1 /* C Compatible Compiler Preprocessor (CCCP)
2 Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Paul Rubin, June 1986
4 Adapted to ANSI C, Richard Stallman, Jan 1987
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding! */
24 typedef unsigned char U_CHAR;
28 #include "../src/config.h"
36 /* The macro EMACS is defined when cpp is distributed as part of Emacs,
37 for the sake of machines with limited C compilers. */
40 #endif /* not EMACS */
42 #ifndef STANDARD_INCLUDE_DIR
43 #define STANDARD_INCLUDE_DIR "/usr/include"
46 #ifndef LOCAL_INCLUDE_DIR
47 #define LOCAL_INCLUDE_DIR "/usr/local/include"
50 #if 0 /* We can't get ptrdiff_t, so I arranged not to need PTR_INT_TYPE. */
52 #define PTR_INT_TYPE ptrdiff_t
54 #define PTR_INT_TYPE long
60 /* By default, colon separates directories in a path. */
61 #ifndef PATH_SEPARATOR
62 #define PATH_SEPARATOR ':'
65 /* In case config.h defines these. */
70 #include <sys/types.h>
78 #include <sys/time.h> /* for __DATE__ and __TIME__ */
79 #include <sys/resource.h>
86 /* This defines "errno" properly for VMS, and gives us EACCES. */
89 /* VMS-specific definitions */
93 #define O_RDONLY 0 /* Open arg for Read/Only */
94 #define O_WRONLY 1 /* Open arg for Write/Only */
95 #define read(fd,buf,size) VMS_read (fd,buf,size)
96 #define write(fd,buf,size) VMS_write (fd,buf,size)
97 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
98 #define fopen(fname,mode) VMS_fopen (fname,mode)
99 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
100 #define strncat(dst,src,cnt) VMS_strncat (dst,src,cnt)
101 static char * VMS_strncat ();
102 static int VMS_read ();
103 static int VMS_write ();
104 static int VMS_open ();
105 static FILE * VMS_fopen ();
106 static FILE * VMS_freopen ();
107 static void hack_vms_include_specification ();
108 typedef struct { unsigned :16, :16, :16; } vms_ino_t;
109 #define ino_t vms_ino_t
110 #define INCLUDE_LEN_FUDGE 10 /* leave room for VMS syntax conversion */
112 #define BSTRING /* VMS/GCC supplies the bstring routines */
113 #endif /* __GNUC__ */
116 extern char *index ();
117 extern char *rindex ();
125 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
126 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
128 /* Find the largest host integer type and set its size and type. */
130 #ifndef HOST_BITS_PER_WIDE_INT
132 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
133 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
134 #define HOST_WIDE_INT long
136 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
137 #define HOST_WIDE_INT int
143 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
147 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
150 /* Define a generic NULL if one hasn't already been defined. */
157 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
158 #define GENERIC_PTR void *
160 #define GENERIC_PTR char *
165 #define NULL_PTR ((GENERIC_PTR)0)
168 #ifndef INCLUDE_LEN_FUDGE
169 #define INCLUDE_LEN_FUDGE 0
172 /* Forward declarations. */
178 /* External declarations. */
180 extern char *getenv ();
181 extern FILE *fdopen ();
182 extern char *version_string;
183 extern struct tm *localtime ();
185 #ifndef HAVE_STRERROR
188 extern const char *const sys_errlist[];
190 extern char *sys_errlist[];
192 #else /* HAVE_STERRROR */
196 char *strerror (int,...);
198 extern int parse_escape ();
199 extern HOST_WIDE_INT parse_c_expression ();
205 /* Forward declarations. */
212 #if defined(USG) || defined(VMS)
220 /* These functions are declared to return int instead of void since they
221 are going to be placed in a table and some old compilers have trouble with
222 pointers to functions returning void. */
224 static int do_define ();
225 static int do_line ();
226 static int do_include ();
227 static int do_undef ();
228 static int do_error ();
229 static int do_pragma ();
230 static int do_ident ();
232 static int do_xifdef ();
233 static int do_else ();
234 static int do_elif ();
235 static int do_endif ();
236 static int do_sccs ();
237 static int do_once ();
238 static int do_assert ();
239 static int do_unassert ();
240 static int do_warning ();
242 static void add_import ();
243 static void append_include_chain ();
244 static void deps_output ();
245 static void make_undef ();
246 static void make_definition ();
247 static void make_assertion ();
248 static void path_include ();
249 static void initialize_builtins ();
250 static void initialize_char_syntax ();
251 static void dump_arg_n ();
252 static void dump_defn_1 ();
253 static void delete_macro ();
254 static void trigraph_pcp ();
255 static void rescan ();
256 static void finclude ();
257 static void validate_else ();
258 static int comp_def_part ();
259 static void error_from_errno ();
260 static void error_with_line ();
262 void pedwarn_with_line ();
263 static void pedwarn_with_file_and_line ();
264 static void fatal ();
266 static void pfatal_with_name ();
267 static void perror_with_name ();
268 static void pipe_closed ();
269 static void print_containing_files ();
270 static int lookup_import ();
271 static int redundant_include_p ();
272 static is_system_include ();
273 static struct file_name_map *read_name_map ();
274 static char *read_filename_string ();
275 static int open_include_file ();
276 static int check_preconditions ();
277 static void pcfinclude ();
278 static void pcstring_used ();
279 static void write_output ();
280 static int check_macro_name ();
281 static int compare_defs ();
282 static int compare_token_lists ();
283 static HOST_WIDE_INT eval_if_expression ();
284 static int discard_comments ();
285 static int change_newlines ();
286 static int line_for_error ();
288 static int file_size_and_mode ();
290 static struct arglist *read_token_list ();
291 static void free_token_list ();
293 static struct hashnode *install ();
294 struct hashnode *lookup ();
296 static struct assertion_hashnode *assertion_install ();
297 static struct assertion_hashnode *assertion_lookup ();
299 static char *xrealloc ();
300 static char *xcalloc ();
301 static char *savestring ();
303 static void delete_assertion ();
304 static void macroexpand ();
305 static void dump_all_macros ();
306 static void conditional_skip ();
307 static void skip_if_group ();
308 static void output_line_command ();
310 /* Last arg to output_line_command. */
311 enum file_change_code {same_file, enter_file, leave_file};
313 static int grow_outbuf ();
314 static int handle_directive ();
315 static void memory_full ();
317 static U_CHAR *macarg1 ();
318 static char *macarg ();
320 static U_CHAR *skip_to_end_of_comment ();
321 static U_CHAR *skip_quoted_string ();
322 static U_CHAR *skip_paren_group ();
323 static char *quote_string ();
325 static char *check_precompiled ();
326 /* static struct macrodef create_definition (); [moved below] */
327 static void dump_single_macro ();
328 static void output_dots ();
330 #ifndef FAILURE_EXIT_CODE
331 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
334 #ifndef SUCCESS_EXIT_CODE
335 #define SUCCESS_EXIT_CODE 0 /* 0 means success on Unix. */
338 /* Name under which this program was invoked. */
340 static char *progname;
342 /* Nonzero means use extra default include directories for C++. */
344 static int cplusplus;
346 /* Nonzero means handle cplusplus style comments */
348 static int cplusplus_comments;
350 /* Nonzero means handle #import, for objective C. */
354 /* Nonzero means this is an assembly file, and allow
355 unknown directives, which could be comments. */
359 /* Current maximum length of directory names in the search path
360 for include files. (Altered as we get more of them.) */
362 static int max_include_len;
364 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
366 static int for_lint = 0;
368 /* Nonzero means copy comments into the output file. */
370 static int put_out_comments = 0;
372 /* Nonzero means don't process the ANSI trigraph sequences. */
374 static int no_trigraphs = 0;
376 /* Nonzero means print the names of included files rather than
377 the preprocessed output. 1 means just the #include "...",
378 2 means #include <...> as well. */
380 static int print_deps = 0;
382 /* Nonzero if missing .h files in -M output are assumed to be generated
383 files and not errors. */
385 static int print_deps_missing_files = 0;
387 /* Nonzero means print names of header files (-H). */
389 static int print_include_names = 0;
391 /* Nonzero means don't output line number information. */
393 static int no_line_commands;
395 /* Nonzero means output the text in failing conditionals,
396 inside #failed ... #endfailed. */
398 static int output_conditionals;
400 /* dump_only means inhibit output of the preprocessed text
401 and instead output the definitions of all user-defined
402 macros in a form suitable for use as input to cccp.
403 dump_names means pass #define and the macro name through to output.
404 dump_definitions means pass the whole definition (plus #define) through
407 static enum {dump_none, dump_only, dump_names, dump_definitions}
408 dump_macros = dump_none;
410 /* Nonzero means pass all #define and #undef directives which we actually
411 process through to the output stream. This feature is used primarily
412 to allow cc1 to record the #defines and #undefs for the sake of
413 debuggers which understand about preprocessor macros, but it may
414 also be useful with -E to figure out how symbols are defined, and
415 where they are defined. */
416 static int debug_output = 0;
418 /* Nonzero indicates special processing used by the pcp program. The
419 special effects of this mode are:
421 Inhibit all macro expansion, except those inside #if directives.
423 Process #define directives normally, and output their contents
426 Output preconditions to pcp_outfile indicating all the relevant
427 preconditions for use of this file in a later cpp run.
429 static FILE *pcp_outfile;
431 /* Nonzero means we are inside an IF during a -pcp run. In this mode
432 macro expansion is done, and preconditions are output for all macro
433 uses requiring them. */
434 static int pcp_inside_if;
436 /* Nonzero means never to include precompiled files.
437 This is 1 since there's no way now to make precompiled files,
438 so it's not worth testing for them. */
439 static int no_precomp = 1;
441 /* Nonzero means give all the error messages the ANSI standard requires. */
445 /* Nonzero means try to make failure to fit ANSI C an error. */
447 static int pedantic_errors;
449 /* Nonzero means don't print warning messages. -w. */
451 static int inhibit_warnings = 0;
453 /* Nonzero means warn if slash-star appears in a comment. */
455 static int warn_comments;
457 /* Nonzero means warn if a macro argument is (or would be)
458 stringified with -traditional. */
460 static int warn_stringify;
462 /* Nonzero means warn if there are any trigraphs. */
464 static int warn_trigraphs;
466 /* Nonzero means warn if #import is used. */
468 static int warn_import = 1;
470 /* Nonzero means turn warnings into errors. */
472 static int warnings_are_errors;
474 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
478 /* Nonzero causes output not to be done,
479 but directives such as #define that have side effects
482 static int no_output;
484 /* Nonzero means this file was included with a -imacros or -include
485 command line and should not be recorded as an include file. */
487 static int no_record_file;
489 /* Nonzero means that we have finished processing the command line options.
490 This flag is used to decide whether or not to issue certain errors
493 static int done_initializing = 0;
495 /* Line where a newline was first seen in a string constant. */
497 static int multiline_string_line = 0;
499 /* I/O buffer structure.
500 The `fname' field is nonzero for source files and #include files
501 and for the dummy text used for -D and -U.
502 It is zero for rescanning results of macro expansion
503 and for expanding macro arguments. */
504 #define INPUT_STACK_MAX 400
505 static struct file_buf {
507 /* Filename specified with #line command. */
509 /* Record where in the search path this file was found.
510 For #include_next. */
511 struct file_name_list *dir;
516 /* Macro that this level is the expansion of.
517 Included so that we can reenable the macro
518 at the end of this level. */
519 struct hashnode *macro;
520 /* Value of if_stack at start of this file.
521 Used to prohibit unmatched #endif (etc) in an include file. */
522 struct if_stack *if_stack;
523 /* Object to be freed at end of input at this level. */
525 /* True if this is a header file included using <FILENAME>. */
526 char system_header_p;
527 } instack[INPUT_STACK_MAX];
529 static int last_error_tick; /* Incremented each time we print it. */
530 static int input_file_stack_tick; /* Incremented when the status changes. */
532 /* Current nesting level of input sources.
533 `instack[indepth]' is the level currently being read. */
534 static int indepth = -1;
535 #define CHECK_DEPTH(code) \
536 if (indepth >= (INPUT_STACK_MAX - 1)) \
538 error_with_line (line_for_error (instack[indepth].lineno), \
539 "macro or `#include' recursion too deep"); \
543 /* Current depth in #include directives that use <...>. */
544 static int system_include_depth = 0;
546 typedef struct file_buf FILE_BUF;
548 /* The output buffer. Its LENGTH field is the amount of room allocated
549 for the buffer, not the number of chars actually present. To get
550 that, subtract outbuf.buf from outbuf.bufp. */
552 #define OUTBUF_SIZE 10 /* initial size of output buffer */
553 static FILE_BUF outbuf;
555 /* Grow output buffer OBUF points at
556 so it can hold at least NEEDED more chars. */
558 #define check_expand(OBUF, NEEDED) \
559 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
560 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
562 struct file_name_list
564 struct file_name_list *next;
566 /* If the following is nonzero, it is a macro name.
567 Don't include the file again if that macro is defined. */
568 U_CHAR *control_macro;
569 /* If the following is nonzero, it is a C-language system include
571 int c_system_include_path;
572 /* Mapping of file names for this directory. */
573 struct file_name_map *name_map;
574 /* Non-zero if name_map is valid. */
578 /* #include "file" looks in source file dir, then stack. */
579 /* #include <file> just looks in the stack. */
580 /* -I directories are added to the end, then the defaults are added. */
582 static struct default_include {
583 char *fname; /* The name of the directory. */
584 int cplusplus; /* Only look here if we're compiling C++. */
585 int cxx_aware; /* Includes in this directory don't need to
586 be wrapped in extern "C" when compiling
588 } include_defaults_array[]
589 #ifdef INCLUDE_DEFAULTS
593 /* Pick up GNU C++ specific include files. */
594 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
596 /* This is the dir for fixincludes. Put it just before
597 the files that we fix. */
598 { GCC_INCLUDE_DIR, 0, 0 },
599 /* For cross-compilation, this dir name is generated
600 automatically in Makefile.in. */
601 { CROSS_INCLUDE_DIR, 0, 0 },
602 /* This is another place that the target system's headers might be. */
603 { TOOL_INCLUDE_DIR, 0, 0 },
604 #else /* not CROSS_COMPILE */
605 /* This should be /usr/local/include and should come before
606 the fixincludes-fixed header files. */
607 { LOCAL_INCLUDE_DIR, 0, 1 },
608 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
609 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
610 { TOOL_INCLUDE_DIR, 0, 0 },
611 /* This is the dir for fixincludes. Put it just before
612 the files that we fix. */
613 { GCC_INCLUDE_DIR, 0, 0 },
614 /* Some systems have an extra dir of include files. */
615 #ifdef SYSTEM_INCLUDE_DIR
616 { SYSTEM_INCLUDE_DIR, 0, 0 },
618 { STANDARD_INCLUDE_DIR, 0, 0 },
619 #endif /* not CROSS_COMPILE */
622 #endif /* no INCLUDE_DEFAULTS */
624 /* The code looks at the defaults through this pointer, rather than through
625 the constant structure above. This pointer gets changed if an environment
626 variable specifies other defaults. */
627 static struct default_include *include_defaults = include_defaults_array;
629 static struct file_name_list *include = 0; /* First dir to search */
630 /* First dir to search for <file> */
631 /* This is the first element to use for #include <...>.
632 If it is 0, use the entire chain for such includes. */
633 static struct file_name_list *first_bracket_include = 0;
634 /* This is the first element in the chain that corresponds to
635 a directory of system header files. */
636 static struct file_name_list *first_system_include = 0;
637 static struct file_name_list *last_include = 0; /* Last in chain */
639 /* Chain of include directories to put at the end of the other chain. */
640 static struct file_name_list *after_include = 0;
641 static struct file_name_list *last_after_include = 0; /* Last in chain */
643 /* Chain to put at the start of the system include files. */
644 static struct file_name_list *before_system = 0;
645 static struct file_name_list *last_before_system = 0; /* Last in chain */
647 /* List of included files that contained #pragma once. */
648 static struct file_name_list *dont_repeat_files = 0;
650 /* List of other included files.
651 If ->control_macro if nonzero, the file had a #ifndef
652 around the entire contents, and ->control_macro gives the macro name. */
653 static struct file_name_list *all_include_files = 0;
655 /* Directory prefix that should replace `/usr' in the standard
656 include file directories. */
657 static char *include_prefix;
659 /* Global list of strings read in from precompiled files. This list
660 is kept in the order the strings are read in, with new strings being
661 added at the end through stringlist_tailp. We use this list to output
662 the strings at the end of the run.
664 static STRINGDEF *stringlist;
665 static STRINGDEF **stringlist_tailp = &stringlist;
668 /* Structure returned by create_definition */
669 typedef struct macrodef MACRODEF;
672 struct definition *defn;
677 static struct macrodef create_definition ();
680 enum sharp_token_type {
681 NO_SHARP_TOKEN, /* token not present */
683 SHARP_TOKEN = '#', /* token spelled with # only */
684 WHITE_SHARP_TOKEN, /* token spelled with # and white space */
686 PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
687 WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
690 /* Structure allocated for every #define. For a simple replacement
693 nargs = -1, the `pattern' list is null, and the expansion is just
694 the replacement text. Nargs = 0 means a functionlike macro with no args,
696 #define getchar() getc (stdin) .
697 When there are args, the expansion is the replacement text with the
698 args squashed out, and the reflist is a list describing how to
699 build the output from the input: e.g., "3 chars, then the 1st arg,
700 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
701 The chars here come from the expansion. Whatever is left of the
702 expansion after the last arg-occurrence is copied after that arg.
703 Note that the reflist can be arbitrarily long---
704 its length depends on the number of times the arguments appear in
705 the replacement text, not how many args there are. Example:
706 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
708 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
709 where (x, y) means (nchars, argno). */
711 typedef struct definition DEFINITION;
714 int length; /* length of expansion string */
715 int predefined; /* True if the macro was builtin or */
716 /* came from the command line */
718 int line; /* Line number of definition */
719 char *file; /* File of definition */
720 char rest_args; /* Nonzero if last arg. absorbs the rest */
722 struct reflist *next;
724 enum sharp_token_type stringify; /* set if a # operator before arg */
725 enum sharp_token_type raw_before; /* set if a ## operator before arg */
726 enum sharp_token_type raw_after; /* set if a ## operator after arg */
728 char rest_args; /* Nonzero if this arg. absorbs the rest */
729 int nchars; /* Number of literal chars to copy before
730 this arg occurrence. */
731 int argno; /* Number of arg to substitute (origin-0) */
734 /* Names of macro args, concatenated in reverse order
735 with comma-space between them.
736 The only use of this is that we warn on redefinition
737 if this differs between the old and new definitions. */
742 /* different kinds of things that can appear in the value field
743 of a hash node. Actually, this may be useless now. */
751 * special extension string that can be added to the last macro argument to
752 * allow it to absorb the "rest" of the arguments when expanded. Ex:
753 * #define wow(a, b...) process (b, a, b)
754 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
755 * { wow (one, two); } -> { process (two, one, two); }
756 * if this "rest_arg" is used with the concat token '##' and if it is not
757 * supplied then the token attached to with ## will not be outputted. Ex:
758 * #define wow (a, b...) process (b ## , a, ## b)
759 * { wow (1, 2); } -> { process (2, 1, 2); }
760 * { wow (one); } -> { process (one); {
762 static char rest_extension[] = "...";
763 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
765 /* The structure of a node in the hash table. The hash table
766 has entries for all tokens defined by #define commands (type T_MACRO),
767 plus some special tokens like __LINE__ (these each have their own
768 type, and the appropriate code is run when that type of node is seen.
769 It does not contain control words like "#define", which are recognized
770 by a separate piece of code. */
772 /* different flavors of hash nodes --- also used in keyword table */
774 T_DEFINE = 1, /* the `#define' keyword */
775 T_INCLUDE, /* the `#include' keyword */
776 T_INCLUDE_NEXT, /* the `#include_next' keyword */
777 T_IMPORT, /* the `#import' keyword */
778 T_IFDEF, /* the `#ifdef' keyword */
779 T_IFNDEF, /* the `#ifndef' keyword */
780 T_IF, /* the `#if' keyword */
781 T_ELSE, /* `#else' */
782 T_PRAGMA, /* `#pragma' */
783 T_ELIF, /* `#elif' */
784 T_UNDEF, /* `#undef' */
785 T_LINE, /* `#line' */
786 T_ERROR, /* `#error' */
787 T_WARNING, /* `#warning' */
788 T_ENDIF, /* `#endif' */
789 T_SCCS, /* `#sccs', used on system V. */
790 T_IDENT, /* `#ident', used on system V. */
791 T_ASSERT, /* `#assert', taken from system V. */
792 T_UNASSERT, /* `#unassert', taken from system V. */
793 T_SPECLINE, /* special symbol `__LINE__' */
794 T_DATE, /* `__DATE__' */
795 T_FILE, /* `__FILE__' */
796 T_BASE_FILE, /* `__BASE_FILE__' */
797 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
798 T_VERSION, /* `__VERSION__' */
799 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
800 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
801 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
802 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
803 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
804 T_TIME, /* `__TIME__' */
805 T_CONST, /* Constant value, used by `__STDC__' */
806 T_MACRO, /* macro defined by `#define' */
807 T_DISABLED, /* macro temporarily turned off for rescan */
808 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
809 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
810 T_UNUSED /* Used for something not defined. */
814 struct hashnode *next; /* double links for easy deletion */
815 struct hashnode *prev;
816 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
817 chain is kept, in case the node is the head
818 of the chain and gets deleted. */
819 enum node_type type; /* type of special token */
820 int length; /* length of token, for quick comparison */
821 U_CHAR *name; /* the actual name */
822 union hashval value; /* pointer to expansion, or whatever */
825 typedef struct hashnode HASHNODE;
827 /* Some definitions for the hash table. The hash function MUST be
828 computed as shown in hashf () below. That is because the rescan
829 loop computes the hash value `on the fly' for most tokens,
830 in order to avoid the overhead of a lot of procedure calls to
831 the hashf () function. Hashf () only exists for the sake of
832 politeness, for use when speed isn't so important. */
834 #define HASHSIZE 1403
835 static HASHNODE *hashtab[HASHSIZE];
836 #define HASHSTEP(old, c) ((old << 2) + c)
837 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
839 /* Symbols to predefine. */
841 #ifdef CPP_PREDEFINES
842 static char *predefs = CPP_PREDEFINES;
844 static char *predefs = "";
847 /* We let tm.h override the types used here, to handle trivial differences
848 such as the choice of unsigned int or long unsigned int for size_t.
849 When machines start needing nontrivial differences in the size type,
850 it would be best to do something here to figure out automatically
851 from other information what type to use. */
853 /* The string value for __SIZE_TYPE__. */
856 #define SIZE_TYPE "long unsigned int"
859 /* The string value for __PTRDIFF_TYPE__. */
862 #define PTRDIFF_TYPE "long int"
865 /* The string value for __WCHAR_TYPE__. */
868 #define WCHAR_TYPE "int"
870 char * wchar_type = WCHAR_TYPE;
873 /* The string value for __USER_LABEL_PREFIX__ */
875 #ifndef USER_LABEL_PREFIX
876 #define USER_LABEL_PREFIX ""
879 /* The string value for __REGISTER_PREFIX__ */
881 #ifndef REGISTER_PREFIX
882 #define REGISTER_PREFIX ""
885 /* In the definition of a #assert name, this structure forms
886 a list of the individual values asserted.
887 Each value is itself a list of "tokens".
888 These are strings that are compared by name. */
890 struct tokenlist_list {
891 struct tokenlist_list *next;
892 struct arglist *tokens;
895 struct assertion_hashnode {
896 struct assertion_hashnode *next; /* double links for easy deletion */
897 struct assertion_hashnode *prev;
898 /* also, a back pointer to this node's hash
899 chain is kept, in case the node is the head
900 of the chain and gets deleted. */
901 struct assertion_hashnode **bucket_hdr;
902 int length; /* length of token, for quick comparison */
903 U_CHAR *name; /* the actual name */
904 /* List of token-sequences. */
905 struct tokenlist_list *value;
908 typedef struct assertion_hashnode ASSERTION_HASHNODE;
910 /* Some definitions for the hash table. The hash function MUST be
911 computed as shown in hashf below. That is because the rescan
912 loop computes the hash value `on the fly' for most tokens,
913 in order to avoid the overhead of a lot of procedure calls to
914 the hashf function. hashf only exists for the sake of
915 politeness, for use when speed isn't so important. */
917 #define ASSERTION_HASHSIZE 37
918 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
920 /* Nonzero means inhibit macroexpansion of what seem to be
921 assertion tests, in rescan. For #if. */
922 static int assertions_flag;
924 /* `struct directive' defines one #-directive, including how to handle it. */
927 int length; /* Length of name */
928 int (*func)(); /* Function to handle directive */
929 char *name; /* Name of directive */
930 enum node_type type; /* Code which describes which directive. */
931 char angle_brackets; /* Nonzero => <...> is special. */
932 char traditional_comments; /* Nonzero: keep comments if -traditional. */
933 char pass_thru; /* Copy preprocessed directive to output file. */
936 /* Here is the actual list of #-directives, most-often-used first. */
938 static struct directive directive_table[] = {
939 { 6, do_define, "define", T_DEFINE, 0, 1},
940 { 2, do_if, "if", T_IF},
941 { 5, do_xifdef, "ifdef", T_IFDEF},
942 { 6, do_xifdef, "ifndef", T_IFNDEF},
943 { 5, do_endif, "endif", T_ENDIF},
944 { 4, do_else, "else", T_ELSE},
945 { 4, do_elif, "elif", T_ELIF},
946 { 4, do_line, "line", T_LINE},
947 { 7, do_include, "include", T_INCLUDE, 1},
948 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
949 { 6, do_include, "import", T_IMPORT, 1},
950 { 5, do_undef, "undef", T_UNDEF},
951 { 5, do_error, "error", T_ERROR},
952 { 7, do_warning, "warning", T_WARNING},
953 #ifdef SCCS_DIRECTIVE
954 { 4, do_sccs, "sccs", T_SCCS},
956 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
957 { 5, do_ident, "ident", T_IDENT},
958 { 6, do_assert, "assert", T_ASSERT},
959 { 8, do_unassert, "unassert", T_UNASSERT},
960 { -1, 0, "", T_UNUSED},
963 /* When a directive handler is called,
964 this points to the # (or the : of the %:) that started the directive. */
965 U_CHAR *directive_start;
967 /* table to tell if char can be part of a C identifier. */
968 U_CHAR is_idchar[256];
969 /* table to tell if char can be first char of a c identifier. */
970 U_CHAR is_idstart[256];
971 /* table to tell if c is horizontal space. */
972 U_CHAR is_hor_space[256];
973 /* table to tell if c is horizontal or vertical space. */
974 static U_CHAR is_space[256];
975 /* names of some characters */
976 static char *char_name[256];
978 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
979 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
981 static int errors = 0; /* Error counter for exit code */
983 /* Name of output file, for error messages. */
984 static char *out_fname;
986 /* Zero means dollar signs are punctuation.
987 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
988 This must be 0 for correct processing of this ANSI C program:
990 #define lose(b) foo (b)
993 static int dollars_in_ident;
994 #ifndef DOLLARS_IN_IDENTIFIERS
995 #define DOLLARS_IN_IDENTIFIERS 1
998 static FILE_BUF expand_to_temp_buffer ();
1000 static DEFINITION *collect_expansion ();
1002 /* Stack of conditionals currently in progress
1003 (including both successful and failing conditionals). */
1006 struct if_stack *next; /* for chaining to the next stack frame */
1007 char *fname; /* copied from input when frame is made */
1008 int lineno; /* similarly */
1009 int if_succeeded; /* true if a leg of this if-group
1010 has been passed through rescan */
1011 U_CHAR *control_macro; /* For #ifndef at start of file,
1012 this is the macro name tested. */
1013 enum node_type type; /* type of last directive seen in this group */
1015 typedef struct if_stack IF_STACK_FRAME;
1016 static IF_STACK_FRAME *if_stack = NULL;
1018 /* Buffer of -M output. */
1019 static char *deps_buffer;
1021 /* Number of bytes allocated in above. */
1022 static int deps_allocated_size;
1024 /* Number of bytes used. */
1025 static int deps_size;
1027 /* Number of bytes since the last newline. */
1028 static int deps_column;
1030 /* Nonzero means -I- has been seen,
1031 so don't look for #include "foo" the source-file directory. */
1032 static int ignore_srcdir;
1034 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1035 retrying if necessary. Return a negative value if an error occurs,
1036 otherwise return the actual number of bytes read,
1037 which must be LEN unless end-of-file was reached. */
1040 safe_read (desc, ptr, len)
1047 int nchars = read (desc, ptr, left);
1064 /* Write LEN bytes at PTR to descriptor DESC,
1065 retrying if necessary, and treating any real error as fatal. */
1068 safe_write (desc, ptr, len)
1074 int written = write (desc, ptr, len);
1081 pfatal_with_name (out_fname);
1099 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1100 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1101 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1102 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1103 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1105 /* Record the option used with each element of pend_assertions.
1106 This is preparation for supporting more than one option for making
1108 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1109 int inhibit_predefs = 0;
1110 int no_standard_includes = 0;
1111 int no_standard_cplusplus_includes = 0;
1112 int missing_newline = 0;
1114 /* Non-0 means don't output the preprocessed program. */
1115 int inhibit_output = 0;
1116 /* Non-0 means -v, so print the full set of include dirs. */
1119 /* File name which deps are being written to.
1120 This is 0 if deps are being written to stdout. */
1121 char *deps_file = 0;
1122 /* Fopen file mode to open deps_file with. */
1123 char *deps_mode = "a";
1124 /* Stream on which to print the dependency information. */
1125 FILE *deps_stream = 0;
1126 /* Target-name to write with the dependency information. */
1127 char *deps_target = 0;
1130 /* Get rid of any avoidable limit on stack size. */
1134 /* Set the stack limit huge so that alloca (particularly stringtab
1135 * in dbxread.c) does not fail. */
1136 getrlimit (RLIMIT_STACK, &rlim);
1137 rlim.rlim_cur = rlim.rlim_max;
1138 setrlimit (RLIMIT_STACK, &rlim);
1140 #endif /* RLIMIT_STACK defined */
1143 signal (SIGPIPE, pipe_closed);
1146 p = argv[0] + strlen (argv[0]);
1147 while (p != argv[0] && p[-1] != '/'
1148 #ifdef DIR_SEPARATOR
1149 && p[-1] != DIR_SEPARATOR
1157 /* Remove directories from PROGNAME. */
1160 if ((p = rindex (s, ':')) != 0) s = p + 1; /* skip device */
1161 if ((p = rindex (s, ']')) != 0) s = p + 1; /* skip directory */
1162 if ((p = rindex (s, '>')) != 0) s = p + 1; /* alternate (int'n'l) dir */
1163 s = progname = savestring (s);
1164 if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
1165 if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
1166 && (p[1] == 'e' || p[1] == 'E')
1167 && (p[2] == 'x' || p[2] == 'X')
1168 && (p[3] == 'e' || p[3] == 'E')
1177 /* Initialize is_idchar to allow $. */
1178 dollars_in_ident = 1;
1179 initialize_char_syntax ();
1180 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1182 no_line_commands = 0;
1184 dump_macros = dump_none;
1187 cplusplus_comments = 0;
1189 bzero ((char *) pend_files, argc * sizeof (char *));
1190 bzero ((char *) pend_defs, argc * sizeof (char *));
1191 bzero ((char *) pend_undefs, argc * sizeof (char *));
1192 bzero ((char *) pend_assertions, argc * sizeof (char *));
1193 bzero ((char *) pend_includes, argc * sizeof (char *));
1195 /* Process switches and find input file name. */
1197 for (i = 1; i < argc; i++) {
1198 if (argv[i][0] != '-') {
1199 if (out_fname != NULL)
1200 fatal ("Usage: %s [switches] input output", argv[0]);
1201 else if (in_fname != NULL)
1202 out_fname = argv[i];
1206 switch (argv[i][1]) {
1209 if (!strcmp (argv[i], "-include")) {
1211 fatal ("Filename missing after `-include' option");
1213 pend_includes[i] = argv[i+1], i++;
1215 if (!strcmp (argv[i], "-imacros")) {
1217 fatal ("Filename missing after `-imacros' option");
1219 pend_files[i] = argv[i+1], i++;
1221 if (!strcmp (argv[i], "-iprefix")) {
1223 fatal ("Filename missing after `-iprefix' option");
1225 include_prefix = argv[++i];
1227 if (!strcmp (argv[i], "-ifoutput")) {
1228 output_conditionals = 1;
1230 if (!strcmp (argv[i], "-isystem")) {
1231 struct file_name_list *dirtmp;
1234 fatal ("Filename missing after `-isystem' option");
1236 dirtmp = (struct file_name_list *)
1237 xmalloc (sizeof (struct file_name_list));
1239 dirtmp->control_macro = 0;
1240 dirtmp->c_system_include_path = 1;
1241 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1]) + 1);
1242 strcpy (dirtmp->fname, argv[++i]);
1243 dirtmp->got_name_map = 0;
1245 if (before_system == 0)
1246 before_system = dirtmp;
1248 last_before_system->next = dirtmp;
1249 last_before_system = dirtmp; /* Tail follows the last one */
1251 /* Add directory to end of path for includes,
1252 with the default prefix at the front of its name. */
1253 if (!strcmp (argv[i], "-iwithprefix")) {
1254 struct file_name_list *dirtmp;
1257 if (include_prefix != 0)
1258 prefix = include_prefix;
1260 prefix = savestring (GCC_INCLUDE_DIR);
1261 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1262 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1263 prefix[strlen (prefix) - 7] = 0;
1266 dirtmp = (struct file_name_list *)
1267 xmalloc (sizeof (struct file_name_list));
1268 dirtmp->next = 0; /* New one goes on the end */
1269 dirtmp->control_macro = 0;
1270 dirtmp->c_system_include_path = 0;
1272 fatal ("Directory name missing after `-iwithprefix' option");
1274 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1275 + strlen (prefix) + 1);
1276 strcpy (dirtmp->fname, prefix);
1277 strcat (dirtmp->fname, argv[++i]);
1278 dirtmp->got_name_map = 0;
1280 if (after_include == 0)
1281 after_include = dirtmp;
1283 last_after_include->next = dirtmp;
1284 last_after_include = dirtmp; /* Tail follows the last one */
1286 /* Add directory to main path for includes,
1287 with the default prefix at the front of its name. */
1288 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1289 struct file_name_list *dirtmp;
1292 if (include_prefix != 0)
1293 prefix = include_prefix;
1295 prefix = savestring (GCC_INCLUDE_DIR);
1296 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1297 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1298 prefix[strlen (prefix) - 7] = 0;
1301 dirtmp = (struct file_name_list *)
1302 xmalloc (sizeof (struct file_name_list));
1303 dirtmp->next = 0; /* New one goes on the end */
1304 dirtmp->control_macro = 0;
1305 dirtmp->c_system_include_path = 0;
1307 fatal ("Directory name missing after `-iwithprefixbefore' option");
1309 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1310 + strlen (prefix) + 1);
1311 strcpy (dirtmp->fname, prefix);
1312 strcat (dirtmp->fname, argv[++i]);
1313 dirtmp->got_name_map = 0;
1315 append_include_chain (dirtmp, dirtmp);
1317 /* Add directory to end of path for includes. */
1318 if (!strcmp (argv[i], "-idirafter")) {
1319 struct file_name_list *dirtmp;
1321 dirtmp = (struct file_name_list *)
1322 xmalloc (sizeof (struct file_name_list));
1323 dirtmp->next = 0; /* New one goes on the end */
1324 dirtmp->control_macro = 0;
1325 dirtmp->c_system_include_path = 0;
1327 fatal ("Directory name missing after `-idirafter' option");
1329 dirtmp->fname = argv[++i];
1330 dirtmp->got_name_map = 0;
1332 if (after_include == 0)
1333 after_include = dirtmp;
1335 last_after_include->next = dirtmp;
1336 last_after_include = dirtmp; /* Tail follows the last one */
1341 if (out_fname != NULL)
1342 fatal ("Output filename specified twice");
1344 fatal ("Filename missing after -o option");
1345 out_fname = argv[++i];
1346 if (!strcmp (out_fname, "-"))
1351 if (!strcmp (argv[i], "-pedantic"))
1353 else if (!strcmp (argv[i], "-pedantic-errors")) {
1355 pedantic_errors = 1;
1356 } else if (!strcmp (argv[i], "-pcp")) {
1359 fatal ("Filename missing after -pcp option");
1360 pcp_fname = argv[++i];
1362 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1363 ? fopen (pcp_fname, "w")
1364 : fdopen (dup (fileno (stdout)), "w"));
1365 if (pcp_outfile == 0)
1366 pfatal_with_name (pcp_fname);
1372 if (!strcmp (argv[i], "-traditional")) {
1374 if (dollars_in_ident > 0)
1375 dollars_in_ident = 1;
1376 } else if (!strcmp (argv[i], "-trigraphs")) {
1382 if (! strcmp (argv[i], "-lang-c"))
1383 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1384 if (! strcmp (argv[i], "-lang-c++"))
1385 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1386 if (! strcmp (argv[i], "-lang-c-c++-comments"))
1387 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1388 if (! strcmp (argv[i], "-lang-objc"))
1389 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1390 if (! strcmp (argv[i], "-lang-objc++"))
1391 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1392 if (! strcmp (argv[i], "-lang-asm"))
1394 if (! strcmp (argv[i], "-lint"))
1399 cplusplus = 1, cplusplus_comments = 1;
1403 inhibit_warnings = 1;
1407 if (!strcmp (argv[i], "-Wtrigraphs"))
1409 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1411 else if (!strcmp (argv[i], "-Wcomment"))
1413 else if (!strcmp (argv[i], "-Wno-comment"))
1415 else if (!strcmp (argv[i], "-Wcomments"))
1417 else if (!strcmp (argv[i], "-Wno-comments"))
1419 else if (!strcmp (argv[i], "-Wtraditional"))
1421 else if (!strcmp (argv[i], "-Wno-traditional"))
1423 else if (!strcmp (argv[i], "-Wimport"))
1425 else if (!strcmp (argv[i], "-Wno-import"))
1427 else if (!strcmp (argv[i], "-Werror"))
1428 warnings_are_errors = 1;
1429 else if (!strcmp (argv[i], "-Wno-error"))
1430 warnings_are_errors = 0;
1431 else if (!strcmp (argv[i], "-Wall"))
1439 /* The style of the choices here is a bit mixed.
1440 The chosen scheme is a hybrid of keeping all options in one string
1441 and specifying each option in a separate argument:
1442 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1443 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1444 -M[M][G][D file]. This is awkward to handle in specs, and is not
1446 /* ??? -MG must be specified in addition to one of -M or -MM.
1447 This can be relaxed in the future without breaking anything.
1448 The converse isn't true. */
1450 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1451 if (!strcmp (argv[i], "-MG"))
1453 print_deps_missing_files = 1;
1456 if (!strcmp (argv[i], "-M"))
1458 else if (!strcmp (argv[i], "-MM"))
1460 else if (!strcmp (argv[i], "-MD"))
1462 else if (!strcmp (argv[i], "-MMD"))
1464 /* For -MD and -MMD options, write deps on file named by next arg. */
1465 if (!strcmp (argv[i], "-MD")
1466 || !strcmp (argv[i], "-MMD")) {
1468 fatal ("Filename missing after %s option", argv[i]);
1470 deps_file = argv[i];
1473 /* For -M and -MM, write deps on standard output
1474 and suppress the usual output. */
1475 deps_stream = stdout;
1482 char *p = argv[i] + 2;
1485 /* Arg to -d specifies what parts of macros to dump */
1488 dump_macros = dump_only;
1492 dump_macros = dump_names;
1495 dump_macros = dump_definitions;
1503 if (argv[i][2] == '3')
1508 fprintf (stderr, "GNU CPP version %s", version_string);
1509 #ifdef TARGET_VERSION
1512 fprintf (stderr, "\n");
1517 print_include_names = 1;
1521 if (argv[i][2] != 0)
1522 pend_defs[i] = argv[i] + 2;
1523 else if (i + 1 == argc)
1524 fatal ("Macro name missing after -D option");
1526 i++, pend_defs[i] = argv[i];
1533 if (argv[i][2] != 0)
1535 else if (i + 1 == argc)
1536 fatal ("Assertion missing after -A option");
1540 if (!strcmp (p, "-")) {
1541 /* -A- eliminates all predefined macros and assertions.
1542 Let's include also any that were specified earlier
1543 on the command line. That way we can get rid of any
1544 that were passed automatically in from GCC. */
1546 inhibit_predefs = 1;
1547 for (j = 0; j < i; j++)
1548 pend_defs[j] = pend_assertions[j] = 0;
1550 pend_assertions[i] = p;
1551 pend_assertion_options[i] = "-A";
1556 case 'U': /* JF #undef something */
1557 if (argv[i][2] != 0)
1558 pend_undefs[i] = argv[i] + 2;
1559 else if (i + 1 == argc)
1560 fatal ("Macro name missing after -U option");
1562 pend_undefs[i] = argv[i+1], i++;
1566 put_out_comments = 1;
1569 case 'E': /* -E comes from cc -E; ignore it. */
1573 no_line_commands = 1;
1576 case '$': /* Don't include $ in identifiers. */
1577 dollars_in_ident = 0;
1580 case 'I': /* Add directory to path for includes. */
1582 struct file_name_list *dirtmp;
1584 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1586 /* Don't use any preceding -I directories for #include <...>. */
1587 first_bracket_include = 0;
1590 dirtmp = (struct file_name_list *)
1591 xmalloc (sizeof (struct file_name_list));
1592 dirtmp->next = 0; /* New one goes on the end */
1593 dirtmp->control_macro = 0;
1594 dirtmp->c_system_include_path = 0;
1595 if (argv[i][2] != 0)
1596 dirtmp->fname = argv[i] + 2;
1597 else if (i + 1 == argc)
1598 fatal ("Directory name missing after -I option");
1600 dirtmp->fname = argv[++i];
1601 dirtmp->got_name_map = 0;
1602 append_include_chain (dirtmp, dirtmp);
1608 if (!strcmp (argv[i], "-nostdinc"))
1609 /* -nostdinc causes no default include directories.
1610 You must specify all include-file directories with -I. */
1611 no_standard_includes = 1;
1612 else if (!strcmp (argv[i], "-nostdinc++"))
1613 /* -nostdinc++ causes no default C++-specific include directories. */
1614 no_standard_cplusplus_includes = 1;
1615 else if (!strcmp (argv[i], "-noprecomp"))
1620 /* Sun compiler passes undocumented switch "-undef".
1621 Let's assume it means to inhibit the predefined symbols. */
1622 inhibit_predefs = 1;
1625 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1626 if (in_fname == NULL) {
1629 } else if (out_fname == NULL) {
1632 } /* else fall through into error */
1635 fatal ("Invalid option `%s'", argv[i]);
1640 /* Add dirs from CPATH after dirs from -I. */
1641 /* There seems to be confusion about what CPATH should do,
1642 so for the moment it is not documented. */
1643 /* Some people say that CPATH should replace the standard include dirs,
1644 but that seems pointless: it comes before them, so it overrides them
1646 p = (char *) getenv ("CPATH");
1647 if (p != 0 && ! no_standard_includes)
1650 /* Now that dollars_in_ident is known, initialize is_idchar. */
1651 initialize_char_syntax ();
1653 /* Initialize output buffer */
1655 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1656 outbuf.bufp = outbuf.buf;
1657 outbuf.length = OUTBUF_SIZE;
1659 /* Do partial setup of input buffer for the sake of generating
1660 early #line directives (when -g is in effect). */
1662 fp = &instack[++indepth];
1663 if (in_fname == NULL)
1665 fp->nominal_fname = fp->fname = in_fname;
1668 /* In C++, wchar_t is a distinct basic type, and we can expect
1669 __wchar_t to be defined by cc1plus. */
1671 wchar_type = "__wchar_t";
1673 /* Install __LINE__, etc. Must follow initialize_char_syntax
1674 and option processing. */
1675 initialize_builtins (fp, &outbuf);
1677 /* Do standard #defines and assertions
1678 that identify system and machine type. */
1680 if (!inhibit_predefs) {
1681 char *p = (char *) alloca (strlen (predefs) + 1);
1682 strcpy (p, predefs);
1685 while (*p == ' ' || *p == '\t')
1687 /* Handle -D options. */
1688 if (p[0] == '-' && p[1] == 'D') {
1690 while (*p && *p != ' ' && *p != '\t')
1695 output_line_command (fp, &outbuf, 0, same_file);
1696 make_definition (q, &outbuf);
1697 while (*p == ' ' || *p == '\t')
1699 } else if (p[0] == '-' && p[1] == 'A') {
1700 /* Handle -A options (assertions). */
1709 past_name = assertion;
1710 /* Locate end of name. */
1711 while (*past_name && *past_name != ' '
1712 && *past_name != '\t' && *past_name != '(')
1714 /* Locate `(' at start of value. */
1716 while (*value && (*value == ' ' || *value == '\t'))
1718 if (*value++ != '(')
1720 while (*value && (*value == ' ' || *value == '\t'))
1723 /* Locate end of value. */
1724 while (*past_value && *past_value != ' '
1725 && *past_value != '\t' && *past_value != ')')
1727 termination = past_value;
1728 while (*termination && (*termination == ' ' || *termination == '\t'))
1730 if (*termination++ != ')')
1732 if (*termination && *termination != ' ' && *termination != '\t')
1734 /* Temporarily null-terminate the value. */
1735 save_char = *termination;
1736 *termination = '\0';
1737 /* Install the assertion. */
1738 make_assertion ("-A", assertion);
1739 *termination = (char) save_char;
1741 while (*p == ' ' || *p == '\t')
1749 /* Now handle the command line options. */
1751 /* Do -U's, -D's and -A's in the order they were seen. */
1752 for (i = 1; i < argc; i++) {
1753 if (pend_undefs[i]) {
1755 output_line_command (fp, &outbuf, 0, same_file);
1756 make_undef (pend_undefs[i], &outbuf);
1760 output_line_command (fp, &outbuf, 0, same_file);
1761 make_definition (pend_defs[i], &outbuf);
1763 if (pend_assertions[i])
1764 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1767 done_initializing = 1;
1769 { /* read the appropriate environment variable and if it exists
1770 replace include_defaults with the listed path. */
1772 switch ((objc << 1) + cplusplus)
1775 epath = getenv ("C_INCLUDE_PATH");
1778 epath = getenv ("CPLUS_INCLUDE_PATH");
1781 epath = getenv ("OBJC_INCLUDE_PATH");
1784 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1787 /* If the environment var for this language is set,
1788 add to the default list of include directories. */
1790 char *nstore = (char *) alloca (strlen (epath) + 2);
1792 char *startp, *endp;
1794 for (num_dirs = 1, startp = epath; *startp; startp++)
1795 if (*startp == PATH_SEPARATOR)
1798 = (struct default_include *) xmalloc ((num_dirs
1799 * sizeof (struct default_include))
1800 + sizeof (include_defaults_array));
1801 startp = endp = epath;
1804 /* Handle cases like c:/usr/lib:d:/gcc/lib */
1805 if ((*endp == PATH_SEPARATOR
1806 #if 0 /* Obsolete, now that we use semicolons as the path separator. */
1808 && (endp-startp != 1 || !isalpha (*startp))
1813 strncpy (nstore, startp, endp-startp);
1815 strcpy (nstore, ".");
1817 nstore[endp-startp] = '\0';
1819 include_defaults[num_dirs].fname = savestring (nstore);
1820 include_defaults[num_dirs].cplusplus = cplusplus;
1821 include_defaults[num_dirs].cxx_aware = 1;
1825 endp = startp = endp + 1;
1829 /* Put the usual defaults back in at the end. */
1830 bcopy ((char *) include_defaults_array,
1831 (char *) &include_defaults[num_dirs],
1832 sizeof (include_defaults_array));
1836 append_include_chain (before_system, last_before_system);
1837 first_system_include = before_system;
1839 /* Unless -fnostdinc,
1840 tack on the standard include file dirs to the specified list */
1841 if (!no_standard_includes) {
1842 struct default_include *p = include_defaults;
1843 char *specd_prefix = include_prefix;
1844 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1845 int default_len = 0;
1846 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1847 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1848 default_len = strlen (default_prefix) - 7;
1849 default_prefix[default_len] = 0;
1851 /* Search "translated" versions of GNU directories.
1852 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1853 if (specd_prefix != 0 && default_len != 0)
1854 for (p = include_defaults; p->fname; p++) {
1855 /* Some standard dirs are only for C++. */
1856 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1857 /* Does this dir start with the prefix? */
1858 if (!strncmp (p->fname, default_prefix, default_len)) {
1859 /* Yes; change prefix and add to search list. */
1860 struct file_name_list *new
1861 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1862 int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
1863 char *str = (char *) xmalloc (this_len + 1);
1864 strcpy (str, specd_prefix);
1865 strcat (str, p->fname + default_len);
1867 new->control_macro = 0;
1868 new->c_system_include_path = !p->cxx_aware;
1869 new->got_name_map = 0;
1870 append_include_chain (new, new);
1871 if (first_system_include == 0)
1872 first_system_include = new;
1876 /* Search ordinary names for GNU include directories. */
1877 for (p = include_defaults; p->fname; p++) {
1878 /* Some standard dirs are only for C++. */
1879 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1880 struct file_name_list *new
1881 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1882 new->control_macro = 0;
1883 new->c_system_include_path = !p->cxx_aware;
1884 new->fname = p->fname;
1885 new->got_name_map = 0;
1886 append_include_chain (new, new);
1887 if (first_system_include == 0)
1888 first_system_include = new;
1893 /* Tack the after_include chain at the end of the include chain. */
1894 append_include_chain (after_include, last_after_include);
1895 if (first_system_include == 0)
1896 first_system_include = after_include;
1898 /* With -v, print the list of dirs to search. */
1900 struct file_name_list *p;
1901 fprintf (stderr, "#include \"...\" search starts here:\n");
1902 for (p = include; p; p = p->next) {
1903 if (p == first_bracket_include)
1904 fprintf (stderr, "#include <...> search starts here:\n");
1905 fprintf (stderr, " %s\n", p->fname);
1907 fprintf (stderr, "End of search list.\n");
1910 /* Scan the -imacros files before the main input.
1911 Much like #including them, but with no_output set
1912 so that only their macro definitions matter. */
1914 no_output++; no_record_file++;
1915 for (i = 1; i < argc; i++)
1916 if (pend_files[i]) {
1917 int fd = open (pend_files[i], O_RDONLY, 0666);
1919 perror_with_name (pend_files[i]);
1920 return FAILURE_EXIT_CODE;
1922 finclude (fd, pend_files[i], &outbuf, 0, NULL_PTR);
1924 no_output--; no_record_file--;
1926 /* Copy the entire contents of the main input file into
1927 the stacked input buffer previously allocated for it. */
1929 /* JF check for stdin */
1930 if (in_fname == NULL || *in_fname == 0) {
1933 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
1936 /* -MG doesn't select the form of output and must be specified with one of
1937 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
1938 inhibit compilation. */
1939 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
1940 fatal ("-MG must be specified with one of -M or -MM");
1942 /* Either of two environment variables can specify output of deps.
1943 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1944 where OUTPUT_FILE is the file to write deps info to
1945 and DEPS_TARGET is the target to mention in the deps. */
1948 && (getenv ("SUNPRO_DEPENDENCIES") != 0
1949 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
1950 char *spec = getenv ("DEPENDENCIES_OUTPUT");
1955 spec = getenv ("SUNPRO_DEPENDENCIES");
1962 /* Find the space before the DEPS_TARGET, if there is one. */
1963 /* This should use index. (mrs) */
1964 while (*s != 0 && *s != ' ') s++;
1966 deps_target = s + 1;
1967 output_file = (char *) xmalloc (s - spec + 1);
1968 bcopy (spec, output_file, s - spec);
1969 output_file[s - spec] = 0;
1976 deps_file = output_file;
1980 /* For -M, print the expected object file name
1981 as the target of this Make-rule. */
1983 deps_allocated_size = 200;
1984 deps_buffer = (char *) xmalloc (deps_allocated_size);
1990 deps_output (deps_target, ':');
1991 } else if (*in_fname == 0) {
1992 deps_output ("-", ':');
1997 /* Discard all directory prefixes from filename. */
1998 if ((q = rindex (in_fname, '/')) != NULL
1999 #ifdef DIR_SEPARATOR
2000 && (q = rindex (in_fname, DIR_SEPARATOR)) != NULL
2007 /* Copy remainder to mungable area. */
2008 p = (char *) alloca (strlen(q) + 8);
2011 /* Output P, but remove known suffixes. */
2015 && p[len - 2] == '.'
2016 && index("cCsSm", p[len - 1]))
2019 && p[len - 3] == '.'
2020 && p[len - 2] == 'c'
2021 && p[len - 1] == 'c')
2024 && p[len - 4] == '.'
2025 && p[len - 3] == 'c'
2026 && p[len - 2] == 'x'
2027 && p[len - 1] == 'x')
2030 && p[len - 4] == '.'
2031 && p[len - 3] == 'c'
2032 && p[len - 2] == 'p'
2033 && p[len - 1] == 'p')
2036 /* Supply our own suffix. */
2043 deps_output (p, ':');
2044 deps_output (in_fname, ' ');
2048 file_size_and_mode (f, &st_mode, &st_size);
2049 fp->nominal_fname = fp->fname = in_fname;
2051 fp->system_header_p = 0;
2052 /* JF all this is mine about reading pipes and ttys */
2053 if (! S_ISREG (st_mode)) {
2054 /* Read input from a file that is not a normal disk file.
2055 We cannot preallocate a buffer with the correct size,
2056 so we must read in the file a piece at the time and make it bigger. */
2063 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2065 cnt = safe_read (f, fp->buf + size, bsize - size);
2066 if (cnt < 0) goto perror; /* error! */
2068 if (size != bsize) break; /* End of file */
2070 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2074 /* Read a file whose size we can determine in advance.
2075 For the sake of VMS, st_size is just an upper bound. */
2076 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
2077 fp->length = safe_read (f, fp->buf, st_size);
2078 if (fp->length < 0) goto perror;
2081 fp->if_stack = if_stack;
2083 /* Make sure data ends with a newline. And put a null after it. */
2085 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2086 /* Backslash-newline at end is not good enough. */
2087 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2088 fp->buf[fp->length++] = '\n';
2089 missing_newline = 1;
2091 fp->buf[fp->length] = '\0';
2093 /* Unless inhibited, convert trigraphs in the input. */
2098 /* Now that we know the input file is valid, open the output. */
2100 if (!out_fname || !strcmp (out_fname, ""))
2101 out_fname = "stdout";
2102 else if (! freopen (out_fname, "w", stdout))
2103 pfatal_with_name (out_fname);
2105 output_line_command (fp, &outbuf, 0, same_file);
2107 /* Scan the -include files before the main input. */
2110 for (i = 1; i < argc; i++)
2111 if (pend_includes[i]) {
2112 int fd = open (pend_includes[i], O_RDONLY, 0666);
2114 perror_with_name (pend_includes[i]);
2115 return FAILURE_EXIT_CODE;
2117 finclude (fd, pend_includes[i], &outbuf, 0, NULL_PTR);
2121 /* Scan the input, processing macros and directives. */
2123 rescan (&outbuf, 0);
2125 if (missing_newline)
2128 if (pedantic && missing_newline)
2129 pedwarn ("file does not end in newline");
2131 /* Now we have processed the entire input
2132 Write whichever kind of output has been requested. */
2134 if (dump_macros == dump_only)
2136 else if (! inhibit_output) {
2141 /* Don't actually write the deps file if compilation has failed. */
2143 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2144 pfatal_with_name (deps_file);
2145 fputs (deps_buffer, deps_stream);
2146 putc ('\n', deps_stream);
2148 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2149 fatal ("I/O error on output");
2154 if (pcp_outfile && pcp_outfile != stdout
2155 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2156 fatal ("I/O error on `-pcp' output");
2158 if (ferror (stdout) || fclose (stdout) != 0)
2159 fatal ("I/O error on output");
2162 exit (FAILURE_EXIT_CODE);
2163 exit (SUCCESS_EXIT_CODE);
2166 pfatal_with_name (in_fname);
2170 /* Given a colon-separated list of file names PATH,
2171 add all the names to the search path for include files. */
2185 struct file_name_list *dirtmp;
2187 /* Find the end of this name. */
2188 while (*q != 0 && *q != PATH_SEPARATOR) q++;
2190 /* An empty name in the path stands for the current directory. */
2191 name = (char *) xmalloc (2);
2195 /* Otherwise use the directory that is named. */
2196 name = (char *) xmalloc (q - p + 1);
2197 bcopy (p, name, q - p);
2201 dirtmp = (struct file_name_list *)
2202 xmalloc (sizeof (struct file_name_list));
2203 dirtmp->next = 0; /* New one goes on the end */
2204 dirtmp->control_macro = 0;
2205 dirtmp->c_system_include_path = 0;
2206 dirtmp->fname = name;
2207 dirtmp->got_name_map = 0;
2208 append_include_chain (dirtmp, dirtmp);
2210 /* Advance past this name. */
2214 /* Skip the colon. */
2219 /* Return the address of the first character in S that equals C.
2220 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2221 Return 0 if there is no such character. Assume that C itself is not '\0'.
2222 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2223 but unfortunately memchr isn't autoconfigured yet. */
2232 char *q = index (s, c);
2234 return (U_CHAR *) q;
2246 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2247 before main CCCP processing. Name `pcp' is also in honor of the
2248 drugs the trigraph designers must have been on.
2250 Using an extra pass through the buffer takes a little extra time,
2251 but is infinitely less hairy than trying to handle trigraphs inside
2252 strings, etc. everywhere, and also makes sure that trigraphs are
2253 only translated in the top level of processing. */
2259 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2262 fptr = bptr = sptr = buf->buf;
2263 lptr = fptr + buf->length;
2264 while ((sptr = (U_CHAR *) index0 (sptr, '?', lptr - sptr)) != NULL) {
2301 len = sptr - fptr - 2;
2303 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2304 C, this will be memmove (). */
2305 if (bptr != fptr && len > 0)
2306 bcopy ((char *) fptr, (char *) bptr, len);
2312 len = buf->length - (fptr - buf->buf);
2313 if (bptr != fptr && len > 0)
2314 bcopy ((char *) fptr, (char *) bptr, len);
2315 buf->length -= fptr - bptr;
2316 buf->buf[buf->length] = '\0';
2317 if (warn_trigraphs && fptr != bptr)
2318 warning ("%d trigraph(s) encountered", (fptr - bptr) / 2);
2321 /* Move all backslash-newline pairs out of embarrassing places.
2322 Exchange all such pairs following BP
2323 with any potentially-embarrassing characters that follow them.
2324 Potentially-embarrassing characters are / and *
2325 (because a backslash-newline inside a comment delimiter
2326 would cause it not to be recognized). */
2332 register U_CHAR *p = bp;
2334 /* First count the backslash-newline pairs here. */
2336 while (p[0] == '\\' && p[1] == '\n')
2339 /* What follows the backslash-newlines is not embarrassing. */
2341 if (*p != '/' && *p != '*')
2344 /* Copy all potentially embarrassing characters
2345 that follow the backslash-newline pairs
2346 down to where the pairs originally started. */
2348 while (*p == '*' || *p == '/')
2351 /* Now write the same number of pairs after the embarrassing chars. */
2358 /* Like newline_fix but for use within a directive-name.
2359 Move any backslash-newlines up past any following symbol constituents. */
2362 name_newline_fix (bp)
2365 register U_CHAR *p = bp;
2367 /* First count the backslash-newline pairs here. */
2368 while (p[0] == '\\' && p[1] == '\n')
2371 /* What follows the backslash-newlines is not embarrassing. */
2376 /* Copy all potentially embarrassing characters
2377 that follow the backslash-newline pairs
2378 down to where the pairs originally started. */
2380 while (is_idchar[*p])
2383 /* Now write the same number of pairs after the embarrassing chars. */
2390 /* Look for lint commands in comments.
2392 When we come in here, ibp points into a comment. Limit is as one expects.
2393 scan within the comment -- it should start, after lwsp, with a lint command.
2394 If so that command is returned as a (constant) string.
2396 Upon return, any arg will be pointed to with argstart and will be
2397 arglen long. Note that we don't parse that arg since it will just
2398 be printed out again.
2402 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2403 register U_CHAR *ibp;
2404 register U_CHAR *limit;
2405 U_CHAR **argstart; /* point to command arg */
2406 int *arglen, *cmdlen; /* how long they are */
2409 register U_CHAR *numptr; /* temp for arg parsing */
2413 SKIP_WHITE_SPACE (ibp);
2415 if (ibp >= limit) return NULL;
2417 linsize = limit - ibp;
2419 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2420 if ((linsize >= 10) && !strncmp (ibp, "NOTREACHED", 10)) {
2422 return "NOTREACHED";
2424 if ((linsize >= 8) && !strncmp (ibp, "ARGSUSED", 8)) {
2428 if ((linsize >= 11) && !strncmp (ibp, "LINTLIBRARY", 11)) {
2430 return "LINTLIBRARY";
2432 if ((linsize >= 7) && !strncmp (ibp, "VARARGS", 7)) {
2434 ibp += 7; linsize -= 7;
2435 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2437 /* OK, read a number */
2438 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2440 *arglen = numptr - *argstart;
2447 * The main loop of the program.
2449 * Read characters from the input stack, transferring them to the
2452 * Macros are expanded and push levels on the input stack.
2453 * At the end of such a level it is popped off and we keep reading.
2454 * At the end of any other kind of level, we return.
2455 * #-directives are handled, except within macros.
2457 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2458 * and insert them when appropriate. This is set while scanning macro
2459 * arguments before substitution. It is zero when scanning for final output.
2460 * There are three types of Newline markers:
2461 * * Newline - follows a macro name that was not expanded
2462 * because it appeared inside an expansion of the same macro.
2463 * This marker prevents future expansion of that identifier.
2464 * When the input is rescanned into the final output, these are deleted.
2465 * These are also deleted by ## concatenation.
2466 * * Newline Space (or Newline and any other whitespace character)
2467 * stands for a place that tokens must be separated or whitespace
2468 * is otherwise desirable, but where the ANSI standard specifies there
2469 * is no whitespace. This marker turns into a Space (or whichever other
2470 * whitespace char appears in the marker) in the final output,
2471 * but it turns into nothing in an argument that is stringified with #.
2472 * Such stringified arguments are the only place where the ANSI standard
2473 * specifies with precision that whitespace may not appear.
2475 * During this function, IP->bufp is kept cached in IBP for speed of access.
2476 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2477 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2478 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2479 * explicitly, and before RECACHE, since RECACHE uses OBP.
2483 rescan (op, output_marks)
2487 /* Character being scanned in main loop. */
2490 /* Length of pending accumulated identifier. */
2491 register int ident_length = 0;
2493 /* Hash code of pending accumulated identifier. */
2494 register int hash = 0;
2496 /* Current input level (&instack[indepth]). */
2499 /* Pointer for scanning input. */
2500 register U_CHAR *ibp;
2502 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2503 register U_CHAR *limit;
2505 /* Pointer for storing output. */
2506 register U_CHAR *obp;
2508 /* REDO_CHAR is nonzero if we are processing an identifier
2509 after backing up over the terminating character.
2510 Sometimes we process an identifier without backing up over
2511 the terminating character, if the terminating character
2512 is not special. Backing up is done so that the terminating character
2513 will be dispatched on again once the identifier is dealt with. */
2516 /* 1 if within an identifier inside of which a concatenation
2517 marker (Newline -) has been seen. */
2518 int concatenated = 0;
2520 /* While scanning a comment or a string constant,
2521 this records the line it started on, for error messages. */
2524 /* Record position of last `real' newline. */
2525 U_CHAR *beg_of_line;
2527 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2530 do { ip->macro->type = T_MACRO; \
2531 if (ip->free_ptr) free (ip->free_ptr); \
2532 --indepth; } while (0)
2534 /* Reload `rescan's local variables that describe the current
2535 level of the input stack. */
2538 do { ip = &instack[indepth]; \
2540 limit = ip->buf + ip->length; \
2542 check_expand (op, limit - ibp); \
2544 obp = op->bufp; } while (0)
2546 if (no_output && instack[indepth].fname != 0)
2547 skip_if_group (&instack[indepth], 1, NULL);
2554 /* Our caller must always put a null after the end of
2555 the input at each input stack level. */
2565 if (*ibp == '\n' && !ip->macro) {
2566 /* At the top level, always merge lines ending with backslash-newline,
2567 even in middle of identifier. But do not merge lines in a macro,
2568 since backslash might be followed by a newline-space marker. */
2571 --obp; /* remove backslash from obuf */
2574 /* If ANSI, backslash is just another character outside a string. */
2577 /* Otherwise, backslash suppresses specialness of following char,
2578 so copy it here to prevent the switch from seeing it.
2579 But first get any pending identifier processed. */
2580 if (ident_length > 0)
2587 if (ident_length || ip->macro || traditional)
2589 if (ip->fname == 0 && beg_of_line == ip->buf)
2591 while (*ibp == '\\' && ibp[1] == '\n') {
2597 /* Treat this %: digraph as if it were #. */
2601 if (assertions_flag) {
2602 /* Copy #foo (bar lose) without macro expansion. */
2603 obp[-1] = '#'; /* In case it was '%'. */
2604 SKIP_WHITE_SPACE (ibp);
2605 while (is_idchar[*ibp])
2607 SKIP_WHITE_SPACE (ibp);
2610 skip_paren_group (ip);
2611 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2612 obp += ip->bufp - ibp;
2617 /* If this is expanding a macro definition, don't recognize
2618 preprocessor directives. */
2621 /* If this is expand_into_temp_buffer, recognize them
2622 only after an actual newline at this level,
2623 not at the beginning of the input level. */
2624 if (ip->fname == 0 && beg_of_line == ip->buf)
2630 /* # keyword: a # must be first nonblank char on the line */
2631 if (beg_of_line == 0)
2636 /* Scan from start of line, skipping whitespace, comments
2637 and backslash-newlines, and see if we reach this #.
2638 If not, this # is not special. */
2640 /* If -traditional, require # to be at beginning of line. */
2643 if (is_hor_space[*bp])
2645 else if (*bp == '\\' && bp[1] == '\n')
2647 else if (*bp == '/' && bp[1] == '*') {
2649 while (!(*bp == '*' && bp[1] == '/'))
2653 /* There is no point in trying to deal with C++ // comments here,
2654 because if there is one, then this # must be part of the
2655 comment and we would never reach here. */
2661 while (bp[1] == '\\' && bp[2] == '\n')
2665 /* %: appears at start of line; skip past the ':' too. */
2674 /* This # can start a directive. */
2676 --obp; /* Don't copy the '#' */
2680 if (! handle_directive (ip, op)) {
2684 /* Not a known directive: treat it as ordinary text.
2685 IP, OP, IBP, etc. have not been changed. */
2686 if (no_output && instack[indepth].fname) {
2687 /* If not generating expanded output,
2688 what we do with ordinary text is skip it.
2689 Discard everything until next # directive. */
2690 skip_if_group (&instack[indepth], 1, 0);
2695 *obp++ = '#'; /* Copy # (even if it was originally %:). */
2696 /* Don't expand an identifier that could be a macro directive.
2697 (Section 3.8.3 of the ANSI C standard) */
2698 SKIP_WHITE_SPACE (ibp);
2699 if (is_idstart[*ibp])
2702 while (is_idchar[*ibp])
2710 /* A # directive has been successfully processed. */
2711 /* If not generating expanded output, ignore everything until
2712 next # directive. */
2713 if (no_output && instack[indepth].fname)
2714 skip_if_group (&instack[indepth], 1, 0);
2720 case '\"': /* skip quoted string */
2722 /* A single quoted string is treated like a double -- some
2723 programs (e.g., troff) are perverse this way */
2728 start_line = ip->lineno;
2730 /* Skip ahead to a matching quote. */
2734 if (ip->macro != 0) {
2735 /* try harder: this string crosses a macro expansion boundary.
2736 This can happen naturally if -traditional.
2737 Otherwise, only -D can make a macro with an unmatched quote. */
2743 error_with_line (line_for_error (start_line),
2744 "unterminated string or character constant");
2745 error_with_line (multiline_string_line,
2746 "possible real start of unterminated constant");
2747 multiline_string_line = 0;
2756 /* Traditionally, end of line ends a string constant with no error.
2757 So exit the loop and record the new line. */
2763 error_with_line (line_for_error (start_line),
2764 "unterminated character constant");
2767 if (pedantic && multiline_string_line == 0) {
2768 pedwarn_with_line (line_for_error (start_line),
2769 "string constant runs past end of line");
2771 if (multiline_string_line == 0)
2772 multiline_string_line = ip->lineno - 1;
2779 /* Backslash newline is replaced by nothing at all,
2780 but keep the line counts correct. */
2785 /* ANSI stupidly requires that in \\ the second \
2786 is *not* prevented from combining with a newline. */
2787 while (*ibp == '\\' && ibp[1] == '\n') {
2806 if (*ibp == '\\' && ibp[1] == '\n')
2810 && !(cplusplus_comments && *ibp == '/'))
2818 /* C++ style comment... */
2819 start_line = ip->lineno;
2821 --ibp; /* Back over the slash */
2824 /* Comments are equivalent to spaces. */
2825 if (! put_out_comments)
2828 /* must fake up a comment here */
2833 U_CHAR *before_bp = ibp+2;
2835 while (ibp < limit) {
2836 if (ibp[-1] != '\\' && *ibp == '\n') {
2837 if (put_out_comments) {
2838 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2839 obp += ibp - before_bp;
2845 /* Copy the newline into the output buffer, in order to
2846 avoid the pain of a #line every time a multiline comment
2848 if (!put_out_comments)
2859 /* Ordinary C comment. Skip it, optionally copying it to output. */
2861 start_line = ip->lineno;
2863 ++ibp; /* Skip the star. */
2865 /* If this cpp is for lint, we peek inside the comments: */
2869 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2871 if (lintcmd != NULL) {
2873 check_expand (op, cmdlen + arglen + 14);
2875 /* I believe it is always safe to emit this newline: */
2877 bcopy ("#pragma lint ", (char *) obp, 13);
2879 bcopy (lintcmd, (char *) obp, cmdlen);
2884 bcopy (argbp, (char *) obp, arglen);
2888 /* OK, now bring us back to the state we were in before we entered
2889 this branch. We need #line because the #pragma's newline always
2890 messes up the line count. */
2892 output_line_command (ip, op, 0, same_file);
2893 check_expand (op, limit - ibp + 2);
2899 /* Comments are equivalent to spaces.
2900 Note that we already output the slash; we might not want it.
2901 For -traditional, a comment is equivalent to nothing. */
2902 if (! put_out_comments) {
2912 U_CHAR *before_bp = ibp;
2914 while (ibp < limit) {
2917 if (warn_comments && *ibp == '*')
2918 warning ("`/*' within comment");
2921 if (*ibp == '\\' && ibp[1] == '\n')
2923 if (ibp >= limit || *ibp == '/')
2928 /* Copy the newline into the output buffer, in order to
2929 avoid the pain of a #line every time a multiline comment
2931 if (!put_out_comments)
2939 error_with_line (line_for_error (start_line),
2940 "unterminated comment");
2943 if (put_out_comments) {
2944 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2945 obp += ibp - before_bp;
2952 if (!dollars_in_ident)
2956 case '0': case '1': case '2': case '3': case '4':
2957 case '5': case '6': case '7': case '8': case '9':
2958 /* If digit is not part of identifier, it starts a number,
2959 which means that following letters are not an identifier.
2960 "0x5" does not refer to an identifier "x5".
2961 So copy all alphanumerics that follow without accumulating
2962 as an identifier. Periods also, for sake of "3.e7". */
2964 if (ident_length == 0) {
2966 while (ibp[0] == '\\' && ibp[1] == '\n') {
2971 if (!is_idchar[c] && c != '.') {
2976 /* A sign can be part of a preprocessing number
2977 if it follows an e. */
2978 if (c == 'e' || c == 'E') {
2979 while (ibp[0] == '\\' && ibp[1] == '\n') {
2983 if (*ibp == '+' || *ibp == '-') {
2985 /* But traditional C does not let the token go past the sign. */
2996 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
2997 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
2998 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
2999 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3001 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
3002 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
3003 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
3004 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3008 /* Compute step of hash function, to avoid a proc call on every token */
3009 hash = HASHSTEP (hash, c);
3013 if (ip->fname == 0 && *ibp == '-') {
3014 /* Newline - inhibits expansion of preceding token.
3015 If expanding a macro arg, we keep the newline -.
3016 In final output, it is deleted.
3017 We recognize Newline - in macro bodies and macro args. */
3018 if (! concatenated) {
3023 if (!output_marks) {
3026 /* If expanding a macro arg, keep the newline -. */
3032 /* If reprocessing a macro expansion, newline is a special marker. */
3033 else if (ip->macro != 0) {
3034 /* Newline White is a "funny space" to separate tokens that are
3035 supposed to be separate but without space between.
3036 Here White means any whitespace character.
3037 Newline - marks a recursive macro use that is not
3038 supposed to be expandable. */
3040 if (is_space[*ibp]) {
3041 /* Newline Space does not prevent expansion of preceding token
3042 so expand the preceding token and then come back. */
3043 if (ident_length > 0)
3046 /* If generating final output, newline space makes a space. */
3047 if (!output_marks) {
3049 /* And Newline Newline makes a newline, so count it. */
3050 if (obp[-1] == '\n')
3053 /* If expanding a macro arg, keep the newline space.
3054 If the arg gets stringified, newline space makes nothing. */
3057 } else abort (); /* Newline followed by something random? */
3061 /* If there is a pending identifier, handle it and come back here. */
3062 if (ident_length > 0)
3067 /* Update the line counts and output a #line if necessary. */
3070 if (ip->lineno != op->lineno) {
3072 output_line_command (ip, op, 1, same_file);
3073 check_expand (op, limit - ibp);
3078 /* Come here either after (1) a null character that is part of the input
3079 or (2) at the end of the input, because there is a null there. */
3082 /* Our input really contains a null character. */
3085 /* At end of a macro-expansion level, pop it and read next level. */
3086 if (ip->macro != 0) {
3089 /* If traditional, and we have an identifier that ends here,
3090 process it now, so we get the right error for recursion. */
3091 if (traditional && ident_length
3092 && ! is_idchar[*instack[indepth - 1].bufp]) {
3101 /* If we don't have a pending identifier,
3102 return at end of input. */
3103 if (ident_length == 0) {
3111 /* If we do have a pending identifier, just consider this null
3112 a special character and arrange to dispatch on it again.
3113 The second time, IDENT_LENGTH will be zero so we will return. */
3119 /* Handle the case of a character such as /, ', " or null
3120 seen following an identifier. Back over it so that
3121 after the identifier is processed the special char
3122 will be dispatched on again. */
3132 if (ident_length > 0) {
3133 register HASHNODE *hp;
3135 /* We have just seen an identifier end. If it's a macro, expand it.
3137 IDENT_LENGTH is the length of the identifier
3138 and HASH is its hash code.
3140 The identifier has already been copied to the output,
3141 so if it is a macro we must remove it.
3143 If REDO_CHAR is 0, the char that terminated the identifier
3144 has been skipped in the output and the input.
3145 OBP-IDENT_LENGTH-1 points to the identifier.
3146 If the identifier is a macro, we must back over the terminator.
3148 If REDO_CHAR is 1, the terminating char has already been
3149 backed over. OBP-IDENT_LENGTH points to the identifier. */
3151 if (!pcp_outfile || pcp_inside_if) {
3153 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3156 if (hp->length == ident_length) {
3157 int obufp_before_macroname;
3158 int op_lineno_before_macroname;
3159 register int i = ident_length;
3160 register U_CHAR *p = hp->name;
3161 register U_CHAR *q = obp - i;
3167 do { /* All this to avoid a strncmp () */
3172 /* We found a use of a macro name.
3173 see if the context shows it is a macro call. */
3175 /* Back up over terminating character if not already done. */
3181 /* Save this as a displacement from the beginning of the output
3182 buffer. We can not save this as a position in the output
3183 buffer, because it may get realloc'ed by RECACHE. */
3184 obufp_before_macroname = (obp - op->buf) - ident_length;
3185 op_lineno_before_macroname = op->lineno;
3187 if (hp->type == T_PCSTRING) {
3188 pcstring_used (hp); /* Mark the definition of this key
3189 as needed, ensuring that it
3191 break; /* Exit loop, since the key cannot have a
3192 definition any longer. */
3195 /* Record whether the macro is disabled. */
3196 disabled = hp->type == T_DISABLED;
3198 /* This looks like a macro ref, but if the macro was disabled,
3199 just copy its name and put in a marker if requested. */
3203 /* This error check caught useful cases such as
3204 #define foo(x,y) bar (x (y,0), y)
3207 error ("recursive use of macro `%s'", hp->name);
3211 check_expand (op, limit - ibp + 2);
3218 /* If macro wants an arglist, verify that a '(' follows.
3219 first skip all whitespace, copying it to the output
3220 after the macro name. Then, if there is no '(',
3221 decide this is not a macro call and leave things that way. */
3222 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3223 && hp->value.defn->nargs >= 0)
3225 U_CHAR *old_ibp = ibp;
3226 U_CHAR *old_obp = obp;
3227 int old_iln = ip->lineno;
3228 int old_oln = op->lineno;
3231 /* Scan forward over whitespace, copying it to the output. */
3232 if (ibp == limit && ip->macro != 0) {
3237 old_iln = ip->lineno;
3238 old_oln = op->lineno;
3240 /* A comment: copy it unchanged or discard it. */
3241 else if (*ibp == '/' && ibp[1] == '*') {
3242 if (put_out_comments) {
3245 } else if (! traditional) {
3249 while (ibp + 1 != limit
3250 && !(ibp[0] == '*' && ibp[1] == '/')) {
3251 /* We need not worry about newline-marks,
3252 since they are never found in comments. */
3254 /* Newline in a file. Count it. */
3258 if (put_out_comments)
3264 if (put_out_comments) {
3269 else if (is_space[*ibp]) {
3271 if (ibp[-1] == '\n') {
3272 if (ip->macro == 0) {
3273 /* Newline in a file. Count it. */
3276 } else if (!output_marks) {
3277 /* A newline mark, and we don't want marks
3278 in the output. If it is newline-hyphen,
3279 discard it entirely. Otherwise, it is
3280 newline-whitechar, so keep the whitechar. */
3290 /* A newline mark; copy both chars to the output. */
3298 /* It isn't a macro call.
3299 Put back the space that we just skipped. */
3302 ip->lineno = old_iln;
3303 op->lineno = old_oln;
3304 /* Exit the for loop. */
3309 /* This is now known to be a macro call.
3310 Discard the macro name from the output,
3311 along with any following whitespace just copied,
3312 but preserve newlines if not outputting marks since this
3313 is more likely to do the right thing with line numbers. */
3314 obp = op->buf + obufp_before_macroname;
3316 op->lineno = op_lineno_before_macroname;
3318 int newlines = op->lineno - op_lineno_before_macroname;
3319 while (0 < newlines--)
3323 /* Prevent accidental token-pasting with a character
3324 before the macro call. */
3325 if (!traditional && obp != op->buf) {
3327 case '%': case '&': case '+': case '-':
3328 case ':': case '<': case '>': case '|':
3329 /* If we are expanding a macro arg, make a newline marker
3330 to separate the tokens. If we are making real output,
3331 a plain space will do. */
3338 /* Expand the macro, reading arguments as needed,
3339 and push the expansion on the input stack. */
3342 macroexpand (hp, op);
3344 /* Reexamine input stack, since macroexpand has pushed
3345 a new level on it. */
3352 } /* End hash-table-search loop */
3354 ident_length = hash = 0; /* Stop collecting identifier */
3357 } /* End if (ident_length > 0) */
3359 } /* End per-char loop */
3361 /* Come here to return -- but first give an error message
3362 if there was an unterminated successful conditional. */
3364 if (if_stack != ip->if_stack)
3366 char *str = "unknown";
3368 switch (if_stack->type)
3387 error_with_line (line_for_error (if_stack->lineno),
3388 "unterminated `#%s' conditional", str);
3390 if_stack = ip->if_stack;
3394 * Rescan a string into a temporary buffer and return the result
3395 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3397 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3398 * and insert such markers when appropriate. See `rescan' for details.
3399 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3400 * before substitution; it is 0 for other uses.
3403 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3404 U_CHAR *buf, *limit;
3405 int output_marks, assertions;
3407 register FILE_BUF *ip;
3409 int length = limit - buf;
3411 int odepth = indepth;
3412 int save_assertions_flag = assertions_flag;
3414 assertions_flag = assertions;
3419 /* Set up the input on the input stack. */
3421 buf1 = (U_CHAR *) alloca (length + 1);
3423 register U_CHAR *p1 = buf;
3424 register U_CHAR *p2 = buf1;
3431 /* Set up to receive the output. */
3433 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3434 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3439 CHECK_DEPTH ({return obuf;});
3443 ip = &instack[indepth];
3445 ip->nominal_fname = 0;
3446 ip->system_header_p = 0;
3449 ip->length = length;
3450 ip->buf = ip->bufp = buf1;
3451 ip->if_stack = if_stack;
3453 ip->lineno = obuf.lineno = 1;
3455 /* Scan the input, create the output. */
3456 rescan (&obuf, output_marks);
3458 /* Pop input stack to original state. */
3461 if (indepth != odepth)
3464 /* Record the output. */
3465 obuf.length = obuf.bufp - obuf.buf;
3467 assertions_flag = save_assertions_flag;
3472 * Process a # directive. Expects IP->bufp to point after the '#', as in
3473 * `#define foo bar'. Passes to the command handler
3474 * (do_define, do_include, etc.): the addresses of the 1st and
3475 * last chars of the command (starting immediately after the #
3476 * keyword), plus op and the keyword table pointer. If the command
3477 * contains comments it is copied into a temporary buffer sans comments
3478 * and the temporary buffer is passed to the command handler instead.
3479 * Likewise for backslash-newlines.
3481 * Returns nonzero if this was a known # directive.
3482 * Otherwise, returns zero, without advancing the input pointer.
3486 handle_directive (ip, op)
3489 register U_CHAR *bp, *cp;
3490 register struct directive *kt;
3491 register int ident_length;
3494 /* Nonzero means we must copy the entire command
3495 to get rid of comments or backslash-newlines. */
3496 int copy_command = 0;
3498 U_CHAR *ident, *after_ident;
3502 /* Record where the directive started. do_xifdef needs this. */
3503 directive_start = bp - 1;
3505 /* Skip whitespace and \-newline. */
3507 if (is_hor_space[*bp]) {
3508 if (*bp != ' ' && *bp != '\t' && pedantic)
3509 pedwarn ("%s in preprocessing directive", char_name[*bp]);
3511 } else if (*bp == '/' && (bp[1] == '*'
3512 || (cplusplus_comments && bp[1] == '/'))) {
3514 skip_to_end_of_comment (ip, &ip->lineno, 0);
3516 } else if (*bp == '\\' && bp[1] == '\n') {
3517 bp += 2; ip->lineno++;
3521 /* Now find end of directive name.
3522 If we encounter a backslash-newline, exchange it with any following
3523 symbol-constituents so that we end up with a contiguous name. */
3530 if (*cp == '\\' && cp[1] == '\n')
3531 name_newline_fix (cp);
3537 ident_length = cp - bp;
3541 /* A line of just `#' becomes blank. */
3543 if (ident_length == 0 && *after_ident == '\n') {
3544 ip->bufp = after_ident;
3548 if (ident_length == 0 || !is_idstart[*ident]) {
3550 while (is_idchar[*p]) {
3551 if (*p < '0' || *p > '9')
3555 /* Handle # followed by a line number. */
3556 if (p != ident && !is_idchar[*p]) {
3557 static struct directive line_directive_table[] = {
3558 { 4, do_line, "line", T_LINE},
3561 pedwarn ("`#' followed by integer");
3562 after_ident = ident;
3563 kt = line_directive_table;
3567 /* Avoid error for `###' and similar cases unless -pedantic. */
3569 while (*p == '#' || is_hor_space[*p]) p++;
3571 if (pedantic && !lang_asm)
3572 warning ("invalid preprocessor directive");
3578 error ("invalid preprocessor directive name");
3584 * Decode the keyword and call the appropriate expansion
3585 * routine, after moving the input pointer up to the next line.
3587 for (kt = directive_table; kt->length > 0; kt++) {
3588 if (kt->length == ident_length && !strncmp (kt->name, ident, ident_length)) {
3589 register U_CHAR *buf;
3590 register U_CHAR *limit;
3593 int *already_output;
3595 /* Nonzero means do not delete comments within the directive.
3596 #define needs this when -traditional. */
3601 limit = ip->buf + ip->length;
3604 keep_comments = traditional && kt->traditional_comments;
3605 /* #import is defined only in Objective C, or when on the NeXT. */
3606 if (kt->type == T_IMPORT && !(objc || lookup ("__NeXT__", -1, -1)))
3609 /* Find the end of this command (first newline not backslashed
3610 and not in a string or comment).
3611 Set COPY_COMMAND if the command must be copied
3612 (it contains a backslash-newline or a comment). */
3614 buf = bp = after_ident;
3615 while (bp < limit) {
3616 register U_CHAR c = *bp++;
3624 } else if (traditional)
3631 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_command, &unterminated);
3632 /* Don't bother calling the directive if we already got an error
3633 message due to unterminated string. Skip everything and pretend
3634 we called the directive. */
3637 /* Traditional preprocessing permits unterminated strings. */
3646 /* <...> is special for #include. */
3648 if (!kt->angle_brackets)
3650 while (bp < limit && *bp != '>' && *bp != '\n') {
3651 if (*bp == '\\' && bp[1] == '\n') {
3661 if (*bp == '\\' && bp[1] == '\n')
3664 || (cplusplus_comments && *bp == '/')) {
3665 U_CHAR *obp = bp - 1;
3667 skip_to_end_of_comment (ip, &ip->lineno, 0);
3669 /* No need to copy the command because of a comment at the end;
3670 just don't include the comment in the directive. */
3671 if (bp == limit || *bp == '\n') {
3675 /* Don't remove the comments if -traditional. */
3676 if (! keep_comments)
3685 pedwarn ("%s in preprocessing directive", char_name[c]);
3689 --bp; /* Point to the newline */
3697 resume_p = ip->bufp;
3698 /* BP is the end of the directive.
3699 RESUME_P is the next interesting data after the directive.
3700 A comment may come between. */
3702 /* If a directive should be copied through, and -E was given,
3703 pass it through before removing comments. */
3704 if (!no_output && kt->pass_thru && put_out_comments) {
3707 /* Output directive name. */
3708 check_expand (op, kt->length + 2);
3709 /* Make sure # is at the start of a line */
3710 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3715 bcopy (kt->name, op->bufp, kt->length);
3716 op->bufp += kt->length;
3718 /* Output arguments. */
3720 check_expand (op, len);
3721 bcopy (buf, (char *) op->bufp, len);
3723 /* Take account of any (escaped) newlines just output. */
3725 if (buf[len] == '\n')
3728 already_output = &junk;
3729 } /* Don't we need a newline or #line? */
3732 register U_CHAR *xp = buf;
3733 /* Need to copy entire command into temp buffer before dispatching */
3735 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for cmd plus
3739 /* Copy to the new buffer, deleting comments
3740 and backslash-newlines (and whitespace surrounding the latter). */
3743 register U_CHAR c = *xp++;
3748 abort (); /* A bare newline should never part of the line. */
3751 /* <...> is special for #include. */
3753 if (!kt->angle_brackets)
3755 while (xp < bp && c != '>') {
3757 if (c == '\\' && xp < bp && *xp == '\n')
3768 if (cp != buf && is_space[cp[-1]]) {
3769 while (cp != buf && is_space[cp[-1]]) cp--;
3771 SKIP_WHITE_SPACE (xp);
3772 } else if (is_space[*xp]) {
3774 SKIP_WHITE_SPACE (xp);
3776 } else if (traditional && xp < bp) {
3784 register U_CHAR *bp1
3785 = skip_quoted_string (xp - 1, bp, ip->lineno,
3786 NULL_PTR, NULL_PTR, NULL_PTR);
3800 || (cplusplus_comments && *xp == '/')) {
3802 /* If we already copied the command through,
3803 already_output != 0 prevents outputting comment now. */
3804 skip_to_end_of_comment (ip, already_output, 0);
3806 while (xp != ip->bufp)
3808 /* Delete or replace the slash. */
3809 else if (traditional)
3818 /* Null-terminate the copy. */
3824 ip->bufp = resume_p;
3826 /* Some directives should be written out for cc1 to process,
3827 just as if they were not defined. And sometimes we're copying
3828 definitions through. */
3830 if (!no_output && already_output == 0
3832 || (kt->type == T_DEFINE
3833 && (dump_macros == dump_names
3834 || dump_macros == dump_definitions)))) {
3837 /* Output directive name. */
3838 check_expand (op, kt->length + 1);
3840 bcopy (kt->name, (char *) op->bufp, kt->length);
3841 op->bufp += kt->length;
3843 if (kt->pass_thru || dump_macros == dump_definitions) {
3844 /* Output arguments. */
3846 check_expand (op, len);
3847 bcopy (buf, (char *) op->bufp, len);
3849 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
3852 SKIP_WHITE_SPACE (xp);
3854 while (is_idchar[*xp]) xp++;
3856 check_expand (op, len + 1);
3858 bcopy (yp, op->bufp, len);
3861 } /* Don't we need a newline or #line? */
3863 /* Call the appropriate command handler. buf now points to
3864 either the appropriate place in the input buffer, or to
3865 the temp buffer if it was necessary to make one. cp
3866 points to the first char after the contents of the (possibly
3867 copied) command, in either case. */
3868 (*kt->func) (buf, cp, op, kt);
3869 check_expand (op, ip->length - (ip->bufp - ip->buf));
3875 /* It is deliberate that we don't warn about undefined directives.
3876 That is the responsibility of cc1. */
3883 static struct tm *timebuf;
3885 time_t t = time ((time_t *)0);
3886 timebuf = localtime (&t);
3891 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3892 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
3896 * expand things like __FILE__. Place the expansion into the output
3897 * buffer *without* rescanning.
3901 special_symbol (hp, op)
3908 FILE_BUF *ip = NULL;
3911 int paren = 0; /* For special `defined' keyword */
3913 if (pcp_outfile && pcp_inside_if
3914 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
3915 error ("Predefined macro `%s' used inside `#if' during precompilation",
3918 for (i = indepth; i >= 0; i--)
3919 if (instack[i].fname != NULL) {
3924 error ("cccp error: not in any file?!");
3925 return; /* the show must go on */
3933 if (hp->type == T_FILE)
3934 string = ip->nominal_fname;
3936 string = instack[0].nominal_fname;
3940 buf = (char *) alloca (3 + 4 * strlen (string));
3941 quote_string (buf, string);
3949 case T_INCLUDE_LEVEL:
3951 for (i = indepth; i >= 0; i--)
3952 if (instack[i].fname != NULL)
3955 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
3956 sprintf (buf, "%d", true_indepth - 1);
3960 buf = (char *) alloca (3 + strlen (version_string));
3961 sprintf (buf, "\"%s\"", version_string);
3964 #ifndef NO_BUILTIN_SIZE_TYPE
3970 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3971 case T_PTRDIFF_TYPE:
3980 case T_USER_LABEL_PREFIX_TYPE:
3981 buf = USER_LABEL_PREFIX;
3984 case T_REGISTER_PREFIX_TYPE:
3985 buf = REGISTER_PREFIX;
3989 buf = hp->value.cpval;
3990 if (pcp_inside_if && pcp_outfile)
3991 /* Output a precondition for this macro use */
3992 fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
3996 buf = (char *) alloca (10);
3997 sprintf (buf, "%d", ip->lineno);
4002 buf = (char *) alloca (20);
4003 timebuf = timestamp ();
4004 if (hp->type == T_DATE)
4005 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
4006 timebuf->tm_mday, timebuf->tm_year + 1900);
4008 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
4012 case T_SPEC_DEFINED:
4013 buf = " 0 "; /* Assume symbol is not defined */
4014 ip = &instack[indepth];
4015 SKIP_WHITE_SPACE (ip->bufp);
4016 if (*ip->bufp == '(') {
4018 ip->bufp++; /* Skip over the paren */
4019 SKIP_WHITE_SPACE (ip->bufp);
4022 if (!is_idstart[*ip->bufp])
4024 if (hp = lookup (ip->bufp, -1, -1)) {
4025 if (pcp_outfile && pcp_inside_if
4026 && (hp->type == T_CONST
4027 || (hp->type == T_MACRO && hp->value.defn->predefined)))
4028 /* Output a precondition for this macro use. */
4029 fprintf (pcp_outfile, "#define %s\n", hp->name);
4033 if (pcp_outfile && pcp_inside_if) {
4034 /* Output a precondition for this macro use */
4035 U_CHAR *cp = ip->bufp;
4036 fprintf (pcp_outfile, "#undef ");
4037 while (is_idchar[*cp]) /* Ick! */
4038 fputc (*cp++, pcp_outfile);
4039 putc ('\n', pcp_outfile);
4041 while (is_idchar[*ip->bufp])
4043 SKIP_WHITE_SPACE (ip->bufp);
4045 if (*ip->bufp != ')')
4053 error ("`defined' without an identifier");
4057 error ("cccp error: invalid special hash type"); /* time for gdb */
4061 check_expand (op, len);
4062 bcopy (buf, (char *) op->bufp, len);
4069 /* Routines to handle #directives */
4071 /* Handle #include and #import.
4072 This function expects to see "fname" or <fname> on the input. */
4075 do_include (buf, limit, op, keyword)
4076 U_CHAR *buf, *limit;
4078 struct directive *keyword;
4080 int importing = (keyword->type == T_IMPORT);
4081 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4082 static int import_warning = 0;
4083 char *fname; /* Dynamically allocated fname buffer */
4086 U_CHAR *fbeg, *fend; /* Beginning and end of fname */
4088 struct file_name_list *search_start = include; /* Chain of dirs to search */
4089 struct file_name_list dsp[1]; /* First in chain, if #include "..." */
4090 struct file_name_list *searchptr = 0;
4093 int f; /* file number */
4095 int retried = 0; /* Have already tried macro
4096 expanding the include line*/
4097 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4102 f= -1; /* JF we iz paranoid! */
4104 if (importing && warn_import && !inhibit_warnings
4105 && !instack[indepth].system_header_p && !import_warning) {
4107 warning ("using `#import' is not recommended");
4108 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4109 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4110 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4111 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4112 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4113 fprintf (stderr, " ... <real contents of file> ...\n");
4114 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4115 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4116 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4117 fprintf (stderr, "when it is equipped with such a conditional.\n");
4123 SKIP_WHITE_SPACE (fbeg);
4124 /* Discard trailing whitespace so we can easily see
4125 if we have parsed all the significant chars we were given. */
4126 while (limit != fbeg && is_hor_space[limit[-1]]) limit--;
4132 /* Copy the operand text, concatenating the strings. */
4135 fbeg = (U_CHAR *) alloca (limit - fbeg + 1);
4137 while (fin != limit) {
4138 while (fin != limit && *fin != '\"')
4143 /* If not at the end, there had better be another string. */
4144 /* Skip just horiz space, and don't go past limit. */
4145 while (fin != limit && is_hor_space[*fin]) fin++;
4146 if (fin != limit && *fin == '\"')
4154 /* We have "filename". Figure out directory this source
4155 file is coming from and put it on the front of the list. */
4157 /* If -I- was specified, don't search current dir, only spec'd ones. */
4158 if (ignore_srcdir) break;
4160 for (fp = &instack[indepth]; fp >= instack; fp--)
4165 if ((nam = fp->nominal_fname) != NULL) {
4166 /* Found a named file. Figure out dir of the file,
4167 and put it in front of the search list. */
4168 dsp[0].next = search_start;
4171 ep = rindex (nam, '/');
4172 #ifdef DIR_SEPARATOR
4173 if (ep == NULL) ep = rindex (nam, DIR_SEPARATOR);
4175 char *tmp = rindex (nam, DIR_SEPARATOR);
4176 if (tmp != NULL && tmp > ep) ep = tmp;
4180 ep = rindex (nam, ']');
4181 if (ep == NULL) ep = rindex (nam, '>');
4182 if (ep == NULL) ep = rindex (nam, ':');
4183 if (ep != NULL) ep++;
4187 dsp[0].fname = (char *) alloca (n + 1);
4188 strncpy (dsp[0].fname, nam, n);
4189 dsp[0].fname[n] = '\0';
4190 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4191 max_include_len = n + INCLUDE_LEN_FUDGE;
4193 dsp[0].fname = 0; /* Current directory */
4195 dsp[0].got_name_map = 0;
4204 while (fend != limit && *fend != '>') fend++;
4205 if (*fend == '>' && fend + 1 == limit) {
4207 /* If -I-, start with the first -I dir after the -I-. */
4208 if (first_bracket_include)
4209 search_start = first_bracket_include;
4217 * Support '#include xyz' like VAX-C to allow for easy use of all the
4218 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4219 * code from case '<' is repeated here) and generates a warning.
4220 * (Note: macro expansion of `xyz' takes precedence.)
4222 if (retried && isalpha(*(--fbeg))) {
4224 while (fend != limit && (!isspace(*fend))) fend++;
4225 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4226 if (fend == limit) {
4228 /* If -I-, start with the first -I dir after the -I-. */
4229 if (first_bracket_include)
4230 search_start = first_bracket_include;
4238 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4241 /* Expand buffer and then remove any newline markers.
4242 We can't just tell expand_to_temp_buffer to omit the markers,
4243 since it would put extra spaces in include file names. */
4246 trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
4248 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4250 while (src != trybuf.bufp) {
4251 switch ((*limit++ = *src++)) {
4260 U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
4261 NULL_PTR, NULL_PTR, NULL_PTR);
4275 /* For #include_next, skip in the search path
4276 past the dir in which the containing file was found. */
4279 for (fp = &instack[indepth]; fp >= instack; fp--)
4280 if (fp->fname != NULL) {
4281 /* fp->dir is null if the containing file was specified
4282 with an absolute file name. In that case, don't skip anything. */
4284 search_start = fp->dir->next;
4293 error ("empty file name in `#%s'", keyword->name);
4297 /* Allocate this permanently, because it gets stored in the definitions
4299 fname = (char *) xmalloc (max_include_len + flen + 4);
4300 /* + 2 above for slash and terminating null. */
4301 /* + 2 added for '.h' on VMS (to support '#include filename') */
4303 /* If specified file name is absolute, just open it. */
4306 #ifdef DIR_SEPARATOR
4307 || *fbeg == DIR_SEPARATOR
4310 strncpy (fname, fbeg, flen);
4312 if (redundant_include_p (fname))
4315 f = lookup_import (fname, NULL_PTR);
4317 f = open_include_file (fname, NULL_PTR);
4319 return 0; /* Already included this file */
4321 /* Search directory path, trying to open the file.
4322 Copy each filename tried into FNAME. */
4324 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4325 if (searchptr->fname) {
4326 /* The empty string in a search path is ignored.
4327 This makes it possible to turn off entirely
4328 a standard piece of the list. */
4329 if (searchptr->fname[0] == 0)
4331 strcpy (fname, searchptr->fname);
4332 strcat (fname, "/");
4333 fname[strlen (fname) + flen] = 0;
4337 strncat (fname, fbeg, flen);
4339 /* Change this 1/2 Unix 1/2 VMS file specification into a
4340 full VMS file specification */
4341 if (searchptr->fname && (searchptr->fname[0] != 0)) {
4342 /* Fix up the filename */
4343 hack_vms_include_specification (fname);
4345 /* This is a normal VMS filespec, so use it unchanged. */
4346 strncpy (fname, fbeg, flen);
4348 /* if it's '#include filename', add the missing .h */
4349 if (index(fname,'.')==NULL) {
4350 strcat (fname, ".h");
4355 f = lookup_import (fname, searchptr);
4357 f = open_include_file (fname, searchptr);
4359 return 0; /* Already included this file */
4361 else if (f == -1 && errno == EACCES)
4362 warning ("Header file %s exists, but is not readable", fname);
4364 if (redundant_include_p (fname)) {
4374 /* A file that was not found. */
4376 strncpy (fname, fbeg, flen);
4378 /* If generating dependencies and -MG was specified, we assume missing
4379 files are leaf files, living in the same directory as the source file
4380 or other similar place; these missing files may be generated from
4381 other files and may not exist yet (eg: y.tab.h). */
4382 if (print_deps_missing_files
4383 && print_deps > (angle_brackets || (system_include_depth > 0)))
4385 /* If it was requested as a system header file,
4386 then assume it belongs in the first place to look for such. */
4389 for (searchptr = search_start; searchptr; searchptr = searchptr->next)
4391 if (searchptr->fname)
4395 if (searchptr->fname[0] == 0)
4397 p = xmalloc (strlen (searchptr->fname)
4398 + strlen (fname) + 2);
4399 strcpy (p, searchptr->fname);
4402 deps_output (p, ' ');
4409 /* Otherwise, omit the directory, as if the file existed
4410 in the directory with the source. */
4411 deps_output (fname, ' ');
4414 /* If -M was specified, and this header file won't be added to the
4415 dependency list, then don't count this as an error, because we can
4416 still produce correct output. Otherwise, we can't produce correct
4417 output, because there may be dependencies we need inside the missing
4418 file, and we don't know what directory this missing file exists in. */
4420 && (print_deps <= (angle_brackets || (system_include_depth > 0))))
4421 warning ("No include path in which to find %s", fname);
4422 else if (search_start)
4423 error_from_errno (fname);
4425 error ("No include path in which to find %s", fname);
4429 /* Check to see if this include file is a once-only include file.
4432 struct file_name_list* ptr;
4434 for (ptr = dont_repeat_files; ptr; ptr = ptr->next) {
4435 if (!strcmp (ptr->fname, fname)) {
4437 return 0; /* This file was once'd. */
4441 for (ptr = all_include_files; ptr; ptr = ptr->next) {
4442 if (!strcmp (ptr->fname, fname))
4443 break; /* This file was included before. */
4447 /* This is the first time for this file. */
4448 /* Add it to list of files included. */
4450 ptr = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
4451 ptr->control_macro = 0;
4452 ptr->c_system_include_path = 0;
4453 ptr->next = all_include_files;
4454 all_include_files = ptr;
4455 ptr->fname = savestring (fname);
4456 ptr->got_name_map = 0;
4458 /* For -M, add this file to the dependencies. */
4459 if (print_deps > (angle_brackets || (system_include_depth > 0)))
4460 deps_output (fname, ' ');
4463 /* Handle -H option. */
4464 if (print_include_names) {
4465 output_dots (stderr, indepth);
4466 fprintf (stderr, "%s\n", fname);
4470 system_include_depth++;
4472 /* Actually process the file. */
4473 add_import (f, fname); /* Record file on "seen" list for #import. */
4475 pcftry = (char *) alloca (strlen (fname) + 30);
4483 sprintf (pcftry, "%s%d", fname, pcfnum++);
4485 pcf = open (pcftry, O_RDONLY, 0666);
4491 if (bcmp ((char *) &stat_f.st_ino, (char *) &s.st_ino,
4493 || stat_f.st_dev != s.st_dev)
4495 pcfbuf = check_precompiled (pcf, fname, &pcfbuflimit);
4496 /* Don't need it any more. */
4501 /* Don't need it at all. */
4506 } while (pcf != -1 && !pcfbuf);
4508 /* Actually process the file */
4510 pcfname = xmalloc (strlen (pcftry) + 1);
4511 strcpy (pcfname, pcftry);
4512 pcfinclude (pcfbuf, pcfbuflimit, fname, op);
4515 finclude (f, fname, op, is_system_include (fname), searchptr);
4518 system_include_depth--;
4523 /* Return nonzero if there is no need to include file NAME
4524 because it has already been included and it contains a conditional
4525 to make a repeated include do nothing. */
4528 redundant_include_p (name)
4531 struct file_name_list *l = all_include_files;
4532 for (; l; l = l->next)
4533 if (! strcmp (name, l->fname)
4535 && lookup (l->control_macro, -1, -1))
4540 /* Return nonzero if the given FILENAME is an absolute pathname which
4541 designates a file within one of the known "system" include file
4542 directories. We assume here that if the given FILENAME looks like
4543 it is the name of a file which resides either directly in a "system"
4544 include file directory, or within any subdirectory thereof, then the
4545 given file must be a "system" include file. This function tells us
4546 if we should suppress pedantic errors/warnings for the given FILENAME.
4548 The value is 2 if the file is a C-language system header file
4549 for which C++ should (on most systems) assume `extern "C"'. */
4552 is_system_include (filename)
4553 register char *filename;
4555 struct file_name_list *searchptr;
4557 for (searchptr = first_system_include; searchptr;
4558 searchptr = searchptr->next)
4559 if (searchptr->fname) {
4560 register char *sys_dir = searchptr->fname;
4561 register unsigned length = strlen (sys_dir);
4563 if (! strncmp (sys_dir, filename, length)
4564 && (filename[length] == '/'
4565 #ifdef DIR_SEPARATOR
4566 || filename[length] == DIR_SEPARATOR
4569 if (searchptr->c_system_include_path)
4578 /* The file_name_map structure holds a mapping of file names for a
4579 particular directory. This mapping is read from the file named
4580 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4581 map filenames on a file system with severe filename restrictions,
4582 such as DOS. The format of the file name map file is just a series
4583 of lines with two tokens on each line. The first token is the name
4584 to map, and the second token is the actual name to use. */
4586 struct file_name_map
4588 struct file_name_map *map_next;
4593 #define FILE_NAME_MAP_FILE "header.gcc"
4595 /* Read a space delimited string of unlimited length from a stdio
4599 read_filename_string (ch, f)
4607 set = alloc = xmalloc (len + 1);
4611 while ((ch = getc (f)) != EOF && ! is_space[ch])
4613 if (set - alloc == len)
4616 alloc = xrealloc (alloc, len + 1);
4617 set = alloc + len / 2;
4627 /* Read the file name map file for DIRNAME. */
4629 static struct file_name_map *
4630 read_name_map (dirname)
4633 /* This structure holds a linked list of file name maps, one per
4635 struct file_name_map_list
4637 struct file_name_map_list *map_list_next;
4638 char *map_list_name;
4639 struct file_name_map *map_list_map;
4641 static struct file_name_map_list *map_list;
4642 register struct file_name_map_list *map_list_ptr;
4646 for (map_list_ptr = map_list; map_list_ptr;
4647 map_list_ptr = map_list_ptr->map_list_next)
4648 if (! strcmp (map_list_ptr->map_list_name, dirname))
4649 return map_list_ptr->map_list_map;
4651 map_list_ptr = ((struct file_name_map_list *)
4652 xmalloc (sizeof (struct file_name_map_list)));
4653 map_list_ptr->map_list_name = savestring (dirname);
4654 map_list_ptr->map_list_map = NULL;
4656 name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
4657 strcpy (name, dirname);
4660 strcat (name, FILE_NAME_MAP_FILE);
4661 f = fopen (name, "r");
4663 map_list_ptr->map_list_map = NULL;
4667 int dirlen = strlen (dirname);
4669 while ((ch = getc (f)) != EOF)
4672 struct file_name_map *ptr;
4676 from = read_filename_string (ch, f);
4677 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4679 to = read_filename_string (ch, f);
4681 ptr = ((struct file_name_map *)
4682 xmalloc (sizeof (struct file_name_map)));
4683 ptr->map_from = from;
4685 /* Make the real filename absolute. */
4690 ptr->map_to = xmalloc (dirlen + strlen (to) + 2);
4691 strcpy (ptr->map_to, dirname);
4692 ptr->map_to[dirlen] = '/';
4693 strcpy (ptr->map_to + dirlen + 1, to);
4697 ptr->map_next = map_list_ptr->map_list_map;
4698 map_list_ptr->map_list_map = ptr;
4700 while ((ch = getc (f)) != '\n')
4707 map_list_ptr->map_list_next = map_list;
4708 map_list = map_list_ptr;
4710 return map_list_ptr->map_list_map;
4713 /* Try to open include file FILENAME. SEARCHPTR is the directory
4714 being tried from the include file search path. This function maps
4715 filenames on file systems based on information read by
4719 open_include_file (filename, searchptr)
4721 struct file_name_list *searchptr;
4723 register struct file_name_map *map;
4724 register char *from;
4727 if (searchptr && ! searchptr->got_name_map)
4729 searchptr->name_map = read_name_map (searchptr->fname
4730 ? searchptr->fname : ".");
4731 searchptr->got_name_map = 1;
4734 /* First check the mapping for the directory we are using. */
4735 if (searchptr && searchptr->name_map)
4738 if (searchptr->fname)
4739 from += strlen (searchptr->fname) + 1;
4740 for (map = searchptr->name_map; map; map = map->map_next)
4742 if (! strcmp (map->map_from, from))
4744 /* Found a match. */
4745 return open (map->map_to, O_RDONLY, 0666);
4750 /* Try to find a mapping file for the particular directory we are
4751 looking in. Thus #include <sys/types.h> will look up sys/types.h
4752 in /usr/include/header.gcc and look up types.h in
4753 /usr/include/sys/header.gcc. */
4754 p = rindex (filename, '/');
4755 #ifdef DIR_SEPARATOR
4756 if (! p) p = rindex (filename, DIR_SEPARATOR);
4758 char *tmp = rindex (filename, DIR_SEPARATOR);
4759 if (tmp != NULL && tmp > p) p = tmp;
4766 && strlen (searchptr->fname) == p - filename
4767 && ! strncmp (searchptr->fname, filename, p - filename))
4769 /* FILENAME is in SEARCHPTR, which we've already checked. */
4770 return open (filename, O_RDONLY, 0666);
4780 dir = (char *) alloca (p - filename + 1);
4781 bcopy (filename, dir, p - filename);
4782 dir[p - filename] = '\0';
4785 for (map = read_name_map (dir); map; map = map->map_next)
4786 if (! strcmp (map->map_from, from))
4787 return open (map->map_to, O_RDONLY, 0666);
4789 return open (filename, O_RDONLY, 0666);
4792 /* Process the contents of include file FNAME, already open on descriptor F,
4794 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4795 "system" include directories (as decided by the `is_system_include'
4797 DIRPTR is the link in the dir path through which this file was found,
4798 or 0 if the file name was absolute. */
4801 finclude (f, fname, op, system_header_p, dirptr)
4805 int system_header_p;
4806 struct file_name_list *dirptr;
4811 FILE_BUF *fp; /* For input stack frame */
4812 int missing_newline = 0;
4814 CHECK_DEPTH (return;);
4816 if (file_size_and_mode (f, &st_mode, &st_size) < 0)
4818 perror_with_name (fname);
4823 fp = &instack[indepth + 1];
4824 bzero ((char *) fp, sizeof (FILE_BUF));
4825 fp->nominal_fname = fp->fname = fname;
4828 fp->if_stack = if_stack;
4829 fp->system_header_p = system_header_p;
4832 if (S_ISREG (st_mode)) {
4833 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
4836 /* Read the file contents, knowing that st_size is an upper bound
4837 on the number of bytes we can read. */
4838 fp->length = safe_read (f, fp->buf, st_size);
4839 if (fp->length < 0) goto nope;
4841 else if (S_ISDIR (st_mode)) {
4842 error ("directory `%s' specified in #include", fname);
4846 /* Cannot count its file size before reading.
4847 First read the entire file into heap and
4848 copy them into buffer on stack. */
4853 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
4856 i = safe_read (f, fp->buf + st_size, bsize - st_size);
4858 goto nope; /* error! */
4860 if (st_size != bsize)
4861 break; /* End of file */
4863 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
4866 fp->length = st_size;
4869 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
4870 /* Backslash-newline at end is not good enough. */
4871 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
4872 fp->buf[fp->length++] = '\n';
4873 missing_newline = 1;
4875 fp->buf[fp->length] = '\0';
4877 /* Close descriptor now, so nesting does not use lots of descriptors. */
4880 /* Must do this before calling trigraph_pcp, so that the correct file name
4881 will be printed in warning messages. */
4884 input_file_stack_tick++;
4889 output_line_command (fp, op, 0, enter_file);
4892 if (missing_newline)
4895 if (pedantic && missing_newline)
4896 pedwarn ("file does not end in newline");
4899 input_file_stack_tick++;
4900 output_line_command (&instack[indepth], op, 0, leave_file);
4906 perror_with_name (fname);
4911 /* Record that inclusion of the file named FILE
4912 should be controlled by the macro named MACRO_NAME.
4913 This means that trying to include the file again
4914 will do something if that macro is defined. */
4917 record_control_macro (file, macro_name)
4921 struct file_name_list *new;
4923 for (new = all_include_files; new; new = new->next) {
4924 if (!strcmp (new->fname, file)) {
4925 new->control_macro = macro_name;
4930 /* If the file is not in all_include_files, something's wrong. */
4934 /* Maintain and search list of included files, for #import. */
4936 #define IMPORT_HASH_SIZE 31
4938 struct import_file {
4942 struct import_file *next;
4945 /* Hash table of files already included with #include or #import. */
4947 static struct import_file *import_hash_table[IMPORT_HASH_SIZE];
4949 /* Hash a file name for import_hash_table. */
4957 while (*f) val += *f++;
4958 return (val%IMPORT_HASH_SIZE);
4961 /* Search for file FILENAME in import_hash_table.
4962 Return -2 if found, either a matching name or a matching inode.
4963 Otherwise, open the file and return a file descriptor if successful
4964 or -1 if unsuccessful. */
4967 lookup_import (filename, searchptr)
4969 struct file_name_list *searchptr;
4971 struct import_file *i;
4977 hashval = import_hash (filename);
4979 /* Attempt to find file in list of already included files */
4980 i = import_hash_table[hashval];
4983 if (!strcmp (filename, i->name))
4984 return -2; /* return found */
4987 /* Open it and try a match on inode/dev */
4988 fd = open_include_file (filename, searchptr);
4992 for (h = 0; h < IMPORT_HASH_SIZE; h++) {
4993 i = import_hash_table[h];
4995 /* Compare the inode and the device.
4996 Supposedly on some systems the inode is not a scalar. */
4997 if (!bcmp ((char *) &i->inode, (char *) &sb.st_ino, sizeof (sb.st_ino))
4998 && i->dev == sb.st_dev) {
5000 return -2; /* return found */
5005 return fd; /* Not found, return open file */
5008 /* Add the file FNAME, open on descriptor FD, to import_hash_table. */
5011 add_import (fd, fname)
5015 struct import_file *i;
5019 hashval = import_hash (fname);
5021 i = (struct import_file *)xmalloc (sizeof (struct import_file));
5022 i->name = (char *)xmalloc (strlen (fname)+1);
5023 strcpy (i->name, fname);
5024 bcopy ((char *) &sb.st_ino, (char *) &i->inode, sizeof (sb.st_ino));
5026 i->next = import_hash_table[hashval];
5027 import_hash_table[hashval] = i;
5030 /* Load the specified precompiled header into core, and verify its
5031 preconditions. PCF indicates the file descriptor to read, which must
5032 be a regular file. FNAME indicates the file name of the original
5033 header. *LIMIT will be set to an address one past the end of the file.
5034 If the preconditions of the file are not satisfied, the buffer is
5035 freed and we return 0. If the preconditions are satisfied, return
5036 the address of the buffer following the preconditions. The buffer, in
5037 this case, should never be freed because various pieces of it will
5038 be referred to until all precompiled strings are output at the end of
5042 check_precompiled (pcf, fname, limit)
5056 if (file_size_and_mode (pcf, &st_mode, &st_size) < 0)
5059 if (S_ISREG (st_mode))
5061 buf = xmalloc (st_size + 2);
5062 length = safe_read (pcf, buf, st_size);
5069 if (length > 0 && buf[length-1] != '\n')
5070 buf[length++] = '\n';
5073 *limit = buf + length;
5075 /* File is in core. Check the preconditions. */
5076 if (!check_preconditions (buf))
5078 for (cp = buf; *cp; cp++)
5081 fprintf (stderr, "Using preinclude %s\n", fname);
5087 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5093 /* PREC (null terminated) points to the preconditions of a
5094 precompiled header. These are a series of #define and #undef
5095 lines which must match the current contents of the hash
5098 check_preconditions (prec)
5105 lineend = (char *) index (prec, '\n');
5107 if (*prec++ != '#') {
5108 error ("Bad format encountered while reading precompiled file");
5111 if (!strncmp (prec, "define", 6)) {
5115 mdef = create_definition (prec, lineend, NULL_PTR);
5120 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5121 || (hp->type != T_MACRO && hp->type != T_CONST)
5122 || (hp->type == T_MACRO
5123 && !compare_defs (mdef.defn, hp->value.defn)
5124 && (mdef.defn->length != 2
5125 || mdef.defn->expansion[0] != '\n'
5126 || mdef.defn->expansion[1] != ' ')))
5128 } else if (!strncmp (prec, "undef", 5)) {
5133 while (is_hor_space[(U_CHAR) *prec])
5136 while (is_idchar[(U_CHAR) *prec])
5140 if (lookup (name, len, -1))
5143 error ("Bad format encountered while reading precompiled file");
5148 /* They all passed successfully */
5152 /* Process the main body of a precompiled file. BUF points to the
5153 string section of the file, following the preconditions. LIMIT is one
5154 character past the end. NAME is the name of the file being read
5155 in. OP is the main output buffer */
5157 pcfinclude (buf, limit, name, op)
5158 U_CHAR *buf, *limit, *name;
5165 /* First in the file comes 4 bytes indicating the number of strings, */
5166 /* in network byte order. (MSB first). */
5168 nstrings = (nstrings << 8) | *cp++;
5169 nstrings = (nstrings << 8) | *cp++;
5170 nstrings = (nstrings << 8) | *cp++;
5172 /* Looping over each string... */
5173 while (nstrings--) {
5174 U_CHAR *string_start;
5175 U_CHAR *endofthiskey;
5179 /* Each string starts with a STRINGDEF structure (str), followed */
5180 /* by the text of the string (string_start) */
5182 /* First skip to a longword boundary */
5183 /* ??? Why a 4-byte boundary? On all machines? */
5184 /* NOTE: This works correctly even if HOST_WIDE_INT
5185 is narrower than a pointer.
5186 Do not try risky measures here to get another type to use!
5187 Do not include stddef.h--it will fail! */
5188 if ((HOST_WIDE_INT) cp & 3)
5189 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5191 /* Now get the string. */
5192 str = (STRINGDEF *) cp;
5193 string_start = cp += sizeof (STRINGDEF);
5195 for (; *cp; cp++) /* skip the string */
5198 /* We need to macro expand the string here to ensure that the
5199 proper definition environment is in place. If it were only
5200 expanded when we find out it is needed, macros necessary for
5201 its proper expansion might have had their definitions changed. */
5202 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5203 /* Lineno is already set in the precompiled file */
5204 str->contents = tmpbuf.buf;
5205 str->len = tmpbuf.length;
5207 str->filename = name;
5208 str->output_mark = outbuf.bufp - outbuf.buf;
5211 *stringlist_tailp = str;
5212 stringlist_tailp = &str->chain;
5214 /* Next comes a fourbyte number indicating the number of keys */
5215 /* for this string. */
5217 nkeys = (nkeys << 8) | *cp++;
5218 nkeys = (nkeys << 8) | *cp++;
5219 nkeys = (nkeys << 8) | *cp++;
5221 /* If this number is -1, then the string is mandatory. */
5225 /* Otherwise, for each key, */
5226 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5227 KEYDEF *kp = (KEYDEF *) cp;
5230 /* It starts with a KEYDEF structure */
5231 cp += sizeof (KEYDEF);
5233 /* Find the end of the key. At the end of this for loop we
5234 advance CP to the start of the next key using this variable. */
5235 endofthiskey = cp + strlen (cp);
5238 /* Expand the key, and enter it into the hash table. */
5239 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5240 tmpbuf.bufp = tmpbuf.buf;
5242 while (is_hor_space[*tmpbuf.bufp])
5244 if (!is_idstart[*tmpbuf.bufp]
5245 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5250 hp = lookup (tmpbuf.bufp, -1, -1);
5253 install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
5255 else if (hp->type == T_PCSTRING) {
5256 kp->chain = hp->value.keydef;
5257 hp->value.keydef = kp;
5263 /* This output_line_command serves to switch us back to the current
5264 input file in case some of these strings get output (which will
5265 result in line commands for the header file being output). */
5266 output_line_command (&instack[indepth], op, 0, enter_file);
5269 /* Called from rescan when it hits a key for strings. Mark them all */
5270 /* used and clean up. */
5277 for (kp = hp->value.keydef; kp; kp = kp->chain)
5278 kp->str->writeflag = 1;
5282 /* Write the output, interspersing precompiled strings in their */
5283 /* appropriate places. */
5287 STRINGDEF *next_string;
5288 U_CHAR *cur_buf_loc;
5289 int line_command_len = 80;
5290 char *line_command = xmalloc (line_command_len);
5293 /* In each run through the loop, either cur_buf_loc == */
5294 /* next_string_loc, in which case we print a series of strings, or */
5295 /* it is less than next_string_loc, in which case we write some of */
5297 cur_buf_loc = outbuf.buf;
5298 next_string = stringlist;
5300 while (cur_buf_loc < outbuf.bufp || next_string) {
5302 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5303 if (next_string->writeflag) {
5304 len = 4 * strlen (next_string->filename) + 32;
5305 while (len > line_command_len)
5306 line_command = xrealloc (line_command,
5307 line_command_len *= 2);
5308 sprintf (line_command, "\n# %d ", next_string->lineno);
5309 strcpy (quote_string (line_command + strlen (line_command),
5310 next_string->filename),
5312 safe_write (fileno (stdout), line_command, strlen (line_command));
5313 safe_write (fileno (stdout), next_string->contents, next_string->len);
5315 next_string = next_string->chain;
5319 ? (next_string->output_mark
5320 - (cur_buf_loc - outbuf.buf))
5321 : outbuf.bufp - cur_buf_loc);
5323 safe_write (fileno (stdout), cur_buf_loc, len);
5327 free (line_command);
5330 /* Pass a directive through to the output file.
5331 BUF points to the contents of the directive, as a contiguous string.
5332 LIMIT points to the first character past the end of the directive.
5333 KEYWORD is the keyword-table entry for the directive. */
5336 pass_thru_directive (buf, limit, op, keyword)
5337 U_CHAR *buf, *limit;
5339 struct directive *keyword;
5341 register unsigned keyword_length = keyword->length;
5343 check_expand (op, 1 + keyword_length + (limit - buf));
5345 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5346 op->bufp += keyword_length;
5347 if (limit != buf && buf[0] != ' ')
5349 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5350 op->bufp += (limit - buf);
5353 /* Count the line we have just made in the output,
5354 to get in sync properly. */
5359 /* The arglist structure is built by do_define to tell
5360 collect_definition where the argument names begin. That
5361 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5362 would contain pointers to the strings x, y, and z.
5363 Collect_definition would then build a DEFINITION node,
5364 with reflist nodes pointing to the places x, y, and z had
5365 appeared. So the arglist is just convenience data passed
5366 between these two routines. It is not kept around after
5367 the current #define has been processed and entered into the
5371 struct arglist *next;
5378 /* Create a DEFINITION node from a #define directive. Arguments are
5379 as for do_define. */
5381 create_definition (buf, limit, op)
5382 U_CHAR *buf, *limit;
5385 U_CHAR *bp; /* temp ptr into input buffer */
5386 U_CHAR *symname; /* remember where symbol name starts */
5387 int sym_length; /* and how long it is */
5388 int line = instack[indepth].lineno;
5389 char *file = instack[indepth].nominal_fname;
5393 int arglengths = 0; /* Accumulate lengths of arg names
5394 plus number of args. */
5399 while (is_hor_space[*bp])
5402 symname = bp; /* remember where it starts */
5403 sym_length = check_macro_name (bp, "macro");
5406 /* Lossage will occur if identifiers or control keywords are broken
5407 across lines using backslash. This is not the right place to take
5411 struct arglist *arg_ptrs = NULL;
5414 bp++; /* skip '(' */
5415 SKIP_WHITE_SPACE (bp);
5417 /* Loop over macro argument names. */
5418 while (*bp != ')') {
5419 struct arglist *temp;
5421 temp = (struct arglist *) alloca (sizeof (struct arglist));
5423 temp->next = arg_ptrs;
5424 temp->argno = argno++;
5425 temp->rest_args = 0;
5429 pedwarn ("another parameter follows `%s'",
5432 if (!is_idstart[*bp])
5433 pedwarn ("invalid character in macro parameter name");
5435 /* Find the end of the arg name. */
5436 while (is_idchar[*bp]) {
5438 /* do we have a "special" rest-args extension here? */
5439 if (limit - bp > REST_EXTENSION_LENGTH &&
5440 strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5442 temp->rest_args = 1;
5446 temp->length = bp - temp->name;
5448 bp += REST_EXTENSION_LENGTH;
5449 arglengths += temp->length + 2;
5450 SKIP_WHITE_SPACE (bp);
5451 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5452 error ("badly punctuated parameter list in `#define'");
5457 SKIP_WHITE_SPACE (bp);
5458 /* A comma at this point can only be followed by an identifier. */
5459 if (!is_idstart[*bp]) {
5460 error ("badly punctuated parameter list in `#define'");
5465 error ("unterminated parameter list in `#define'");
5469 struct arglist *otemp;
5471 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5472 if (temp->length == otemp->length &&
5473 strncmp (temp->name, otemp->name, temp->length) == 0) {
5476 name = (U_CHAR *) alloca (temp->length + 1);
5477 (void) strncpy (name, temp->name, temp->length);
5478 name[temp->length] = '\0';
5479 error ("duplicate argument name `%s' in `#define'", name);
5485 ++bp; /* skip paren */
5486 SKIP_WHITE_SPACE (bp);
5487 /* now everything from bp before limit is the definition. */
5488 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5489 defn->rest_args = rest_args;
5491 /* Now set defn->args.argnames to the result of concatenating
5492 the argument names in reverse order
5493 with comma-space between them. */
5494 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5496 struct arglist *temp;
5498 for (temp = arg_ptrs; temp; temp = temp->next) {
5499 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5501 if (temp->next != 0) {
5502 defn->args.argnames[i++] = ',';
5503 defn->args.argnames[i++] = ' ';
5506 defn->args.argnames[i] = 0;
5509 /* Simple expansion or empty definition. */
5513 if (is_hor_space[*bp]) {
5515 SKIP_WHITE_SPACE (bp);
5518 case '!': case '"': case '#': case '%': case '&': case '\'':
5519 case ')': case '*': case '+': case ',': case '-': case '.':
5520 case '/': case ':': case ';': case '<': case '=': case '>':
5521 case '?': case '[': case '\\': case ']': case '^': case '{':
5522 case '|': case '}': case '~':
5523 warning ("missing white space after `#define %.*s'",
5524 sym_length, symname);
5528 pedwarn ("missing white space after `#define %.*s'",
5529 sym_length, symname);
5534 /* Now everything from bp before limit is the definition. */
5535 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5536 defn->args.argnames = (U_CHAR *) "";
5542 /* OP is null if this is a predefinition */
5543 defn->predefined = !op;
5545 mdef.symnam = symname;
5546 mdef.symlen = sym_length;
5555 /* Process a #define command.
5556 BUF points to the contents of the #define command, as a contiguous string.
5557 LIMIT points to the first character past the end of the definition.
5558 KEYWORD is the keyword-table entry for #define. */
5561 do_define (buf, limit, op, keyword)
5562 U_CHAR *buf, *limit;
5564 struct directive *keyword;
5569 /* If this is a precompiler run (with -pcp) pass thru #define commands. */
5570 if (pcp_outfile && op)
5571 pass_thru_directive (buf, limit, op, keyword);
5573 mdef = create_definition (buf, limit, op);
5577 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5581 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5583 /* Redefining a precompiled key is ok. */
5584 if (hp->type == T_PCSTRING)
5586 /* Redefining a macro is ok if the definitions are the same. */
5587 else if (hp->type == T_MACRO)
5588 ok = ! compare_defs (mdef.defn, hp->value.defn);
5589 /* Redefining a constant is ok with -D. */
5590 else if (hp->type == T_CONST)
5591 ok = ! done_initializing;
5592 /* Print the warning if it's not ok. */
5594 U_CHAR *msg; /* what pain... */
5596 /* If we are passing through #define and #undef directives, do
5597 that for this re-definition now. */
5598 if (debug_output && op)
5599 pass_thru_directive (buf, limit, op, keyword);
5601 msg = (U_CHAR *) alloca (mdef.symlen + 22);
5603 bcopy ((char *) mdef.symnam, (char *) (msg + 1), mdef.symlen);
5604 strcpy ((char *) (msg + mdef.symlen + 1), "' redefined");
5606 if (hp->type == T_MACRO)
5607 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5608 "this is the location of the previous definition");
5610 /* Replace the old definition. */
5612 hp->value.defn = mdef.defn;
5614 /* If we are passing through #define and #undef directives, do
5615 that for this new definition now. */
5616 if (debug_output && op)
5617 pass_thru_directive (buf, limit, op, keyword);
5618 install (mdef.symnam, mdef.symlen, T_MACRO,
5619 (char *) mdef.defn, hashcode);
5630 /* Check a purported macro name SYMNAME, and yield its length.
5631 USAGE is the kind of name this is intended for. */
5634 check_macro_name (symname, usage)
5641 for (p = symname; is_idchar[*p]; p++)
5643 sym_length = p - symname;
5644 if (sym_length == 0)
5645 error ("invalid %s name", usage);
5646 else if (!is_idstart[*symname]) {
5647 U_CHAR *msg; /* what pain... */
5648 msg = (U_CHAR *) alloca (sym_length + 1);
5649 bcopy ((char *) symname, (char *) msg, sym_length);
5650 msg[sym_length] = 0;
5651 error ("invalid %s name `%s'", usage, msg);
5653 if (! strncmp (symname, "defined", 7) && sym_length == 7)
5654 error ("invalid %s name `defined'", usage);
5660 * return zero if two DEFINITIONs are isomorphic
5663 compare_defs (d1, d2)
5664 DEFINITION *d1, *d2;
5666 register struct reflist *a1, *a2;
5667 register U_CHAR *p1 = d1->expansion;
5668 register U_CHAR *p2 = d2->expansion;
5671 if (d1->nargs != d2->nargs)
5673 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5675 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5676 a1 = a1->next, a2 = a2->next) {
5677 if (!((a1->nchars == a2->nchars && ! strncmp (p1, p2, a1->nchars))
5678 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5679 || a1->argno != a2->argno
5680 || a1->stringify != a2->stringify
5681 || a1->raw_before != a2->raw_before
5682 || a1->raw_after != a2->raw_after)
5690 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5691 p2, d2->length - (p2 - d2->expansion), 1))
5696 /* Return 1 if two parts of two macro definitions are effectively different.
5697 One of the parts starts at BEG1 and has LEN1 chars;
5698 the other has LEN2 chars at BEG2.
5699 Any sequence of whitespace matches any other sequence of whitespace.
5700 FIRST means these parts are the first of a macro definition;
5701 so ignore leading whitespace entirely.
5702 LAST means these parts are the last of a macro definition;
5703 so ignore trailing whitespace entirely. */
5706 comp_def_part (first, beg1, len1, beg2, len2, last)
5708 U_CHAR *beg1, *beg2;
5712 register U_CHAR *end1 = beg1 + len1;
5713 register U_CHAR *end2 = beg2 + len2;
5715 while (beg1 != end1 && is_space[*beg1]) beg1++;
5716 while (beg2 != end2 && is_space[*beg2]) beg2++;
5719 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5720 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5722 while (beg1 != end1 && beg2 != end2) {
5723 if (is_space[*beg1] && is_space[*beg2]) {
5724 while (beg1 != end1 && is_space[*beg1]) beg1++;
5725 while (beg2 != end2 && is_space[*beg2]) beg2++;
5726 } else if (*beg1 == *beg2) {
5730 return (beg1 != end1) || (beg2 != end2);
5733 /* Read a replacement list for a macro with parameters.
5734 Build the DEFINITION structure.
5735 Reads characters of text starting at BUF until END.
5736 ARGLIST specifies the formal parameters to look for
5737 in the text of the definition; NARGS is the number of args
5738 in that list, or -1 for a macro name that wants no argument list.
5739 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5740 and NAMELEN is its length in characters.
5742 Note that comments and backslash-newlines have already been deleted
5743 from the argument. */
5745 /* Leading and trailing Space, Tab, etc. are converted to markers
5746 Newline Space, Newline Tab, etc.
5747 Newline Space makes a space in the final output
5748 but is discarded if stringified. (Newline Tab is similar but
5749 makes a Tab instead.)
5751 If there is no trailing whitespace, a Newline Space is added at the end
5752 to prevent concatenation that would be contrary to the standard. */
5755 collect_expansion (buf, end, nargs, arglist)
5758 struct arglist *arglist;
5761 register U_CHAR *p, *limit, *lastp, *exp_p;
5762 struct reflist *endpat = NULL;
5763 /* Pointer to first nonspace after last ## seen. */
5765 /* Pointer to first nonspace after last single-# seen. */
5766 U_CHAR *stringify = 0;
5767 /* How those tokens were spelled. */
5768 enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
5769 enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
5771 int expected_delimiter = '\0';
5773 /* Scan thru the replacement list, ignoring comments and quoted
5774 strings, picking up on the macro calls. It does a linear search
5775 thru the arg list on every potential symbol. Profiling might say
5776 that something smarter should happen. */
5781 /* Find the beginning of the trailing whitespace. */
5782 /* Find end of leading whitespace. */
5785 while (p < limit && is_space[limit[-1]]) limit--;
5786 while (p < limit && is_space[*p]) p++;
5788 /* Allocate space for the text in the macro definition.
5789 Leading and trailing whitespace chars need 2 bytes each.
5790 Each other input char may or may not need 1 byte,
5791 so this is an upper bound.
5792 The extra 2 are for invented trailing newline-marker and final null. */
5793 maxsize = (sizeof (DEFINITION)
5794 + 2 * (end - limit) + 2 * (p - buf)
5796 defn = (DEFINITION *) xcalloc (1, maxsize);
5798 defn->nargs = nargs;
5799 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5804 /* Convert leading whitespace to Newline-markers. */
5805 while (p < limit && is_space[*p]) {
5812 : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
5813 error ("`##' at start of macro definition");
5814 p += p[0] == '#' ? 2 : 4;
5817 /* Process the main body of the definition. */
5819 int skipped_arg = 0;
5820 register U_CHAR c = *p++;
5828 if (expected_delimiter != '\0') {
5829 if (c == expected_delimiter)
5830 expected_delimiter = '\0';
5832 expected_delimiter = c;
5836 if (p < limit && expected_delimiter) {
5837 /* In a string, backslash goes through
5838 and makes next char ordinary. */
5844 if (!expected_delimiter && *p == ':') {
5845 /* %: is not a digraph if preceded by an odd number of '<'s. */
5847 while (buf < p0 && p0[-1] == '<')
5850 /* Treat %:%: as ## and %: as #. */
5851 if (p[1] == '%' && p[2] == ':') {
5853 goto sharp_sharp_token;
5864 /* # is ordinary inside a string. */
5865 if (expected_delimiter)
5869 /* ##: concatenate preceding and following tokens. */
5870 /* Take out the first #, discard preceding whitespace. */
5872 while (exp_p > lastp && is_hor_space[exp_p[-1]])
5874 /* Skip the second #. */
5876 concat_sharp_token_type = c;
5877 if (is_hor_space[*p]) {
5878 concat_sharp_token_type++;
5880 SKIP_WHITE_SPACE (p);
5884 error ("`##' at end of macro definition");
5885 } else if (nargs >= 0) {
5886 /* Single #: stringify following argument ref.
5887 Don't leave the # in the expansion. */
5890 stringify_sharp_token_type = c;
5891 if (is_hor_space[*p]) {
5892 stringify_sharp_token_type++;
5894 SKIP_WHITE_SPACE (p);
5896 if (! is_idstart[*p] || nargs == 0)
5897 error ("`#' operator is not followed by a macro argument name");
5904 /* In -traditional mode, recognize arguments inside strings and
5905 and character constants, and ignore special properties of #.
5906 Arguments inside strings are considered "stringified", but no
5907 extra quote marks are supplied. */
5911 if (expected_delimiter != '\0') {
5912 if (c == expected_delimiter)
5913 expected_delimiter = '\0';
5915 expected_delimiter = c;
5919 /* Backslash quotes delimiters and itself, but not macro args. */
5920 if (expected_delimiter != 0 && p < limit
5921 && (*p == expected_delimiter || *p == '\\')) {
5928 if (expected_delimiter != '\0') /* No comments inside strings. */
5931 /* If we find a comment that wasn't removed by handle_directive,
5932 this must be -traditional. So replace the comment with
5936 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
5939 /* Mark this as a concatenation-point, as if it had been ##. */
5947 /* Handle the start of a symbol. */
5948 if (is_idchar[c] && nargs > 0) {
5949 U_CHAR *id_beg = p - 1;
5953 while (p != limit && is_idchar[*p]) p++;
5954 id_len = p - id_beg;
5956 if (is_idstart[c]) {
5957 register struct arglist *arg;
5959 for (arg = arglist; arg != NULL; arg = arg->next) {
5960 struct reflist *tpat;
5962 if (arg->name[0] == c
5963 && arg->length == id_len
5964 && strncmp (arg->name, id_beg, id_len) == 0) {
5965 if (expected_delimiter && warn_stringify) {
5967 warning ("macro argument `%.*s' is stringified.",
5970 warning ("macro arg `%.*s' would be stringified with -traditional.",
5974 /* If ANSI, don't actually substitute inside a string. */
5975 if (!traditional && expected_delimiter)
5977 /* make a pat node for this arg and append it to the end of
5979 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
5982 = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
5983 tpat->raw_after = NO_SHARP_TOKEN;
5984 tpat->rest_args = arg->rest_args;
5986 = ((traditional ? expected_delimiter : stringify == id_beg)
5987 ? stringify_sharp_token_type : NO_SHARP_TOKEN);
5990 defn->pattern = tpat;
5992 endpat->next = tpat;
5995 tpat->argno = arg->argno;
5996 tpat->nchars = exp_p - lastp;
5998 register U_CHAR *p1 = p;
5999 SKIP_WHITE_SPACE (p1);
6002 : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
6003 tpat->raw_after = p1[0] + (p != p1);
6005 lastp = exp_p; /* place to start copying from next time */
6012 /* If this was not a macro arg, copy it into the expansion. */
6013 if (! skipped_arg) {
6014 register U_CHAR *lim1 = p;
6018 if (stringify == id_beg)
6019 error ("`#' operator should be followed by a macro argument name");
6024 if (!traditional && expected_delimiter == 0) {
6025 /* There is no trailing whitespace, so invent some in ANSI mode.
6026 But not if "inside a string" (which in ANSI mode
6027 happens only for -D option). */
6034 defn->length = exp_p - defn->expansion;
6036 /* Crash now if we overrun the allocated size. */
6037 if (defn->length + 1 > maxsize)
6041 /* This isn't worth the time it takes. */
6042 /* give back excess storage */
6043 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
6050 do_assert (buf, limit, op, keyword)
6051 U_CHAR *buf, *limit;
6053 struct directive *keyword;
6055 U_CHAR *bp; /* temp ptr into input buffer */
6056 U_CHAR *symname; /* remember where symbol name starts */
6057 int sym_length; /* and how long it is */
6058 struct arglist *tokens = NULL;
6060 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6061 pedwarn ("ANSI C does not allow `#assert'");
6065 while (is_hor_space[*bp])
6068 symname = bp; /* remember where it starts */
6069 sym_length = check_macro_name (bp, "assertion");
6071 /* #define doesn't do this, but we should. */
6072 SKIP_WHITE_SPACE (bp);
6074 /* Lossage will occur if identifiers or control tokens are broken
6075 across lines using backslash. This is not the right place to take
6079 error ("missing token-sequence in `#assert'");
6086 bp++; /* skip '(' */
6087 SKIP_WHITE_SPACE (bp);
6089 tokens = read_token_list (&bp, limit, &error_flag);
6093 error ("empty token-sequence in `#assert'");
6097 ++bp; /* skip paren */
6098 SKIP_WHITE_SPACE (bp);
6101 /* If this name isn't already an assertion name, make it one.
6102 Error if it was already in use in some other way. */
6105 ASSERTION_HASHNODE *hp;
6106 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6107 struct tokenlist_list *value
6108 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
6110 hp = assertion_lookup (symname, sym_length, hashcode);
6112 if (sym_length == 7 && ! strncmp (symname, "defined", sym_length))
6113 error ("`defined' redefined as assertion");
6114 hp = assertion_install (symname, sym_length, hashcode);
6117 /* Add the spec'd token-sequence to the list of such. */
6118 value->tokens = tokens;
6119 value->next = hp->value;
6127 do_unassert (buf, limit, op, keyword)
6128 U_CHAR *buf, *limit;
6130 struct directive *keyword;
6132 U_CHAR *bp; /* temp ptr into input buffer */
6133 U_CHAR *symname; /* remember where symbol name starts */
6134 int sym_length; /* and how long it is */
6136 struct arglist *tokens = NULL;
6137 int tokens_specified = 0;
6139 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6140 pedwarn ("ANSI C does not allow `#unassert'");
6144 while (is_hor_space[*bp])
6147 symname = bp; /* remember where it starts */
6148 sym_length = check_macro_name (bp, "assertion");
6150 /* #define doesn't do this, but we should. */
6151 SKIP_WHITE_SPACE (bp);
6153 /* Lossage will occur if identifiers or control tokens are broken
6154 across lines using backslash. This is not the right place to take
6160 bp++; /* skip '(' */
6161 SKIP_WHITE_SPACE (bp);
6163 tokens = read_token_list (&bp, limit, &error_flag);
6167 error ("empty token list in `#unassert'");
6171 tokens_specified = 1;
6173 ++bp; /* skip paren */
6174 SKIP_WHITE_SPACE (bp);
6178 ASSERTION_HASHNODE *hp;
6179 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6180 struct tokenlist_list *tail, *prev;
6182 hp = assertion_lookup (symname, sym_length, hashcode);
6186 /* If no token list was specified, then eliminate this assertion
6188 if (! tokens_specified) {
6189 struct tokenlist_list *next;
6190 for (tail = hp->value; tail; tail = next) {
6192 free_token_list (tail->tokens);
6195 delete_assertion (hp);
6197 /* If a list of tokens was given, then delete any matching list. */
6202 struct tokenlist_list *next = tail->next;
6203 if (compare_token_lists (tail->tokens, tokens)) {
6207 hp->value = tail->next;
6208 free_token_list (tail->tokens);
6221 /* Test whether there is an assertion named NAME
6222 and optionally whether it has an asserted token list TOKENS.
6223 NAME is not null terminated; its length is SYM_LENGTH.
6224 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6227 check_assertion (name, sym_length, tokens_specified, tokens)
6230 int tokens_specified;
6231 struct arglist *tokens;
6233 ASSERTION_HASHNODE *hp;
6234 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6236 if (pedantic && !instack[indepth].system_header_p)
6237 pedwarn ("ANSI C does not allow testing assertions");
6239 hp = assertion_lookup (name, sym_length, hashcode);
6241 /* It is not an assertion; just return false. */
6244 /* If no token list was specified, then value is 1. */
6245 if (! tokens_specified)
6249 struct tokenlist_list *tail;
6253 /* If a list of tokens was given,
6254 then succeed if the assertion records a matching list. */
6257 if (compare_token_lists (tail->tokens, tokens))
6262 /* Fail if the assertion has no matching list. */
6267 /* Compare two lists of tokens for equality including order of tokens. */
6270 compare_token_lists (l1, l2)
6271 struct arglist *l1, *l2;
6274 if (l1->length != l2->length)
6276 if (strncmp (l1->name, l2->name, l1->length))
6282 /* Succeed if both lists end at the same time. */
6286 /* Read a space-separated list of tokens ending in a close parenthesis.
6287 Return a list of strings, in the order they were written.
6288 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6289 Parse the text starting at *BPP, and update *BPP.
6290 Don't parse beyond LIMIT. */
6292 static struct arglist *
6293 read_token_list (bpp, limit, error_flag)
6298 struct arglist *token_ptrs = 0;
6304 /* Loop over the assertion value tokens. */
6306 struct arglist *temp;
6310 /* Find the end of the token. */
6314 } else if (*bp == ')') {
6319 } else if (*bp == '"' || *bp == '\'')
6320 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6322 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6323 && *bp != '"' && *bp != '\'' && bp != limit)
6326 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6327 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6328 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6329 temp->name[bp - beg] = 0;
6330 temp->next = token_ptrs;
6332 temp->length = bp - beg;
6334 SKIP_WHITE_SPACE (bp);
6337 error ("unterminated token sequence in `#assert' or `#unassert'");
6344 /* We accumulated the names in reverse order.
6345 Now reverse them to get the proper order. */
6347 register struct arglist *prev = 0, *this, *next;
6348 for (this = token_ptrs; this; this = next) {
6358 free_token_list (tokens)
6359 struct arglist *tokens;
6362 struct arglist *next = tokens->next;
6363 free (tokens->name);
6370 * Install a name in the assertion hash table.
6372 * If LEN is >= 0, it is the length of the name.
6373 * Otherwise, compute the length by scanning the entire name.
6375 * If HASH is >= 0, it is the precomputed hash code.
6376 * Otherwise, compute the hash code.
6378 static ASSERTION_HASHNODE *
6379 assertion_install (name, len, hash)
6384 register ASSERTION_HASHNODE *hp;
6385 register int i, bucket;
6386 register U_CHAR *p, *q;
6388 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6389 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6391 hp->bucket_hdr = &assertion_hashtab[bucket];
6392 hp->next = assertion_hashtab[bucket];
6393 assertion_hashtab[bucket] = hp;
6395 if (hp->next != NULL)
6396 hp->next->prev = hp;
6399 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6402 for (i = 0; i < len; i++)
6409 * find the most recent hash node for name name (ending with first
6410 * non-identifier char) installed by install
6412 * If LEN is >= 0, it is the length of the name.
6413 * Otherwise, compute the length by scanning the entire name.
6415 * If HASH is >= 0, it is the precomputed hash code.
6416 * Otherwise, compute the hash code.
6418 static ASSERTION_HASHNODE *
6419 assertion_lookup (name, len, hash)
6424 register ASSERTION_HASHNODE *bucket;
6426 bucket = assertion_hashtab[hash];
6428 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
6430 bucket = bucket->next;
6436 delete_assertion (hp)
6437 ASSERTION_HASHNODE *hp;
6440 if (hp->prev != NULL)
6441 hp->prev->next = hp->next;
6442 if (hp->next != NULL)
6443 hp->next->prev = hp->prev;
6445 /* make sure that the bucket chain header that
6446 the deleted guy was on points to the right thing afterwards. */
6447 if (hp == *hp->bucket_hdr)
6448 *hp->bucket_hdr = hp->next;
6454 * interpret #line command. Remembers previously seen fnames
6455 * in its very own hash table.
6457 #define FNAME_HASHSIZE 37
6460 do_line (buf, limit, op, keyword)
6461 U_CHAR *buf, *limit;
6463 struct directive *keyword;
6465 register U_CHAR *bp;
6466 FILE_BUF *ip = &instack[indepth];
6469 enum file_change_code file_change = same_file;
6471 /* Expand any macros. */
6472 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6474 /* Point to macroexpanded line, which is null-terminated now. */
6476 SKIP_WHITE_SPACE (bp);
6478 if (!isdigit (*bp)) {
6479 error ("invalid format `#line' command");
6483 /* The Newline at the end of this line remains to be processed.
6484 To put the next line at the specified line number,
6485 we must store a line number now that is one less. */
6486 new_lineno = atoi (bp) - 1;
6488 /* NEW_LINENO is one less than the actual line number here. */
6489 if (pedantic && new_lineno < 0)
6490 pedwarn ("line number out of range in `#line' command");
6492 /* skip over the line number. */
6493 while (isdigit (*bp))
6496 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6497 if (*bp && !is_space[*bp]) {
6498 error ("invalid format `#line' command");
6503 SKIP_WHITE_SPACE (bp);
6506 static HASHNODE *fname_table[FNAME_HASHSIZE];
6507 HASHNODE *hp, **hash_bucket;
6513 /* Turn the file name, which is a character string literal,
6514 into a null-terminated string. Do this in place. */
6517 switch ((*p++ = *bp++)) {
6519 error ("invalid format `#line' command");
6524 char *bpc = (char *) bp;
6525 int c = parse_escape (&bpc);
6526 bp = (U_CHAR *) bpc;
6539 fname_length = p - fname;
6541 SKIP_WHITE_SPACE (bp);
6544 pedwarn ("garbage at end of `#line' command");
6546 file_change = enter_file;
6547 else if (*bp == '2')
6548 file_change = leave_file;
6549 else if (*bp == '3')
6550 ip->system_header_p = 1;
6551 else if (*bp == '4')
6552 ip->system_header_p = 2;
6554 error ("invalid format `#line' command");
6559 SKIP_WHITE_SPACE (bp);
6561 ip->system_header_p = 1;
6563 SKIP_WHITE_SPACE (bp);
6566 ip->system_header_p = 2;
6568 SKIP_WHITE_SPACE (bp);
6571 error ("invalid format `#line' command");
6577 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6578 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6579 if (hp->length == fname_length &&
6580 strncmp (hp->value.cpval, fname, fname_length) == 0) {
6581 ip->nominal_fname = hp->value.cpval;
6585 /* Didn't find it; cons up a new one. */
6586 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6587 hp->next = *hash_bucket;
6590 hp->length = fname_length;
6591 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6592 bcopy (fname, hp->value.cpval, fname_length);
6595 error ("invalid format `#line' command");
6599 ip->lineno = new_lineno;
6600 output_line_command (ip, op, 0, file_change);
6601 check_expand (op, ip->length - (ip->bufp - ip->buf));
6606 * remove the definition of a symbol from the symbol table.
6607 * according to un*x /lib/cpp, it is not an error to undef
6608 * something that has no definitions, so it isn't one here either.
6612 do_undef (buf, limit, op, keyword)
6613 U_CHAR *buf, *limit;
6615 struct directive *keyword;
6619 U_CHAR *orig_buf = buf;
6621 /* If this is a precompiler run (with -pcp) pass thru #undef commands. */
6622 if (pcp_outfile && op)
6623 pass_thru_directive (buf, limit, op, keyword);
6625 SKIP_WHITE_SPACE (buf);
6626 sym_length = check_macro_name (buf, "macro");
6628 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6629 /* If we are generating additional info for debugging (with -g) we
6630 need to pass through all effective #undef commands. */
6631 if (debug_output && op)
6632 pass_thru_directive (orig_buf, limit, op, keyword);
6633 if (hp->type != T_MACRO)
6634 warning ("undefining `%s'", hp->name);
6640 SKIP_WHITE_SPACE (buf);
6642 pedwarn ("garbage after `#undef' directive");
6648 * Report an error detected by the program we are processing.
6649 * Use the text of the line in the error message.
6650 * (We use error because it prints the filename & line#.)
6654 do_error (buf, limit, op, keyword)
6655 U_CHAR *buf, *limit;
6657 struct directive *keyword;
6659 int length = limit - buf;
6660 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6661 bcopy ((char *) buf, (char *) copy, length);
6663 SKIP_WHITE_SPACE (copy);
6664 error ("#error %s", copy);
6669 * Report a warning detected by the program we are processing.
6670 * Use the text of the line in the warning message, then continue.
6671 * (We use error because it prints the filename & line#.)
6675 do_warning (buf, limit, op, keyword)
6676 U_CHAR *buf, *limit;
6678 struct directive *keyword;
6680 int length = limit - buf;
6681 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6682 bcopy ((char *) buf, (char *) copy, length);
6684 SKIP_WHITE_SPACE (copy);
6685 warning ("#warning %s", copy);
6689 /* Remember the name of the current file being read from so that we can
6690 avoid ever including it again. */
6696 FILE_BUF *ip = NULL;
6698 for (i = indepth; i >= 0; i--)
6699 if (instack[i].fname != NULL) {
6705 struct file_name_list *new;
6707 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
6708 new->next = dont_repeat_files;
6709 dont_repeat_files = new;
6710 new->fname = savestring (ip->fname);
6711 new->control_macro = 0;
6712 new->got_name_map = 0;
6713 new->c_system_include_path = 0;
6718 /* #ident has already been copied to the output file, so just ignore it. */
6721 do_ident (buf, limit)
6722 U_CHAR *buf, *limit;
6726 FILE_BUF *op = &outbuf;
6728 /* Allow #ident in system headers, since that's not user's fault. */
6729 if (pedantic && !instack[indepth].system_header_p)
6730 pedwarn ("ANSI C does not allow `#ident'");
6732 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6733 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6734 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6735 limit = buf + (trybuf.bufp - trybuf.buf);
6736 len = (limit - buf);
6739 /* Output directive name. */
6740 check_expand (op, 7);
6741 bcopy ("#ident ", (char *) op->bufp, 7);
6744 /* Output the expanded argument line. */
6745 check_expand (op, len);
6746 bcopy ((char *) buf, (char *) op->bufp, len);
6752 /* #pragma and its argument line have already been copied to the output file.
6753 Just check for some recognized pragmas that need validation here. */
6756 do_pragma (buf, limit)
6757 U_CHAR *buf, *limit;
6759 SKIP_WHITE_SPACE (buf);
6760 if (!strncmp (buf, "once", 4)) {
6761 /* Allow #pragma once in system headers, since that's not the user's
6763 if (!instack[indepth].system_header_p)
6764 warning ("`#pragma once' is obsolete");
6768 if (!strncmp (buf, "implementation", 14)) {
6769 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6770 been included yet. */
6771 struct file_name_list *ptr;
6772 U_CHAR *p = buf + 14, *fname, *inc_fname;
6773 SKIP_WHITE_SPACE (p);
6774 if (*p == '\n' || *p != '\"')
6778 if (p = (U_CHAR *) index (fname, '\"'))
6781 for (ptr = all_include_files; ptr; ptr = ptr->next) {
6782 inc_fname = (U_CHAR *) rindex (ptr->fname, '/');
6783 inc_fname = inc_fname ? inc_fname + 1 : (U_CHAR *) ptr->fname;
6784 if (inc_fname && !strcmp (inc_fname, fname))
6785 warning ("`#pragma implementation' for `%s' appears after file is included",
6794 /* This was a fun hack, but #pragma seems to start to be useful.
6795 By failing to recognize it, we pass it through unchanged to cc1. */
6798 * the behavior of the #pragma directive is implementation defined.
6799 * this implementation defines it as follows.
6806 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6809 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6811 execl ("/usr/games/hack", "#pragma", 0);
6812 execl ("/usr/games/rogue", "#pragma", 0);
6813 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6814 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6816 fatal ("You are in a maze of twisty compiler features, all different");
6820 /* Just ignore #sccs, on systems where we define it at all. */
6826 pedwarn ("ANSI C does not allow `#sccs'");
6831 * handle #if command by
6832 * 1) inserting special `defined' keyword into the hash table
6833 * that gets turned into 0 or 1 by special_symbol (thus,
6834 * if the luser has a symbol called `defined' already, it won't
6835 * work inside the #if command)
6836 * 2) rescan the input into a temporary output buffer
6837 * 3) pass the output buffer to the yacc parser and collect a value
6838 * 4) clean up the mess left from steps 1 and 2.
6839 * 5) call conditional_skip to skip til the next #endif (etc.),
6840 * or not, depending on the value from step 3.
6844 do_if (buf, limit, op, keyword)
6845 U_CHAR *buf, *limit;
6847 struct directive *keyword;
6849 HOST_WIDE_INT value;
6850 FILE_BUF *ip = &instack[indepth];
6852 value = eval_if_expression (buf, limit - buf);
6853 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
6858 * handle a #elif directive by not changing if_stack either.
6859 * see the comment above do_else.
6863 do_elif (buf, limit, op, keyword)
6864 U_CHAR *buf, *limit;
6866 struct directive *keyword;
6868 HOST_WIDE_INT value;
6869 FILE_BUF *ip = &instack[indepth];
6871 if (if_stack == instack[indepth].if_stack) {
6872 error ("`#elif' not within a conditional");
6875 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
6876 error ("`#elif' after `#else'");
6877 fprintf (stderr, " (matches line %d", if_stack->lineno);
6878 if (if_stack->fname != NULL && ip->fname != NULL &&
6879 strcmp (if_stack->fname, ip->nominal_fname) != 0)
6880 fprintf (stderr, ", file %s", if_stack->fname);
6881 fprintf (stderr, ")\n");
6883 if_stack->type = T_ELIF;
6886 if (if_stack->if_succeeded)
6887 skip_if_group (ip, 0, op);
6889 value = eval_if_expression (buf, limit - buf);
6891 skip_if_group (ip, 0, op);
6893 ++if_stack->if_succeeded; /* continue processing input */
6894 output_line_command (ip, op, 1, same_file);
6901 * evaluate a #if expression in BUF, of length LENGTH,
6902 * then parse the result as a C expression and return the value as an int.
6904 static HOST_WIDE_INT
6905 eval_if_expression (buf, length)
6910 HASHNODE *save_defined;
6911 HOST_WIDE_INT value;
6913 save_defined = install ("defined", -1, T_SPEC_DEFINED, NULL_PTR, -1);
6915 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
6917 delete_macro (save_defined); /* clean up special symbol */
6919 value = parse_c_expression (temp_obuf.buf);
6921 free (temp_obuf.buf);
6927 * routine to handle ifdef/ifndef. Try to look up the symbol,
6928 * then do or don't skip to the #endif/#else/#elif depending
6929 * on what directive is actually being processed.
6933 do_xifdef (buf, limit, op, keyword)
6934 U_CHAR *buf, *limit;
6936 struct directive *keyword;
6939 FILE_BUF *ip = &instack[indepth];
6941 int start_of_file = 0;
6942 U_CHAR *control_macro = 0;
6944 /* Detect a #ifndef at start of file (not counting comments). */
6945 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
6946 U_CHAR *p = ip->buf;
6947 while (p != directive_start) {
6951 else if (c == '/' && p != ip->bufp && *p == '*') {
6952 /* Skip this comment. */
6954 U_CHAR *save_bufp = ip->bufp;
6956 p = skip_to_end_of_comment (ip, &junk, 1);
6957 ip->bufp = save_bufp;
6962 /* If we get here, this conditional is the beginning of the file. */
6967 /* Discard leading and trailing whitespace. */
6968 SKIP_WHITE_SPACE (buf);
6969 while (limit != buf && is_hor_space[limit[-1]]) limit--;
6971 /* Find the end of the identifier at the beginning. */
6972 for (end = buf; is_idchar[*end]; end++);
6975 skip = (keyword->type == T_IFDEF);
6977 pedwarn (end == limit ? "`#%s' with no argument"
6978 : "`#%s' argument starts with punctuation",
6983 if (pedantic && buf[0] >= '0' && buf[0] <= '9')
6984 pedwarn ("`#%s' argument starts with a digit", keyword->name);
6985 else if (end != limit && !traditional)
6986 pedwarn ("garbage at end of `#%s' argument", keyword->name);
6988 hp = lookup (buf, end-buf, -1);
6991 /* Output a precondition for this macro. */
6993 (hp->type == T_CONST
6994 || (hp->type == T_MACRO && hp->value.defn->predefined)))
6995 fprintf (pcp_outfile, "#define %s\n", hp->name);
6998 fprintf (pcp_outfile, "#undef ");
6999 while (is_idchar[*cp]) /* Ick! */
7000 fputc (*cp++, pcp_outfile);
7001 putc ('\n', pcp_outfile);
7005 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
7006 if (start_of_file && !skip) {
7007 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
7008 bcopy ((char *) buf, (char *) control_macro, end - buf);
7009 control_macro[end - buf] = 0;
7013 conditional_skip (ip, skip, T_IF, control_macro, op);
7017 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
7018 If this is a #ifndef starting at the beginning of a file,
7019 CONTROL_MACRO is the macro name tested by the #ifndef.
7020 Otherwise, CONTROL_MACRO is 0. */
7023 conditional_skip (ip, skip, type, control_macro, op)
7026 enum node_type type;
7027 U_CHAR *control_macro;
7030 IF_STACK_FRAME *temp;
7032 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7033 temp->fname = ip->nominal_fname;
7034 temp->lineno = ip->lineno;
7035 temp->next = if_stack;
7036 temp->control_macro = control_macro;
7039 if_stack->type = type;
7042 skip_if_group (ip, 0, op);
7045 ++if_stack->if_succeeded;
7046 output_line_command (ip, &outbuf, 1, same_file);
7051 * skip to #endif, #else, or #elif. adjust line numbers, etc.
7052 * leaves input ptr at the sharp sign found.
7053 * If ANY is nonzero, return at next directive of any sort.
7056 skip_if_group (ip, any, op)
7061 register U_CHAR *bp = ip->bufp, *cp;
7062 register U_CHAR *endb = ip->buf + ip->length;
7063 struct directive *kt;
7064 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
7065 U_CHAR *beg_of_line = bp;
7066 register int ident_length;
7067 U_CHAR *ident, *after_ident;
7068 /* Save info about where the group starts. */
7069 U_CHAR *beg_of_group = bp;
7070 int beg_lineno = ip->lineno;
7072 if (output_conditionals && op != 0) {
7073 char *ptr = "#failed\n";
7074 int len = strlen (ptr);
7076 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7081 check_expand (op, len);
7082 bcopy (ptr, (char *) op->bufp, len);
7085 output_line_command (ip, op, 1, 0);
7090 case '/': /* possible comment */
7091 if (*bp == '\\' && bp[1] == '\n')
7094 || (cplusplus_comments && *bp == '/')) {
7096 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
7101 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
7102 NULL_PTR, NULL_PTR);
7105 /* Char after backslash loses its special meaning. */
7108 ++ip->lineno; /* But do update the line-count. */
7117 if (beg_of_line == 0 || traditional)
7120 while (bp[0] == '\\' && bp[1] == '\n')
7126 /* # keyword: a # must be first nonblank char on the line */
7127 if (beg_of_line == 0)
7131 /* Scan from start of line, skipping whitespace, comments
7132 and backslash-newlines, and see if we reach this #.
7133 If not, this # is not special. */
7135 /* If -traditional, require # to be at beginning of line. */
7138 if (is_hor_space[*bp])
7140 else if (*bp == '\\' && bp[1] == '\n')
7142 else if (*bp == '/' && bp[1] == '*') {
7144 while (!(*bp == '*' && bp[1] == '/'))
7148 /* There is no point in trying to deal with C++ // comments here,
7149 because if there is one, then this # must be part of the
7150 comment and we would never reach here. */
7154 if (bp != ip->bufp) {
7155 bp = ip->bufp + 1; /* Reset bp to after the #. */
7159 bp = ip->bufp + 1; /* Point after the '#' */
7160 if (ip->bufp[0] == '%') {
7161 /* Skip past the ':' again. */
7162 while (*bp == '\\') {
7169 /* Skip whitespace and \-newline. */
7171 if (is_hor_space[*bp])
7173 else if (*bp == '\\' && bp[1] == '\n')
7175 else if (*bp == '/' && bp[1] == '*') {
7177 while (!(*bp == '*' && bp[1] == '/')) {
7183 } else if (cplusplus_comments && *bp == '/' && bp[1] == '/') {
7185 while (bp[-1] == '\\' || *bp != '\n') {
7196 /* Now find end of directive name.
7197 If we encounter a backslash-newline, exchange it with any following
7198 symbol-constituents so that we end up with a contiguous name. */
7204 if (*bp == '\\' && bp[1] == '\n')
7205 name_newline_fix (bp);
7211 ident_length = bp - cp;
7215 /* A line of just `#' becomes blank. */
7217 if (ident_length == 0 && *after_ident == '\n') {
7221 if (ident_length == 0 || !is_idstart[*ident]) {
7223 while (is_idchar[*p]) {
7224 if (*p < '0' || *p > '9')
7228 /* Handle # followed by a line number. */
7229 if (p != ident && !is_idchar[*p]) {
7231 pedwarn ("`#' followed by integer");
7235 /* Avoid error for `###' and similar cases unless -pedantic. */
7237 while (*p == '#' || is_hor_space[*p]) p++;
7239 if (pedantic && !lang_asm)
7240 pedwarn ("invalid preprocessor directive");
7245 if (!lang_asm && pedantic)
7246 pedwarn ("invalid preprocessor directive name");
7250 for (kt = directive_table; kt->length >= 0; kt++) {
7251 IF_STACK_FRAME *temp;
7252 if (ident_length == kt->length
7253 && strncmp (cp, kt->name, kt->length) == 0) {
7254 /* If we are asked to return on next directive, do so now. */
7262 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7263 temp->next = if_stack;
7265 temp->lineno = ip->lineno;
7266 temp->fname = ip->nominal_fname;
7267 temp->type = kt->type;
7271 if (pedantic && if_stack != save_if_stack)
7274 if (if_stack == instack[indepth].if_stack) {
7275 error ("`#%s' not within a conditional", kt->name);
7278 else if (if_stack == save_if_stack)
7279 goto done; /* found what we came for */
7281 if (kt->type != T_ENDIF) {
7282 if (if_stack->type == T_ELSE)
7283 error ("`#else' or `#elif' after `#else'");
7284 if_stack->type = kt->type;
7289 if_stack = if_stack->next;
7296 /* Don't let erroneous code go by. */
7297 if (kt->length < 0 && !lang_asm && pedantic)
7298 pedwarn ("invalid preprocessor directive name");
7303 /* after this returns, rescan will exit because ip->bufp
7304 now points to the end of the buffer.
7305 rescan is responsible for the error message also. */
7308 if (output_conditionals && op != 0) {
7309 char *ptr = "#endfailed\n";
7310 int len = strlen (ptr);
7312 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7317 check_expand (op, beg_of_line - beg_of_group);
7318 bcopy ((char *) beg_of_group, (char *) op->bufp,
7319 beg_of_line - beg_of_group);
7320 op->bufp += beg_of_line - beg_of_group;
7321 op->lineno += ip->lineno - beg_lineno;
7322 check_expand (op, len);
7323 bcopy (ptr, (char *) op->bufp, len);
7330 * handle a #else directive. Do this by just continuing processing
7331 * without changing if_stack ; this is so that the error message
7332 * for missing #endif's etc. will point to the original #if. It
7333 * is possible that something different would be better.
7337 do_else (buf, limit, op, keyword)
7338 U_CHAR *buf, *limit;
7340 struct directive *keyword;
7342 FILE_BUF *ip = &instack[indepth];
7345 SKIP_WHITE_SPACE (buf);
7347 pedwarn ("text following `#else' violates ANSI standard");
7350 if (if_stack == instack[indepth].if_stack) {
7351 error ("`#else' not within a conditional");
7354 /* #ifndef can't have its special treatment for containing the whole file
7355 if it has a #else clause. */
7356 if_stack->control_macro = 0;
7358 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7359 error ("`#else' after `#else'");
7360 fprintf (stderr, " (matches line %d", if_stack->lineno);
7361 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7362 fprintf (stderr, ", file %s", if_stack->fname);
7363 fprintf (stderr, ")\n");
7365 if_stack->type = T_ELSE;
7368 if (if_stack->if_succeeded)
7369 skip_if_group (ip, 0, op);
7371 ++if_stack->if_succeeded; /* continue processing input */
7372 output_line_command (ip, op, 1, same_file);
7378 * unstack after #endif command
7382 do_endif (buf, limit, op, keyword)
7383 U_CHAR *buf, *limit;
7385 struct directive *keyword;
7388 SKIP_WHITE_SPACE (buf);
7390 pedwarn ("text following `#endif' violates ANSI standard");
7393 if (if_stack == instack[indepth].if_stack)
7394 error ("unbalanced `#endif'");
7396 IF_STACK_FRAME *temp = if_stack;
7397 if_stack = if_stack->next;
7398 if (temp->control_macro != 0) {
7399 /* This #endif matched a #ifndef at the start of the file.
7400 See if it is at the end of the file. */
7401 FILE_BUF *ip = &instack[indepth];
7402 U_CHAR *p = ip->bufp;
7403 U_CHAR *ep = ip->buf + ip->length;
7408 if (c == '/' && p != ep && *p == '*') {
7409 /* Skip this comment. */
7411 U_CHAR *save_bufp = ip->bufp;
7413 p = skip_to_end_of_comment (ip, &junk, 1);
7414 ip->bufp = save_bufp;
7419 /* If we get here, this #endif ends a #ifndef
7420 that contains all of the file (aside from whitespace).
7421 Arrange not to include the file again
7422 if the macro that was tested is defined.
7424 Do not do this for the top-level file in a -include or any
7425 file in a -imacros. */
7427 && ! (indepth == 1 && no_record_file)
7428 && ! (no_record_file && no_output))
7429 record_control_macro (ip->fname, temp->control_macro);
7433 output_line_command (&instack[indepth], op, 1, same_file);
7438 /* When an #else or #endif is found while skipping failed conditional,
7439 if -pedantic was specified, this is called to warn about text after
7440 the command name. P points to the first char after the command name. */
7446 /* Advance P over whitespace and comments. */
7448 if (*p == '\\' && p[1] == '\n')
7450 if (is_hor_space[*p])
7452 else if (*p == '/') {
7453 if (p[1] == '\\' && p[2] == '\n')
7454 newline_fix (p + 1);
7457 /* Don't bother warning about unterminated comments
7458 since that will happen later. Just be sure to exit. */
7460 if (p[1] == '\\' && p[2] == '\n')
7461 newline_fix (p + 1);
7462 if (*p == '*' && p[1] == '/') {
7469 else if (cplusplus_comments && p[1] == '/') {
7471 while (*p && (*p != '\n' || p[-1] == '\\'))
7476 if (*p && *p != '\n')
7477 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7480 /* Skip a comment, assuming the input ptr immediately follows the
7481 initial slash-star. Bump *LINE_COUNTER for each newline.
7482 (The canonical line counter is &ip->lineno.)
7483 Don't use this routine (or the next one) if bumping the line
7484 counter is not sufficient to deal with newlines in the string.
7486 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7487 This feature is useful when processing a comment that is going to be
7488 processed or was processed at another point in the preprocessor,
7489 to avoid a duplicate warning. Likewise for unterminated comment errors. */
7492 skip_to_end_of_comment (ip, line_counter, nowarn)
7493 register FILE_BUF *ip;
7494 int *line_counter; /* place to remember newlines, or NULL */
7497 register U_CHAR *limit = ip->buf + ip->length;
7498 register U_CHAR *bp = ip->bufp;
7499 FILE_BUF *op = &outbuf; /* JF */
7500 int output = put_out_comments && !line_counter;
7501 int start_line = line_counter ? *line_counter : 0;
7503 /* JF this line_counter stuff is a crock to make sure the
7504 comment is only put out once, no matter how many times
7505 the comment is skipped. It almost works */
7510 if (cplusplus_comments && bp[-1] == '/') {
7512 while (bp < limit) {
7514 if (*bp == '\n' && bp[-1] != '\\')
7526 while (bp < limit) {
7527 if (bp[-1] != '\\' && *bp == '\n') {
7530 if (*bp == '\n' && line_counter)
7539 while (bp < limit) {
7544 if (warn_comments && !nowarn && bp < limit && *bp == '*')
7545 warning ("`/*' within comment");
7548 /* If this is the end of the file, we have an unterminated comment.
7549 Don't swallow the newline. We are guaranteed that there will be a
7550 trailing newline and various pieces assume it's there. */
7557 if (line_counter != NULL)
7563 if (*bp == '\\' && bp[1] == '\n')
7576 error_with_line (line_for_error (start_line), "unterminated comment");
7582 * Skip over a quoted string. BP points to the opening quote.
7583 * Returns a pointer after the closing quote. Don't go past LIMIT.
7584 * START_LINE is the line number of the starting point (but it need
7585 * not be valid if the starting point is inside a macro expansion).
7587 * The input stack state is not changed.
7589 * If COUNT_NEWLINES is nonzero, it points to an int to increment
7590 * for each newline passed.
7592 * If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7593 * if we pass a backslash-newline.
7595 * If EOFP is nonzero, set *EOFP to 1 if the string is unterminated.
7598 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7599 register U_CHAR *bp;
7600 register U_CHAR *limit;
7602 int *count_newlines;
7603 int *backslash_newlines_p;
7606 register U_CHAR c, match;
7611 error_with_line (line_for_error (start_line),
7612 "unterminated string or character constant");
7613 error_with_line (multiline_string_line,
7614 "possible real start of unterminated constant");
7615 multiline_string_line = 0;
7622 while (*bp == '\\' && bp[1] == '\n') {
7623 if (backslash_newlines_p)
7624 *backslash_newlines_p = 1;
7629 if (*bp == '\n' && count_newlines) {
7630 if (backslash_newlines_p)
7631 *backslash_newlines_p = 1;
7635 } else if (c == '\n') {
7637 /* Unterminated strings and character constants are 'valid'. */
7638 bp--; /* Don't consume the newline. */
7643 if (pedantic || match == '\'') {
7644 error_with_line (line_for_error (start_line),
7645 "unterminated string or character constant");
7651 /* If not traditional, then allow newlines inside strings. */
7654 if (multiline_string_line == 0)
7655 multiline_string_line = start_line;
7656 } else if (c == match)
7662 /* Place into DST a quoted string representing the string SRC.
7663 Return the address of DST's terminating null. */
7665 quote_string (dst, src)
7672 switch ((c = *src++))
7679 sprintf (dst, "\\%03o", c);
7697 /* Skip across a group of balanced parens, starting from IP->bufp.
7698 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7700 This does not handle newlines, because it's used for the arg of #if,
7701 where there aren't any newlines. Also, backslash-newline can't appear. */
7704 skip_paren_group (ip)
7705 register FILE_BUF *ip;
7707 U_CHAR *limit = ip->buf + ip->length;
7708 U_CHAR *p = ip->bufp;
7710 int lines_dummy = 0;
7712 while (p != limit) {
7722 return ip->bufp = p;
7728 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7736 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7738 return ip->bufp = p;
7749 * write out a #line command, for instance, after an #include file.
7750 * If CONDITIONAL is nonzero, we can omit the #line if it would
7751 * appear to be a no-op, and we can output a few newlines instead
7752 * if we want to increase the line number by a small amount.
7753 * FILE_CHANGE says whether we are entering a file, leaving, or neither.
7757 output_line_command (ip, op, conditional, file_change)
7760 enum file_change_code file_change;
7763 char *line_cmd_buf, *line_end;
7765 if (no_line_commands
7766 || ip->fname == NULL
7768 op->lineno = ip->lineno;
7773 if (ip->lineno == op->lineno)
7776 /* If the inherited line number is a little too small,
7777 output some newlines instead of a #line command. */
7778 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7779 check_expand (op, 10);
7780 while (ip->lineno > op->lineno) {
7788 /* Don't output a line number of 0 if we can help it. */
7789 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7790 && *ip->bufp == '\n') {
7795 line_cmd_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7796 #ifdef OUTPUT_LINE_COMMANDS
7797 sprintf (line_cmd_buf, "#line %d ", ip->lineno);
7799 sprintf (line_cmd_buf, "# %d ", ip->lineno);
7801 line_end = quote_string (line_cmd_buf + strlen (line_cmd_buf),
7803 if (file_change != same_file) {
7805 *line_end++ = file_change == enter_file ? '1' : '2';
7807 /* Tell cc1 if following text comes from a system header file. */
7808 if (ip->system_header_p) {
7812 #ifndef NO_IMPLICIT_EXTERN_C
7813 /* Tell cc1plus if following text should be treated as C. */
7814 if (ip->system_header_p == 2 && cplusplus) {
7820 len = line_end - line_cmd_buf;
7821 check_expand (op, len + 1);
7822 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7824 bcopy ((char *) line_cmd_buf, (char *) op->bufp, len);
7826 op->lineno = ip->lineno;
7829 /* This structure represents one parsed argument in a macro call.
7830 `raw' points to the argument text as written (`raw_length' is its length).
7831 `expanded' points to the argument's macro-expansion
7832 (its length is `expand_length').
7833 `stringified_length' is the length the argument would have
7835 `use_count' is the number of times this macro arg is substituted
7836 into the macro. If the actual use count exceeds 10,
7837 the value stored is 10.
7838 `free1' and `free2', if nonzero, point to blocks to be freed
7839 when the macro argument data is no longer needed. */
7842 U_CHAR *raw, *expanded;
7843 int raw_length, expand_length;
7844 int stringified_length;
7845 U_CHAR *free1, *free2;
7851 /* Expand a macro call.
7852 HP points to the symbol that is the macro being called.
7853 Put the result of expansion onto the input stack
7854 so that subsequent input by our caller will use it.
7856 If macro wants arguments, caller has already verified that
7857 an argument list follows; arguments come from the input stack. */
7860 macroexpand (hp, op)
7865 DEFINITION *defn = hp->value.defn;
7866 register U_CHAR *xbuf;
7868 int start_line = instack[indepth].lineno;
7869 int rest_args, rest_zero;
7871 CHECK_DEPTH (return;);
7873 /* it might not actually be a macro. */
7874 if (hp->type != T_MACRO) {
7875 special_symbol (hp, op);
7879 /* This macro is being used inside a #if, which means it must be */
7880 /* recorded as a precondition. */
7881 if (pcp_inside_if && pcp_outfile && defn->predefined)
7882 dump_single_macro (hp, pcp_outfile);
7884 nargs = defn->nargs;
7888 struct argdata *args;
7889 char *parse_error = 0;
7891 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
7893 for (i = 0; i < nargs; i++) {
7894 args[i].raw = (U_CHAR *) "";
7895 args[i].expanded = 0;
7896 args[i].raw_length = args[i].expand_length
7897 = args[i].stringified_length = 0;
7898 args[i].free1 = args[i].free2 = 0;
7899 args[i].use_count = 0;
7902 /* Parse all the macro args that are supplied. I counts them.
7903 The first NARGS args are stored in ARGS.
7904 The rest are discarded.
7905 If rest_args is set then we assume macarg absorbed the rest of the args.
7910 /* Discard the open-parenthesis or comma before the next arg. */
7911 ++instack[indepth].bufp;
7914 if (i < nargs || (nargs == 0 && i == 0)) {
7915 /* if we are working on last arg which absorbs rest of args... */
7916 if (i == nargs - 1 && defn->rest_args)
7918 parse_error = macarg (&args[i], rest_args);
7921 parse_error = macarg (NULL_PTR, 0);
7923 error_with_line (line_for_error (start_line), parse_error);
7927 } while (*instack[indepth].bufp != ')');
7929 /* If we got one arg but it was just whitespace, call that 0 args. */
7931 register U_CHAR *bp = args[0].raw;
7932 register U_CHAR *lim = bp + args[0].raw_length;
7933 /* cpp.texi says for foo ( ) we provide one argument.
7934 However, if foo wants just 0 arguments, treat this as 0. */
7936 while (bp != lim && is_space[*bp]) bp++;
7941 /* Don't output an error message if we have already output one for
7942 a parse error above. */
7944 if (nargs == 0 && i > 0) {
7946 error ("arguments given to macro `%s'", hp->name);
7947 } else if (i < nargs) {
7948 /* traditional C allows foo() if foo wants one argument. */
7949 if (nargs == 1 && i == 0 && traditional)
7951 /* the rest args token is allowed to absorb 0 tokens */
7952 else if (i == nargs - 1 && defn->rest_args)
7954 else if (parse_error)
7957 error ("macro `%s' used without args", hp->name);
7959 error ("macro `%s' used with just one arg", hp->name);
7961 error ("macro `%s' used with only %d args", hp->name, i);
7962 } else if (i > nargs) {
7964 error ("macro `%s' used with too many (%d) args", hp->name, i);
7967 /* Swallow the closeparen. */
7968 ++instack[indepth].bufp;
7970 /* If macro wants zero args, we parsed the arglist for checking only.
7971 Read directly from the macro definition. */
7973 xbuf = defn->expansion;
7974 xbuf_len = defn->length;
7976 register U_CHAR *exp = defn->expansion;
7977 register int offset; /* offset in expansion,
7978 copied a piece at a time */
7979 register int totlen; /* total amount of exp buffer filled so far */
7981 register struct reflist *ap, *last_ap;
7983 /* Macro really takes args. Compute the expansion of this call. */
7985 /* Compute length in characters of the macro's expansion.
7986 Also count number of times each arg is used. */
7987 xbuf_len = defn->length;
7988 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
7990 xbuf_len += args[ap->argno].stringified_length;
7991 else if (ap->raw_before || ap->raw_after || traditional)
7992 /* Add 4 for two newline-space markers to prevent
7993 token concatenation. */
7994 xbuf_len += args[ap->argno].raw_length + 4;
7996 /* We have an ordinary (expanded) occurrence of the arg.
7997 So compute its expansion, if we have not already. */
7998 if (args[ap->argno].expanded == 0) {
8000 obuf = expand_to_temp_buffer (args[ap->argno].raw,
8001 args[ap->argno].raw + args[ap->argno].raw_length,
8004 args[ap->argno].expanded = obuf.buf;
8005 args[ap->argno].expand_length = obuf.length;
8006 args[ap->argno].free2 = obuf.buf;
8009 /* Add 4 for two newline-space markers to prevent
8010 token concatenation. */
8011 xbuf_len += args[ap->argno].expand_length + 4;
8013 if (args[ap->argno].use_count < 10)
8014 args[ap->argno].use_count++;
8017 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
8019 /* Generate in XBUF the complete expansion
8020 with arguments substituted in.
8021 TOTLEN is the total size generated so far.
8022 OFFSET is the index in the definition
8023 of where we are copying from. */
8024 offset = totlen = 0;
8025 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
8026 last_ap = ap, ap = ap->next) {
8027 register struct argdata *arg = &args[ap->argno];
8028 int count_before = totlen;
8030 /* Add chars to XBUF. */
8031 for (i = 0; i < ap->nchars; i++, offset++)
8032 xbuf[totlen++] = exp[offset];
8034 /* If followed by an empty rest arg with concatenation,
8035 delete the last run of nonwhite chars. */
8036 if (rest_zero && totlen > count_before
8037 && ((ap->rest_args && ap->raw_before)
8038 || (last_ap != NULL && last_ap->rest_args
8039 && last_ap->raw_after))) {
8040 /* Delete final whitespace. */
8041 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
8045 /* Delete the nonwhites before them. */
8046 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
8051 if (ap->stringify != 0) {
8052 int arglen = arg->raw_length;
8058 && (c = arg->raw[i], is_space[c]))
8061 && (c = arg->raw[arglen - 1], is_space[c]))
8064 xbuf[totlen++] = '\"'; /* insert beginning quote */
8065 for (; i < arglen; i++) {
8068 /* Special markers Newline Space
8069 generate nothing for a stringified argument. */
8070 if (c == '\n' && arg->raw[i+1] != '\n') {
8075 /* Internal sequences of whitespace are replaced by one space
8076 except within an string or char token. */
8078 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
8080 /* Note that Newline Space does occur within whitespace
8081 sequences; consider it part of the sequence. */
8082 if (c == '\n' && is_space[arg->raw[i+1]])
8084 else if (c != '\n' && is_space[c])
8101 } else if (c == '\"' || c == '\'')
8105 /* Escape these chars */
8106 if (c == '\"' || (in_string && c == '\\'))
8107 xbuf[totlen++] = '\\';
8111 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
8116 xbuf[totlen++] = '\"'; /* insert ending quote */
8117 } else if (ap->raw_before || ap->raw_after || traditional) {
8118 U_CHAR *p1 = arg->raw;
8119 U_CHAR *l1 = p1 + arg->raw_length;
8120 if (ap->raw_before) {
8121 while (p1 != l1 && is_space[*p1]) p1++;
8122 while (p1 != l1 && is_idchar[*p1])
8123 xbuf[totlen++] = *p1++;
8124 /* Delete any no-reexpansion marker that follows
8125 an identifier at the beginning of the argument
8126 if the argument is concatenated with what precedes it. */
8127 if (p1[0] == '\n' && p1[1] == '-')
8129 } else if (!traditional) {
8130 /* Ordinary expanded use of the argument.
8131 Put in newline-space markers to prevent token pasting. */
8132 xbuf[totlen++] = '\n';
8133 xbuf[totlen++] = ' ';
8135 if (ap->raw_after) {
8136 /* Arg is concatenated after: delete trailing whitespace,
8137 whitespace markers, and no-reexpansion markers. */
8139 if (is_space[l1[-1]]) l1--;
8140 else if (l1[-1] == '-') {
8141 U_CHAR *p2 = l1 - 1;
8142 /* If a `-' is preceded by an odd number of newlines then it
8143 and the last newline are a no-reexpansion marker. */
8144 while (p2 != p1 && p2[-1] == '\n') p2--;
8145 if ((l1 - 1 - p2) & 1) {
8154 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8156 if (!traditional && !ap->raw_after) {
8157 /* Ordinary expanded use of the argument.
8158 Put in newline-space markers to prevent token pasting. */
8159 xbuf[totlen++] = '\n';
8160 xbuf[totlen++] = ' ';
8163 /* Ordinary expanded use of the argument.
8164 Put in newline-space markers to prevent token pasting. */
8166 xbuf[totlen++] = '\n';
8167 xbuf[totlen++] = ' ';
8169 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8170 arg->expand_length);
8171 totlen += arg->expand_length;
8173 xbuf[totlen++] = '\n';
8174 xbuf[totlen++] = ' ';
8176 /* If a macro argument with newlines is used multiple times,
8177 then only expand the newlines once. This avoids creating output
8178 lines which don't correspond to any input line, which confuses
8180 if (arg->use_count > 1 && arg->newlines > 0) {
8181 /* Don't bother doing change_newlines for subsequent
8185 = change_newlines (arg->expanded, arg->expand_length);
8189 if (totlen > xbuf_len)
8193 /* if there is anything left of the definition
8194 after handling the arg list, copy that in too. */
8196 for (i = offset; i < defn->length; i++) {
8197 /* if we've reached the end of the macro */
8200 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8201 && last_ap->raw_after))
8202 xbuf[totlen++] = exp[i];
8208 for (i = 0; i < nargs; i++) {
8209 if (args[i].free1 != 0)
8210 free (args[i].free1);
8211 if (args[i].free2 != 0)
8212 free (args[i].free2);
8216 xbuf = defn->expansion;
8217 xbuf_len = defn->length;
8220 /* Now put the expansion on the input stack
8221 so our caller will commence reading from it. */
8223 register FILE_BUF *ip2;
8225 ip2 = &instack[++indepth];
8228 ip2->nominal_fname = 0;
8229 /* This may not be exactly correct, but will give much better error
8230 messages for nested macro calls than using a line number of zero. */
8231 ip2->lineno = start_line;
8233 ip2->length = xbuf_len;
8235 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8237 ip2->if_stack = if_stack;
8238 ip2->system_header_p = 0;
8240 /* Recursive macro use sometimes works traditionally.
8241 #define foo(x,y) bar (x (y,0), y)
8245 hp->type = T_DISABLED;
8250 * Parse a macro argument and store the info on it into *ARGPTR.
8251 * REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8252 * Return nonzero to indicate a syntax error.
8256 macarg (argptr, rest_args)
8257 register struct argdata *argptr;
8260 FILE_BUF *ip = &instack[indepth];
8265 /* Try to parse as much of the argument as exists at this
8266 input stack level. */
8267 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8268 &paren, &newlines, &comments, rest_args);
8270 /* If we find the end of the argument at this level,
8271 set up *ARGPTR to point at it in the input stack. */
8272 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8273 && bp != ip->buf + ip->length) {
8275 argptr->raw = ip->bufp;
8276 argptr->raw_length = bp - ip->bufp;
8277 argptr->newlines = newlines;
8281 /* This input stack level ends before the macro argument does.
8282 We must pop levels and keep parsing.
8283 Therefore, we must allocate a temporary buffer and copy
8284 the macro argument into it. */
8285 int bufsize = bp - ip->bufp;
8286 int extra = newlines;
8287 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8288 int final_start = 0;
8290 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8292 ip->lineno += newlines;
8294 while (bp == ip->buf + ip->length) {
8295 if (instack[indepth].macro == 0) {
8297 return "unterminated macro call";
8299 ip->macro->type = T_MACRO;
8301 free (ip->free_ptr);
8302 ip = &instack[--indepth];
8305 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8306 &newlines, &comments, rest_args);
8307 final_start = bufsize;
8308 bufsize += bp - ip->bufp;
8310 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8311 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8314 ip->lineno += newlines;
8317 /* Now, if arg is actually wanted, record its raw form,
8318 discarding comments and duplicating newlines in whatever
8319 part of it did not come from a macro expansion.
8320 EXTRA space has been preallocated for duplicating the newlines.
8321 FINAL_START is the index of the start of that part. */
8323 argptr->raw = buffer;
8324 argptr->raw_length = bufsize;
8325 argptr->free1 = buffer;
8326 argptr->newlines = newlines;
8327 argptr->comments = comments;
8328 if ((newlines || comments) && ip->fname != 0)
8331 discard_comments (argptr->raw + final_start,
8332 argptr->raw_length - final_start,
8334 argptr->raw[argptr->raw_length] = 0;
8335 if (argptr->raw_length > bufsize + extra)
8340 /* If we are not discarding this argument,
8341 macroexpand it and compute its length as stringified.
8342 All this info goes into *ARGPTR. */
8345 register U_CHAR *buf, *lim;
8346 register int totlen;
8349 lim = buf + argptr->raw_length;
8351 while (buf != lim && is_space[*buf])
8353 while (buf != lim && is_space[lim[-1]])
8355 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8356 while (buf != lim) {
8357 register U_CHAR c = *buf++;
8359 /* Internal sequences of whitespace are replaced by one space
8360 in most cases, but not always. So count all the whitespace
8361 in case we need to keep it all. */
8364 SKIP_ALL_WHITE_SPACE (buf);
8367 if (c == '\"' || c == '\\') /* escape these chars */
8369 else if (!isprint (c))
8372 argptr->stringified_length = totlen;
8377 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8378 counting parens in *DEPTHPTR,
8379 and return if reach LIMIT
8380 or before a `)' that would make *DEPTHPTR negative
8381 or before a comma when *DEPTHPTR is zero.
8382 Single and double quotes are matched and termination
8383 is inhibited within them. Comments also inhibit it.
8384 Value returned is pointer to stopping place.
8386 Increment *NEWLINES each time a newline is passed.
8387 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8388 Set *COMMENTS to 1 if a comment is seen. */
8391 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8393 register U_CHAR *limit;
8394 int *depthptr, *newlines, *comments;
8397 register U_CHAR *bp = start;
8399 while (bp < limit) {
8405 if (--(*depthptr) < 0)
8409 /* Traditionally, backslash makes following char not special. */
8410 if (bp + 1 < limit && traditional)
8413 /* But count source lines anyway. */
8422 if (bp[1] == '\\' && bp[2] == '\n')
8423 newline_fix (bp + 1);
8424 if (cplusplus_comments && bp[1] == '/') {
8427 while (bp < limit && (*bp != '\n' || bp[-1] == '\\')) {
8428 if (*bp == '\n') ++*newlines;
8431 /* Now count the newline that we are about to skip. */
8435 if (bp[1] != '*' || bp + 1 >= limit)
8439 while (bp + 1 < limit) {
8441 && bp[1] == '\\' && bp[2] == '\n')
8442 newline_fix (bp + 1);
8443 if (bp[0] == '*' && bp[1] == '/')
8445 if (*bp == '\n') ++*newlines;
8453 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8458 while (*bp == '\\' && bp[1] == '\n') {
8461 } else if (*bp == '\n') {
8470 /* if we've returned to lowest level and we aren't absorbing all args */
8471 if ((*depthptr) == 0 && rest_args == 0)
8481 /* Discard comments and duplicate newlines
8482 in the string of length LENGTH at START,
8483 except inside of string constants.
8484 The string is copied into itself with its beginning staying fixed.
8486 NEWLINES is the number of newlines that must be duplicated.
8487 We assume that that much extra space is available past the end
8491 discard_comments (start, length, newlines)
8496 register U_CHAR *ibp;
8497 register U_CHAR *obp;
8498 register U_CHAR *limit;
8501 /* If we have newlines to duplicate, copy everything
8502 that many characters up. Then, in the second part,
8503 we will have room to insert the newlines
8505 NEWLINES may actually be too large, because it counts
8506 newlines in string constants, and we don't duplicate those.
8507 But that does no harm. */
8509 ibp = start + length;
8510 obp = ibp + newlines;
8512 while (limit != ibp)
8516 ibp = start + newlines;
8517 limit = start + length + newlines;
8520 while (ibp < limit) {
8521 *obp++ = c = *ibp++;
8524 /* Duplicate the newline. */
8536 if (*ibp == '\\' && ibp[1] == '\n')
8538 /* Delete any comment. */
8539 if (cplusplus_comments && ibp[0] == '/') {
8540 /* Comments are equivalent to spaces. */
8543 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8547 if (ibp[0] != '*' || ibp + 1 >= limit)
8549 /* Comments are equivalent to spaces.
8550 For -traditional, a comment is equivalent to nothing. */
8556 while (ibp + 1 < limit) {
8558 && ibp[1] == '\\' && ibp[2] == '\n')
8559 newline_fix (ibp + 1);
8560 if (ibp[0] == '*' && ibp[1] == '/')
8569 /* Notice and skip strings, so that we don't
8570 think that comments start inside them,
8571 and so we don't duplicate newlines in them. */
8574 while (ibp < limit) {
8575 *obp++ = c = *ibp++;
8578 if (c == '\n' && quotec == '\'')
8580 if (c == '\\' && ibp < limit) {
8581 while (*ibp == '\\' && ibp[1] == '\n')
8594 /* Turn newlines to spaces in the string of length LENGTH at START,
8595 except inside of string constants.
8596 The string is copied into itself with its beginning staying fixed. */
8599 change_newlines (start, length)
8603 register U_CHAR *ibp;
8604 register U_CHAR *obp;
8605 register U_CHAR *limit;
8609 limit = start + length;
8612 while (ibp < limit) {
8613 *obp++ = c = *ibp++;
8616 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8617 string. Skip past the newline and its duplicate.
8618 Put a space in the output. */
8629 /* Notice and skip strings, so that we don't delete newlines in them. */
8632 while (ibp < limit) {
8633 *obp++ = c = *ibp++;
8636 if (c == '\n' && quotec == '\'')
8648 * my_strerror - return the descriptive text associated with an `errno' code.
8652 my_strerror (errnum)
8658 #ifndef HAVE_STRERROR
8659 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8661 result = strerror (errnum);
8664 /* VAXCRTL's strerror() takes an optional second argument, which only
8665 matters when the first argument is EVMSERR. However, it's simplest
8666 just to pass it unconditionally. `vaxc$errno' is declared in
8667 <errno.h>, and maintained by the library in parallel with `errno'.
8668 We assume that caller's `errnum' either matches the last setting of
8669 `errno' by the library or else does not have the value `EVMSERR'. */
8671 result = strerror (errnum, vaxc$errno);
8675 result = "undocumented I/O error";
8681 * error - print error message and increment count of errors.
8685 error (msg, arg1, arg2, arg3)
8687 char *arg1, *arg2, *arg3;
8690 FILE_BUF *ip = NULL;
8692 print_containing_files ();
8694 for (i = indepth; i >= 0; i--)
8695 if (instack[i].fname != NULL) {
8701 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8702 fprintf (stderr, msg, arg1, arg2, arg3);
8703 fprintf (stderr, "\n");
8707 /* Error including a message from `errno'. */
8710 error_from_errno (name)
8714 FILE_BUF *ip = NULL;
8716 print_containing_files ();
8718 for (i = indepth; i >= 0; i--)
8719 if (instack[i].fname != NULL) {
8725 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8727 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8732 /* Print error message but don't count it. */
8735 warning (msg, arg1, arg2, arg3)
8737 char *arg1, *arg2, *arg3;
8740 FILE_BUF *ip = NULL;
8742 if (inhibit_warnings)
8745 if (warnings_are_errors)
8748 print_containing_files ();
8750 for (i = indepth; i >= 0; i--)
8751 if (instack[i].fname != NULL) {
8757 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8758 fprintf (stderr, "warning: ");
8759 fprintf (stderr, msg, arg1, arg2, arg3);
8760 fprintf (stderr, "\n");
8764 error_with_line (line, msg, arg1, arg2, arg3)
8767 char *arg1, *arg2, *arg3;
8770 FILE_BUF *ip = NULL;
8772 print_containing_files ();
8774 for (i = indepth; i >= 0; i--)
8775 if (instack[i].fname != NULL) {
8781 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8782 fprintf (stderr, msg, arg1, arg2, arg3);
8783 fprintf (stderr, "\n");
8788 warning_with_line (line, msg, arg1, arg2, arg3)
8791 char *arg1, *arg2, *arg3;
8794 FILE_BUF *ip = NULL;
8796 if (inhibit_warnings)
8799 if (warnings_are_errors)
8802 print_containing_files ();
8804 for (i = indepth; i >= 0; i--)
8805 if (instack[i].fname != NULL) {
8811 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8812 fprintf (stderr, "warning: ");
8813 fprintf (stderr, msg, arg1, arg2, arg3);
8814 fprintf (stderr, "\n");
8817 /* print an error message and maybe count it. */
8820 pedwarn (msg, arg1, arg2, arg3)
8822 char *arg1, *arg2, *arg3;
8824 if (pedantic_errors)
8825 error (msg, arg1, arg2, arg3);
8827 warning (msg, arg1, arg2, arg3);
8831 pedwarn_with_line (line, msg, arg1, arg2, arg3)
8834 char *arg1, *arg2, *arg3;
8836 if (pedantic_errors)
8837 error_with_line (line, msg, arg1, arg2, arg3);
8839 warning_with_line (line, msg, arg1, arg2, arg3);
8842 /* Report a warning (or an error if pedantic_errors)
8843 giving specified file name and line number, not current. */
8846 pedwarn_with_file_and_line (file, line, msg, arg1, arg2, arg3)
8850 char *arg1, *arg2, *arg3;
8852 if (!pedantic_errors && inhibit_warnings)
8855 fprintf (stderr, "%s:%d: ", file, line);
8856 if (pedantic_errors)
8858 if (!pedantic_errors)
8859 fprintf (stderr, "warning: ");
8860 fprintf (stderr, msg, arg1, arg2, arg3);
8861 fprintf (stderr, "\n");
8864 /* Print the file names and line numbers of the #include
8865 commands which led to the current file. */
8868 print_containing_files ()
8870 FILE_BUF *ip = NULL;
8874 /* If stack of files hasn't changed since we last printed
8875 this info, don't repeat it. */
8876 if (last_error_tick == input_file_stack_tick)
8879 for (i = indepth; i >= 0; i--)
8880 if (instack[i].fname != NULL) {
8885 /* Give up if we don't find a source file. */
8889 /* Find the other, outer source files. */
8890 for (i--; i >= 0; i--)
8891 if (instack[i].fname != NULL) {
8895 fprintf (stderr, "In file included");
8897 fprintf (stderr, ",\n ");
8900 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
8903 fprintf (stderr, ":\n");
8905 /* Record we have printed the status as of this time. */
8906 last_error_tick = input_file_stack_tick;
8909 /* Return the line at which an error occurred.
8910 The error is not necessarily associated with the current spot
8911 in the input stack, so LINE says where. LINE will have been
8912 copied from ip->lineno for the current input level.
8913 If the current level is for a file, we return LINE.
8914 But if the current level is not for a file, LINE is meaningless.
8915 In that case, we return the lineno of the innermost file. */
8918 line_for_error (line)
8924 for (i = indepth; i >= 0; ) {
8925 if (instack[i].fname != 0)
8930 line1 = instack[i].lineno;
8938 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
8940 * As things stand, nothing is ever placed in the output buffer to be
8941 * removed again except when it's KNOWN to be part of an identifier,
8942 * so flushing and moving down everything left, instead of expanding,
8946 /* You might think void was cleaner for the return type,
8947 but that would get type mismatch in check_expand in strict ANSI. */
8949 grow_outbuf (obuf, needed)
8950 register FILE_BUF *obuf;
8951 register int needed;
8956 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
8959 /* Make it at least twice as big as it is now. */
8961 /* Make it have at least 150% of the free space we will need. */
8962 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
8963 if (minsize > obuf->length)
8964 obuf->length = minsize;
8966 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
8969 obuf->bufp = p + (obuf->bufp - obuf->buf);
8975 /* Symbol table for macro names and special symbols */
8978 * install a name in the main hash table, even if it is already there.
8979 * name stops with first non alphanumeric, except leading '#'.
8980 * caller must check against redefinition if that is desired.
8981 * delete_macro () removes things installed by install () in fifo order.
8982 * this is important because of the `defined' special symbol used
8983 * in #if, and also if pushdef/popdef directives are ever implemented.
8985 * If LEN is >= 0, it is the length of the name.
8986 * Otherwise, compute the length by scanning the entire name.
8988 * If HASH is >= 0, it is the precomputed hash code.
8989 * Otherwise, compute the hash code.
8992 install (name, len, type, value, hash)
8995 enum node_type type;
8999 register HASHNODE *hp;
9000 register int i, bucket;
9001 register U_CHAR *p, *q;
9005 while (is_idchar[*p])
9011 hash = hashf (name, len, HASHSIZE);
9013 i = sizeof (HASHNODE) + len + 1;
9014 hp = (HASHNODE *) xmalloc (i);
9016 hp->bucket_hdr = &hashtab[bucket];
9017 hp->next = hashtab[bucket];
9018 hashtab[bucket] = hp;
9020 if (hp->next != NULL)
9021 hp->next->prev = hp;
9024 hp->value.cpval = value;
9025 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
9028 for (i = 0; i < len; i++)
9035 * find the most recent hash node for name name (ending with first
9036 * non-identifier char) installed by install
9038 * If LEN is >= 0, it is the length of the name.
9039 * Otherwise, compute the length by scanning the entire name.
9041 * If HASH is >= 0, it is the precomputed hash code.
9042 * Otherwise, compute the hash code.
9045 lookup (name, len, hash)
9050 register U_CHAR *bp;
9051 register HASHNODE *bucket;
9054 for (bp = name; is_idchar[*bp]; bp++) ;
9059 hash = hashf (name, len, HASHSIZE);
9061 bucket = hashtab[hash];
9063 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
9065 bucket = bucket->next;
9071 * Delete a hash node. Some weirdness to free junk from macros.
9072 * More such weirdness will have to be added if you define more hash
9073 * types that need it.
9076 /* Note that the DEFINITION of a macro is removed from the hash table
9077 but its storage is not freed. This would be a storage leak
9078 except that it is not reasonable to keep undefining and redefining
9079 large numbers of macros many times.
9080 In any case, this is necessary, because a macro can be #undef'd
9081 in the middle of reading the arguments to a call to it.
9082 If #undef freed the DEFINITION, that would crash. */
9089 if (hp->prev != NULL)
9090 hp->prev->next = hp->next;
9091 if (hp->next != NULL)
9092 hp->next->prev = hp->prev;
9094 /* make sure that the bucket chain header that
9095 the deleted guy was on points to the right thing afterwards. */
9096 if (hp == *hp->bucket_hdr)
9097 *hp->bucket_hdr = hp->next;
9100 if (hp->type == T_MACRO) {
9101 DEFINITION *d = hp->value.defn;
9102 struct reflist *ap, *nextap;
9104 for (ap = d->pattern; ap != NULL; ap = nextap) {
9115 * return hash function on name. must be compatible with the one
9116 * computed a step at a time, elsewhere
9119 hashf (name, len, hashsize)
9120 register U_CHAR *name;
9127 r = HASHSTEP (r, *name++);
9129 return MAKE_POS (r) % hashsize;
9133 /* Dump the definition of a single macro HP to OF. */
9135 dump_single_macro (hp, of)
9136 register HASHNODE *hp;
9139 register DEFINITION *defn = hp->value.defn;
9145 /* Print the definition of the macro HP. */
9147 fprintf (of, "#define %s", hp->name);
9149 if (defn->nargs >= 0) {
9153 for (i = 0; i < defn->nargs; i++) {
9154 dump_arg_n (defn, i, of);
9155 if (i + 1 < defn->nargs)
9165 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9166 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9167 offset += ap->nchars;
9169 if (ap->nchars != 0)
9171 if (ap->stringify) {
9172 switch (ap->stringify) {
9173 case SHARP_TOKEN: fprintf (of, "#"); break;
9174 case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
9175 case PERCENT_COLON_TOKEN: fprintf (of, "%:"); break;
9176 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%: "); break;
9179 if (ap->raw_before) {
9181 switch (ap->raw_before) {
9182 case WHITE_SHARP_TOKEN:
9183 case WHITE_PERCENT_COLON_TOKEN:
9188 switch (ap->raw_before) {
9189 case SHARP_TOKEN: fprintf (of, "##"); break;
9190 case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
9191 case PERCENT_COLON_TOKEN: fprintf (of, "%:%:"); break;
9192 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%:%: "); break;
9198 dump_arg_n (defn, ap->argno, of);
9199 if (!traditional && ap->raw_after) {
9200 switch (ap->raw_after) {
9201 case SHARP_TOKEN: fprintf (of, "##"); break;
9202 case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
9203 case PERCENT_COLON_TOKEN: fprintf (of, "%:%:"); break;
9204 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %:%:"); break;
9209 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9213 /* Dump all macro definitions as #defines to stdout. */
9220 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9221 register HASHNODE *hp;
9223 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9224 if (hp->type == T_MACRO)
9225 dump_single_macro (hp, stdout);
9230 /* Output to OF a substring of a macro definition.
9231 BASE is the beginning of the definition.
9232 Output characters START thru LENGTH.
9233 Unless traditional, discard newlines outside of strings, thus
9234 converting funny-space markers to ordinary spaces. */
9237 dump_defn_1 (base, start, length, of)
9243 U_CHAR *p = base + start;
9244 U_CHAR *limit = base + start + length;
9247 fwrite (p, sizeof (*p), length, of);
9250 if (*p == '\"' || *p =='\'') {
9251 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9252 NULL_PTR, NULL_PTR);
9253 fwrite (p, sizeof (*p), p1 - p, of);
9264 /* Print the name of argument number ARGNUM of macro definition DEFN
9266 Recall that DEFN->args.argnames contains all the arg names
9267 concatenated in reverse order with comma-space in between. */
9270 dump_arg_n (defn, argnum, of)
9275 register U_CHAR *p = defn->args.argnames;
9276 while (argnum + 1 < defn->nargs) {
9277 p = (U_CHAR *) index (p, ' ') + 1;
9281 while (*p && *p != ',') {
9287 /* Initialize syntactic classifications of characters. */
9290 initialize_char_syntax ()
9295 * Set up is_idchar and is_idstart tables. These should be
9296 * faster than saying (is_alpha (c) || c == '_'), etc.
9297 * Set up these things before calling any routines tthat
9300 for (i = 'a'; i <= 'z'; i++) {
9301 is_idchar[i - 'a' + 'A'] = 1;
9303 is_idstart[i - 'a' + 'A'] = 1;
9306 for (i = '0'; i <= '9'; i++)
9309 is_idstart['_'] = 1;
9310 is_idchar['$'] = dollars_in_ident;
9311 is_idstart['$'] = dollars_in_ident;
9313 /* horizontal space table */
9314 is_hor_space[' '] = 1;
9315 is_hor_space['\t'] = 1;
9316 is_hor_space['\v'] = 1;
9317 is_hor_space['\f'] = 1;
9318 is_hor_space['\r'] = 1;
9327 char_name['\v'] = "vertical tab";
9328 char_name['\f'] = "formfeed";
9329 char_name['\r'] = "carriage return";
9332 /* Initialize the built-in macros. */
9335 initialize_builtins (inp, outp)
9339 install ("__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
9340 install ("__DATE__", -1, T_DATE, NULL_PTR, -1);
9341 install ("__FILE__", -1, T_FILE, NULL_PTR, -1);
9342 install ("__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
9343 install ("__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
9344 install ("__VERSION__", -1, T_VERSION, NULL_PTR, -1);
9345 #ifndef NO_BUILTIN_SIZE_TYPE
9346 install ("__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
9348 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9349 install ("__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
9351 install ("__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
9352 install ("__USER_LABEL_PREFIX__",-1,T_USER_LABEL_PREFIX_TYPE, NULL_PTR, -1);
9353 install ("__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, NULL_PTR, -1);
9354 install ("__TIME__", -1, T_TIME, NULL_PTR, -1);
9356 install ("__STDC__", -1, T_CONST, "1", -1);
9357 install ("__STDC_VERSION__", -1, T_CONST, "199409L", -1);
9360 install ("__OBJC__", -1, T_CONST, "1", -1);
9361 /* This is supplied using a -D by the compiler driver
9362 so that it is present only when truly compiling with GNU C. */
9363 /* install ("__GNUC__", -1, T_CONST, "2", -1); */
9367 char directive[2048];
9368 register struct directive *dp = &directive_table[0];
9369 struct tm *timebuf = timestamp ();
9371 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9372 instack[0].nominal_fname);
9373 output_line_command (inp, outp, 0, same_file);
9374 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9376 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9377 output_line_command (inp, outp, 0, same_file);
9378 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9380 #ifndef NO_BUILTIN_SIZE_TYPE
9381 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9382 output_line_command (inp, outp, 0, same_file);
9383 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9386 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9387 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9388 output_line_command (inp, outp, 0, same_file);
9389 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9392 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9393 output_line_command (inp, outp, 0, same_file);
9394 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9396 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9397 monthnames[timebuf->tm_mon],
9398 timebuf->tm_mday, timebuf->tm_year + 1900);
9399 output_line_command (inp, outp, 0, same_file);
9400 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9402 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9403 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9404 output_line_command (inp, outp, 0, same_file);
9405 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9409 sprintf (directive, " __STDC__ 1");
9410 output_line_command (inp, outp, 0, same_file);
9411 pass_thru_directive (directive, &directive[strlen (directive)],
9416 sprintf (directive, " __OBJC__ 1");
9417 output_line_command (inp, outp, 0, same_file);
9418 pass_thru_directive (directive, &directive[strlen (directive)],
9425 * process a given definition string, for initialization
9426 * If STR is just an identifier, define it with value 1.
9427 * If STR has anything after the identifier, then it should
9428 * be identifier=definition.
9432 make_definition (str, op)
9437 struct directive *kt;
9442 if (!is_idstart[*p]) {
9443 error ("malformed option `-D %s'", str);
9446 while (is_idchar[*++p])
9449 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9452 p = str; /* Error */
9455 buf = (U_CHAR *) alloca (p - buf + 4);
9456 strcpy ((char *)buf, str);
9457 strcat ((char *)buf, " 1");
9458 } else if (*p != '=') {
9459 error ("malformed option `-D %s'", str);
9463 /* Copy the entire option so we can modify it. */
9464 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9465 strncpy (buf, str, p - str);
9466 /* Change the = to a space. */
9468 /* Scan for any backslash-newline and remove it. */
9472 if (*p == '\"' || *p == '\'') {
9473 int unterminated = 0;
9474 U_CHAR *p1 = skip_quoted_string (p, p + strlen (p), 0,
9475 NULL_PTR, NULL_PTR, &unterminated);
9479 if (*p == '\\' && p[1] == '\n')
9483 } else if (*p == '\\' && p[1] == '\n')
9485 /* Change newline chars into newline-markers. */
9486 else if (*p == '\n')
9498 ip = &instack[++indepth];
9499 ip->nominal_fname = ip->fname = "*Initialization*";
9501 ip->buf = ip->bufp = buf;
9502 ip->length = strlen (buf);
9506 ip->if_stack = if_stack;
9507 ip->system_header_p = 0;
9509 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9512 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9513 do_define (buf, buf + strlen (buf), NULL_PTR, kt);
9517 /* JF, this does the work for the -U option */
9520 make_undef (str, op)
9525 struct directive *kt;
9527 ip = &instack[++indepth];
9528 ip->nominal_fname = ip->fname = "*undef*";
9530 ip->buf = ip->bufp = str;
9531 ip->length = strlen (str);
9535 ip->if_stack = if_stack;
9536 ip->system_header_p = 0;
9538 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9541 do_undef (str, str + strlen (str), op, kt);
9545 /* Process the string STR as if it appeared as the body of a #assert.
9546 OPTION is the option name for which STR was the argument. */
9549 make_assertion (option, str)
9554 struct directive *kt;
9555 U_CHAR *buf, *p, *q;
9557 /* Copy the entire option so we can modify it. */
9558 buf = (U_CHAR *) alloca (strlen (str) + 1);
9559 strcpy ((char *) buf, str);
9560 /* Scan for any backslash-newline and remove it. */
9563 if (*p == '\\' && p[1] == '\n')
9571 if (!is_idstart[*p]) {
9572 error ("malformed option `%s %s'", option, str);
9575 while (is_idchar[*++p])
9577 SKIP_WHITE_SPACE (p);
9578 if (! (*p == 0 || *p == '(')) {
9579 error ("malformed option `%s %s'", option, str);
9583 ip = &instack[++indepth];
9584 ip->nominal_fname = ip->fname = "*Initialization*";
9586 ip->buf = ip->bufp = buf;
9587 ip->length = strlen (buf);
9591 ip->if_stack = if_stack;
9592 ip->system_header_p = 0;
9594 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9597 /* pass NULL as output ptr to do_define since we KNOW it never
9598 does any output.... */
9599 do_assert (buf, buf + strlen (buf) , NULL_PTR, kt);
9603 /* Append a chain of `struct file_name_list's
9604 to the end of the main include chain.
9605 FIRST is the beginning of the chain to append, and LAST is the end. */
9608 append_include_chain (first, last)
9609 struct file_name_list *first, *last;
9611 struct file_name_list *dir;
9613 if (!first || !last)
9619 last_include->next = first;
9621 if (first_bracket_include == 0)
9622 first_bracket_include = first;
9624 for (dir = first; ; dir = dir->next) {
9625 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9626 if (len > max_include_len)
9627 max_include_len = len;
9633 last_include = last;
9636 /* Add output to `deps_buffer' for the -M switch.
9637 STRING points to the text to be output.
9638 SPACER is ':' for targets, ' ' for dependencies, zero for text
9639 to be inserted literally. */
9642 deps_output (string, spacer)
9646 int size = strlen (string);
9651 #ifndef MAX_OUTPUT_COLUMNS
9652 #define MAX_OUTPUT_COLUMNS 72
9656 && (deps_column + size) > MAX_OUTPUT_COLUMNS)
9658 deps_output (" \\\n ", 0);
9662 if (deps_size + size + 8 > deps_allocated_size) {
9663 deps_allocated_size = (deps_size + size + 50) * 2;
9664 deps_buffer = (char *) xrealloc (deps_buffer, deps_allocated_size);
9666 if (spacer == ' ' && deps_column > 0)
9667 deps_buffer[deps_size++] = ' ';
9668 bcopy (string, &deps_buffer[deps_size], size);
9670 deps_column += size;
9672 deps_buffer[deps_size++] = ':';
9673 deps_buffer[deps_size] = 0;
9676 #if defined(USG) || defined(VMS)
9682 register unsigned length;
9684 while (length-- > 0)
9689 bcopy (b1, b2, length)
9692 register unsigned length;
9694 while (length-- > 0)
9699 bcmp (b1, b2, length) /* This could be a macro! */
9702 register unsigned length;
9704 while (length-- > 0)
9710 #endif /* not BSTRING */
9711 #endif /* USG or VMS */
9718 fprintf (stderr, "%s: ", progname);
9719 fprintf (stderr, str, arg);
9720 fprintf (stderr, "\n");
9721 exit (FAILURE_EXIT_CODE);
9724 /* More 'friendly' abort that prints the line and file.
9725 config.h can #define abort fancy_abort if you like that sort of thing. */
9730 fatal ("Internal gcc abort.");
9734 perror_with_name (name)
9737 fprintf (stderr, "%s: ", progname);
9738 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9743 pfatal_with_name (name)
9746 perror_with_name (name);
9750 exit (FAILURE_EXIT_CODE);
9754 /* Handler for SIGPIPE. */
9758 /* If this is missing, some compilers complain. */
9761 fatal ("output pipe has been closed");
9767 fatal ("Memory exhausted.");
9775 register char *ptr = (char *) malloc (size);
9776 if (ptr != 0) return (ptr);
9783 xrealloc (old, size)
9787 register char *ptr = (char *) realloc (old, size);
9788 if (ptr != 0) return (ptr);
9795 xcalloc (number, size)
9796 unsigned number, size;
9798 register unsigned total = number * size;
9799 register char *ptr = (char *) malloc (total);
9804 /* It's not too long, so loop, zeroing by longs.
9805 It must be safe because malloc values are always well aligned. */
9806 register long *zp = (long *) ptr;
9807 register long *zl = (long *) (ptr + total - 4);
9808 register int i = total - 4;
9827 unsigned size = strlen (input);
9828 char *output = xmalloc (size + 1);
9829 strcpy (output, input);
9833 /* Get the file-mode and data size of the file open on FD
9834 and store them in *MODE_POINTER and *SIZE_POINTER. */
9837 file_size_and_mode (fd, mode_pointer, size_pointer)
9840 long int *size_pointer;
9844 if (fstat (fd, &sbuf) < 0) return (-1);
9845 if (mode_pointer) *mode_pointer = sbuf.st_mode;
9846 if (size_pointer) *size_pointer = sbuf.st_size;
9851 output_dots (fd, depth)
9864 /* Under VMS we need to fix up the "include" specification
9865 filename so that everything following the 1st slash is
9866 changed into its correct VMS file specification. */
9869 hack_vms_include_specification (fname)
9872 register char *cp, *cp1, *cp2;
9873 int f, check_filename_before_returning, no_prefix_seen;
9876 check_filename_before_returning = 0;
9879 /* Ignore leading "./"s */
9880 while (fname[0] == '.' && fname[1] == '/') {
9881 strcpy (fname, fname+2);
9882 no_prefix_seen = 1; /* mark this for later */
9884 /* Look for the boundary between the VMS and UNIX filespecs */
9885 cp = rindex (fname, ']'); /* Look for end of dirspec. */
9886 if (cp == 0) cp = rindex (fname, '>'); /* ... Ditto */
9887 if (cp == 0) cp = rindex (fname, ':'); /* Look for end of devspec. */
9891 cp = index (fname, '/'); /* Look for the "/" */
9895 * Check if we have a vax-c style '#include filename'
9896 * and add the missing .h
9899 if (index(fname,'.') == 0)
9900 strcat(fname, ".h");
9902 if (index(cp,'.') == 0)
9906 cp2 = Local; /* initialize */
9908 /* We are trying to do a number of things here. First of all, we are
9909 trying to hammer the filenames into a standard format, such that later
9910 processing can handle them.
9912 If the file name contains something like [dir.], then it recognizes this
9913 as a root, and strips the ".]". Later processing will add whatever is
9914 needed to get things working properly.
9916 If no device is specified, then the first directory name is taken to be
9917 a device name (or a rooted logical). */
9919 /* See if we found that 1st slash */
9920 if (cp == 0) return; /* Nothing to do!!! */
9921 if (*cp != '/') return; /* Nothing to do!!! */
9922 /* Point to the UNIX filename part (which needs to be fixed!) */
9924 /* If the directory spec is not rooted, we can just copy
9925 the UNIX filename part and we are done */
9926 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
9927 if (cp[-2] != '.') {
9929 * The VMS part ends in a `]', and the preceding character is not a `.'.
9930 * We strip the `]', and then splice the two parts of the name in the
9931 * usual way. Given the default locations for include files in cccp.c,
9932 * we will only use this code if the user specifies alternate locations
9933 * with the /include (-I) switch on the command line. */
9934 cp -= 1; /* Strip "]" */
9935 cp1--; /* backspace */
9938 * The VMS part has a ".]" at the end, and this will not do. Later
9939 * processing will add a second directory spec, and this would be a syntax
9940 * error. Thus we strip the ".]", and thus merge the directory specs.
9941 * We also backspace cp1, so that it points to a '/'. This inhibits the
9942 * generation of the 000000 root directory spec (which does not belong here
9945 cp -= 2; /* Strip ".]" */
9946 cp1--; }; /* backspace */
9949 /* We drop in here if there is no VMS style directory specification yet.
9950 * If there is no device specification either, we make the first dir a
9951 * device and try that. If we do not do this, then we will be essentially
9952 * searching the users default directory (as if they did a #include "asdf.h").
9954 * Then all we need to do is to push a '[' into the output string. Later
9955 * processing will fill this in, and close the bracket.
9957 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
9958 *cp2++ = '['; /* Open the directory specification */
9961 /* at this point we assume that we have the device spec, and (at least
9962 the opening "[" for a directory specification. We may have directories
9963 specified already */
9965 /* If there are no other slashes then the filename will be
9966 in the "root" directory. Otherwise, we need to add
9967 directory specifications. */
9968 if (index (cp1, '/') == 0) {
9969 /* Just add "000000]" as the directory string */
9970 strcpy (cp2, "000000]");
9971 cp2 += strlen (cp2);
9972 check_filename_before_returning = 1; /* we might need to fool with this later */
9974 /* As long as there are still subdirectories to add, do them. */
9975 while (index (cp1, '/') != 0) {
9976 /* If this token is "." we can ignore it */
9977 if ((cp1[0] == '.') && (cp1[1] == '/')) {
9981 /* Add a subdirectory spec. Do not duplicate "." */
9982 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
9984 /* If this is ".." then the spec becomes "-" */
9985 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
9986 /* Add "-" and skip the ".." */
9991 /* Copy the subdirectory */
9992 while (*cp1 != '/') *cp2++= *cp1++;
9993 cp1++; /* Skip the "/" */
9995 /* Close the directory specification */
9996 if (cp2[-1] == '.') /* no trailing periods */
10000 /* Now add the filename */
10001 while (*cp1) *cp2++ = *cp1++;
10003 /* Now append it to the original VMS spec. */
10004 strcpy (cp, Local);
10006 /* If we put a [000000] in the filename, try to open it first. If this fails,
10007 remove the [000000], and return that name. This provides flexibility
10008 to the user in that they can use both rooted and non-rooted logical names
10009 to point to the location of the file. */
10011 if (check_filename_before_returning && no_prefix_seen) {
10012 f = open (fname, O_RDONLY, 0666);
10014 /* The file name is OK as it is, so return it as is. */
10018 /* The filename did not work. Try to remove the [000000] from the name,
10020 cp = index (fname, '[');
10021 cp2 = index (fname, ']') + 1;
10022 strcpy (cp, cp2); /* this gets rid of it */
10030 /* These are the read/write replacement routines for
10031 VAX-11 "C". They make read/write behave enough
10032 like their UNIX counterparts that CCCP will work */
10035 read (fd, buf, size)
10040 #undef read /* Get back the REAL read routine */
10042 register int total = 0;
10044 /* Read until the buffer is exhausted */
10046 /* Limit each read to 32KB */
10047 i = (size > (32*1024)) ? (32*1024) : size;
10048 i = read (fd, buf, i);
10050 if (i == 0) return (total);
10053 /* Account for this read */
10062 write (fd, buf, size)
10067 #undef write /* Get back the REAL write routine */
10071 /* Limit individual writes to 32Kb */
10074 j = (i > (32*1024)) ? (32*1024) : i;
10075 if (write (fd, buf, j) < 0) return (-1);
10076 /* Account for the data written */
10083 /* The following wrapper functions supply additional arguments to the VMS
10084 I/O routines to optimize performance with file handling. The arguments
10086 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
10087 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
10088 "fop=tef"- Truncate unused portions of file when closing file.
10089 "shr=nil"- Disallow file sharing while file is open.
10093 freopen (fname, type, oldfile)
10098 #undef freopen /* Get back the REAL fopen routine */
10099 if (strcmp (type, "w") == 0)
10100 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
10101 return freopen (fname, type, oldfile, "mbc=16");
10105 fopen (fname, type)
10109 #undef fopen /* Get back the REAL fopen routine */
10110 /* The gcc-vms-1.42 distribution's header files prototype fopen with two
10111 fixed arguments, which matches ANSI's specification but not VAXCRTL's
10112 pre-ANSI implmentation. This hack circumvents the mismatch problem. */
10113 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
10116 return (*vmslib_fopen) (fname, type, "mbc=32",
10117 "deq=64", "fop=tef", "shr=nil");
10119 return (*vmslib_fopen) (fname, type, "mbc=32");
10123 open (fname, flags, prot)
10128 #undef open /* Get back the REAL open routine */
10129 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
10132 /* Avoid run-time library bug, where copying M out of N+M characters with
10133 N >= 65535 results in VAXCRTL's strncat falling into an infinite loop.
10134 gcc-cpp exercises this particular bug. */
10137 strncat (dst, src, cnt)
10142 register char *d = dst, *s = (char *) src;
10143 register int n = cnt; /* convert to _signed_ type */
10145 while (*d) d++; /* advance to end */
10147 if (!(*d++ = *s++)) break;
10148 if (n < 0) *d = '\0';