dir->fname);
9796 /* Ignore a directory whose identity matches the previous one. */
9798 && INO_T_EQ (prev_file_name->st.st_ino, dir->st.st_ino)
9799 && prev_file_name->st.st_dev == dir->st.st_dev) {
9800 /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
9801 if (!first_bracket_include)
9802 first_bracket_include = prev_file_name;
9809 dir->c_system_include_path = 0;
9810 dir->got_name_map = 0;
9816 /* Append a chain of `struct file_name_list's
9817 to the end of the main include chain.
9818 FIRST is the beginning of the chain to append, and LAST is the end. */
9821 append_include_chain (first, last)
9822 struct file_name_list *first, *last;
9824 struct file_name_list *dir;
9826 if (!first || !last)
9832 last_include->next = first;
9834 if (first_bracket_include == 0)
9835 first_bracket_include = first;
9837 for (dir = first; ; dir = dir->next) {
9838 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9839 if (len > max_include_len)
9840 max_include_len = len;
9846 last_include = last;
9849 /* Add output to `deps_buffer' for the -M switch.
9850 STRING points to the text to be output.
9851 SPACER is ':' for targets, ' ' for dependencies. */
9854 deps_output (string, spacer)
9858 int size = strlen (string);
9863 #ifndef MAX_OUTPUT_COLUMNS
9864 #define MAX_OUTPUT_COLUMNS 72
9866 if (MAX_OUTPUT_COLUMNS - 1 /*spacer*/ - 2 /*` \'*/ < deps_column + size
9867 && 1 < deps_column) {
9868 bcopy (" \\\n ", &deps_buffer[deps_size], 4);
9875 if (deps_size + size + 8 > deps_allocated_size) {
9876 deps_allocated_size = (deps_size + size + 50) * 2;
9877 deps_buffer = xrealloc (deps_buffer, deps_allocated_size);
9879 if (spacer == ' ') {
9880 deps_buffer[deps_size++] = ' ';
9883 bcopy (string, &deps_buffer[deps_size], size);
9885 deps_column += size;
9886 if (spacer == ':') {
9887 deps_buffer[deps_size++] = ':';
9890 deps_buffer[deps_size] = 0;
9894 fatal (PRINTF_ALIST (msg))
9899 fprintf (stderr, "%s: ", progname);
9900 VA_START (args, msg);
9901 vfprintf (stderr, msg, args);
9903 fprintf (stderr, "\n");
9904 exit (FATAL_EXIT_CODE);
9907 /* More 'friendly' abort that prints the line and file.
9908 config.h can #define abort fancy_abort if you like that sort of thing. */
9913 fatal ("Internal gcc abort.");
9917 perror_with_name (name)
9920 fprintf (stderr, "%s: ", progname);
9921 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9926 pfatal_with_name (name)
9929 perror_with_name (name);
9933 exit (FATAL_EXIT_CODE);
9937 /* Handler for SIGPIPE. */
9941 /* If this is missing, some compilers complain. */
9944 fatal ("output pipe has been closed");
9950 fatal ("Memory exhausted.");
9958 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (size);
9965 xrealloc (old, size)
9969 register GENERIC_PTR ptr = (GENERIC_PTR) realloc (old, size);
9976 xcalloc (number, size)
9977 size_t number, size;
9979 register size_t total = number * size;
9980 register GENERIC_PTR ptr = (GENERIC_PTR) malloc (total);
9991 size_t size = strlen (input);
9992 char *output = xmalloc (size + 1);
9993 strcpy (output, input);
9999 /* Under VMS we need to fix up the "include" specification filename so
10000 that everything following the 1st slash is changed into its correct
10001 VMS file specification. */
10004 hack_vms_include_specification (fname)
10007 register char *cp, *cp1, *cp2;
10008 int f, check_filename_before_returning;
10011 check_filename_before_returning = 0;
10013 cp = base_name (fname);
10016 * Check if we have a vax-c style '#include filename'
10017 * and add the missing .h
10019 if (!index (cp,'.'))
10022 cp2 = Local; /* initialize */
10024 /* We are trying to do a number of things here. First of all, we are
10025 trying to hammer the filenames into a standard format, such that later
10026 processing can handle them.
10028 If the file name contains something like [dir.], then it recognizes this
10029 as a root, and strips the ".]". Later processing will add whatever is
10030 needed to get things working properly.
10032 If no device is specified, then the first directory name is taken to be
10033 a device name (or a rooted logical). */
10035 /* See if we found that 1st slash */
10036 if (cp == 0) return; /* Nothing to do!!! */
10037 if (*cp != '/') return; /* Nothing to do!!! */
10038 /* Point to the UNIX filename part (which needs to be fixed!) */
10040 /* If the directory spec is not rooted, we can just copy
10041 the UNIX filename part and we are done */
10042 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
10043 if (cp[-2] != '.') {
10045 * The VMS part ends in a `]', and the preceding character is not a `.'.
10046 * We strip the `]', and then splice the two parts of the name in the
10047 * usual way. Given the default locations for include files in cccp.c,
10048 * we will only use this code if the user specifies alternate locations
10049 * with the /include (-I) switch on the command line. */
10050 cp -= 1; /* Strip "]" */
10051 cp1--; /* backspace */
10054 * The VMS part has a ".]" at the end, and this will not do. Later
10055 * processing will add a second directory spec, and this would be a syntax
10056 * error. Thus we strip the ".]", and thus merge the directory specs.
10057 * We also backspace cp1, so that it points to a '/'. This inhibits the
10058 * generation of the 000000 root directory spec (which does not belong here
10061 cp -= 2; /* Strip ".]" */
10062 cp1--; }; /* backspace */
10065 /* We drop in here if there is no VMS style directory specification yet.
10066 * If there is no device specification either, we make the first dir a
10067 * device and try that. If we do not do this, then we will be essentially
10068 * searching the users default directory (as if they did a #include "asdf.h").
10070 * Then all we need to do is to push a '[' into the output string. Later
10071 * processing will fill this in, and close the bracket.
10073 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
10074 *cp2++ = '['; /* Open the directory specification */
10077 /* at this point we assume that we have the device spec, and (at least
10078 the opening "[" for a directory specification. We may have directories
10079 specified already */
10081 /* If there are no other slashes then the filename will be
10082 in the "root" directory. Otherwise, we need to add
10083 directory specifications. */
10084 if (index (cp1, '/') == 0) {
10085 /* Just add "000000]" as the directory string */
10086 strcpy (cp2, "000000]");
10087 cp2 += strlen (cp2);
10088 check_filename_before_returning = 1; /* we might need to fool with this later */
10090 /* As long as there are still subdirectories to add, do them. */
10091 while (index (cp1, '/') != 0) {
10092 /* If this token is "." we can ignore it */
10093 if ((cp1[0] == '.') && (cp1[1] == '/')) {
10097 /* Add a subdirectory spec. Do not duplicate "." */
10098 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
10100 /* If this is ".." then the spec becomes "-" */
10101 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
10102 /* Add "-" and skip the ".." */
10107 /* Copy the subdirectory */
10108 while (*cp1 != '/') *cp2++= *cp1++;
10109 cp1++; /* Skip the "/" */
10111 /* Close the directory specification */
10112 if (cp2[-1] == '.') /* no trailing periods */
10116 /* Now add the filename */
10117 while (*cp1) *cp2++ = *cp1++;
10119 /* Now append it to the original VMS spec. */
10120 strcpy (cp, Local);
10122 /* If we put a [000000] in the filename, try to open it first. If this fails,
10123 remove the [000000], and return that name. This provides flexibility
10124 to the user in that they can use both rooted and non-rooted logical names
10125 to point to the location of the file. */
10127 if (check_filename_before_returning) {
10128 f = open (fname, O_RDONLY, 0666);
10130 /* The file name is OK as it is, so return it as is. */
10134 /* The filename did not work. Try to remove the [000000] from the name,
10136 cp = index (fname, '[');
10137 cp2 = index (fname, ']') + 1;
10138 strcpy (cp, cp2); /* this gets rid of it */
10146 /* These are the read/write replacement routines for
10147 VAX-11 "C". They make read/write behave enough
10148 like their UNIX counterparts that CCCP will work */
10151 read (fd, buf, size)
10156 #undef read /* Get back the REAL read routine */
10158 register int total = 0;
10160 /* Read until the buffer is exhausted */
10162 /* Limit each read to 32KB */
10163 i = (size > (32*1024)) ? (32*1024) : size;
10164 i = read (fd, buf, i);
10166 if (i == 0) return (total);
10169 /* Account for this read */
10178 write (fd, buf, size)
10183 #undef write /* Get back the REAL write routine */
10187 /* Limit individual writes to 32Kb */
10190 j = (i > (32*1024)) ? (32*1024) : i;
10191 if (write (fd, buf, j) < 0) return (-1);
10192 /* Account for the data written */
10199 /* The following wrapper functions supply additional arguments to the VMS
10200 I/O routines to optimize performance with file handling. The arguments
10202 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
10203 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
10204 "fop=tef"- Truncate unused portions of file when closing file.
10205 "shr=nil"- Disallow file sharing while file is open. */
10208 freopen (fname, type, oldfile)
10213 #undef freopen /* Get back the REAL fopen routine */
10214 if (strcmp (type, "w") == 0)
10215 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
10216 return freopen (fname, type, oldfile, "mbc=16");
10220 fopen (fname, type)
10224 #undef fopen /* Get back the REAL fopen routine */
10225 /* The gcc-vms-1.42 distribution's header files prototype fopen with two
10226 fixed arguments, which matches ANSI's specification but not VAXCRTL's
10227 pre-ANSI implementation. This hack circumvents the mismatch problem. */
10228 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
10231 return (*vmslib_fopen) (fname, type, "mbc=32",
10232 "deq=64", "fop=tef", "shr=nil");
10234 return (*vmslib_fopen) (fname, type, "mbc=32");
10238 open (fname, flags, prot)
10243 #undef open /* Get back the REAL open routine */
10244 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
10247 /* more VMS hackery */
10251 extern unsigned long sys$parse(), sys$search();
10253 /* Work around another library bug. If a file is located via a searchlist,
10254 and if the device it's on is not the same device as the one specified
10255 in the first element of that searchlist, then both stat() and fstat()
10256 will fail to return info about it. `errno' will be set to EVMSERR, and
10257 `vaxc$errno' will be set to SS$_NORMAL due yet another bug in stat()!
10258 We can get around this by fully parsing the filename and then passing
10259 that absolute name to stat().
10261 Without this fix, we can end up failing to find header files, which is
10262 bad enough, but then compounding the problem by reporting the reason for
10263 failure as "normal successful completion." */
10265 #undef fstat /* get back to library version */
10268 VMS_fstat (fd, statbuf)
10270 struct stat *statbuf;
10272 int result = fstat (fd, statbuf);
10277 char nambuf[NAM$C_MAXRSS+1];
10279 if ((fp = fdopen (fd, "r")) != 0 && fgetname (fp, nambuf) != 0)
10280 result = VMS_stat (nambuf, statbuf);
10281 /* No fclose(fp) here; that would close(fd) as well. */
10288 VMS_stat (name, statbuf)
10290 struct stat *statbuf;
10292 int result = stat (name, statbuf);
10298 char exp_nam[NAM$C_MAXRSS+1], /* expanded name buffer for sys$parse */
10299 res_nam[NAM$C_MAXRSS+1]; /* resultant name buffer for sys$search */
10302 fab.fab$l_fna = (char *) name;
10303 fab.fab$b_fns = (unsigned char) strlen (name);
10304 fab.fab$l_nam = (void *) &nam;
10306 nam.nam$l_esa = exp_nam, nam.nam$b_ess = sizeof exp_nam - 1;
10307 nam.nam$l_rsa = res_nam, nam.nam$b_rss = sizeof res_nam - 1;
10308 nam.nam$b_nop = NAM$M_PWD | NAM$M_NOCONCEAL;
10309 if (sys$parse (&fab) & 1)
10311 if (sys$search (&fab) & 1)
10313 res_nam[nam.nam$b_rsl] = '\0';
10314 result = stat (res_nam, statbuf);
10316 /* Clean up searchlist context cached by the system. */
10317 nam.nam$b_nop = NAM$M_SYNCHK;
10318 fab.fab$l_fna = 0, fab.fab$b_fns = 0;
10319 (void) sys$parse (&fab);