1 /* C Compatible Compiler Preprocessor (CCCP)
2 Copyright (C) 1986, 87, 89, 92, 93, 1994 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
64 /* By default, colon separates directories in a path. */
65 #ifndef PATH_SEPARATOR
66 #define PATH_SEPARATOR ':'
69 /* In case config.h defines these. */
74 #include <sys/types.h>
82 #include <sys/time.h> /* for __DATE__ and __TIME__ */
83 #include <sys/resource.h>
90 /* This defines "errno" properly for VMS, and gives us EACCES. */
93 /* VMS-specific definitions */
97 #define O_RDONLY 0 /* Open arg for Read/Only */
98 #define O_WRONLY 1 /* Open arg for Write/Only */
99 #define read(fd,buf,size) VMS_read (fd,buf,size)
100 #define write(fd,buf,size) VMS_write (fd,buf,size)
101 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
102 #define fopen(fname,mode) VMS_fopen (fname,mode)
103 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
104 #define strncat(dst,src,cnt) VMS_strncat (dst,src,cnt)
105 static char * VMS_strncat ();
106 static int VMS_read ();
107 static int VMS_write ();
108 static int VMS_open ();
109 static FILE * VMS_fopen ();
110 static FILE * VMS_freopen ();
111 static void hack_vms_include_specification ();
112 typedef struct { unsigned :16, :16, :16; } vms_ino_t;
113 #define ino_t vms_ino_t
114 #define INCLUDE_LEN_FUDGE 10 /* leave room for VMS syntax conversion */
116 #define BSTRING /* VMS/GCC supplies the bstring routines */
117 #endif /* __GNUC__ */
120 extern char *index ();
121 extern char *rindex ();
129 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
130 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
132 /* Find the largest host integer type and set its size and type. */
134 #ifndef HOST_BITS_PER_WIDE_INT
136 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
137 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
138 #define HOST_WIDE_INT long
140 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
141 #define HOST_WIDE_INT int
147 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
151 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
154 /* Define a generic NULL if one hasn't already been defined. */
161 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
162 #define GENERIC_PTR void *
164 #define GENERIC_PTR char *
169 #define NULL_PTR ((GENERIC_PTR)0)
172 #ifndef INCLUDE_LEN_FUDGE
173 #define INCLUDE_LEN_FUDGE 0
176 /* Forward declarations. */
182 /* External declarations. */
184 extern char *getenv ();
185 extern FILE *fdopen ();
186 extern char *version_string;
187 extern struct tm *localtime ();
189 #ifndef HAVE_STRERROR
191 #if defined(bsd4_4) || defined(__NetBSD__)
192 extern const char *const sys_errlist[];
194 extern char *sys_errlist[];
196 #else /* HAVE_STERRROR */
200 char *strerror (int,...);
202 extern int parse_escape ();
203 extern HOST_WIDE_INT parse_c_expression ();
209 /* Forward declarations. */
216 #if defined(USG) || defined(VMS)
224 /* These functions are declared to return int instead of void since they
225 are going to be placed in a table and some old compilers have trouble with
226 pointers to functions returning void. */
228 static int do_define ();
229 static int do_line ();
230 static int do_include ();
231 static int do_undef ();
232 static int do_error ();
233 static int do_pragma ();
234 static int do_ident ();
236 static int do_xifdef ();
237 static int do_else ();
238 static int do_elif ();
239 static int do_endif ();
240 static int do_sccs ();
241 static int do_once ();
242 static int do_assert ();
243 static int do_unassert ();
244 static int do_warning ();
246 static void add_import ();
247 static void append_include_chain ();
248 static void deps_output ();
249 static void make_undef ();
250 static void make_definition ();
251 static void make_assertion ();
252 static void path_include ();
253 static void initialize_builtins ();
254 static void initialize_char_syntax ();
255 static void dump_arg_n ();
256 static void dump_defn_1 ();
257 static void delete_macro ();
258 static void trigraph_pcp ();
259 static void rescan ();
260 static void finclude ();
261 static void validate_else ();
262 static int comp_def_part ();
263 static void error_from_errno ();
264 static void error_with_line ();
266 void pedwarn_with_line ();
267 static void pedwarn_with_file_and_line ();
268 static void fatal ();
270 static void pfatal_with_name ();
271 static void perror_with_name ();
272 static void pipe_closed ();
273 static void print_containing_files ();
274 static int lookup_import ();
275 static int redundant_include_p ();
276 static is_system_include ();
277 static struct file_name_map *read_name_map ();
278 static char *read_filename_string ();
279 static int open_include_file ();
280 static int check_preconditions ();
281 static void pcfinclude ();
282 static void pcstring_used ();
283 static void write_output ();
284 static int check_macro_name ();
285 static int compare_defs ();
286 static int compare_token_lists ();
287 static HOST_WIDE_INT eval_if_expression ();
288 static int discard_comments ();
289 static int change_newlines ();
290 static int line_for_error ();
292 static int file_size_and_mode ();
294 static struct arglist *read_token_list ();
295 static void free_token_list ();
297 static struct hashnode *install ();
298 struct hashnode *lookup ();
300 static struct assertion_hashnode *assertion_install ();
301 static struct assertion_hashnode *assertion_lookup ();
303 static char *xrealloc ();
304 static char *xcalloc ();
305 static char *savestring ();
307 static void delete_assertion ();
308 static void macroexpand ();
309 static void dump_all_macros ();
310 static void conditional_skip ();
311 static void skip_if_group ();
312 static void output_line_command ();
314 /* Last arg to output_line_command. */
315 enum file_change_code {same_file, enter_file, leave_file};
317 static int grow_outbuf ();
318 static int handle_directive ();
319 static void memory_full ();
321 static U_CHAR *macarg1 ();
322 static char *macarg ();
324 static U_CHAR *skip_to_end_of_comment ();
325 static U_CHAR *skip_quoted_string ();
326 static U_CHAR *skip_paren_group ();
327 static char *quote_string ();
329 static char *check_precompiled ();
330 /* static struct macrodef create_definition (); [moved below] */
331 static void dump_single_macro ();
332 static void output_dots ();
334 #ifndef FAILURE_EXIT_CODE
335 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
338 #ifndef SUCCESS_EXIT_CODE
339 #define SUCCESS_EXIT_CODE 0 /* 0 means success on Unix. */
342 /* Name under which this program was invoked. */
344 static char *progname;
346 /* Nonzero means use extra default include directories for C++. */
348 static int cplusplus;
350 /* Nonzero means handle cplusplus style comments */
352 static int cplusplus_comments;
354 /* Nonzero means handle #import, for objective C. */
358 /* Nonzero means this is an assembly file, and allow
359 unknown directives, which could be comments. */
363 /* Current maximum length of directory names in the search path
364 for include files. (Altered as we get more of them.) */
366 static int max_include_len;
368 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
370 static int for_lint = 0;
372 /* Nonzero means copy comments into the output file. */
374 static int put_out_comments = 0;
376 /* Nonzero means don't process the ANSI trigraph sequences. */
378 static int no_trigraphs = 0;
380 /* Nonzero means print the names of included files rather than
381 the preprocessed output. 1 means just the #include "...",
382 2 means #include <...> as well. */
384 static int print_deps = 0;
386 /* Nonzero if missing .h files in -M output are assumed to be generated
387 files and not errors. */
389 static int print_deps_missing_files = 0;
391 /* Nonzero means print names of header files (-H). */
393 static int print_include_names = 0;
395 /* Nonzero means don't output line number information. */
397 static int no_line_commands;
399 /* Nonzero means output the text in failing conditionals,
400 inside #failed ... #endfailed. */
402 static int output_conditionals;
404 /* dump_only means inhibit output of the preprocessed text
405 and instead output the definitions of all user-defined
406 macros in a form suitable for use as input to cccp.
407 dump_names means pass #define and the macro name through to output.
408 dump_definitions means pass the whole definition (plus #define) through
411 static enum {dump_none, dump_only, dump_names, dump_definitions}
412 dump_macros = dump_none;
414 /* Nonzero means pass all #define and #undef directives which we actually
415 process through to the output stream. This feature is used primarily
416 to allow cc1 to record the #defines and #undefs for the sake of
417 debuggers which understand about preprocessor macros, but it may
418 also be useful with -E to figure out how symbols are defined, and
419 where they are defined. */
420 static int debug_output = 0;
422 /* Nonzero indicates special processing used by the pcp program. The
423 special effects of this mode are:
425 Inhibit all macro expansion, except those inside #if directives.
427 Process #define directives normally, and output their contents
430 Output preconditions to pcp_outfile indicating all the relevant
431 preconditions for use of this file in a later cpp run.
433 static FILE *pcp_outfile;
435 /* Nonzero means we are inside an IF during a -pcp run. In this mode
436 macro expansion is done, and preconditions are output for all macro
437 uses requiring them. */
438 static int pcp_inside_if;
440 /* Nonzero means never to include precompiled files.
441 This is 1 since there's no way now to make precompiled files,
442 so it's not worth testing for them. */
443 static int no_precomp = 1;
445 /* Nonzero means give all the error messages the ANSI standard requires. */
449 /* Nonzero means try to make failure to fit ANSI C an error. */
451 static int pedantic_errors;
453 /* Nonzero means don't print warning messages. -w. */
455 static int inhibit_warnings = 0;
457 /* Nonzero means warn if slash-star appears in a comment. */
459 static int warn_comments;
461 /* Nonzero means warn if a macro argument is (or would be)
462 stringified with -traditional. */
464 static int warn_stringify;
466 /* Nonzero means warn if there are any trigraphs. */
468 static int warn_trigraphs;
470 /* Nonzero means warn if #import is used. */
472 static int warn_import = 1;
474 /* Nonzero means turn warnings into errors. */
476 static int warnings_are_errors;
478 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
482 /* Nonzero causes output not to be done,
483 but directives such as #define that have side effects
486 static int no_output;
488 /* Nonzero means this file was included with a -imacros or -include
489 command line and should not be recorded as an include file. */
491 static int no_record_file;
493 /* Nonzero means that we have finished processing the command line options.
494 This flag is used to decide whether or not to issue certain errors
497 static int done_initializing = 0;
499 /* Line where a newline was first seen in a string constant. */
501 static int multiline_string_line = 0;
503 /* I/O buffer structure.
504 The `fname' field is nonzero for source files and #include files
505 and for the dummy text used for -D and -U.
506 It is zero for rescanning results of macro expansion
507 and for expanding macro arguments. */
508 #define INPUT_STACK_MAX 400
509 static struct file_buf {
511 /* Filename specified with #line command. */
513 /* Record where in the search path this file was found.
514 For #include_next. */
515 struct file_name_list *dir;
520 /* Macro that this level is the expansion of.
521 Included so that we can reenable the macro
522 at the end of this level. */
523 struct hashnode *macro;
524 /* Value of if_stack at start of this file.
525 Used to prohibit unmatched #endif (etc) in an include file. */
526 struct if_stack *if_stack;
527 /* Object to be freed at end of input at this level. */
529 /* True if this is a header file included using <FILENAME>. */
530 char system_header_p;
531 } instack[INPUT_STACK_MAX];
533 static int last_error_tick; /* Incremented each time we print it. */
534 static int input_file_stack_tick; /* Incremented when the status changes. */
536 /* Current nesting level of input sources.
537 `instack[indepth]' is the level currently being read. */
538 static int indepth = -1;
539 #define CHECK_DEPTH(code) \
540 if (indepth >= (INPUT_STACK_MAX - 1)) \
542 error_with_line (line_for_error (instack[indepth].lineno), \
543 "macro or `#include' recursion too deep"); \
547 /* Current depth in #include directives that use <...>. */
548 static int system_include_depth = 0;
550 typedef struct file_buf FILE_BUF;
552 /* The output buffer. Its LENGTH field is the amount of room allocated
553 for the buffer, not the number of chars actually present. To get
554 that, subtract outbuf.buf from outbuf.bufp. */
556 #define OUTBUF_SIZE 10 /* initial size of output buffer */
557 static FILE_BUF outbuf;
559 /* Grow output buffer OBUF points at
560 so it can hold at least NEEDED more chars. */
562 #define check_expand(OBUF, NEEDED) \
563 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
564 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
566 struct file_name_list
568 struct file_name_list *next;
570 /* If the following is nonzero, it is a macro name.
571 Don't include the file again if that macro is defined. */
572 U_CHAR *control_macro;
573 /* If the following is nonzero, it is a C-language system include
575 int c_system_include_path;
576 /* Mapping of file names for this directory. */
577 struct file_name_map *name_map;
578 /* Non-zero if name_map is valid. */
582 /* #include "file" looks in source file dir, then stack. */
583 /* #include <file> just looks in the stack. */
584 /* -I directories are added to the end, then the defaults are added. */
586 static struct default_include {
587 char *fname; /* The name of the directory. */
588 int cplusplus; /* Only look here if we're compiling C++. */
589 int cxx_aware; /* Includes in this directory don't need to
590 be wrapped in extern "C" when compiling
592 } include_defaults_array[]
593 #ifdef INCLUDE_DEFAULTS
597 /* Pick up GNU C++ specific include files. */
598 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
600 /* This is the dir for fixincludes. Put it just before
601 the files that we fix. */
602 { GCC_INCLUDE_DIR, 0, 0 },
603 /* For cross-compilation, this dir name is generated
604 automatically in Makefile.in. */
605 { CROSS_INCLUDE_DIR, 0, 0 },
606 /* This is another place that the target system's headers might be. */
607 { TOOL_INCLUDE_DIR, 0, 1 },
608 #else /* not CROSS_COMPILE */
609 /* This should be /usr/local/include and should come before
610 the fixincludes-fixed header files. */
611 { LOCAL_INCLUDE_DIR, 0, 1 },
612 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
613 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
614 { TOOL_INCLUDE_DIR, 0, 1 },
615 /* This is the dir for fixincludes. Put it just before
616 the files that we fix. */
617 { GCC_INCLUDE_DIR, 0, 0 },
618 /* Some systems have an extra dir of include files. */
619 #ifdef SYSTEM_INCLUDE_DIR
620 { SYSTEM_INCLUDE_DIR, 0, 0 },
622 { STANDARD_INCLUDE_DIR, 0, 0 },
623 #endif /* not CROSS_COMPILE */
626 #endif /* no INCLUDE_DEFAULTS */
628 /* The code looks at the defaults through this pointer, rather than through
629 the constant structure above. This pointer gets changed if an environment
630 variable specifies other defaults. */
631 static struct default_include *include_defaults = include_defaults_array;
633 static struct file_name_list *include = 0; /* First dir to search */
634 /* First dir to search for <file> */
635 /* This is the first element to use for #include <...>.
636 If it is 0, use the entire chain for such includes. */
637 static struct file_name_list *first_bracket_include = 0;
638 /* This is the first element in the chain that corresponds to
639 a directory of system header files. */
640 static struct file_name_list *first_system_include = 0;
641 static struct file_name_list *last_include = 0; /* Last in chain */
643 /* Chain of include directories to put at the end of the other chain. */
644 static struct file_name_list *after_include = 0;
645 static struct file_name_list *last_after_include = 0; /* Last in chain */
647 /* Chain to put at the start of the system include files. */
648 static struct file_name_list *before_system = 0;
649 static struct file_name_list *last_before_system = 0; /* Last in chain */
651 /* List of included files that contained #pragma once. */
652 static struct file_name_list *dont_repeat_files = 0;
654 /* List of other included files.
655 If ->control_macro if nonzero, the file had a #ifndef
656 around the entire contents, and ->control_macro gives the macro name. */
657 static struct file_name_list *all_include_files = 0;
659 /* Directory prefix that should replace `/usr' in the standard
660 include file directories. */
661 static char *include_prefix;
663 /* Global list of strings read in from precompiled files. This list
664 is kept in the order the strings are read in, with new strings being
665 added at the end through stringlist_tailp. We use this list to output
666 the strings at the end of the run.
668 static STRINGDEF *stringlist;
669 static STRINGDEF **stringlist_tailp = &stringlist;
672 /* Structure returned by create_definition */
673 typedef struct macrodef MACRODEF;
676 struct definition *defn;
681 static struct macrodef create_definition ();
684 /* Structure allocated for every #define. For a simple replacement
687 nargs = -1, the `pattern' list is null, and the expansion is just
688 the replacement text. Nargs = 0 means a functionlike macro with no args,
690 #define getchar() getc (stdin) .
691 When there are args, the expansion is the replacement text with the
692 args squashed out, and the reflist is a list describing how to
693 build the output from the input: e.g., "3 chars, then the 1st arg,
694 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
695 The chars here come from the expansion. Whatever is left of the
696 expansion after the last arg-occurrence is copied after that arg.
697 Note that the reflist can be arbitrarily long---
698 its length depends on the number of times the arguments appear in
699 the replacement text, not how many args there are. Example:
700 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
702 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
703 where (x, y) means (nchars, argno). */
705 typedef struct definition DEFINITION;
708 int length; /* length of expansion string */
709 int predefined; /* True if the macro was builtin or */
710 /* came from the command line */
712 int line; /* Line number of definition */
713 char *file; /* File of definition */
714 char rest_args; /* Nonzero if last arg. absorbs the rest */
716 struct reflist *next;
717 char stringify; /* nonzero if this arg was preceded by a
719 char raw_before; /* Nonzero if a ## operator before arg. */
720 char raw_after; /* Nonzero if a ## operator after arg. */
721 char rest_args; /* Nonzero if this arg. absorbs the rest */
722 int nchars; /* Number of literal chars to copy before
723 this arg occurrence. */
724 int argno; /* Number of arg to substitute (origin-0) */
727 /* Names of macro args, concatenated in reverse order
728 with comma-space between them.
729 The only use of this is that we warn on redefinition
730 if this differs between the old and new definitions. */
735 /* different kinds of things that can appear in the value field
736 of a hash node. Actually, this may be useless now. */
745 * special extension string that can be added to the last macro argument to
746 * allow it to absorb the "rest" of the arguments when expanded. Ex:
747 * #define wow(a, b...) process (b, a, b)
748 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
749 * { wow (one, two); } -> { process (two, one, two); }
750 * if this "rest_arg" is used with the concat token '##' and if it is not
751 * supplied then the token attached to with ## will not be outputted. Ex:
752 * #define wow (a, b...) process (b ## , a, ## b)
753 * { wow (1, 2); } -> { process (2, 1, 2); }
754 * { wow (one); } -> { process (one); {
756 static char rest_extension[] = "...";
757 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
759 /* The structure of a node in the hash table. The hash table
760 has entries for all tokens defined by #define commands (type T_MACRO),
761 plus some special tokens like __LINE__ (these each have their own
762 type, and the appropriate code is run when that type of node is seen.
763 It does not contain control words like "#define", which are recognized
764 by a separate piece of code. */
766 /* different flavors of hash nodes --- also used in keyword table */
768 T_DEFINE = 1, /* the `#define' keyword */
769 T_INCLUDE, /* the `#include' keyword */
770 T_INCLUDE_NEXT, /* the `#include_next' keyword */
771 T_IMPORT, /* the `#import' keyword */
772 T_IFDEF, /* the `#ifdef' keyword */
773 T_IFNDEF, /* the `#ifndef' keyword */
774 T_IF, /* the `#if' keyword */
775 T_ELSE, /* `#else' */
776 T_PRAGMA, /* `#pragma' */
777 T_ELIF, /* `#elif' */
778 T_UNDEF, /* `#undef' */
779 T_LINE, /* `#line' */
780 T_ERROR, /* `#error' */
781 T_WARNING, /* `#warning' */
782 T_ENDIF, /* `#endif' */
783 T_SCCS, /* `#sccs', used on system V. */
784 T_IDENT, /* `#ident', used on system V. */
785 T_ASSERT, /* `#assert', taken from system V. */
786 T_UNASSERT, /* `#unassert', taken from system V. */
787 T_SPECLINE, /* special symbol `__LINE__' */
788 T_DATE, /* `__DATE__' */
789 T_FILE, /* `__FILE__' */
790 T_BASE_FILE, /* `__BASE_FILE__' */
791 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
792 T_VERSION, /* `__VERSION__' */
793 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
794 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
795 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
796 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
797 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
798 T_TIME, /* `__TIME__' */
799 T_CONST, /* Constant value, used by `__STDC__' */
800 T_MACRO, /* macro defined by `#define' */
801 T_DISABLED, /* macro temporarily turned off for rescan */
802 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
803 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
804 T_UNUSED /* Used for something not defined. */
808 struct hashnode *next; /* double links for easy deletion */
809 struct hashnode *prev;
810 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
811 chain is kept, in case the node is the head
812 of the chain and gets deleted. */
813 enum node_type type; /* type of special token */
814 int length; /* length of token, for quick comparison */
815 U_CHAR *name; /* the actual name */
816 union hashval value; /* pointer to expansion, or whatever */
819 typedef struct hashnode HASHNODE;
821 /* Some definitions for the hash table. The hash function MUST be
822 computed as shown in hashf () below. That is because the rescan
823 loop computes the hash value `on the fly' for most tokens,
824 in order to avoid the overhead of a lot of procedure calls to
825 the hashf () function. Hashf () only exists for the sake of
826 politeness, for use when speed isn't so important. */
828 #define HASHSIZE 1403
829 static HASHNODE *hashtab[HASHSIZE];
830 #define HASHSTEP(old, c) ((old << 2) + c)
831 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
833 /* Symbols to predefine. */
835 #ifdef CPP_PREDEFINES
836 static char *predefs = CPP_PREDEFINES;
838 static char *predefs = "";
841 /* We let tm.h override the types used here, to handle trivial differences
842 such as the choice of unsigned int or long unsigned int for size_t.
843 When machines start needing nontrivial differences in the size type,
844 it would be best to do something here to figure out automatically
845 from other information what type to use. */
847 /* The string value for __SIZE_TYPE__. */
850 #define SIZE_TYPE "long unsigned int"
853 /* The string value for __PTRDIFF_TYPE__. */
856 #define PTRDIFF_TYPE "long int"
859 /* The string value for __WCHAR_TYPE__. */
862 #define WCHAR_TYPE "int"
864 char * wchar_type = WCHAR_TYPE;
867 /* The string value for __USER_LABEL_PREFIX__ */
869 #ifndef USER_LABEL_PREFIX
870 #define USER_LABEL_PREFIX ""
873 /* The string value for __REGISTER_PREFIX__ */
875 #ifndef REGISTER_PREFIX
876 #define REGISTER_PREFIX ""
879 /* In the definition of a #assert name, this structure forms
880 a list of the individual values asserted.
881 Each value is itself a list of "tokens".
882 These are strings that are compared by name. */
884 struct tokenlist_list {
885 struct tokenlist_list *next;
886 struct arglist *tokens;
889 struct assertion_hashnode {
890 struct assertion_hashnode *next; /* double links for easy deletion */
891 struct assertion_hashnode *prev;
892 /* also, a back pointer to this node's hash
893 chain is kept, in case the node is the head
894 of the chain and gets deleted. */
895 struct assertion_hashnode **bucket_hdr;
896 int length; /* length of token, for quick comparison */
897 U_CHAR *name; /* the actual name */
898 /* List of token-sequences. */
899 struct tokenlist_list *value;
902 typedef struct assertion_hashnode ASSERTION_HASHNODE;
904 /* Some definitions for the hash table. The hash function MUST be
905 computed as shown in hashf below. That is because the rescan
906 loop computes the hash value `on the fly' for most tokens,
907 in order to avoid the overhead of a lot of procedure calls to
908 the hashf function. hashf only exists for the sake of
909 politeness, for use when speed isn't so important. */
911 #define ASSERTION_HASHSIZE 37
912 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
914 /* Nonzero means inhibit macroexpansion of what seem to be
915 assertion tests, in rescan. For #if. */
916 static int assertions_flag;
918 /* `struct directive' defines one #-directive, including how to handle it. */
921 int length; /* Length of name */
922 int (*func)(); /* Function to handle directive */
923 char *name; /* Name of directive */
924 enum node_type type; /* Code which describes which directive. */
925 char angle_brackets; /* Nonzero => <...> is special. */
926 char traditional_comments; /* Nonzero: keep comments if -traditional. */
927 char pass_thru; /* Copy preprocessed directive to output file. */
930 /* Here is the actual list of #-directives, most-often-used first. */
932 static struct directive directive_table[] = {
933 { 6, do_define, "define", T_DEFINE, 0, 1},
934 { 2, do_if, "if", T_IF},
935 { 5, do_xifdef, "ifdef", T_IFDEF},
936 { 6, do_xifdef, "ifndef", T_IFNDEF},
937 { 5, do_endif, "endif", T_ENDIF},
938 { 4, do_else, "else", T_ELSE},
939 { 4, do_elif, "elif", T_ELIF},
940 { 4, do_line, "line", T_LINE},
941 { 7, do_include, "include", T_INCLUDE, 1},
942 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
943 { 6, do_include, "import", T_IMPORT, 1},
944 { 5, do_undef, "undef", T_UNDEF},
945 { 5, do_error, "error", T_ERROR},
946 { 7, do_warning, "warning", T_WARNING},
947 #ifdef SCCS_DIRECTIVE
948 { 4, do_sccs, "sccs", T_SCCS},
950 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
951 { 5, do_ident, "ident", T_IDENT},
952 { 6, do_assert, "assert", T_ASSERT},
953 { 8, do_unassert, "unassert", T_UNASSERT},
954 { -1, 0, "", T_UNUSED},
957 /* When a directive handler is called,
958 this points to the # that started the directive. */
959 U_CHAR *directive_start;
961 /* table to tell if char can be part of a C identifier. */
962 U_CHAR is_idchar[256];
963 /* table to tell if char can be first char of a c identifier. */
964 U_CHAR is_idstart[256];
965 /* table to tell if c is horizontal space. */
966 U_CHAR is_hor_space[256];
967 /* table to tell if c is horizontal or vertical space. */
968 static U_CHAR is_space[256];
970 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
971 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
973 static int errors = 0; /* Error counter for exit code */
975 /* Name of output file, for error messages. */
976 static char *out_fname;
978 /* Zero means dollar signs are punctuation.
979 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
980 This must be 0 for correct processing of this ANSI C program:
982 #define lose(b) foo (b)
985 static int dollars_in_ident;
986 #ifndef DOLLARS_IN_IDENTIFIERS
987 #define DOLLARS_IN_IDENTIFIERS 1
990 static FILE_BUF expand_to_temp_buffer ();
992 static DEFINITION *collect_expansion ();
994 /* Stack of conditionals currently in progress
995 (including both successful and failing conditionals). */
998 struct if_stack *next; /* for chaining to the next stack frame */
999 char *fname; /* copied from input when frame is made */
1000 int lineno; /* similarly */
1001 int if_succeeded; /* true if a leg of this if-group
1002 has been passed through rescan */
1003 U_CHAR *control_macro; /* For #ifndef at start of file,
1004 this is the macro name tested. */
1005 enum node_type type; /* type of last directive seen in this group */
1007 typedef struct if_stack IF_STACK_FRAME;
1008 static IF_STACK_FRAME *if_stack = NULL;
1010 /* Buffer of -M output. */
1011 static char *deps_buffer;
1013 /* Number of bytes allocated in above. */
1014 static int deps_allocated_size;
1016 /* Number of bytes used. */
1017 static int deps_size;
1019 /* Number of bytes since the last newline. */
1020 static int deps_column;
1022 /* Nonzero means -I- has been seen,
1023 so don't look for #include "foo" the source-file directory. */
1024 static int ignore_srcdir;
1026 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1027 retrying if necessary. Return a negative value if an error occurs,
1028 otherwise return the actual number of bytes read,
1029 which must be LEN unless end-of-file was reached. */
1032 safe_read (desc, ptr, len)
1039 int nchars = read (desc, ptr, left);
1056 /* Write LEN bytes at PTR to descriptor DESC,
1057 retrying if necessary, and treating any real error as fatal. */
1060 safe_write (desc, ptr, len)
1066 int written = write (desc, ptr, len);
1073 pfatal_with_name (out_fname);
1091 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1092 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1093 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1094 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1095 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1097 /* Record the option used with each element of pend_assertions.
1098 This is preparation for supporting more than one option for making
1100 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1101 int inhibit_predefs = 0;
1102 int no_standard_includes = 0;
1103 int no_standard_cplusplus_includes = 0;
1104 int missing_newline = 0;
1106 /* Non-0 means don't output the preprocessed program. */
1107 int inhibit_output = 0;
1108 /* Non-0 means -v, so print the full set of include dirs. */
1111 /* File name which deps are being written to.
1112 This is 0 if deps are being written to stdout. */
1113 char *deps_file = 0;
1114 /* Fopen file mode to open deps_file with. */
1115 char *deps_mode = "a";
1116 /* Stream on which to print the dependency information. */
1117 FILE *deps_stream = 0;
1118 /* Target-name to write with the dependency information. */
1119 char *deps_target = 0;
1122 /* Get rid of any avoidable limit on stack size. */
1126 /* Set the stack limit huge so that alloca (particularly stringtab
1127 * in dbxread.c) does not fail. */
1128 getrlimit (RLIMIT_STACK, &rlim);
1129 rlim.rlim_cur = rlim.rlim_max;
1130 setrlimit (RLIMIT_STACK, &rlim);
1132 #endif /* RLIMIT_STACK defined */
1135 signal (SIGPIPE, pipe_closed);
1138 p = argv[0] + strlen (argv[0]);
1139 while (p != argv[0] && p[-1] != '/'
1140 #ifdef DIR_SEPARATOR
1141 && p[-1] != DIR_SEPARATOR
1149 /* Remove directories from PROGNAME. */
1152 progname = savestring (argv[0]);
1154 if (!(s = rindex (progname, ']')))
1155 s = rindex (progname, ':');
1157 strcpy (progname, s+1);
1158 if (s = rindex (progname, '.'))
1166 /* Initialize is_idchar to allow $. */
1167 dollars_in_ident = 1;
1168 initialize_char_syntax ();
1169 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1171 no_line_commands = 0;
1173 dump_macros = dump_none;
1176 cplusplus_comments = 0;
1178 bzero ((char *) pend_files, argc * sizeof (char *));
1179 bzero ((char *) pend_defs, argc * sizeof (char *));
1180 bzero ((char *) pend_undefs, argc * sizeof (char *));
1181 bzero ((char *) pend_assertions, argc * sizeof (char *));
1182 bzero ((char *) pend_includes, argc * sizeof (char *));
1184 /* Process switches and find input file name. */
1186 for (i = 1; i < argc; i++) {
1187 if (argv[i][0] != '-') {
1188 if (out_fname != NULL)
1189 fatal ("Usage: %s [switches] input output", argv[0]);
1190 else if (in_fname != NULL)
1191 out_fname = argv[i];
1195 switch (argv[i][1]) {
1198 if (!strcmp (argv[i], "-include")) {
1200 fatal ("Filename missing after `-include' option");
1202 pend_includes[i] = argv[i+1], i++;
1204 if (!strcmp (argv[i], "-imacros")) {
1206 fatal ("Filename missing after `-imacros' option");
1208 pend_files[i] = argv[i+1], i++;
1210 if (!strcmp (argv[i], "-iprefix")) {
1212 fatal ("Filename missing after `-iprefix' option");
1214 include_prefix = argv[++i];
1216 if (!strcmp (argv[i], "-ifoutput")) {
1217 output_conditionals = 1;
1219 if (!strcmp (argv[i], "-isystem")) {
1220 struct file_name_list *dirtmp;
1223 fatal ("Filename missing after `-isystem' option");
1225 dirtmp = (struct file_name_list *)
1226 xmalloc (sizeof (struct file_name_list));
1228 dirtmp->control_macro = 0;
1229 dirtmp->c_system_include_path = 1;
1230 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1]) + 1);
1231 strcpy (dirtmp->fname, argv[++i]);
1232 dirtmp->got_name_map = 0;
1234 if (before_system == 0)
1235 before_system = dirtmp;
1237 last_before_system->next = dirtmp;
1238 last_before_system = dirtmp; /* Tail follows the last one */
1240 /* Add directory to end of path for includes,
1241 with the default prefix at the front of its name. */
1242 if (!strcmp (argv[i], "-iwithprefix")) {
1243 struct file_name_list *dirtmp;
1246 if (include_prefix != 0)
1247 prefix = include_prefix;
1249 prefix = savestring (GCC_INCLUDE_DIR);
1250 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1251 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1252 prefix[strlen (prefix) - 7] = 0;
1255 dirtmp = (struct file_name_list *)
1256 xmalloc (sizeof (struct file_name_list));
1257 dirtmp->next = 0; /* New one goes on the end */
1258 dirtmp->control_macro = 0;
1259 dirtmp->c_system_include_path = 0;
1261 fatal ("Directory name missing after `-iwithprefix' option");
1263 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1264 + strlen (prefix) + 1);
1265 strcpy (dirtmp->fname, prefix);
1266 strcat (dirtmp->fname, argv[++i]);
1267 dirtmp->got_name_map = 0;
1269 if (after_include == 0)
1270 after_include = dirtmp;
1272 last_after_include->next = dirtmp;
1273 last_after_include = dirtmp; /* Tail follows the last one */
1275 /* Add directory to main path for includes,
1276 with the default prefix at the front of its name. */
1277 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1278 struct file_name_list *dirtmp;
1281 if (include_prefix != 0)
1282 prefix = include_prefix;
1284 prefix = savestring (GCC_INCLUDE_DIR);
1285 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1286 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1287 prefix[strlen (prefix) - 7] = 0;
1290 dirtmp = (struct file_name_list *)
1291 xmalloc (sizeof (struct file_name_list));
1292 dirtmp->next = 0; /* New one goes on the end */
1293 dirtmp->control_macro = 0;
1294 dirtmp->c_system_include_path = 0;
1296 fatal ("Directory name missing after `-iwithprefixbefore' option");
1298 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1299 + strlen (prefix) + 1);
1300 strcpy (dirtmp->fname, prefix);
1301 strcat (dirtmp->fname, argv[++i]);
1302 dirtmp->got_name_map = 0;
1304 append_include_chain (dirtmp, dirtmp);
1306 /* Add directory to end of path for includes. */
1307 if (!strcmp (argv[i], "-idirafter")) {
1308 struct file_name_list *dirtmp;
1310 dirtmp = (struct file_name_list *)
1311 xmalloc (sizeof (struct file_name_list));
1312 dirtmp->next = 0; /* New one goes on the end */
1313 dirtmp->control_macro = 0;
1314 dirtmp->c_system_include_path = 0;
1316 fatal ("Directory name missing after `-idirafter' option");
1318 dirtmp->fname = argv[++i];
1319 dirtmp->got_name_map = 0;
1321 if (after_include == 0)
1322 after_include = dirtmp;
1324 last_after_include->next = dirtmp;
1325 last_after_include = dirtmp; /* Tail follows the last one */
1330 if (out_fname != NULL)
1331 fatal ("Output filename specified twice");
1333 fatal ("Filename missing after -o option");
1334 out_fname = argv[++i];
1335 if (!strcmp (out_fname, "-"))
1340 if (!strcmp (argv[i], "-pedantic"))
1342 else if (!strcmp (argv[i], "-pedantic-errors")) {
1344 pedantic_errors = 1;
1345 } else if (!strcmp (argv[i], "-pcp")) {
1348 fatal ("Filename missing after -pcp option");
1349 pcp_fname = argv[++i];
1351 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1352 ? fopen (pcp_fname, "w")
1353 : fdopen (dup (fileno (stdout)), "w"));
1354 if (pcp_outfile == 0)
1355 pfatal_with_name (pcp_fname);
1361 if (!strcmp (argv[i], "-traditional")) {
1363 if (dollars_in_ident > 0)
1364 dollars_in_ident = 1;
1365 } else if (!strcmp (argv[i], "-trigraphs")) {
1371 if (! strcmp (argv[i], "-lang-c"))
1372 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1373 if (! strcmp (argv[i], "-lang-c++"))
1374 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1375 if (! strcmp (argv[i], "-lang-c-c++-comments"))
1376 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1377 if (! strcmp (argv[i], "-lang-objc"))
1378 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1379 if (! strcmp (argv[i], "-lang-objc++"))
1380 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1381 if (! strcmp (argv[i], "-lang-asm"))
1383 if (! strcmp (argv[i], "-lint"))
1388 cplusplus = 1, cplusplus_comments = 1;
1392 inhibit_warnings = 1;
1396 if (!strcmp (argv[i], "-Wtrigraphs"))
1398 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1400 else if (!strcmp (argv[i], "-Wcomment"))
1402 else if (!strcmp (argv[i], "-Wno-comment"))
1404 else if (!strcmp (argv[i], "-Wcomments"))
1406 else if (!strcmp (argv[i], "-Wno-comments"))
1408 else if (!strcmp (argv[i], "-Wtraditional"))
1410 else if (!strcmp (argv[i], "-Wno-traditional"))
1412 else if (!strcmp (argv[i], "-Wimport"))
1414 else if (!strcmp (argv[i], "-Wno-import"))
1416 else if (!strcmp (argv[i], "-Werror"))
1417 warnings_are_errors = 1;
1418 else if (!strcmp (argv[i], "-Wno-error"))
1419 warnings_are_errors = 0;
1420 else if (!strcmp (argv[i], "-Wall"))
1428 /* The style of the choices here is a bit mixed.
1429 The chosen scheme is a hybrid of keeping all options in one string
1430 and specifying each option in a separate argument:
1431 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1432 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1433 -M[M][G][D file]. This is awkward to handle in specs, and is not
1435 /* ??? -MG must be specified in addition to one of -M or -MM.
1436 This can be relaxed in the future without breaking anything.
1437 The converse isn't true. */
1439 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1440 if (!strcmp (argv[i], "-MG"))
1442 print_deps_missing_files = 1;
1445 if (!strcmp (argv[i], "-M"))
1447 else if (!strcmp (argv[i], "-MM"))
1449 else if (!strcmp (argv[i], "-MD"))
1451 else if (!strcmp (argv[i], "-MMD"))
1453 /* For -MD and -MMD options, write deps on file named by next arg. */
1454 if (!strcmp (argv[i], "-MD")
1455 || !strcmp (argv[i], "-MMD")) {
1457 fatal ("Filename missing after %s option", argv[i]);
1459 deps_file = argv[i];
1462 /* For -M and -MM, write deps on standard output
1463 and suppress the usual output. */
1464 deps_stream = stdout;
1471 char *p = argv[i] + 2;
1474 /* Arg to -d specifies what parts of macros to dump */
1477 dump_macros = dump_only;
1481 dump_macros = dump_names;
1484 dump_macros = dump_definitions;
1492 if (argv[i][2] == '3')
1497 fprintf (stderr, "GNU CPP version %s", version_string);
1498 #ifdef TARGET_VERSION
1501 fprintf (stderr, "\n");
1506 print_include_names = 1;
1510 if (argv[i][2] != 0)
1511 pend_defs[i] = argv[i] + 2;
1512 else if (i + 1 == argc)
1513 fatal ("Macro name missing after -D option");
1515 i++, pend_defs[i] = argv[i];
1522 if (argv[i][2] != 0)
1524 else if (i + 1 == argc)
1525 fatal ("Assertion missing after -A option");
1529 if (!strcmp (p, "-")) {
1530 /* -A- eliminates all predefined macros and assertions.
1531 Let's include also any that were specified earlier
1532 on the command line. That way we can get rid of any
1533 that were passed automatically in from GCC. */
1535 inhibit_predefs = 1;
1536 for (j = 0; j < i; j++)
1537 pend_defs[j] = pend_assertions[j] = 0;
1539 pend_assertions[i] = p;
1540 pend_assertion_options[i] = "-A";
1545 case 'U': /* JF #undef something */
1546 if (argv[i][2] != 0)
1547 pend_undefs[i] = argv[i] + 2;
1548 else if (i + 1 == argc)
1549 fatal ("Macro name missing after -U option");
1551 pend_undefs[i] = argv[i+1], i++;
1555 put_out_comments = 1;
1558 case 'E': /* -E comes from cc -E; ignore it. */
1562 no_line_commands = 1;
1565 case '$': /* Don't include $ in identifiers. */
1566 dollars_in_ident = 0;
1569 case 'I': /* Add directory to path for includes. */
1571 struct file_name_list *dirtmp;
1573 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1575 /* Don't use any preceding -I directories for #include <...>. */
1576 first_bracket_include = 0;
1579 dirtmp = (struct file_name_list *)
1580 xmalloc (sizeof (struct file_name_list));
1581 dirtmp->next = 0; /* New one goes on the end */
1582 dirtmp->control_macro = 0;
1583 dirtmp->c_system_include_path = 0;
1584 if (argv[i][2] != 0)
1585 dirtmp->fname = argv[i] + 2;
1586 else if (i + 1 == argc)
1587 fatal ("Directory name missing after -I option");
1589 dirtmp->fname = argv[++i];
1590 dirtmp->got_name_map = 0;
1591 append_include_chain (dirtmp, dirtmp);
1597 if (!strcmp (argv[i], "-nostdinc"))
1598 /* -nostdinc causes no default include directories.
1599 You must specify all include-file directories with -I. */
1600 no_standard_includes = 1;
1601 else if (!strcmp (argv[i], "-nostdinc++"))
1602 /* -nostdinc++ causes no default C++-specific include directories. */
1603 no_standard_cplusplus_includes = 1;
1604 else if (!strcmp (argv[i], "-noprecomp"))
1609 /* Sun compiler passes undocumented switch "-undef".
1610 Let's assume it means to inhibit the predefined symbols. */
1611 inhibit_predefs = 1;
1614 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1615 if (in_fname == NULL) {
1618 } else if (out_fname == NULL) {
1621 } /* else fall through into error */
1624 fatal ("Invalid option `%s'", argv[i]);
1629 /* Add dirs from CPATH after dirs from -I. */
1630 /* There seems to be confusion about what CPATH should do,
1631 so for the moment it is not documented. */
1632 /* Some people say that CPATH should replace the standard include dirs,
1633 but that seems pointless: it comes before them, so it overrides them
1636 p = (char *) getenv ("Include");
1638 p = (char *) getenv ("CPATH");
1640 if (p != 0 && ! no_standard_includes)
1643 /* Now that dollars_in_ident is known, initialize is_idchar. */
1644 initialize_char_syntax ();
1646 /* Initialize output buffer */
1648 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1649 outbuf.bufp = outbuf.buf;
1650 outbuf.length = OUTBUF_SIZE;
1652 /* Do partial setup of input buffer for the sake of generating
1653 early #line directives (when -g is in effect). */
1655 fp = &instack[++indepth];
1656 if (in_fname == NULL)
1658 fp->nominal_fname = fp->fname = in_fname;
1661 /* In C++, wchar_t is a distinct basic type, and we can expect
1662 __wchar_t to be defined by cc1plus. */
1664 wchar_type = "__wchar_t";
1666 /* Install __LINE__, etc. Must follow initialize_char_syntax
1667 and option processing. */
1668 initialize_builtins (fp, &outbuf);
1670 /* Do standard #defines and assertions
1671 that identify system and machine type. */
1673 if (!inhibit_predefs) {
1674 char *p = (char *) alloca (strlen (predefs) + 1);
1675 strcpy (p, predefs);
1678 while (*p == ' ' || *p == '\t')
1680 /* Handle -D options. */
1681 if (p[0] == '-' && p[1] == 'D') {
1683 while (*p && *p != ' ' && *p != '\t')
1688 output_line_command (fp, &outbuf, 0, same_file);
1689 make_definition (q, &outbuf);
1690 while (*p == ' ' || *p == '\t')
1692 } else if (p[0] == '-' && p[1] == 'A') {
1693 /* Handle -A options (assertions). */
1702 past_name = assertion;
1703 /* Locate end of name. */
1704 while (*past_name && *past_name != ' '
1705 && *past_name != '\t' && *past_name != '(')
1707 /* Locate `(' at start of value. */
1709 while (*value && (*value == ' ' || *value == '\t'))
1711 if (*value++ != '(')
1713 while (*value && (*value == ' ' || *value == '\t'))
1716 /* Locate end of value. */
1717 while (*past_value && *past_value != ' '
1718 && *past_value != '\t' && *past_value != ')')
1720 termination = past_value;
1721 while (*termination && (*termination == ' ' || *termination == '\t'))
1723 if (*termination++ != ')')
1725 if (*termination && *termination != ' ' && *termination != '\t')
1727 /* Temporarily null-terminate the value. */
1728 save_char = *termination;
1729 *termination = '\0';
1730 /* Install the assertion. */
1731 make_assertion ("-A", assertion);
1732 *termination = (char) save_char;
1734 while (*p == ' ' || *p == '\t')
1742 /* Now handle the command line options. */
1744 /* Do -U's, -D's and -A's in the order they were seen. */
1745 for (i = 1; i < argc; i++) {
1746 if (pend_undefs[i]) {
1748 output_line_command (fp, &outbuf, 0, same_file);
1749 make_undef (pend_undefs[i], &outbuf);
1753 output_line_command (fp, &outbuf, 0, same_file);
1754 make_definition (pend_defs[i], &outbuf);
1756 if (pend_assertions[i])
1757 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1760 done_initializing = 1;
1762 { /* read the appropriate environment variable and if it exists
1763 replace include_defaults with the listed path. */
1765 switch ((objc << 1) + cplusplus)
1768 epath = getenv ("C_INCLUDE_PATH");
1771 epath = getenv ("CPLUS_INCLUDE_PATH");
1774 epath = getenv ("OBJC_INCLUDE_PATH");
1777 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1780 /* If the environment var for this language is set,
1781 add to the default list of include directories. */
1783 char *nstore = (char *) alloca (strlen (epath) + 2);
1785 char *startp, *endp;
1787 for (num_dirs = 1, startp = epath; *startp; startp++)
1788 if (*startp == PATH_SEPARATOR)
1791 = (struct default_include *) xmalloc ((num_dirs
1792 * sizeof (struct default_include))
1793 + sizeof (include_defaults_array));
1794 startp = endp = epath;
1797 /* Handle cases like c:/usr/lib:d:/gcc/lib */
1798 if ((*endp == PATH_SEPARATOR
1799 #if 0 /* Obsolete, now that we use semicolons as the path separator. */
1801 && (endp-startp != 1 || !isalpha (*startp))
1806 strncpy (nstore, startp, endp-startp);
1808 strcpy (nstore, ".");
1810 nstore[endp-startp] = '\0';
1812 include_defaults[num_dirs].fname = savestring (nstore);
1813 include_defaults[num_dirs].cplusplus = cplusplus;
1814 include_defaults[num_dirs].cxx_aware = 1;
1818 endp = startp = endp + 1;
1822 /* Put the usual defaults back in at the end. */
1823 bcopy ((char *) include_defaults_array,
1824 (char *) &include_defaults[num_dirs],
1825 sizeof (include_defaults_array));
1829 append_include_chain (before_system, last_before_system);
1830 first_system_include = before_system;
1832 /* Unless -fnostdinc,
1833 tack on the standard include file dirs to the specified list */
1834 if (!no_standard_includes) {
1835 struct default_include *p = include_defaults;
1836 char *specd_prefix = include_prefix;
1837 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1838 int default_len = 0;
1839 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1840 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1841 default_len = strlen (default_prefix) - 7;
1842 default_prefix[default_len] = 0;
1844 /* Search "translated" versions of GNU directories.
1845 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1846 if (specd_prefix != 0 && default_len != 0)
1847 for (p = include_defaults; p->fname; p++) {
1848 /* Some standard dirs are only for C++. */
1849 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1850 /* Does this dir start with the prefix? */
1851 if (!strncmp (p->fname, default_prefix, default_len)) {
1852 /* Yes; change prefix and add to search list. */
1853 struct file_name_list *new
1854 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1855 int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
1856 char *str = (char *) xmalloc (this_len + 1);
1857 strcpy (str, specd_prefix);
1858 strcat (str, p->fname + default_len);
1860 new->control_macro = 0;
1861 new->c_system_include_path = !p->cxx_aware;
1862 new->got_name_map = 0;
1863 append_include_chain (new, new);
1864 if (first_system_include == 0)
1865 first_system_include = new;
1869 /* Search ordinary names for GNU include directories. */
1870 for (p = include_defaults; p->fname; p++) {
1871 /* Some standard dirs are only for C++. */
1872 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1873 struct file_name_list *new
1874 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1875 new->control_macro = 0;
1876 new->c_system_include_path = !p->cxx_aware;
1877 new->fname = p->fname;
1878 new->got_name_map = 0;
1879 append_include_chain (new, new);
1880 if (first_system_include == 0)
1881 first_system_include = new;
1886 /* Tack the after_include chain at the end of the include chain. */
1887 append_include_chain (after_include, last_after_include);
1888 if (first_system_include == 0)
1889 first_system_include = after_include;
1891 /* With -v, print the list of dirs to search. */
1893 struct file_name_list *p;
1894 fprintf (stderr, "#include \"...\" search starts here:\n");
1895 for (p = include; p; p = p->next) {
1896 if (p == first_bracket_include)
1897 fprintf (stderr, "#include <...> search starts here:\n");
1898 fprintf (stderr, " %s\n", p->fname);
1900 fprintf (stderr, "End of search list.\n");
1903 /* Scan the -imacros files before the main input.
1904 Much like #including them, but with no_output set
1905 so that only their macro definitions matter. */
1907 no_output++; no_record_file++;
1908 for (i = 1; i < argc; i++)
1909 if (pend_files[i]) {
1910 int fd = open (pend_files[i], O_RDONLY, 0666);
1912 perror_with_name (pend_files[i]);
1913 return FAILURE_EXIT_CODE;
1915 finclude (fd, pend_files[i], &outbuf, 0, NULL_PTR);
1917 no_output--; no_record_file--;
1919 /* Copy the entire contents of the main input file into
1920 the stacked input buffer previously allocated for it. */
1922 /* JF check for stdin */
1923 if (in_fname == NULL || *in_fname == 0) {
1926 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
1929 /* -MG doesn't select the form of output and must be specified with one of
1930 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
1931 inhibit compilation. */
1932 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
1933 fatal ("-MG must be specified with one of -M or -MM");
1935 /* Either of two environment variables can specify output of deps.
1936 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1937 where OUTPUT_FILE is the file to write deps info to
1938 and DEPS_TARGET is the target to mention in the deps. */
1941 && (getenv ("SUNPRO_DEPENDENCIES") != 0
1942 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
1943 char *spec = getenv ("DEPENDENCIES_OUTPUT");
1948 spec = getenv ("SUNPRO_DEPENDENCIES");
1955 /* Find the space before the DEPS_TARGET, if there is one. */
1956 /* This should use index. (mrs) */
1957 while (*s != 0 && *s != ' ') s++;
1959 deps_target = s + 1;
1960 output_file = (char *) xmalloc (s - spec + 1);
1961 bcopy (spec, output_file, s - spec);
1962 output_file[s - spec] = 0;
1969 deps_file = output_file;
1973 /* For -M, print the expected object file name
1974 as the target of this Make-rule. */
1976 deps_allocated_size = 200;
1977 deps_buffer = (char *) xmalloc (deps_allocated_size);
1983 deps_output (deps_target, ':');
1984 } else if (*in_fname == 0) {
1985 deps_output ("-", ':');
1990 /* Discard all directory prefixes from filename. */
1991 if ((q = rindex (in_fname, '/')) != NULL
1992 #ifdef DIR_SEPARATOR
1993 && (q = rindex (in_fname, DIR_SEPARATOR)) != NULL
2000 /* Copy remainder to mungable area. */
2001 p = (char *) alloca (strlen(q) + 8);
2004 /* Output P, but remove known suffixes. */
2008 && p[len - 2] == '.'
2009 && index("cCsSm", p[len - 1]))
2012 && p[len - 3] == '.'
2013 && p[len - 2] == 'c'
2014 && p[len - 1] == 'c')
2017 && p[len - 4] == '.'
2018 && p[len - 3] == 'c'
2019 && p[len - 2] == 'x'
2020 && p[len - 1] == 'x')
2023 && p[len - 4] == '.'
2024 && p[len - 3] == 'c'
2025 && p[len - 2] == 'p'
2026 && p[len - 1] == 'p')
2029 /* Supply our own suffix. */
2036 deps_output (p, ':');
2037 deps_output (in_fname, ' ');
2041 file_size_and_mode (f, &st_mode, &st_size);
2042 fp->nominal_fname = fp->fname = in_fname;
2044 fp->system_header_p = 0;
2045 /* JF all this is mine about reading pipes and ttys */
2046 if (! S_ISREG (st_mode)) {
2047 /* Read input from a file that is not a normal disk file.
2048 We cannot preallocate a buffer with the correct size,
2049 so we must read in the file a piece at the time and make it bigger. */
2056 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2058 cnt = safe_read (f, fp->buf + size, bsize - size);
2059 if (cnt < 0) goto perror; /* error! */
2061 if (size != bsize) break; /* End of file */
2063 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2067 /* Read a file whose size we can determine in advance.
2068 For the sake of VMS, st_size is just an upper bound. */
2069 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
2070 fp->length = safe_read (f, fp->buf, st_size);
2071 if (fp->length < 0) goto perror;
2074 fp->if_stack = if_stack;
2076 /* Make sure data ends with a newline. And put a null after it. */
2078 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2079 /* Backslash-newline at end is not good enough. */
2080 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2081 fp->buf[fp->length++] = '\n';
2082 missing_newline = 1;
2084 fp->buf[fp->length] = '\0';
2086 /* Unless inhibited, convert trigraphs in the input. */
2091 /* Now that we know the input file is valid, open the output. */
2093 if (!out_fname || !strcmp (out_fname, ""))
2094 out_fname = "stdout";
2095 else if (! freopen (out_fname, "w", stdout))
2096 pfatal_with_name (out_fname);
2098 output_line_command (fp, &outbuf, 0, same_file);
2100 /* Scan the -include files before the main input. */
2103 for (i = 1; i < argc; i++)
2104 if (pend_includes[i]) {
2105 int fd = open (pend_includes[i], O_RDONLY, 0666);
2107 perror_with_name (pend_includes[i]);
2108 return FAILURE_EXIT_CODE;
2110 finclude (fd, pend_includes[i], &outbuf, 0, NULL_PTR);
2114 /* Scan the input, processing macros and directives. */
2116 rescan (&outbuf, 0);
2118 if (missing_newline)
2121 if (pedantic && missing_newline)
2122 pedwarn ("file does not end in newline");
2124 /* Now we have processed the entire input
2125 Write whichever kind of output has been requested. */
2127 if (dump_macros == dump_only)
2129 else if (! inhibit_output) {
2134 /* Don't actually write the deps file if compilation has failed. */
2136 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2137 pfatal_with_name (deps_file);
2138 fputs (deps_buffer, deps_stream);
2139 putc ('\n', deps_stream);
2141 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2142 fatal ("I/O error on output");
2147 if (pcp_outfile && pcp_outfile != stdout
2148 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2149 fatal ("I/O error on `-pcp' output");
2151 if (ferror (stdout) || fclose (stdout) != 0)
2152 fatal ("I/O error on output");
2155 exit (FAILURE_EXIT_CODE);
2156 exit (SUCCESS_EXIT_CODE);
2159 pfatal_with_name (in_fname);
2163 /* Given a colon-separated list of file names PATH,
2164 add all the names to the search path for include files. */
2178 struct file_name_list *dirtmp;
2180 /* Find the end of this name. */
2181 while (*q != 0 && *q != PATH_SEPARATOR) q++;
2183 /* An empty name in the path stands for the current directory. */
2184 name = (char *) xmalloc (2);
2188 /* Otherwise use the directory that is named. */
2189 name = (char *) xmalloc (q - p + 1);
2190 bcopy (p, name, q - p);
2194 dirtmp = (struct file_name_list *)
2195 xmalloc (sizeof (struct file_name_list));
2196 dirtmp->next = 0; /* New one goes on the end */
2197 dirtmp->control_macro = 0;
2198 dirtmp->c_system_include_path = 0;
2199 dirtmp->fname = name;
2200 dirtmp->got_name_map = 0;
2201 append_include_chain (dirtmp, dirtmp);
2203 /* Advance past this name. */
2207 /* Skip the colon. */
2212 /* Return the address of the first character in S that equals C.
2213 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2214 Return 0 if there is no such character. Assume that C itself is not '\0'.
2215 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2216 but unfortunately memchr isn't autoconfigured yet. */
2225 char *q = index (s, c);
2227 return (U_CHAR *) q;
2239 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2240 before main CCCP processing. Name `pcp' is also in honor of the
2241 drugs the trigraph designers must have been on.
2243 Using an extra pass through the buffer takes a little extra time,
2244 but is infinitely less hairy than trying to handle trigraphs inside
2245 strings, etc. everywhere, and also makes sure that trigraphs are
2246 only translated in the top level of processing. */
2252 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2255 fptr = bptr = sptr = buf->buf;
2256 lptr = fptr + buf->length;
2257 while ((sptr = (U_CHAR *) index0 (sptr, '?', lptr - sptr)) != NULL) {
2294 len = sptr - fptr - 2;
2296 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2297 C, this will be memmove (). */
2298 if (bptr != fptr && len > 0)
2299 bcopy ((char *) fptr, (char *) bptr, len);
2305 len = buf->length - (fptr - buf->buf);
2306 if (bptr != fptr && len > 0)
2307 bcopy ((char *) fptr, (char *) bptr, len);
2308 buf->length -= fptr - bptr;
2309 buf->buf[buf->length] = '\0';
2310 if (warn_trigraphs && fptr != bptr)
2311 warning ("%d trigraph(s) encountered", (fptr - bptr) / 2);
2314 /* Move all backslash-newline pairs out of embarrassing places.
2315 Exchange all such pairs following BP
2316 with any potentially-embarrassing characters that follow them.
2317 Potentially-embarrassing characters are / and *
2318 (because a backslash-newline inside a comment delimiter
2319 would cause it not to be recognized). */
2325 register U_CHAR *p = bp;
2327 /* First count the backslash-newline pairs here. */
2329 while (p[0] == '\\' && p[1] == '\n')
2332 /* What follows the backslash-newlines is not embarrassing. */
2334 if (*p != '/' && *p != '*')
2337 /* Copy all potentially embarrassing characters
2338 that follow the backslash-newline pairs
2339 down to where the pairs originally started. */
2341 while (*p == '*' || *p == '/')
2344 /* Now write the same number of pairs after the embarrassing chars. */
2351 /* Like newline_fix but for use within a directive-name.
2352 Move any backslash-newlines up past any following symbol constituents. */
2355 name_newline_fix (bp)
2358 register U_CHAR *p = bp;
2360 /* First count the backslash-newline pairs here. */
2361 while (p[0] == '\\' && p[1] == '\n')
2364 /* What follows the backslash-newlines is not embarrassing. */
2369 /* Copy all potentially embarrassing characters
2370 that follow the backslash-newline pairs
2371 down to where the pairs originally started. */
2373 while (is_idchar[*p])
2376 /* Now write the same number of pairs after the embarrassing chars. */
2383 /* Look for lint commands in comments.
2385 When we come in here, ibp points into a comment. Limit is as one expects.
2386 scan within the comment -- it should start, after lwsp, with a lint command.
2387 If so that command is returned as a (constant) string.
2389 Upon return, any arg will be pointed to with argstart and will be
2390 arglen long. Note that we don't parse that arg since it will just
2391 be printed out again.
2395 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2396 register U_CHAR *ibp;
2397 register U_CHAR *limit;
2398 U_CHAR **argstart; /* point to command arg */
2399 int *arglen, *cmdlen; /* how long they are */
2402 register U_CHAR *numptr; /* temp for arg parsing */
2406 SKIP_WHITE_SPACE (ibp);
2408 if (ibp >= limit) return NULL;
2410 linsize = limit - ibp;
2412 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2413 if ((linsize >= 10) && !strncmp (ibp, "NOTREACHED", 10)) {
2415 return "NOTREACHED";
2417 if ((linsize >= 8) && !strncmp (ibp, "ARGSUSED", 8)) {
2421 if ((linsize >= 11) && !strncmp (ibp, "LINTLIBRARY", 11)) {
2423 return "LINTLIBRARY";
2425 if ((linsize >= 7) && !strncmp (ibp, "VARARGS", 7)) {
2427 ibp += 7; linsize -= 7;
2428 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2430 /* OK, read a number */
2431 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2433 *arglen = numptr - *argstart;
2440 * The main loop of the program.
2442 * Read characters from the input stack, transferring them to the
2445 * Macros are expanded and push levels on the input stack.
2446 * At the end of such a level it is popped off and we keep reading.
2447 * At the end of any other kind of level, we return.
2448 * #-directives are handled, except within macros.
2450 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2451 * and insert them when appropriate. This is set while scanning macro
2452 * arguments before substitution. It is zero when scanning for final output.
2453 * There are three types of Newline markers:
2454 * * Newline - follows a macro name that was not expanded
2455 * because it appeared inside an expansion of the same macro.
2456 * This marker prevents future expansion of that identifier.
2457 * When the input is rescanned into the final output, these are deleted.
2458 * These are also deleted by ## concatenation.
2459 * * Newline Space (or Newline and any other whitespace character)
2460 * stands for a place that tokens must be separated or whitespace
2461 * is otherwise desirable, but where the ANSI standard specifies there
2462 * is no whitespace. This marker turns into a Space (or whichever other
2463 * whitespace char appears in the marker) in the final output,
2464 * but it turns into nothing in an argument that is stringified with #.
2465 * Such stringified arguments are the only place where the ANSI standard
2466 * specifies with precision that whitespace may not appear.
2468 * During this function, IP->bufp is kept cached in IBP for speed of access.
2469 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2470 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2471 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2472 * explicitly, and before RECACHE, since RECACHE uses OBP.
2476 rescan (op, output_marks)
2480 /* Character being scanned in main loop. */
2483 /* Length of pending accumulated identifier. */
2484 register int ident_length = 0;
2486 /* Hash code of pending accumulated identifier. */
2487 register int hash = 0;
2489 /* Current input level (&instack[indepth]). */
2492 /* Pointer for scanning input. */
2493 register U_CHAR *ibp;
2495 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2496 register U_CHAR *limit;
2498 /* Pointer for storing output. */
2499 register U_CHAR *obp;
2501 /* REDO_CHAR is nonzero if we are processing an identifier
2502 after backing up over the terminating character.
2503 Sometimes we process an identifier without backing up over
2504 the terminating character, if the terminating character
2505 is not special. Backing up is done so that the terminating character
2506 will be dispatched on again once the identifier is dealt with. */
2509 /* 1 if within an identifier inside of which a concatenation
2510 marker (Newline -) has been seen. */
2511 int concatenated = 0;
2513 /* While scanning a comment or a string constant,
2514 this records the line it started on, for error messages. */
2517 /* Record position of last `real' newline. */
2518 U_CHAR *beg_of_line;
2520 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2523 do { ip->macro->type = T_MACRO; \
2524 if (ip->free_ptr) free (ip->free_ptr); \
2525 --indepth; } while (0)
2527 /* Reload `rescan's local variables that describe the current
2528 level of the input stack. */
2531 do { ip = &instack[indepth]; \
2533 limit = ip->buf + ip->length; \
2535 check_expand (op, limit - ibp); \
2537 obp = op->bufp; } while (0)
2539 if (no_output && instack[indepth].fname != 0)
2540 skip_if_group (&instack[indepth], 1, NULL);
2547 /* Our caller must always put a null after the end of
2548 the input at each input stack level. */
2558 if (*ibp == '\n' && !ip->macro) {
2559 /* At the top level, always merge lines ending with backslash-newline,
2560 even in middle of identifier. But do not merge lines in a macro,
2561 since backslash might be followed by a newline-space marker. */
2564 --obp; /* remove backslash from obuf */
2567 /* If ANSI, backslash is just another character outside a string. */
2570 /* Otherwise, backslash suppresses specialness of following char,
2571 so copy it here to prevent the switch from seeing it.
2572 But first get any pending identifier processed. */
2573 if (ident_length > 0)
2580 if (assertions_flag) {
2581 /* Copy #foo (bar lose) without macro expansion. */
2582 SKIP_WHITE_SPACE (ibp);
2583 while (is_idchar[*ibp])
2585 SKIP_WHITE_SPACE (ibp);
2588 skip_paren_group (ip);
2589 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2590 obp += ip->bufp - ibp;
2595 /* If this is expanding a macro definition, don't recognize
2596 preprocessor directives. */
2599 /* If this is expand_into_temp_buffer, recognize them
2600 only after an actual newline at this level,
2601 not at the beginning of the input level. */
2602 if (ip->fname == 0 && beg_of_line == ip->buf)
2608 /* # keyword: a # must be first nonblank char on the line */
2609 if (beg_of_line == 0)
2614 /* Scan from start of line, skipping whitespace, comments
2615 and backslash-newlines, and see if we reach this #.
2616 If not, this # is not special. */
2618 /* If -traditional, require # to be at beginning of line. */
2621 if (is_hor_space[*bp])
2623 else if (*bp == '\\' && bp[1] == '\n')
2625 else if (*bp == '/' && bp[1] == '*') {
2627 while (!(*bp == '*' && bp[1] == '/'))
2631 /* There is no point in trying to deal with C++ // comments here,
2632 because if there is one, then this # must be part of the
2633 comment and we would never reach here. */
2640 /* This # can start a directive. */
2642 --obp; /* Don't copy the '#' */
2646 if (! handle_directive (ip, op)) {
2650 /* Not a known directive: treat it as ordinary text.
2651 IP, OP, IBP, etc. have not been changed. */
2652 if (no_output && instack[indepth].fname) {
2653 /* If not generating expanded output,
2654 what we do with ordinary text is skip it.
2655 Discard everything until next # directive. */
2656 skip_if_group (&instack[indepth], 1, 0);
2661 ++obp; /* Copy the '#' after all */
2662 /* Don't expand an identifier that could be a macro directive.
2663 (Section 3.8.3 of the ANSI C standard) */
2664 SKIP_WHITE_SPACE (ibp);
2665 if (is_idstart[*ibp])
2668 while (is_idchar[*ibp])
2676 /* A # directive has been successfully processed. */
2677 /* If not generating expanded output, ignore everything until
2678 next # directive. */
2679 if (no_output && instack[indepth].fname)
2680 skip_if_group (&instack[indepth], 1, 0);
2686 case '\"': /* skip quoted string */
2688 /* A single quoted string is treated like a double -- some
2689 programs (e.g., troff) are perverse this way */
2694 start_line = ip->lineno;
2696 /* Skip ahead to a matching quote. */
2700 if (ip->macro != 0) {
2701 /* try harder: this string crosses a macro expansion boundary.
2702 This can happen naturally if -traditional.
2703 Otherwise, only -D can make a macro with an unmatched quote. */
2709 error_with_line (line_for_error (start_line),
2710 "unterminated string or character constant");
2711 error_with_line (multiline_string_line,
2712 "possible real start of unterminated constant");
2713 multiline_string_line = 0;
2722 /* Traditionally, end of line ends a string constant with no error.
2723 So exit the loop and record the new line. */
2729 error_with_line (line_for_error (start_line),
2730 "unterminated character constant");
2733 if (pedantic && multiline_string_line == 0) {
2734 pedwarn_with_line (line_for_error (start_line),
2735 "string constant runs past end of line");
2737 if (multiline_string_line == 0)
2738 multiline_string_line = ip->lineno - 1;
2745 /* Backslash newline is replaced by nothing at all,
2746 but keep the line counts correct. */
2751 /* ANSI stupidly requires that in \\ the second \
2752 is *not* prevented from combining with a newline. */
2753 while (*ibp == '\\' && ibp[1] == '\n') {
2772 if (*ibp == '\\' && ibp[1] == '\n')
2776 && !(cplusplus_comments && *ibp == '/'))
2784 /* C++ style comment... */
2785 start_line = ip->lineno;
2787 --ibp; /* Back over the slash */
2790 /* Comments are equivalent to spaces. */
2791 if (! put_out_comments)
2794 /* must fake up a comment here */
2799 U_CHAR *before_bp = ibp+2;
2801 while (ibp < limit) {
2802 if (ibp[-1] != '\\' && *ibp == '\n') {
2803 if (put_out_comments) {
2804 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2805 obp += ibp - before_bp;
2811 /* Copy the newline into the output buffer, in order to
2812 avoid the pain of a #line every time a multiline comment
2814 if (!put_out_comments)
2825 /* Ordinary C comment. Skip it, optionally copying it to output. */
2827 start_line = ip->lineno;
2829 ++ibp; /* Skip the star. */
2831 /* If this cpp is for lint, we peek inside the comments: */
2835 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2837 if (lintcmd != NULL) {
2839 check_expand (op, cmdlen + arglen + 14);
2841 /* I believe it is always safe to emit this newline: */
2843 bcopy ("#pragma lint ", (char *) obp, 13);
2845 bcopy (lintcmd, (char *) obp, cmdlen);
2850 bcopy (argbp, (char *) obp, arglen);
2854 /* OK, now bring us back to the state we were in before we entered
2855 this branch. We need #line because the #pragma's newline always
2856 messes up the line count. */
2858 output_line_command (ip, op, 0, same_file);
2859 check_expand (op, limit - ibp + 2);
2865 /* Comments are equivalent to spaces.
2866 Note that we already output the slash; we might not want it.
2867 For -traditional, a comment is equivalent to nothing. */
2868 if (! put_out_comments) {
2878 U_CHAR *before_bp = ibp;
2880 while (ibp < limit) {
2883 if (warn_comments && ibp < limit && *ibp == '*')
2884 warning ("`/*' within comment");
2887 if (*ibp == '\\' && ibp[1] == '\n')
2889 if (ibp >= limit || *ibp == '/')
2894 /* Copy the newline into the output buffer, in order to
2895 avoid the pain of a #line every time a multiline comment
2897 if (!put_out_comments)
2905 error_with_line (line_for_error (start_line),
2906 "unterminated comment");
2909 if (put_out_comments) {
2910 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2911 obp += ibp - before_bp;
2918 if (!dollars_in_ident)
2922 case '0': case '1': case '2': case '3': case '4':
2923 case '5': case '6': case '7': case '8': case '9':
2924 /* If digit is not part of identifier, it starts a number,
2925 which means that following letters are not an identifier.
2926 "0x5" does not refer to an identifier "x5".
2927 So copy all alphanumerics that follow without accumulating
2928 as an identifier. Periods also, for sake of "3.e7". */
2930 if (ident_length == 0) {
2931 while (ibp < limit) {
2932 while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
2937 if (!is_idchar[c] && c != '.') {
2942 /* A sign can be part of a preprocessing number
2943 if it follows an e. */
2944 if (c == 'e' || c == 'E') {
2945 while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
2949 if (ibp < limit && (*ibp == '+' || *ibp == '-')) {
2951 /* But traditional C does not let the token go past the sign. */
2962 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
2963 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
2964 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
2965 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
2967 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
2968 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
2969 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
2970 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
2974 /* Compute step of hash function, to avoid a proc call on every token */
2975 hash = HASHSTEP (hash, c);
2979 if (ip->fname == 0 && *ibp == '-') {
2980 /* Newline - inhibits expansion of preceding token.
2981 If expanding a macro arg, we keep the newline -.
2982 In final output, it is deleted.
2983 We recognize Newline - in macro bodies and macro args. */
2984 if (! concatenated) {
2989 if (!output_marks) {
2992 /* If expanding a macro arg, keep the newline -. */
2998 /* If reprocessing a macro expansion, newline is a special marker. */
2999 else if (ip->macro != 0) {
3000 /* Newline White is a "funny space" to separate tokens that are
3001 supposed to be separate but without space between.
3002 Here White means any whitespace character.
3003 Newline - marks a recursive macro use that is not
3004 supposed to be expandable. */
3006 if (is_space[*ibp]) {
3007 /* Newline Space does not prevent expansion of preceding token
3008 so expand the preceding token and then come back. */
3009 if (ident_length > 0)
3012 /* If generating final output, newline space makes a space. */
3013 if (!output_marks) {
3015 /* And Newline Newline makes a newline, so count it. */
3016 if (obp[-1] == '\n')
3019 /* If expanding a macro arg, keep the newline space.
3020 If the arg gets stringified, newline space makes nothing. */
3023 } else abort (); /* Newline followed by something random? */
3027 /* If there is a pending identifier, handle it and come back here. */
3028 if (ident_length > 0)
3033 /* Update the line counts and output a #line if necessary. */
3036 if (ip->lineno != op->lineno) {
3038 output_line_command (ip, op, 1, same_file);
3039 check_expand (op, limit - ibp);
3044 /* Come here either after (1) a null character that is part of the input
3045 or (2) at the end of the input, because there is a null there. */
3048 /* Our input really contains a null character. */
3051 /* At end of a macro-expansion level, pop it and read next level. */
3052 if (ip->macro != 0) {
3055 /* If traditional, and we have an identifier that ends here,
3056 process it now, so we get the right error for recursion. */
3057 if (traditional && ident_length
3058 && ! is_idchar[*instack[indepth - 1].bufp]) {
3067 /* If we don't have a pending identifier,
3068 return at end of input. */
3069 if (ident_length == 0) {
3077 /* If we do have a pending identifier, just consider this null
3078 a special character and arrange to dispatch on it again.
3079 The second time, IDENT_LENGTH will be zero so we will return. */
3085 /* Handle the case of a character such as /, ', " or null
3086 seen following an identifier. Back over it so that
3087 after the identifier is processed the special char
3088 will be dispatched on again. */
3098 if (ident_length > 0) {
3099 register HASHNODE *hp;
3101 /* We have just seen an identifier end. If it's a macro, expand it.
3103 IDENT_LENGTH is the length of the identifier
3104 and HASH is its hash code.
3106 The identifier has already been copied to the output,
3107 so if it is a macro we must remove it.
3109 If REDO_CHAR is 0, the char that terminated the identifier
3110 has been skipped in the output and the input.
3111 OBP-IDENT_LENGTH-1 points to the identifier.
3112 If the identifier is a macro, we must back over the terminator.
3114 If REDO_CHAR is 1, the terminating char has already been
3115 backed over. OBP-IDENT_LENGTH points to the identifier. */
3117 if (!pcp_outfile || pcp_inside_if) {
3119 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3122 if (hp->length == ident_length) {
3123 int obufp_before_macroname;
3124 int op_lineno_before_macroname;
3125 register int i = ident_length;
3126 register U_CHAR *p = hp->name;
3127 register U_CHAR *q = obp - i;
3133 do { /* All this to avoid a strncmp () */
3138 /* We found a use of a macro name.
3139 see if the context shows it is a macro call. */
3141 /* Back up over terminating character if not already done. */
3147 /* Save this as a displacement from the beginning of the output
3148 buffer. We can not save this as a position in the output
3149 buffer, because it may get realloc'ed by RECACHE. */
3150 obufp_before_macroname = (obp - op->buf) - ident_length;
3151 op_lineno_before_macroname = op->lineno;
3153 if (hp->type == T_PCSTRING) {
3154 pcstring_used (hp); /* Mark the definition of this key
3155 as needed, ensuring that it
3157 break; /* Exit loop, since the key cannot have a
3158 definition any longer. */
3161 /* Record whether the macro is disabled. */
3162 disabled = hp->type == T_DISABLED;
3164 /* This looks like a macro ref, but if the macro was disabled,
3165 just copy its name and put in a marker if requested. */
3169 /* This error check caught useful cases such as
3170 #define foo(x,y) bar (x (y,0), y)
3173 error ("recursive use of macro `%s'", hp->name);
3177 check_expand (op, limit - ibp + 2);
3184 /* If macro wants an arglist, verify that a '(' follows.
3185 first skip all whitespace, copying it to the output
3186 after the macro name. Then, if there is no '(',
3187 decide this is not a macro call and leave things that way. */
3188 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3189 && hp->value.defn->nargs >= 0)
3191 U_CHAR *old_ibp = ibp;
3192 U_CHAR *old_obp = obp;
3193 int old_iln = ip->lineno;
3194 int old_oln = op->lineno;
3197 /* Scan forward over whitespace, copying it to the output. */
3198 if (ibp == limit && ip->macro != 0) {
3203 old_iln = ip->lineno;
3204 old_oln = op->lineno;
3206 /* A comment: copy it unchanged or discard it. */
3207 else if (*ibp == '/' && ibp+1 != limit && ibp[1] == '*') {
3208 if (put_out_comments) {
3211 } else if (! traditional) {
3215 while (ibp + 1 != limit
3216 && !(ibp[0] == '*' && ibp[1] == '/')) {
3217 /* We need not worry about newline-marks,
3218 since they are never found in comments. */
3220 /* Newline in a file. Count it. */
3224 if (put_out_comments)
3230 if (put_out_comments) {
3235 else if (is_space[*ibp]) {
3237 if (ibp[-1] == '\n') {
3238 if (ip->macro == 0) {
3239 /* Newline in a file. Count it. */
3242 } else if (!output_marks) {
3243 /* A newline mark, and we don't want marks
3244 in the output. If it is newline-hyphen,
3245 discard it entirely. Otherwise, it is
3246 newline-whitechar, so keep the whitechar. */
3256 /* A newline mark; copy both chars to the output. */
3264 /* It isn't a macro call.
3265 Put back the space that we just skipped. */
3268 ip->lineno = old_iln;
3269 op->lineno = old_oln;
3270 /* Exit the for loop. */
3275 /* This is now known to be a macro call.
3276 Discard the macro name from the output,
3277 along with any following whitespace just copied,
3278 but preserve newlines at the top level since this
3279 is more likely to do the right thing with line numbers. */
3280 obp = op->buf + obufp_before_macroname;
3282 op->lineno = op_lineno_before_macroname;
3284 int newlines = op->lineno - op_lineno_before_macroname;
3285 while (0 < newlines--)
3289 /* Prevent accidental token-pasting with a character
3290 before the macro call. */
3291 if (!traditional && obp != op->buf
3292 && (obp[-1] == '-' || obp[1] == '+' || obp[1] == '&'
3293 || obp[-1] == '|' || obp[1] == '<' || obp[1] == '>')) {
3294 /* If we are expanding a macro arg, make a newline marker
3295 to separate the tokens. If we are making real output,
3296 a plain space will do. */
3302 /* Expand the macro, reading arguments as needed,
3303 and push the expansion on the input stack. */
3306 macroexpand (hp, op);
3308 /* Reexamine input stack, since macroexpand has pushed
3309 a new level on it. */
3316 } /* End hash-table-search loop */
3318 ident_length = hash = 0; /* Stop collecting identifier */
3321 } /* End if (ident_length > 0) */
3323 } /* End per-char loop */
3325 /* Come here to return -- but first give an error message
3326 if there was an unterminated successful conditional. */
3328 if (if_stack != ip->if_stack)
3330 char *str = "unknown";
3332 switch (if_stack->type)
3351 error_with_line (line_for_error (if_stack->lineno),
3352 "unterminated `#%s' conditional", str);
3354 if_stack = ip->if_stack;
3358 * Rescan a string into a temporary buffer and return the result
3359 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3361 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3362 * and insert such markers when appropriate. See `rescan' for details.
3363 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3364 * before substitution; it is 0 for other uses.
3367 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3368 U_CHAR *buf, *limit;
3369 int output_marks, assertions;
3371 register FILE_BUF *ip;
3373 int length = limit - buf;
3375 int odepth = indepth;
3376 int save_assertions_flag = assertions_flag;
3378 assertions_flag = assertions;
3383 /* Set up the input on the input stack. */
3385 buf1 = (U_CHAR *) alloca (length + 1);
3387 register U_CHAR *p1 = buf;
3388 register U_CHAR *p2 = buf1;
3395 /* Set up to receive the output. */
3397 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3398 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3403 CHECK_DEPTH ({return obuf;});
3407 ip = &instack[indepth];
3409 ip->nominal_fname = 0;
3410 ip->system_header_p = 0;
3413 ip->length = length;
3414 ip->buf = ip->bufp = buf1;
3415 ip->if_stack = if_stack;
3417 ip->lineno = obuf.lineno = 1;
3419 /* Scan the input, create the output. */
3420 rescan (&obuf, output_marks);
3422 /* Pop input stack to original state. */
3425 if (indepth != odepth)
3428 /* Record the output. */
3429 obuf.length = obuf.bufp - obuf.buf;
3431 assertions_flag = save_assertions_flag;
3436 * Process a # directive. Expects IP->bufp to point after the '#', as in
3437 * `#define foo bar'. Passes to the command handler
3438 * (do_define, do_include, etc.): the addresses of the 1st and
3439 * last chars of the command (starting immediately after the #
3440 * keyword), plus op and the keyword table pointer. If the command
3441 * contains comments it is copied into a temporary buffer sans comments
3442 * and the temporary buffer is passed to the command handler instead.
3443 * Likewise for backslash-newlines.
3445 * Returns nonzero if this was a known # directive.
3446 * Otherwise, returns zero, without advancing the input pointer.
3450 handle_directive (ip, op)
3453 register U_CHAR *bp, *cp;
3454 register struct directive *kt;
3455 register int ident_length;
3458 /* Nonzero means we must copy the entire command
3459 to get rid of comments or backslash-newlines. */
3460 int copy_command = 0;
3462 U_CHAR *ident, *after_ident;
3466 /* Record where the directive started. do_xifdef needs this. */
3467 directive_start = bp - 1;
3469 /* Skip whitespace and \-newline. */
3471 if (is_hor_space[*bp]) {
3472 if ((*bp == '\f' || *bp == '\v') && pedantic)
3473 pedwarn ("%s in preprocessing directive",
3474 *bp == '\f' ? "formfeed" : "vertical tab");
3476 } else if (*bp == '/' && (bp[1] == '*'
3477 || (cplusplus_comments && bp[1] == '/'))) {
3479 skip_to_end_of_comment (ip, &ip->lineno, 0);
3481 } else if (*bp == '\\' && bp[1] == '\n') {
3482 bp += 2; ip->lineno++;
3486 /* Now find end of directive name.
3487 If we encounter a backslash-newline, exchange it with any following
3488 symbol-constituents so that we end up with a contiguous name. */
3495 if (*cp == '\\' && cp[1] == '\n')
3496 name_newline_fix (cp);
3502 ident_length = cp - bp;
3506 /* A line of just `#' becomes blank. */
3508 if (ident_length == 0 && *after_ident == '\n') {
3509 ip->bufp = after_ident;
3513 if (ident_length == 0 || !is_idstart[*ident]) {
3515 while (is_idchar[*p]) {
3516 if (*p < '0' || *p > '9')
3520 /* Handle # followed by a line number. */
3521 if (p != ident && !is_idchar[*p]) {
3522 static struct directive line_directive_table[] = {
3523 { 4, do_line, "line", T_LINE},
3526 pedwarn ("`#' followed by integer");
3527 after_ident = ident;
3528 kt = line_directive_table;
3532 /* Avoid error for `###' and similar cases unless -pedantic. */
3534 while (*p == '#' || is_hor_space[*p]) p++;
3536 if (pedantic && !lang_asm)
3537 warning ("invalid preprocessor directive");
3543 error ("invalid preprocessor directive name");
3549 * Decode the keyword and call the appropriate expansion
3550 * routine, after moving the input pointer up to the next line.
3552 for (kt = directive_table; kt->length > 0; kt++) {
3553 if (kt->length == ident_length && !strncmp (kt->name, ident, ident_length)) {
3554 register U_CHAR *buf;
3555 register U_CHAR *limit;
3558 int *already_output;
3560 /* Nonzero means do not delete comments within the directive.
3561 #define needs this when -traditional. */
3566 limit = ip->buf + ip->length;
3569 keep_comments = traditional && kt->traditional_comments;
3570 /* #import is defined only in Objective C, or when on the NeXT. */
3571 if (kt->type == T_IMPORT && !(objc || lookup ("__NeXT__", -1, -1)))
3574 /* Find the end of this command (first newline not backslashed
3575 and not in a string or comment).
3576 Set COPY_COMMAND if the command must be copied
3577 (it contains a backslash-newline or a comment). */
3579 buf = bp = after_ident;
3580 while (bp < limit) {
3581 register U_CHAR c = *bp++;
3589 } else if (traditional)
3596 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_command, &unterminated);
3597 /* Don't bother calling the directive if we already got an error
3598 message due to unterminated string. Skip everything and pretend
3599 we called the directive. */
3602 /* Traditional preprocessing permits unterminated strings. */
3611 /* <...> is special for #include. */
3613 if (!kt->angle_brackets)
3615 while (bp < limit && *bp != '>' && *bp != '\n') {
3616 if (*bp == '\\' && bp[1] == '\n') {
3626 if (*bp == '\\' && bp[1] == '\n')
3629 || (cplusplus_comments && *bp == '/')) {
3630 U_CHAR *obp = bp - 1;
3632 skip_to_end_of_comment (ip, &ip->lineno, 0);
3634 /* No need to copy the command because of a comment at the end;
3635 just don't include the comment in the directive. */
3636 if (bp == limit || *bp == '\n') {
3640 /* Don't remove the comments if -traditional. */
3641 if (! keep_comments)
3649 pedwarn ("%s in preprocessing directive",
3650 c == '\f' ? "formfeed" : "vertical tab");
3654 --bp; /* Point to the newline */
3662 resume_p = ip->bufp;
3663 /* BP is the end of the directive.
3664 RESUME_P is the next interesting data after the directive.
3665 A comment may come between. */
3667 /* If a directive should be copied through, and -E was given,
3668 pass it through before removing comments. */
3669 if (!no_output && kt->pass_thru && put_out_comments) {
3672 /* Output directive name. */
3673 check_expand (op, kt->length + 2);
3674 /* Make sure # is at the start of a line */
3675 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3680 bcopy (kt->name, op->bufp, kt->length);
3681 op->bufp += kt->length;
3683 /* Output arguments. */
3685 check_expand (op, len);
3686 bcopy (buf, (char *) op->bufp, len);
3688 /* Take account of any (escaped) newlines just output. */
3690 if (buf[len] == '\n')
3693 already_output = &junk;
3694 } /* Don't we need a newline or #line? */
3697 register U_CHAR *xp = buf;
3698 /* Need to copy entire command into temp buffer before dispatching */
3700 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for cmd plus
3704 /* Copy to the new buffer, deleting comments
3705 and backslash-newlines (and whitespace surrounding the latter). */
3708 register U_CHAR c = *xp++;
3713 abort (); /* A bare newline should never part of the line. */
3716 /* <...> is special for #include. */
3718 if (!kt->angle_brackets)
3720 while (xp < bp && c != '>') {
3722 if (c == '\\' && xp < bp && *xp == '\n')
3733 if (cp != buf && is_space[cp[-1]]) {
3734 while (cp != buf && is_space[cp[-1]]) cp--;
3736 SKIP_WHITE_SPACE (xp);
3737 } else if (is_space[*xp]) {
3739 SKIP_WHITE_SPACE (xp);
3749 register U_CHAR *bp1
3750 = skip_quoted_string (xp - 1, bp, ip->lineno,
3751 NULL_PTR, NULL_PTR, NULL_PTR);
3765 || (cplusplus_comments && *xp == '/')) {
3767 /* If we already copied the command through,
3768 already_output != 0 prevents outputting comment now. */
3769 skip_to_end_of_comment (ip, already_output, 0);
3771 while (xp != ip->bufp)
3773 /* Delete or replace the slash. */
3774 else if (traditional)
3783 /* Null-terminate the copy. */
3789 ip->bufp = resume_p;
3791 /* Some directives should be written out for cc1 to process,
3792 just as if they were not defined. And sometimes we're copying
3793 definitions through. */
3795 if (!no_output && already_output == 0
3797 || (kt->type == T_DEFINE
3798 && (dump_macros == dump_names
3799 || dump_macros == dump_definitions)))) {
3802 /* Output directive name. */
3803 check_expand (op, kt->length + 1);
3805 bcopy (kt->name, (char *) op->bufp, kt->length);
3806 op->bufp += kt->length;
3808 if (kt->pass_thru || dump_macros == dump_definitions) {
3809 /* Output arguments. */
3811 check_expand (op, len);
3812 bcopy (buf, (char *) op->bufp, len);
3814 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
3817 SKIP_WHITE_SPACE (xp);
3819 while (is_idchar[*xp]) xp++;
3821 check_expand (op, len + 1);
3823 bcopy (yp, op->bufp, len);
3826 } /* Don't we need a newline or #line? */
3828 /* Call the appropriate command handler. buf now points to
3829 either the appropriate place in the input buffer, or to
3830 the temp buffer if it was necessary to make one. cp
3831 points to the first char after the contents of the (possibly
3832 copied) command, in either case. */
3833 (*kt->func) (buf, cp, op, kt);
3834 check_expand (op, ip->length - (ip->bufp - ip->buf));
3840 /* It is deliberate that we don't warn about undefined directives.
3841 That is the responsibility of cc1. */
3848 static struct tm *timebuf;
3850 time_t t = time ((time_t *)0);
3851 timebuf = localtime (&t);
3856 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3857 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
3861 * expand things like __FILE__. Place the expansion into the output
3862 * buffer *without* rescanning.
3866 special_symbol (hp, op)
3873 FILE_BUF *ip = NULL;
3876 int paren = 0; /* For special `defined' keyword */
3878 if (pcp_outfile && pcp_inside_if
3879 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
3880 error ("Predefined macro `%s' used inside `#if' during precompilation",
3883 for (i = indepth; i >= 0; i--)
3884 if (instack[i].fname != NULL) {
3889 error ("cccp error: not in any file?!");
3890 return; /* the show must go on */
3898 if (hp->type == T_FILE)
3899 string = ip->nominal_fname;
3901 string = instack[0].nominal_fname;
3905 buf = (char *) alloca (3 + 4 * strlen (string));
3906 quote_string (buf, string);
3914 case T_INCLUDE_LEVEL:
3916 for (i = indepth; i >= 0; i--)
3917 if (instack[i].fname != NULL)
3920 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
3921 sprintf (buf, "%d", true_indepth - 1);
3925 buf = (char *) alloca (3 + strlen (version_string));
3926 sprintf (buf, "\"%s\"", version_string);
3929 #ifndef NO_BUILTIN_SIZE_TYPE
3935 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3936 case T_PTRDIFF_TYPE:
3945 case T_USER_LABEL_PREFIX_TYPE:
3946 buf = USER_LABEL_PREFIX;
3949 case T_REGISTER_PREFIX_TYPE:
3950 buf = REGISTER_PREFIX;
3954 buf = (char *) alloca (4 * sizeof (int));
3955 sprintf (buf, "%d", hp->value.ival);
3956 if (pcp_inside_if && pcp_outfile)
3957 /* Output a precondition for this macro use */
3958 fprintf (pcp_outfile, "#define %s %d\n", hp->name, hp->value.ival);
3962 buf = (char *) alloca (10);
3963 sprintf (buf, "%d", ip->lineno);
3968 buf = (char *) alloca (20);
3969 timebuf = timestamp ();
3970 if (hp->type == T_DATE)
3971 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
3972 timebuf->tm_mday, timebuf->tm_year + 1900);
3974 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
3978 case T_SPEC_DEFINED:
3979 buf = " 0 "; /* Assume symbol is not defined */
3980 ip = &instack[indepth];
3981 SKIP_WHITE_SPACE (ip->bufp);
3982 if (*ip->bufp == '(') {
3984 ip->bufp++; /* Skip over the paren */
3985 SKIP_WHITE_SPACE (ip->bufp);
3988 if (!is_idstart[*ip->bufp])
3990 if (hp = lookup (ip->bufp, -1, -1)) {
3991 if (pcp_outfile && pcp_inside_if
3992 && (hp->type == T_CONST
3993 || (hp->type == T_MACRO && hp->value.defn->predefined)))
3994 /* Output a precondition for this macro use. */
3995 fprintf (pcp_outfile, "#define %s\n", hp->name);
3999 if (pcp_outfile && pcp_inside_if) {
4000 /* Output a precondition for this macro use */
4001 U_CHAR *cp = ip->bufp;
4002 fprintf (pcp_outfile, "#undef ");
4003 while (is_idchar[*cp]) /* Ick! */
4004 fputc (*cp++, pcp_outfile);
4005 putc ('\n', pcp_outfile);
4007 while (is_idchar[*ip->bufp])
4009 SKIP_WHITE_SPACE (ip->bufp);
4011 if (*ip->bufp != ')')
4019 error ("`defined' without an identifier");
4023 error ("cccp error: invalid special hash type"); /* time for gdb */
4027 check_expand (op, len);
4028 bcopy (buf, (char *) op->bufp, len);
4035 /* Routines to handle #directives */
4037 /* Handle #include and #import.
4038 This function expects to see "fname" or <fname> on the input. */
4041 do_include (buf, limit, op, keyword)
4042 U_CHAR *buf, *limit;
4044 struct directive *keyword;
4046 int importing = (keyword->type == T_IMPORT);
4047 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4048 static int import_warning = 0;
4049 char *fname; /* Dynamically allocated fname buffer */
4052 U_CHAR *fbeg, *fend; /* Beginning and end of fname */
4054 struct file_name_list *search_start = include; /* Chain of dirs to search */
4055 struct file_name_list dsp[1]; /* First in chain, if #include "..." */
4056 struct file_name_list *searchptr = 0;
4059 int f; /* file number */
4061 int retried = 0; /* Have already tried macro
4062 expanding the include line*/
4063 FILE_BUF trybuf; /* It got expanded into here */
4064 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4069 f= -1; /* JF we iz paranoid! */
4071 if (importing && warn_import && !inhibit_warnings
4072 && !instack[indepth].system_header_p && !import_warning) {
4074 warning ("using `#import' is not recommended");
4075 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4076 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4077 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4078 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4079 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4080 fprintf (stderr, " ... <real contents of file> ...\n");
4081 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4082 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4083 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4084 fprintf (stderr, "when it is equipped with such a conditional.\n");
4090 SKIP_WHITE_SPACE (fbeg);
4091 /* Discard trailing whitespace so we can easily see
4092 if we have parsed all the significant chars we were given. */
4093 while (limit != fbeg && is_hor_space[limit[-1]]) limit--;
4099 /* Copy the operand text, concatenating the strings. */
4102 fbeg = (U_CHAR *) alloca (limit - fbeg + 1);
4104 while (fin != limit) {
4105 while (fin != limit && *fin != '\"')
4110 /* If not at the end, there had better be another string. */
4111 /* Skip just horiz space, and don't go past limit. */
4112 while (fin != limit && is_hor_space[*fin]) fin++;
4113 if (fin != limit && *fin == '\"')
4121 /* We have "filename". Figure out directory this source
4122 file is coming from and put it on the front of the list. */
4124 /* If -I- was specified, don't search current dir, only spec'd ones. */
4125 if (ignore_srcdir) break;
4127 for (fp = &instack[indepth]; fp >= instack; fp--)
4132 if ((nam = fp->nominal_fname) != NULL) {
4133 /* Found a named file. Figure out dir of the file,
4134 and put it in front of the search list. */
4135 dsp[0].next = search_start;
4138 ep = rindex (nam, '/');
4140 ep = rindex (nam, ']');
4141 if (ep == NULL) ep = rindex (nam, '>');
4142 if (ep == NULL) ep = rindex (nam, ':');
4143 if (ep != NULL) ep++;
4147 dsp[0].fname = (char *) alloca (n + 1);
4148 strncpy (dsp[0].fname, nam, n);
4149 dsp[0].fname[n] = '\0';
4150 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4151 max_include_len = n + INCLUDE_LEN_FUDGE;
4153 dsp[0].fname = 0; /* Current directory */
4155 dsp[0].got_name_map = 0;
4164 while (fend != limit && *fend != '>') fend++;
4165 if (*fend == '>' && fend + 1 == limit) {
4167 /* If -I-, start with the first -I dir after the -I-. */
4168 if (first_bracket_include)
4169 search_start = first_bracket_include;
4177 * Support '#include xyz' like VAX-C to allow for easy use of all the
4178 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4179 * code from case '<' is repeated here) and generates a warning.
4181 if (isalpha(*(--fbeg))) {
4183 while (fend != limit && (!isspace(*fend))) fend++;
4184 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4185 if (fend == limit) {
4187 /* If -I-, start with the first -I dir after the -I-. */
4188 if (first_bracket_include)
4189 search_start = first_bracket_include;
4197 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4200 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
4201 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4202 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
4203 limit = buf + (trybuf.bufp - trybuf.buf);
4210 /* For #include_next, skip in the search path
4211 past the dir in which the containing file was found. */
4214 for (fp = &instack[indepth]; fp >= instack; fp--)
4215 if (fp->fname != NULL) {
4216 /* fp->dir is null if the containing file was specified
4217 with an absolute file name. In that case, don't skip anything. */
4219 search_start = fp->dir->next;
4228 error ("empty file name in `#%s'", keyword->name);
4232 /* Allocate this permanently, because it gets stored in the definitions
4234 fname = (char *) xmalloc (max_include_len + flen + 4);
4235 /* + 2 above for slash and terminating null. */
4236 /* + 2 added for '.h' on VMS (to support '#include filename') */
4238 /* If specified file name is absolute, just open it. */
4241 strncpy (fname, fbeg, flen);
4243 if (redundant_include_p (fname))
4246 f = lookup_import (fname, NULL_PTR);
4248 f = open_include_file (fname, NULL_PTR);
4250 return 0; /* Already included this file */
4252 /* Search directory path, trying to open the file.
4253 Copy each filename tried into FNAME. */
4255 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4256 if (searchptr->fname) {
4257 /* The empty string in a search path is ignored.
4258 This makes it possible to turn off entirely
4259 a standard piece of the list. */
4260 if (searchptr->fname[0] == 0)
4262 strcpy (fname, searchptr->fname);
4263 strcat (fname, "/");
4264 fname[strlen (fname) + flen] = 0;
4268 strncat (fname, fbeg, flen);
4270 /* Change this 1/2 Unix 1/2 VMS file specification into a
4271 full VMS file specification */
4272 if (searchptr->fname && (searchptr->fname[0] != 0)) {
4273 /* Fix up the filename */
4274 hack_vms_include_specification (fname);
4276 /* This is a normal VMS filespec, so use it unchanged. */
4277 strncpy (fname, fbeg, flen);
4279 /* if it's '#include filename', add the missing .h */
4280 if (index(fname,'.')==NULL) {
4281 strcat (fname, ".h");
4286 f = lookup_import (fname, searchptr);
4288 f = open_include_file (fname, searchptr);
4290 return 0; /* Already included this file */
4292 else if (f == -1 && errno == EACCES)
4293 warning ("Header file %s exists, but is not readable", fname);
4295 if (redundant_include_p (fname)) {
4305 /* A file that was not found. */
4307 strncpy (fname, fbeg, flen);
4309 /* If generating dependencies and -MG was specified, we assume missing
4310 files are leaf files, living in the same directory as the source file
4311 or other similar place; these missing files may be generated from
4312 other files and may not exist yet (eg: y.tab.h). */
4313 if (print_deps_missing_files
4314 && print_deps > (angle_brackets || (system_include_depth > 0)))
4316 /* If it was requested as a system header file,
4317 then assume it belongs in the first place to look for such. */
4320 for (searchptr = search_start; searchptr; searchptr = searchptr->next)
4322 if (searchptr->fname)
4326 if (searchptr->fname[0] == 0)
4328 p = xmalloc (strlen (searchptr->fname)
4329 + strlen (fname) + 2);
4330 strcpy (p, searchptr->fname);
4333 deps_output (p, ' ');
4340 /* Otherwise, omit the directory, as if the file existed
4341 in the directory with the source. */
4342 deps_output (fname, ' ');
4345 /* If -M was specified, and this header file won't be added to the
4346 dependency list, then don't count this as an error, because we can
4347 still produce correct output. Otherwise, we can't produce correct
4348 output, because there may be dependencies we need inside the missing
4349 file, and we don't know what directory this missing file exists in. */
4351 && (print_deps <= (angle_brackets || (system_include_depth > 0))))
4352 warning ("No include path in which to find %s", fname);
4353 else if (search_start)
4354 error_from_errno (fname);
4356 error ("No include path in which to find %s", fname);
4360 /* Check to see if this include file is a once-only include file.
4363 struct file_name_list* ptr;
4365 for (ptr = dont_repeat_files; ptr; ptr = ptr->next) {
4366 if (!strcmp (ptr->fname, fname)) {
4368 return 0; /* This file was once'd. */
4372 for (ptr = all_include_files; ptr; ptr = ptr->next) {
4373 if (!strcmp (ptr->fname, fname))
4374 break; /* This file was included before. */
4378 /* This is the first time for this file. */
4379 /* Add it to list of files included. */
4381 ptr = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
4382 ptr->control_macro = 0;
4383 ptr->c_system_include_path = 0;
4384 ptr->next = all_include_files;
4385 all_include_files = ptr;
4386 ptr->fname = savestring (fname);
4387 ptr->got_name_map = 0;
4389 /* For -M, add this file to the dependencies. */
4390 if (print_deps > (angle_brackets || (system_include_depth > 0)))
4391 deps_output (fname, ' ');
4394 /* Handle -H option. */
4395 if (print_include_names) {
4396 output_dots (stderr, indepth);
4397 fprintf (stderr, "%s\n", fname);
4401 system_include_depth++;
4403 /* Actually process the file. */
4404 add_import (f, fname); /* Record file on "seen" list for #import. */
4406 pcftry = (char *) alloca (strlen (fname) + 30);
4414 sprintf (pcftry, "%s%d", fname, pcfnum++);
4416 pcf = open (pcftry, O_RDONLY, 0666);
4422 if (bcmp ((char *) &stat_f.st_ino, (char *) &s.st_ino,
4424 || stat_f.st_dev != s.st_dev)
4426 pcfbuf = check_precompiled (pcf, fname, &pcfbuflimit);
4427 /* Don't need it any more. */
4432 /* Don't need it at all. */
4437 } while (pcf != -1 && !pcfbuf);
4439 /* Actually process the file */
4441 pcfname = xmalloc (strlen (pcftry) + 1);
4442 strcpy (pcfname, pcftry);
4443 pcfinclude (pcfbuf, pcfbuflimit, fname, op);
4446 finclude (f, fname, op, is_system_include (fname), searchptr);
4449 system_include_depth--;
4454 /* Return nonzero if there is no need to include file NAME
4455 because it has already been included and it contains a conditional
4456 to make a repeated include do nothing. */
4459 redundant_include_p (name)
4462 struct file_name_list *l = all_include_files;
4463 for (; l; l = l->next)
4464 if (! strcmp (name, l->fname)
4466 && lookup (l->control_macro, -1, -1))
4471 /* Return nonzero if the given FILENAME is an absolute pathname which
4472 designates a file within one of the known "system" include file
4473 directories. We assume here that if the given FILENAME looks like
4474 it is the name of a file which resides either directly in a "system"
4475 include file directory, or within any subdirectory thereof, then the
4476 given file must be a "system" include file. This function tells us
4477 if we should suppress pedantic errors/warnings for the given FILENAME.
4479 The value is 2 if the file is a C-language system header file
4480 for which C++ should (on most systems) assume `extern "C"'. */
4483 is_system_include (filename)
4484 register char *filename;
4486 struct file_name_list *searchptr;
4488 for (searchptr = first_system_include; searchptr;
4489 searchptr = searchptr->next)
4490 if (searchptr->fname) {
4491 register char *sys_dir = searchptr->fname;
4492 register unsigned length = strlen (sys_dir);
4494 if (! strncmp (sys_dir, filename, length) && filename[length] == '/')
4496 if (searchptr->c_system_include_path)
4505 /* The file_name_map structure holds a mapping of file names for a
4506 particular directory. This mapping is read from the file named
4507 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4508 map filenames on a file system with severe filename restrictions,
4509 such as DOS. The format of the file name map file is just a series
4510 of lines with two tokens on each line. The first token is the name
4511 to map, and the second token is the actual name to use. */
4513 struct file_name_map
4515 struct file_name_map *map_next;
4520 #define FILE_NAME_MAP_FILE "header.gcc"
4522 /* Read a space delimited string of unlimited length from a stdio
4526 read_filename_string (ch, f)
4534 set = alloc = xmalloc (len + 1);
4538 while ((ch = getc (f)) != EOF && ! is_space[ch])
4540 if (set - alloc == len)
4543 alloc = xrealloc (alloc, len + 1);
4544 set = alloc + len / 2;
4554 /* Read the file name map file for DIRNAME. */
4556 static struct file_name_map *
4557 read_name_map (dirname)
4560 /* This structure holds a linked list of file name maps, one per
4562 struct file_name_map_list
4564 struct file_name_map_list *map_list_next;
4565 char *map_list_name;
4566 struct file_name_map *map_list_map;
4568 static struct file_name_map_list *map_list;
4569 register struct file_name_map_list *map_list_ptr;
4573 for (map_list_ptr = map_list; map_list_ptr;
4574 map_list_ptr = map_list_ptr->map_list_next)
4575 if (! strcmp (map_list_ptr->map_list_name, dirname))
4576 return map_list_ptr->map_list_map;
4578 map_list_ptr = ((struct file_name_map_list *)
4579 xmalloc (sizeof (struct file_name_map_list)));
4580 map_list_ptr->map_list_name = savestring (dirname);
4581 map_list_ptr->map_list_map = NULL;
4583 name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
4584 strcpy (name, dirname);
4587 strcat (name, FILE_NAME_MAP_FILE);
4588 f = fopen (name, "r");
4590 map_list_ptr->map_list_map = NULL;
4594 int dirlen = strlen (dirname);
4596 while ((ch = getc (f)) != EOF)
4599 struct file_name_map *ptr;
4603 from = read_filename_string (ch, f);
4604 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4606 to = read_filename_string (ch, f);
4608 ptr = ((struct file_name_map *)
4609 xmalloc (sizeof (struct file_name_map)));
4610 ptr->map_from = from;
4612 /* Make the real filename absolute. */
4617 ptr->map_to = xmalloc (dirlen + strlen (to) + 2);
4618 strcpy (ptr->map_to, dirname);
4619 ptr->map_to[dirlen] = '/';
4620 strcpy (ptr->map_to + dirlen + 1, to);
4624 ptr->map_next = map_list_ptr->map_list_map;
4625 map_list_ptr->map_list_map = ptr;
4627 while ((ch = getc (f)) != '\n')
4634 map_list_ptr->map_list_next = map_list;
4635 map_list = map_list_ptr;
4637 return map_list_ptr->map_list_map;
4640 /* Try to open include file FILENAME. SEARCHPTR is the directory
4641 being tried from the include file search path. This function maps
4642 filenames on file systems based on information read by
4646 open_include_file (filename, searchptr)
4648 struct file_name_list *searchptr;
4650 register struct file_name_map *map;
4651 register char *from;
4654 if (searchptr && ! searchptr->got_name_map)
4656 searchptr->name_map = read_name_map (searchptr->fname
4657 ? searchptr->fname : ".");
4658 searchptr->got_name_map = 1;
4661 /* First check the mapping for the directory we are using. */
4662 if (searchptr && searchptr->name_map)
4665 if (searchptr->fname)
4666 from += strlen (searchptr->fname) + 1;
4667 for (map = searchptr->name_map; map; map = map->map_next)
4669 if (! strcmp (map->map_from, from))
4671 /* Found a match. */
4672 return open (map->map_to, O_RDONLY, 0666);
4677 /* Try to find a mapping file for the particular directory we are
4678 looking in. Thus #include <sys/types.h> will look up sys/types.h
4679 in /usr/include/header.gcc and look up types.h in
4680 /usr/include/sys/header.gcc. */
4681 p = rindex (filename, '/');
4686 && strlen (searchptr->fname) == p - filename
4687 && ! strncmp (searchptr->fname, filename, p - filename))
4689 /* FILENAME is in SEARCHPTR, which we've already checked. */
4690 return open (filename, O_RDONLY, 0666);
4700 dir = (char *) alloca (p - filename + 1);
4701 bcopy (filename, dir, p - filename);
4702 dir[p - filename] = '\0';
4705 for (map = read_name_map (dir); map; map = map->map_next)
4706 if (! strcmp (map->map_from, from))
4707 return open (map->map_to, O_RDONLY, 0666);
4709 return open (filename, O_RDONLY, 0666);
4712 /* Process the contents of include file FNAME, already open on descriptor F,
4714 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4715 "system" include directories (as decided by the `is_system_include'
4717 DIRPTR is the link in the dir path through which this file was found,
4718 or 0 if the file name was absolute. */
4721 finclude (f, fname, op, system_header_p, dirptr)
4725 int system_header_p;
4726 struct file_name_list *dirptr;
4731 FILE_BUF *fp; /* For input stack frame */
4732 int missing_newline = 0;
4734 CHECK_DEPTH (return;);
4736 if (file_size_and_mode (f, &st_mode, &st_size) < 0)
4738 perror_with_name (fname);
4743 fp = &instack[indepth + 1];
4744 bzero ((char *) fp, sizeof (FILE_BUF));
4745 fp->nominal_fname = fp->fname = fname;
4748 fp->if_stack = if_stack;
4749 fp->system_header_p = system_header_p;
4752 if (S_ISREG (st_mode)) {
4753 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
4756 /* Read the file contents, knowing that st_size is an upper bound
4757 on the number of bytes we can read. */
4758 fp->length = safe_read (f, fp->buf, st_size);
4759 if (fp->length < 0) goto nope;
4761 else if (S_ISDIR (st_mode)) {
4762 error ("directory `%s' specified in #include", fname);
4766 /* Cannot count its file size before reading.
4767 First read the entire file into heap and
4768 copy them into buffer on stack. */
4773 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
4776 i = safe_read (f, fp->buf + st_size, bsize - st_size);
4778 goto nope; /* error! */
4780 if (st_size != bsize)
4781 break; /* End of file */
4783 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
4786 fp->length = st_size;
4789 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
4790 /* Backslash-newline at end is not good enough. */
4791 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
4792 fp->buf[fp->length++] = '\n';
4793 missing_newline = 1;
4795 fp->buf[fp->length] = '\0';
4797 /* Close descriptor now, so nesting does not use lots of descriptors. */
4800 /* Must do this before calling trigraph_pcp, so that the correct file name
4801 will be printed in warning messages. */
4804 input_file_stack_tick++;
4809 output_line_command (fp, op, 0, enter_file);
4812 if (missing_newline)
4815 if (pedantic && missing_newline)
4816 pedwarn ("file does not end in newline");
4819 input_file_stack_tick++;
4820 output_line_command (&instack[indepth], op, 0, leave_file);
4826 perror_with_name (fname);
4831 /* Record that inclusion of the file named FILE
4832 should be controlled by the macro named MACRO_NAME.
4833 This means that trying to include the file again
4834 will do something if that macro is defined. */
4837 record_control_macro (file, macro_name)
4841 struct file_name_list *new;
4843 for (new = all_include_files; new; new = new->next) {
4844 if (!strcmp (new->fname, file)) {
4845 new->control_macro = macro_name;
4850 /* If the file is not in all_include_files, something's wrong. */
4854 /* Maintain and search list of included files, for #import. */
4856 #define IMPORT_HASH_SIZE 31
4858 struct import_file {
4862 struct import_file *next;
4865 /* Hash table of files already included with #include or #import. */
4867 static struct import_file *import_hash_table[IMPORT_HASH_SIZE];
4869 /* Hash a file name for import_hash_table. */
4877 while (*f) val += *f++;
4878 return (val%IMPORT_HASH_SIZE);
4881 /* Search for file FILENAME in import_hash_table.
4882 Return -2 if found, either a matching name or a matching inode.
4883 Otherwise, open the file and return a file descriptor if successful
4884 or -1 if unsuccessful. */
4887 lookup_import (filename, searchptr)
4889 struct file_name_list *searchptr;
4891 struct import_file *i;
4897 hashval = import_hash (filename);
4899 /* Attempt to find file in list of already included files */
4900 i = import_hash_table[hashval];
4903 if (!strcmp (filename, i->name))
4904 return -2; /* return found */
4907 /* Open it and try a match on inode/dev */
4908 fd = open_include_file (filename, searchptr);
4912 for (h = 0; h < IMPORT_HASH_SIZE; h++) {
4913 i = import_hash_table[h];
4915 /* Compare the inode and the device.
4916 Supposedly on some systems the inode is not a scalar. */
4917 if (!bcmp ((char *) &i->inode, (char *) &sb.st_ino, sizeof (sb.st_ino))
4918 && i->dev == sb.st_dev) {
4920 return -2; /* return found */
4925 return fd; /* Not found, return open file */
4928 /* Add the file FNAME, open on descriptor FD, to import_hash_table. */
4931 add_import (fd, fname)
4935 struct import_file *i;
4939 hashval = import_hash (fname);
4941 i = (struct import_file *)xmalloc (sizeof (struct import_file));
4942 i->name = (char *)xmalloc (strlen (fname)+1);
4943 strcpy (i->name, fname);
4944 bcopy ((char *) &sb.st_ino, (char *) &i->inode, sizeof (sb.st_ino));
4946 i->next = import_hash_table[hashval];
4947 import_hash_table[hashval] = i;
4950 /* Load the specified precompiled header into core, and verify its
4951 preconditions. PCF indicates the file descriptor to read, which must
4952 be a regular file. FNAME indicates the file name of the original
4953 header. *LIMIT will be set to an address one past the end of the file.
4954 If the preconditions of the file are not satisfied, the buffer is
4955 freed and we return 0. If the preconditions are satisfied, return
4956 the address of the buffer following the preconditions. The buffer, in
4957 this case, should never be freed because various pieces of it will
4958 be referred to until all precompiled strings are output at the end of
4962 check_precompiled (pcf, fname, limit)
4976 if (file_size_and_mode (pcf, &st_mode, &st_size) < 0)
4979 if (S_ISREG (st_mode))
4981 buf = xmalloc (st_size + 2);
4982 length = safe_read (pcf, buf, st_size);
4989 if (length > 0 && buf[length-1] != '\n')
4990 buf[length++] = '\n';
4993 *limit = buf + length;
4995 /* File is in core. Check the preconditions. */
4996 if (!check_preconditions (buf))
4998 for (cp = buf; *cp; cp++)
5001 fprintf (stderr, "Using preinclude %s\n", fname);
5007 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5013 /* PREC (null terminated) points to the preconditions of a
5014 precompiled header. These are a series of #define and #undef
5015 lines which must match the current contents of the hash
5018 check_preconditions (prec)
5025 lineend = (char *) index (prec, '\n');
5027 if (*prec++ != '#') {
5028 error ("Bad format encountered while reading precompiled file");
5031 if (!strncmp (prec, "define", 6)) {
5035 mdef = create_definition (prec, lineend, NULL_PTR);
5040 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5041 || (hp->type != T_MACRO && hp->type != T_CONST)
5042 || (hp->type == T_MACRO
5043 && !compare_defs (mdef.defn, hp->value.defn)
5044 && (mdef.defn->length != 2
5045 || mdef.defn->expansion[0] != '\n'
5046 || mdef.defn->expansion[1] != ' ')))
5048 } else if (!strncmp (prec, "undef", 5)) {
5053 while (is_hor_space[(U_CHAR) *prec])
5056 while (is_idchar[(U_CHAR) *prec])
5060 if (lookup (name, len, -1))
5063 error ("Bad format encountered while reading precompiled file");
5068 /* They all passed successfully */
5072 /* Process the main body of a precompiled file. BUF points to the
5073 string section of the file, following the preconditions. LIMIT is one
5074 character past the end. NAME is the name of the file being read
5075 in. OP is the main output buffer */
5077 pcfinclude (buf, limit, name, op)
5078 U_CHAR *buf, *limit, *name;
5085 /* First in the file comes 4 bytes indicating the number of strings, */
5086 /* in network byte order. (MSB first). */
5088 nstrings = (nstrings << 8) | *cp++;
5089 nstrings = (nstrings << 8) | *cp++;
5090 nstrings = (nstrings << 8) | *cp++;
5092 /* Looping over each string... */
5093 while (nstrings--) {
5094 U_CHAR *string_start;
5095 U_CHAR *endofthiskey;
5099 /* Each string starts with a STRINGDEF structure (str), followed */
5100 /* by the text of the string (string_start) */
5102 /* First skip to a longword boundary */
5103 /* ??? Why a 4-byte boundary? On all machines? */
5104 /* NOTE: This works correctly even if HOST_WIDE_INT
5105 is narrower than a pointer.
5106 Do not try risky measures here to get another type to use!
5107 Do not include stddef.h--it will fail! */
5108 if ((HOST_WIDE_INT) cp & 3)
5109 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5111 /* Now get the string. */
5112 str = (STRINGDEF *) cp;
5113 string_start = cp += sizeof (STRINGDEF);
5115 for (; *cp; cp++) /* skip the string */
5118 /* We need to macro expand the string here to ensure that the
5119 proper definition environment is in place. If it were only
5120 expanded when we find out it is needed, macros necessary for
5121 its proper expansion might have had their definitions changed. */
5122 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5123 /* Lineno is already set in the precompiled file */
5124 str->contents = tmpbuf.buf;
5125 str->len = tmpbuf.length;
5127 str->filename = name;
5128 str->output_mark = outbuf.bufp - outbuf.buf;
5131 *stringlist_tailp = str;
5132 stringlist_tailp = &str->chain;
5134 /* Next comes a fourbyte number indicating the number of keys */
5135 /* for this string. */
5137 nkeys = (nkeys << 8) | *cp++;
5138 nkeys = (nkeys << 8) | *cp++;
5139 nkeys = (nkeys << 8) | *cp++;
5141 /* If this number is -1, then the string is mandatory. */
5145 /* Otherwise, for each key, */
5146 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5147 KEYDEF *kp = (KEYDEF *) cp;
5150 /* It starts with a KEYDEF structure */
5151 cp += sizeof (KEYDEF);
5153 /* Find the end of the key. At the end of this for loop we
5154 advance CP to the start of the next key using this variable. */
5155 endofthiskey = cp + strlen (cp);
5158 /* Expand the key, and enter it into the hash table. */
5159 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5160 tmpbuf.bufp = tmpbuf.buf;
5162 while (is_hor_space[*tmpbuf.bufp])
5164 if (!is_idstart[*tmpbuf.bufp]
5165 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5170 hp = lookup (tmpbuf.bufp, -1, -1);
5173 install (tmpbuf.bufp, -1, T_PCSTRING, 0, (char *) kp, -1);
5175 else if (hp->type == T_PCSTRING) {
5176 kp->chain = hp->value.keydef;
5177 hp->value.keydef = kp;
5183 /* This output_line_command serves to switch us back to the current
5184 input file in case some of these strings get output (which will
5185 result in line commands for the header file being output). */
5186 output_line_command (&instack[indepth], op, 0, enter_file);
5189 /* Called from rescan when it hits a key for strings. Mark them all */
5190 /* used and clean up. */
5197 for (kp = hp->value.keydef; kp; kp = kp->chain)
5198 kp->str->writeflag = 1;
5202 /* Write the output, interspersing precompiled strings in their */
5203 /* appropriate places. */
5207 STRINGDEF *next_string;
5208 U_CHAR *cur_buf_loc;
5209 int line_command_len = 80;
5210 char *line_command = xmalloc (line_command_len);
5213 /* In each run through the loop, either cur_buf_loc == */
5214 /* next_string_loc, in which case we print a series of strings, or */
5215 /* it is less than next_string_loc, in which case we write some of */
5217 cur_buf_loc = outbuf.buf;
5218 next_string = stringlist;
5220 while (cur_buf_loc < outbuf.bufp || next_string) {
5222 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5223 if (next_string->writeflag) {
5224 len = 4 * strlen (next_string->filename) + 32;
5225 while (len > line_command_len)
5226 line_command = xrealloc (line_command,
5227 line_command_len *= 2);
5228 sprintf (line_command, "\n# %d ", next_string->lineno);
5229 strcpy (quote_string (line_command + strlen (line_command),
5230 next_string->filename),
5232 safe_write (fileno (stdout), line_command, strlen (line_command));
5233 safe_write (fileno (stdout), next_string->contents, next_string->len);
5235 next_string = next_string->chain;
5239 ? (next_string->output_mark
5240 - (cur_buf_loc - outbuf.buf))
5241 : outbuf.bufp - cur_buf_loc);
5243 safe_write (fileno (stdout), cur_buf_loc, len);
5247 free (line_command);
5250 /* Pass a directive through to the output file.
5251 BUF points to the contents of the directive, as a contiguous string.
5252 LIMIT points to the first character past the end of the directive.
5253 KEYWORD is the keyword-table entry for the directive. */
5256 pass_thru_directive (buf, limit, op, keyword)
5257 U_CHAR *buf, *limit;
5259 struct directive *keyword;
5261 register unsigned keyword_length = keyword->length;
5263 check_expand (op, 1 + keyword_length + (limit - buf));
5265 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5266 op->bufp += keyword_length;
5267 if (limit != buf && buf[0] != ' ')
5269 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5270 op->bufp += (limit - buf);
5273 /* Count the line we have just made in the output,
5274 to get in sync properly. */
5279 /* The arglist structure is built by do_define to tell
5280 collect_definition where the argument names begin. That
5281 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5282 would contain pointers to the strings x, y, and z.
5283 Collect_definition would then build a DEFINITION node,
5284 with reflist nodes pointing to the places x, y, and z had
5285 appeared. So the arglist is just convenience data passed
5286 between these two routines. It is not kept around after
5287 the current #define has been processed and entered into the
5291 struct arglist *next;
5298 /* Create a DEFINITION node from a #define directive. Arguments are
5299 as for do_define. */
5301 create_definition (buf, limit, op)
5302 U_CHAR *buf, *limit;
5305 U_CHAR *bp; /* temp ptr into input buffer */
5306 U_CHAR *symname; /* remember where symbol name starts */
5307 int sym_length; /* and how long it is */
5308 int line = instack[indepth].lineno;
5309 char *file = instack[indepth].nominal_fname;
5313 int arglengths = 0; /* Accumulate lengths of arg names
5314 plus number of args. */
5319 while (is_hor_space[*bp])
5322 symname = bp; /* remember where it starts */
5323 sym_length = check_macro_name (bp, "macro");
5326 /* Lossage will occur if identifiers or control keywords are broken
5327 across lines using backslash. This is not the right place to take
5331 struct arglist *arg_ptrs = NULL;
5334 bp++; /* skip '(' */
5335 SKIP_WHITE_SPACE (bp);
5337 /* Loop over macro argument names. */
5338 while (*bp != ')') {
5339 struct arglist *temp;
5341 temp = (struct arglist *) alloca (sizeof (struct arglist));
5343 temp->next = arg_ptrs;
5344 temp->argno = argno++;
5345 temp->rest_args = 0;
5349 pedwarn ("another parameter follows `%s'",
5352 if (!is_idstart[*bp])
5353 pedwarn ("invalid character in macro parameter name");
5355 /* Find the end of the arg name. */
5356 while (is_idchar[*bp]) {
5358 /* do we have a "special" rest-args extension here? */
5359 if (limit - bp > REST_EXTENSION_LENGTH &&
5360 strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5362 temp->rest_args = 1;
5366 temp->length = bp - temp->name;
5368 bp += REST_EXTENSION_LENGTH;
5369 arglengths += temp->length + 2;
5370 SKIP_WHITE_SPACE (bp);
5371 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5372 error ("badly punctuated parameter list in `#define'");
5377 SKIP_WHITE_SPACE (bp);
5380 error ("unterminated parameter list in `#define'");
5384 struct arglist *otemp;
5386 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5387 if (temp->length == otemp->length &&
5388 strncmp (temp->name, otemp->name, temp->length) == 0) {
5391 name = (U_CHAR *) alloca (temp->length + 1);
5392 (void) strncpy (name, temp->name, temp->length);
5393 name[temp->length] = '\0';
5394 error ("duplicate argument name `%s' in `#define'", name);
5400 ++bp; /* skip paren */
5401 /* Skip spaces and tabs if any. */
5402 while (bp < limit && (*bp == ' ' || *bp == '\t'))
5404 /* now everything from bp before limit is the definition. */
5405 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5406 defn->rest_args = rest_args;
5408 /* Now set defn->args.argnames to the result of concatenating
5409 the argument names in reverse order
5410 with comma-space between them. */
5411 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5413 struct arglist *temp;
5415 for (temp = arg_ptrs; temp; temp = temp->next) {
5416 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5418 if (temp->next != 0) {
5419 defn->args.argnames[i++] = ',';
5420 defn->args.argnames[i++] = ' ';
5423 defn->args.argnames[i] = 0;
5426 /* Simple expansion or empty definition. */
5432 case '\t': case ' ':
5433 /* Skip spaces and tabs. */
5434 while (++bp < limit && (*bp == ' ' || *bp == '\t'))
5438 case '!': case '"': case '#': case '%': case '&': case '\'':
5439 case ')': case '*': case '+': case ',': case '-': case '.':
5440 case '/': case ':': case ';': case '<': case '=': case '>':
5441 case '?': case '[': case '\\': case ']': case '^': case '{':
5442 case '|': case '}': case '~':
5443 warning ("missing white space after `#define %.*s'",
5444 sym_length, symname);
5448 pedwarn ("missing white space after `#define %.*s'",
5449 sym_length, symname);
5453 /* Now everything from bp before limit is the definition. */
5454 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5455 defn->args.argnames = (U_CHAR *) "";
5461 /* OP is null if this is a predefinition */
5462 defn->predefined = !op;
5464 mdef.symnam = symname;
5465 mdef.symlen = sym_length;
5474 /* Process a #define command.
5475 BUF points to the contents of the #define command, as a contiguous string.
5476 LIMIT points to the first character past the end of the definition.
5477 KEYWORD is the keyword-table entry for #define. */
5480 do_define (buf, limit, op, keyword)
5481 U_CHAR *buf, *limit;
5483 struct directive *keyword;
5488 /* If this is a precompiler run (with -pcp) pass thru #define commands. */
5489 if (pcp_outfile && op)
5490 pass_thru_directive (buf, limit, op, keyword);
5492 mdef = create_definition (buf, limit, op);
5496 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5500 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5502 /* Redefining a precompiled key is ok. */
5503 if (hp->type == T_PCSTRING)
5505 /* Redefining a macro is ok if the definitions are the same. */
5506 else if (hp->type == T_MACRO)
5507 ok = ! compare_defs (mdef.defn, hp->value.defn);
5508 /* Redefining a constant is ok with -D. */
5509 else if (hp->type == T_CONST)
5510 ok = ! done_initializing;
5511 /* Print the warning if it's not ok. */
5513 U_CHAR *msg; /* what pain... */
5515 /* If we are passing through #define and #undef directives, do
5516 that for this re-definition now. */
5517 if (debug_output && op)
5518 pass_thru_directive (buf, limit, op, keyword);
5520 msg = (U_CHAR *) alloca (mdef.symlen + 22);
5522 bcopy ((char *) mdef.symnam, (char *) (msg + 1), mdef.symlen);
5523 strcpy ((char *) (msg + mdef.symlen + 1), "' redefined");
5525 if (hp->type == T_MACRO)
5526 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5527 "this is the location of the previous definition");
5529 /* Replace the old definition. */
5531 hp->value.defn = mdef.defn;
5533 /* If we are passing through #define and #undef directives, do
5534 that for this new definition now. */
5535 if (debug_output && op)
5536 pass_thru_directive (buf, limit, op, keyword);
5537 install (mdef.symnam, mdef.symlen, T_MACRO, 0,
5538 (char *) mdef.defn, hashcode);
5549 /* Check a purported macro name SYMNAME, and yield its length.
5550 USAGE is the kind of name this is intended for. */
5553 check_macro_name (symname, usage)
5560 for (p = symname; is_idchar[*p]; p++)
5562 sym_length = p - symname;
5563 if (sym_length == 0)
5564 error ("invalid %s name", usage);
5565 else if (!is_idstart[*symname]) {
5566 U_CHAR *msg; /* what pain... */
5567 msg = (U_CHAR *) alloca (sym_length + 1);
5568 bcopy ((char *) symname, (char *) msg, sym_length);
5569 msg[sym_length] = 0;
5570 error ("invalid %s name `%s'", usage, msg);
5572 if (! strncmp (symname, "defined", 7) && sym_length == 7)
5573 error ("invalid %s name `defined'", usage);
5579 * return zero if two DEFINITIONs are isomorphic
5582 compare_defs (d1, d2)
5583 DEFINITION *d1, *d2;
5585 register struct reflist *a1, *a2;
5586 register U_CHAR *p1 = d1->expansion;
5587 register U_CHAR *p2 = d2->expansion;
5590 if (d1->nargs != d2->nargs)
5592 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5594 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5595 a1 = a1->next, a2 = a2->next) {
5596 if (!((a1->nchars == a2->nchars && ! strncmp (p1, p2, a1->nchars))
5597 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5598 || a1->argno != a2->argno
5599 || a1->stringify != a2->stringify
5600 || a1->raw_before != a2->raw_before
5601 || a1->raw_after != a2->raw_after)
5609 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5610 p2, d2->length - (p2 - d2->expansion), 1))
5615 /* Return 1 if two parts of two macro definitions are effectively different.
5616 One of the parts starts at BEG1 and has LEN1 chars;
5617 the other has LEN2 chars at BEG2.
5618 Any sequence of whitespace matches any other sequence of whitespace.
5619 FIRST means these parts are the first of a macro definition;
5620 so ignore leading whitespace entirely.
5621 LAST means these parts are the last of a macro definition;
5622 so ignore trailing whitespace entirely. */
5625 comp_def_part (first, beg1, len1, beg2, len2, last)
5627 U_CHAR *beg1, *beg2;
5631 register U_CHAR *end1 = beg1 + len1;
5632 register U_CHAR *end2 = beg2 + len2;
5634 while (beg1 != end1 && is_space[*beg1]) beg1++;
5635 while (beg2 != end2 && is_space[*beg2]) beg2++;
5638 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5639 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5641 while (beg1 != end1 && beg2 != end2) {
5642 if (is_space[*beg1] && is_space[*beg2]) {
5643 while (beg1 != end1 && is_space[*beg1]) beg1++;
5644 while (beg2 != end2 && is_space[*beg2]) beg2++;
5645 } else if (*beg1 == *beg2) {
5649 return (beg1 != end1) || (beg2 != end2);
5652 /* Read a replacement list for a macro with parameters.
5653 Build the DEFINITION structure.
5654 Reads characters of text starting at BUF until END.
5655 ARGLIST specifies the formal parameters to look for
5656 in the text of the definition; NARGS is the number of args
5657 in that list, or -1 for a macro name that wants no argument list.
5658 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5659 and NAMELEN is its length in characters.
5661 Note that comments and backslash-newlines have already been deleted
5662 from the argument. */
5664 /* Leading and trailing Space, Tab, etc. are converted to markers
5665 Newline Space, Newline Tab, etc.
5666 Newline Space makes a space in the final output
5667 but is discarded if stringified. (Newline Tab is similar but
5668 makes a Tab instead.)
5670 If there is no trailing whitespace, a Newline Space is added at the end
5671 to prevent concatenation that would be contrary to the standard. */
5674 collect_expansion (buf, end, nargs, arglist)
5677 struct arglist *arglist;
5680 register U_CHAR *p, *limit, *lastp, *exp_p;
5681 struct reflist *endpat = NULL;
5682 /* Pointer to first nonspace after last ## seen. */
5684 /* Pointer to first nonspace after last single-# seen. */
5685 U_CHAR *stringify = 0;
5687 int expected_delimiter = '\0';
5689 /* Scan thru the replacement list, ignoring comments and quoted
5690 strings, picking up on the macro calls. It does a linear search
5691 thru the arg list on every potential symbol. Profiling might say
5692 that something smarter should happen. */
5697 /* Find the beginning of the trailing whitespace. */
5698 /* Find end of leading whitespace. */
5701 while (p < limit && is_space[limit[-1]]) limit--;
5702 while (p < limit && is_space[*p]) p++;
5704 /* Allocate space for the text in the macro definition.
5705 Leading and trailing whitespace chars need 2 bytes each.
5706 Each other input char may or may not need 1 byte,
5707 so this is an upper bound.
5708 The extra 2 are for invented trailing newline-marker and final null. */
5709 maxsize = (sizeof (DEFINITION)
5710 + 2 * (end - limit) + 2 * (p - buf)
5712 defn = (DEFINITION *) xcalloc (1, maxsize);
5714 defn->nargs = nargs;
5715 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5720 /* Convert leading whitespace to Newline-markers. */
5721 while (p < limit && is_space[*p]) {
5726 if (limit - p >= 2 && p[0] == '#' && p[1] == '#') {
5727 error ("`##' at start of macro definition");
5731 /* Process the main body of the definition. */
5733 int skipped_arg = 0;
5734 register U_CHAR c = *p++;
5742 if (expected_delimiter != '\0') {
5743 if (c == expected_delimiter)
5744 expected_delimiter = '\0';
5746 expected_delimiter = c;
5750 if (p < limit && expected_delimiter) {
5751 /* In a string, backslash goes through
5752 and makes next char ordinary. */
5758 /* # is ordinary inside a string. */
5759 if (expected_delimiter)
5761 if (p < limit && *p == '#') {
5762 /* ##: concatenate preceding and following tokens. */
5763 /* Take out the first #, discard preceding whitespace. */
5765 while (exp_p > lastp && is_hor_space[exp_p[-1]])
5767 /* Skip the second #. */
5769 /* Discard following whitespace. */
5770 SKIP_WHITE_SPACE (p);
5773 error ("`##' at end of macro definition");
5774 } else if (nargs >= 0) {
5775 /* Single #: stringify following argument ref.
5776 Don't leave the # in the expansion. */
5778 SKIP_WHITE_SPACE (p);
5779 if (p == limit || ! is_idstart[*p])
5780 error ("`#' operator is not followed by a macro argument name");
5787 /* In -traditional mode, recognize arguments inside strings and
5788 and character constants, and ignore special properties of #.
5789 Arguments inside strings are considered "stringified", but no
5790 extra quote marks are supplied. */
5794 if (expected_delimiter != '\0') {
5795 if (c == expected_delimiter)
5796 expected_delimiter = '\0';
5798 expected_delimiter = c;
5802 /* Backslash quotes delimiters and itself, but not macro args. */
5803 if (expected_delimiter != 0 && p < limit
5804 && (*p == expected_delimiter || *p == '\\')) {
5811 if (expected_delimiter != '\0') /* No comments inside strings. */
5814 /* If we find a comment that wasn't removed by handle_directive,
5815 this must be -traditional. So replace the comment with
5819 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
5822 /* Mark this as a concatenation-point, as if it had been ##. */
5830 /* Handle the start of a symbol. */
5831 if (is_idchar[c] && nargs > 0) {
5832 U_CHAR *id_beg = p - 1;
5836 while (p != limit && is_idchar[*p]) p++;
5837 id_len = p - id_beg;
5839 if (is_idstart[c]) {
5840 register struct arglist *arg;
5842 for (arg = arglist; arg != NULL; arg = arg->next) {
5843 struct reflist *tpat;
5845 if (arg->name[0] == c
5846 && arg->length == id_len
5847 && strncmp (arg->name, id_beg, id_len) == 0) {
5848 if (expected_delimiter && warn_stringify) {
5850 warning ("macro argument `%.*s' is stringified.",
5853 warning ("macro arg `%.*s' would be stringified with -traditional.",
5857 /* If ANSI, don't actually substitute inside a string. */
5858 if (!traditional && expected_delimiter)
5860 /* make a pat node for this arg and append it to the end of
5862 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
5864 tpat->raw_before = concat == id_beg;
5865 tpat->raw_after = 0;
5866 tpat->rest_args = arg->rest_args;
5867 tpat->stringify = (traditional ? expected_delimiter != '\0'
5868 : stringify == id_beg);
5871 defn->pattern = tpat;
5873 endpat->next = tpat;
5876 tpat->argno = arg->argno;
5877 tpat->nchars = exp_p - lastp;
5879 register U_CHAR *p1 = p;
5880 SKIP_WHITE_SPACE (p1);
5881 if (p1 + 2 <= limit && p1[0] == '#' && p1[1] == '#')
5882 tpat->raw_after = 1;
5884 lastp = exp_p; /* place to start copying from next time */
5891 /* If this was not a macro arg, copy it into the expansion. */
5892 if (! skipped_arg) {
5893 register U_CHAR *lim1 = p;
5897 if (stringify == id_beg)
5898 error ("`#' operator should be followed by a macro argument name");
5903 if (!traditional && expected_delimiter == 0) {
5904 /* There is no trailing whitespace, so invent some in ANSI mode.
5905 But not if "inside a string" (which in ANSI mode
5906 happens only for -D option). */
5913 defn->length = exp_p - defn->expansion;
5915 /* Crash now if we overrun the allocated size. */
5916 if (defn->length + 1 > maxsize)
5920 /* This isn't worth the time it takes. */
5921 /* give back excess storage */
5922 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
5929 do_assert (buf, limit, op, keyword)
5930 U_CHAR *buf, *limit;
5932 struct directive *keyword;
5934 U_CHAR *bp; /* temp ptr into input buffer */
5935 U_CHAR *symname; /* remember where symbol name starts */
5936 int sym_length; /* and how long it is */
5937 struct arglist *tokens = NULL;
5939 if (pedantic && done_initializing && !instack[indepth].system_header_p)
5940 pedwarn ("ANSI C does not allow `#assert'");
5944 while (is_hor_space[*bp])
5947 symname = bp; /* remember where it starts */
5948 sym_length = check_macro_name (bp, "assertion");
5950 /* #define doesn't do this, but we should. */
5951 SKIP_WHITE_SPACE (bp);
5953 /* Lossage will occur if identifiers or control tokens are broken
5954 across lines using backslash. This is not the right place to take
5958 error ("missing token-sequence in `#assert'");
5965 bp++; /* skip '(' */
5966 SKIP_WHITE_SPACE (bp);
5968 tokens = read_token_list (&bp, limit, &error_flag);
5972 error ("empty token-sequence in `#assert'");
5976 ++bp; /* skip paren */
5977 SKIP_WHITE_SPACE (bp);
5980 /* If this name isn't already an assertion name, make it one.
5981 Error if it was already in use in some other way. */
5984 ASSERTION_HASHNODE *hp;
5985 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
5986 struct tokenlist_list *value
5987 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
5989 hp = assertion_lookup (symname, sym_length, hashcode);
5991 if (sym_length == 7 && ! strncmp (symname, "defined", sym_length))
5992 error ("`defined' redefined as assertion");
5993 hp = assertion_install (symname, sym_length, hashcode);
5996 /* Add the spec'd token-sequence to the list of such. */
5997 value->tokens = tokens;
5998 value->next = hp->value;
6006 do_unassert (buf, limit, op, keyword)
6007 U_CHAR *buf, *limit;
6009 struct directive *keyword;
6011 U_CHAR *bp; /* temp ptr into input buffer */
6012 U_CHAR *symname; /* remember where symbol name starts */
6013 int sym_length; /* and how long it is */
6015 struct arglist *tokens = NULL;
6016 int tokens_specified = 0;
6018 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6019 pedwarn ("ANSI C does not allow `#unassert'");
6023 while (is_hor_space[*bp])
6026 symname = bp; /* remember where it starts */
6027 sym_length = check_macro_name (bp, "assertion");
6029 /* #define doesn't do this, but we should. */
6030 SKIP_WHITE_SPACE (bp);
6032 /* Lossage will occur if identifiers or control tokens are broken
6033 across lines using backslash. This is not the right place to take
6039 bp++; /* skip '(' */
6040 SKIP_WHITE_SPACE (bp);
6042 tokens = read_token_list (&bp, limit, &error_flag);
6046 error ("empty token list in `#unassert'");
6050 tokens_specified = 1;
6052 ++bp; /* skip paren */
6053 SKIP_WHITE_SPACE (bp);
6057 ASSERTION_HASHNODE *hp;
6058 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6059 struct tokenlist_list *tail, *prev;
6061 hp = assertion_lookup (symname, sym_length, hashcode);
6065 /* If no token list was specified, then eliminate this assertion
6067 if (! tokens_specified) {
6068 struct tokenlist_list *next;
6069 for (tail = hp->value; tail; tail = next) {
6071 free_token_list (tail->tokens);
6074 delete_assertion (hp);
6076 /* If a list of tokens was given, then delete any matching list. */
6081 struct tokenlist_list *next = tail->next;
6082 if (compare_token_lists (tail->tokens, tokens)) {
6086 hp->value = tail->next;
6087 free_token_list (tail->tokens);
6100 /* Test whether there is an assertion named NAME
6101 and optionally whether it has an asserted token list TOKENS.
6102 NAME is not null terminated; its length is SYM_LENGTH.
6103 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6106 check_assertion (name, sym_length, tokens_specified, tokens)
6109 int tokens_specified;
6110 struct arglist *tokens;
6112 ASSERTION_HASHNODE *hp;
6113 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6115 if (pedantic && !instack[indepth].system_header_p)
6116 pedwarn ("ANSI C does not allow testing assertions");
6118 hp = assertion_lookup (name, sym_length, hashcode);
6120 /* It is not an assertion; just return false. */
6123 /* If no token list was specified, then value is 1. */
6124 if (! tokens_specified)
6128 struct tokenlist_list *tail;
6132 /* If a list of tokens was given,
6133 then succeed if the assertion records a matching list. */
6136 if (compare_token_lists (tail->tokens, tokens))
6141 /* Fail if the assertion has no matching list. */
6146 /* Compare two lists of tokens for equality including order of tokens. */
6149 compare_token_lists (l1, l2)
6150 struct arglist *l1, *l2;
6153 if (l1->length != l2->length)
6155 if (strncmp (l1->name, l2->name, l1->length))
6161 /* Succeed if both lists end at the same time. */
6165 /* Read a space-separated list of tokens ending in a close parenthesis.
6166 Return a list of strings, in the order they were written.
6167 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6168 Parse the text starting at *BPP, and update *BPP.
6169 Don't parse beyond LIMIT. */
6171 static struct arglist *
6172 read_token_list (bpp, limit, error_flag)
6177 struct arglist *token_ptrs = 0;
6183 /* Loop over the assertion value tokens. */
6185 struct arglist *temp;
6189 /* Find the end of the token. */
6193 } else if (*bp == ')') {
6198 } else if (*bp == '"' || *bp == '\'')
6199 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6201 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6202 && *bp != '"' && *bp != '\'' && bp != limit)
6205 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6206 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6207 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6208 temp->name[bp - beg] = 0;
6209 temp->next = token_ptrs;
6211 temp->length = bp - beg;
6213 SKIP_WHITE_SPACE (bp);
6216 error ("unterminated token sequence in `#assert' or `#unassert'");
6223 /* We accumulated the names in reverse order.
6224 Now reverse them to get the proper order. */
6226 register struct arglist *prev = 0, *this, *next;
6227 for (this = token_ptrs; this; this = next) {
6237 free_token_list (tokens)
6238 struct arglist *tokens;
6241 struct arglist *next = tokens->next;
6242 free (tokens->name);
6249 * Install a name in the assertion hash table.
6251 * If LEN is >= 0, it is the length of the name.
6252 * Otherwise, compute the length by scanning the entire name.
6254 * If HASH is >= 0, it is the precomputed hash code.
6255 * Otherwise, compute the hash code.
6257 static ASSERTION_HASHNODE *
6258 assertion_install (name, len, hash)
6263 register ASSERTION_HASHNODE *hp;
6264 register int i, bucket;
6265 register U_CHAR *p, *q;
6267 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6268 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6270 hp->bucket_hdr = &assertion_hashtab[bucket];
6271 hp->next = assertion_hashtab[bucket];
6272 assertion_hashtab[bucket] = hp;
6274 if (hp->next != NULL)
6275 hp->next->prev = hp;
6278 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6281 for (i = 0; i < len; i++)
6288 * find the most recent hash node for name name (ending with first
6289 * non-identifier char) installed by install
6291 * If LEN is >= 0, it is the length of the name.
6292 * Otherwise, compute the length by scanning the entire name.
6294 * If HASH is >= 0, it is the precomputed hash code.
6295 * Otherwise, compute the hash code.
6297 static ASSERTION_HASHNODE *
6298 assertion_lookup (name, len, hash)
6303 register ASSERTION_HASHNODE *bucket;
6305 bucket = assertion_hashtab[hash];
6307 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
6309 bucket = bucket->next;
6315 delete_assertion (hp)
6316 ASSERTION_HASHNODE *hp;
6319 if (hp->prev != NULL)
6320 hp->prev->next = hp->next;
6321 if (hp->next != NULL)
6322 hp->next->prev = hp->prev;
6324 /* make sure that the bucket chain header that
6325 the deleted guy was on points to the right thing afterwards. */
6326 if (hp == *hp->bucket_hdr)
6327 *hp->bucket_hdr = hp->next;
6333 * interpret #line command. Remembers previously seen fnames
6334 * in its very own hash table.
6336 #define FNAME_HASHSIZE 37
6339 do_line (buf, limit, op, keyword)
6340 U_CHAR *buf, *limit;
6342 struct directive *keyword;
6344 register U_CHAR *bp;
6345 FILE_BUF *ip = &instack[indepth];
6348 enum file_change_code file_change = same_file;
6350 /* Expand any macros. */
6351 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6353 /* Point to macroexpanded line, which is null-terminated now. */
6355 SKIP_WHITE_SPACE (bp);
6357 if (!isdigit (*bp)) {
6358 error ("invalid format `#line' command");
6362 /* The Newline at the end of this line remains to be processed.
6363 To put the next line at the specified line number,
6364 we must store a line number now that is one less. */
6365 new_lineno = atoi (bp) - 1;
6367 /* NEW_LINENO is one less than the actual line number here. */
6368 if (pedantic && new_lineno < 0)
6369 pedwarn ("line number out of range in `#line' command");
6371 /* skip over the line number. */
6372 while (isdigit (*bp))
6375 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6376 if (*bp && !is_space[*bp]) {
6377 error ("invalid format `#line' command");
6382 SKIP_WHITE_SPACE (bp);
6385 static HASHNODE *fname_table[FNAME_HASHSIZE];
6386 HASHNODE *hp, **hash_bucket;
6392 /* Turn the file name, which is a character string literal,
6393 into a null-terminated string. Do this in place. */
6396 switch ((*p++ = *bp++)) {
6398 error ("invalid format `#line' command");
6403 char *bpc = (char *) bp;
6404 int c = parse_escape (&bpc);
6405 bp = (U_CHAR *) bpc;
6418 fname_length = p - fname;
6420 SKIP_WHITE_SPACE (bp);
6423 pedwarn ("garbage at end of `#line' command");
6425 file_change = enter_file;
6426 else if (*bp == '2')
6427 file_change = leave_file;
6428 else if (*bp == '3')
6429 ip->system_header_p = 1;
6430 else if (*bp == '4')
6431 ip->system_header_p = 2;
6433 error ("invalid format `#line' command");
6438 SKIP_WHITE_SPACE (bp);
6440 ip->system_header_p = 1;
6442 SKIP_WHITE_SPACE (bp);
6445 ip->system_header_p = 2;
6447 SKIP_WHITE_SPACE (bp);
6450 error ("invalid format `#line' command");
6456 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6457 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6458 if (hp->length == fname_length &&
6459 strncmp (hp->value.cpval, fname, fname_length) == 0) {
6460 ip->nominal_fname = hp->value.cpval;
6464 /* Didn't find it; cons up a new one. */
6465 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6466 hp->next = *hash_bucket;
6469 hp->length = fname_length;
6470 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6471 bcopy (fname, hp->value.cpval, fname_length);
6474 error ("invalid format `#line' command");
6478 ip->lineno = new_lineno;
6479 output_line_command (ip, op, 0, file_change);
6480 check_expand (op, ip->length - (ip->bufp - ip->buf));
6485 * remove the definition of a symbol from the symbol table.
6486 * according to un*x /lib/cpp, it is not an error to undef
6487 * something that has no definitions, so it isn't one here either.
6491 do_undef (buf, limit, op, keyword)
6492 U_CHAR *buf, *limit;
6494 struct directive *keyword;
6498 U_CHAR *orig_buf = buf;
6500 /* If this is a precompiler run (with -pcp) pass thru #undef commands. */
6501 if (pcp_outfile && op)
6502 pass_thru_directive (buf, limit, op, keyword);
6504 SKIP_WHITE_SPACE (buf);
6505 sym_length = check_macro_name (buf, "macro");
6507 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6508 /* If we are generating additional info for debugging (with -g) we
6509 need to pass through all effective #undef commands. */
6510 if (debug_output && op)
6511 pass_thru_directive (orig_buf, limit, op, keyword);
6512 if (hp->type != T_MACRO)
6513 warning ("undefining `%s'", hp->name);
6519 SKIP_WHITE_SPACE (buf);
6521 pedwarn ("garbage after `#undef' directive");
6527 * Report an error detected by the program we are processing.
6528 * Use the text of the line in the error message.
6529 * (We use error because it prints the filename & line#.)
6533 do_error (buf, limit, op, keyword)
6534 U_CHAR *buf, *limit;
6536 struct directive *keyword;
6538 int length = limit - buf;
6539 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6540 bcopy ((char *) buf, (char *) copy, length);
6542 SKIP_WHITE_SPACE (copy);
6543 error ("#error %s", copy);
6548 * Report a warning detected by the program we are processing.
6549 * Use the text of the line in the warning message, then continue.
6550 * (We use error because it prints the filename & line#.)
6554 do_warning (buf, limit, op, keyword)
6555 U_CHAR *buf, *limit;
6557 struct directive *keyword;
6559 int length = limit - buf;
6560 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6561 bcopy ((char *) buf, (char *) copy, length);
6563 SKIP_WHITE_SPACE (copy);
6564 warning ("#warning %s", copy);
6568 /* Remember the name of the current file being read from so that we can
6569 avoid ever including it again. */
6575 FILE_BUF *ip = NULL;
6577 for (i = indepth; i >= 0; i--)
6578 if (instack[i].fname != NULL) {
6584 struct file_name_list *new;
6586 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
6587 new->next = dont_repeat_files;
6588 dont_repeat_files = new;
6589 new->fname = savestring (ip->fname);
6590 new->control_macro = 0;
6591 new->got_name_map = 0;
6592 new->c_system_include_path = 0;
6597 /* #ident has already been copied to the output file, so just ignore it. */
6600 do_ident (buf, limit)
6601 U_CHAR *buf, *limit;
6605 FILE_BUF *op = &outbuf;
6607 /* Allow #ident in system headers, since that's not user's fault. */
6608 if (pedantic && !instack[indepth].system_header_p)
6609 pedwarn ("ANSI C does not allow `#ident'");
6611 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6612 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6613 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6614 limit = buf + (trybuf.bufp - trybuf.buf);
6615 len = (limit - buf);
6618 /* Output directive name. */
6619 check_expand (op, 7);
6620 bcopy ("#ident ", (char *) op->bufp, 7);
6623 /* Output the expanded argument line. */
6624 check_expand (op, len);
6625 bcopy ((char *) buf, (char *) op->bufp, len);
6631 /* #pragma and its argument line have already been copied to the output file.
6632 Just check for some recognized pragmas that need validation here. */
6635 do_pragma (buf, limit)
6636 U_CHAR *buf, *limit;
6638 while (*buf == ' ' || *buf == '\t')
6640 if (!strncmp (buf, "once", 4)) {
6641 /* Allow #pragma once in system headers, since that's not the user's
6643 if (!instack[indepth].system_header_p)
6644 warning ("`#pragma once' is obsolete");
6648 if (!strncmp (buf, "implementation", 14)) {
6649 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6650 been included yet. */
6651 struct file_name_list *ptr;
6652 U_CHAR *p = buf + 14, *fname, *inc_fname;
6653 SKIP_WHITE_SPACE (p);
6654 if (*p == '\n' || *p != '\"')
6658 if (p = (U_CHAR *) index (fname, '\"'))
6661 for (ptr = all_include_files; ptr; ptr = ptr->next) {
6662 inc_fname = (U_CHAR *) rindex (ptr->fname, '/');
6663 inc_fname = inc_fname ? inc_fname + 1 : (U_CHAR *) ptr->fname;
6664 if (inc_fname && !strcmp (inc_fname, fname))
6665 warning ("`#pragma implementation' for `%s' appears after file is included",
6674 /* This was a fun hack, but #pragma seems to start to be useful.
6675 By failing to recognize it, we pass it through unchanged to cc1. */
6678 * the behavior of the #pragma directive is implementation defined.
6679 * this implementation defines it as follows.
6686 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6689 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6691 execl ("/usr/games/hack", "#pragma", 0);
6692 execl ("/usr/games/rogue", "#pragma", 0);
6693 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6694 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6696 fatal ("You are in a maze of twisty compiler features, all different");
6700 /* Just ignore #sccs, on systems where we define it at all. */
6706 pedwarn ("ANSI C does not allow `#sccs'");
6711 * handle #if command by
6712 * 1) inserting special `defined' keyword into the hash table
6713 * that gets turned into 0 or 1 by special_symbol (thus,
6714 * if the luser has a symbol called `defined' already, it won't
6715 * work inside the #if command)
6716 * 2) rescan the input into a temporary output buffer
6717 * 3) pass the output buffer to the yacc parser and collect a value
6718 * 4) clean up the mess left from steps 1 and 2.
6719 * 5) call conditional_skip to skip til the next #endif (etc.),
6720 * or not, depending on the value from step 3.
6724 do_if (buf, limit, op, keyword)
6725 U_CHAR *buf, *limit;
6727 struct directive *keyword;
6729 HOST_WIDE_INT value;
6730 FILE_BUF *ip = &instack[indepth];
6732 value = eval_if_expression (buf, limit - buf);
6733 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
6738 * handle a #elif directive by not changing if_stack either.
6739 * see the comment above do_else.
6743 do_elif (buf, limit, op, keyword)
6744 U_CHAR *buf, *limit;
6746 struct directive *keyword;
6748 HOST_WIDE_INT value;
6749 FILE_BUF *ip = &instack[indepth];
6751 if (if_stack == instack[indepth].if_stack) {
6752 error ("`#elif' not within a conditional");
6755 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
6756 error ("`#elif' after `#else'");
6757 fprintf (stderr, " (matches line %d", if_stack->lineno);
6758 if (if_stack->fname != NULL && ip->fname != NULL &&
6759 strcmp (if_stack->fname, ip->nominal_fname) != 0)
6760 fprintf (stderr, ", file %s", if_stack->fname);
6761 fprintf (stderr, ")\n");
6763 if_stack->type = T_ELIF;
6766 if (if_stack->if_succeeded)
6767 skip_if_group (ip, 0, op);
6769 value = eval_if_expression (buf, limit - buf);
6771 skip_if_group (ip, 0, op);
6773 ++if_stack->if_succeeded; /* continue processing input */
6774 output_line_command (ip, op, 1, same_file);
6781 * evaluate a #if expression in BUF, of length LENGTH,
6782 * then parse the result as a C expression and return the value as an int.
6784 static HOST_WIDE_INT
6785 eval_if_expression (buf, length)
6790 HASHNODE *save_defined;
6791 HOST_WIDE_INT value;
6793 save_defined = install ("defined", -1, T_SPEC_DEFINED, 0, NULL_PTR, -1);
6795 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
6797 delete_macro (save_defined); /* clean up special symbol */
6799 value = parse_c_expression (temp_obuf.buf);
6801 free (temp_obuf.buf);
6807 * routine to handle ifdef/ifndef. Try to look up the symbol,
6808 * then do or don't skip to the #endif/#else/#elif depending
6809 * on what directive is actually being processed.
6813 do_xifdef (buf, limit, op, keyword)
6814 U_CHAR *buf, *limit;
6816 struct directive *keyword;
6819 FILE_BUF *ip = &instack[indepth];
6821 int start_of_file = 0;
6822 U_CHAR *control_macro = 0;
6824 /* Detect a #ifndef at start of file (not counting comments). */
6825 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
6826 U_CHAR *p = ip->buf;
6827 while (p != directive_start) {
6831 else if (c == '/' && p != ip->bufp && *p == '*') {
6832 /* Skip this comment. */
6834 U_CHAR *save_bufp = ip->bufp;
6836 p = skip_to_end_of_comment (ip, &junk, 1);
6837 ip->bufp = save_bufp;
6842 /* If we get here, this conditional is the beginning of the file. */
6847 /* Discard leading and trailing whitespace. */
6848 SKIP_WHITE_SPACE (buf);
6849 while (limit != buf && is_hor_space[limit[-1]]) limit--;
6851 /* Find the end of the identifier at the beginning. */
6852 for (end = buf; is_idchar[*end]; end++);
6855 skip = (keyword->type == T_IFDEF);
6857 pedwarn (end == limit ? "`#%s' with no argument"
6858 : "`#%s' argument starts with punctuation",
6863 if (pedantic && buf[0] >= '0' && buf[0] <= '9')
6864 pedwarn ("`#%s' argument starts with a digit", keyword->name);
6865 else if (end != limit && !traditional)
6866 pedwarn ("garbage at end of `#%s' argument", keyword->name);
6868 hp = lookup (buf, end-buf, -1);
6871 /* Output a precondition for this macro. */
6873 (hp->type == T_CONST
6874 || (hp->type == T_MACRO && hp->value.defn->predefined)))
6875 fprintf (pcp_outfile, "#define %s\n", hp->name);
6878 fprintf (pcp_outfile, "#undef ");
6879 while (is_idchar[*cp]) /* Ick! */
6880 fputc (*cp++, pcp_outfile);
6881 putc ('\n', pcp_outfile);
6885 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
6886 if (start_of_file && !skip) {
6887 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
6888 bcopy ((char *) buf, (char *) control_macro, end - buf);
6889 control_macro[end - buf] = 0;
6893 conditional_skip (ip, skip, T_IF, control_macro, op);
6897 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
6898 If this is a #ifndef starting at the beginning of a file,
6899 CONTROL_MACRO is the macro name tested by the #ifndef.
6900 Otherwise, CONTROL_MACRO is 0. */
6903 conditional_skip (ip, skip, type, control_macro, op)
6906 enum node_type type;
6907 U_CHAR *control_macro;
6910 IF_STACK_FRAME *temp;
6912 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
6913 temp->fname = ip->nominal_fname;
6914 temp->lineno = ip->lineno;
6915 temp->next = if_stack;
6916 temp->control_macro = control_macro;
6919 if_stack->type = type;
6922 skip_if_group (ip, 0, op);
6925 ++if_stack->if_succeeded;
6926 output_line_command (ip, &outbuf, 1, same_file);
6931 * skip to #endif, #else, or #elif. adjust line numbers, etc.
6932 * leaves input ptr at the sharp sign found.
6933 * If ANY is nonzero, return at next directive of any sort.
6936 skip_if_group (ip, any, op)
6941 register U_CHAR *bp = ip->bufp, *cp;
6942 register U_CHAR *endb = ip->buf + ip->length;
6943 struct directive *kt;
6944 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
6945 U_CHAR *beg_of_line = bp;
6946 register int ident_length;
6947 U_CHAR *ident, *after_ident;
6948 /* Save info about where the group starts. */
6949 U_CHAR *beg_of_group = bp;
6950 int beg_lineno = ip->lineno;
6952 if (output_conditionals && op != 0) {
6953 char *ptr = "#failed\n";
6954 int len = strlen (ptr);
6956 if (op->bufp > op->buf && op->bufp[-1] != '\n')
6961 check_expand (op, len);
6962 bcopy (ptr, (char *) op->bufp, len);
6965 output_line_command (ip, op, 1, 0);
6970 case '/': /* possible comment */
6971 if (*bp == '\\' && bp[1] == '\n')
6974 || (cplusplus_comments && *bp == '/')) {
6976 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
6981 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
6982 NULL_PTR, NULL_PTR);
6985 /* Char after backslash loses its special meaning. */
6988 ++ip->lineno; /* But do update the line-count. */
6999 /* # keyword: a # must be first nonblank char on the line */
7000 if (beg_of_line == 0)
7002 /* Scan from start of line, skipping whitespace, comments
7003 and backslash-newlines, and see if we reach this #.
7004 If not, this # is not special. */
7006 /* If -traditional, require # to be at beginning of line. */
7009 if (is_hor_space[*bp])
7011 else if (*bp == '\\' && bp[1] == '\n')
7013 else if (*bp == '/' && bp[1] == '*') {
7015 while (!(*bp == '*' && bp[1] == '/'))
7019 /* There is no point in trying to deal with C++ // comments here,
7020 because if there is one, then this # must be part of the
7021 comment and we would never reach here. */
7024 if (bp != ip->bufp) {
7025 bp = ip->bufp + 1; /* Reset bp to after the #. */
7029 bp = ip->bufp + 1; /* Point after the '#' */
7031 /* Skip whitespace and \-newline. */
7033 if (is_hor_space[*bp])
7035 else if (*bp == '\\' && bp[1] == '\n')
7037 else if (*bp == '/' && bp[1] == '*') {
7039 while (!(*bp == '*' && bp[1] == '/')) {
7045 } else if (cplusplus_comments && *bp == '/' && bp[1] == '/') {
7047 while (bp[-1] == '\\' || *bp != '\n') {
7058 /* Now find end of directive name.
7059 If we encounter a backslash-newline, exchange it with any following
7060 symbol-constituents so that we end up with a contiguous name. */
7066 if (*bp == '\\' && bp[1] == '\n')
7067 name_newline_fix (bp);
7073 ident_length = bp - cp;
7077 /* A line of just `#' becomes blank. */
7079 if (ident_length == 0 && *after_ident == '\n') {
7083 if (ident_length == 0 || !is_idstart[*ident]) {
7085 while (is_idchar[*p]) {
7086 if (*p < '0' || *p > '9')
7090 /* Handle # followed by a line number. */
7091 if (p != ident && !is_idchar[*p]) {
7093 pedwarn ("`#' followed by integer");
7097 /* Avoid error for `###' and similar cases unless -pedantic. */
7099 while (*p == '#' || is_hor_space[*p]) p++;
7101 if (pedantic && !lang_asm)
7102 pedwarn ("invalid preprocessor directive");
7107 if (!lang_asm && pedantic)
7108 pedwarn ("invalid preprocessor directive name");
7112 for (kt = directive_table; kt->length >= 0; kt++) {
7113 IF_STACK_FRAME *temp;
7114 if (ident_length == kt->length
7115 && strncmp (cp, kt->name, kt->length) == 0) {
7116 /* If we are asked to return on next directive, do so now. */
7124 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7125 temp->next = if_stack;
7127 temp->lineno = ip->lineno;
7128 temp->fname = ip->nominal_fname;
7129 temp->type = kt->type;
7133 if (pedantic && if_stack != save_if_stack)
7136 if (if_stack == instack[indepth].if_stack) {
7137 error ("`#%s' not within a conditional", kt->name);
7140 else if (if_stack == save_if_stack)
7141 goto done; /* found what we came for */
7143 if (kt->type != T_ENDIF) {
7144 if (if_stack->type == T_ELSE)
7145 error ("`#else' or `#elif' after `#else'");
7146 if_stack->type = kt->type;
7151 if_stack = if_stack->next;
7158 /* Don't let erroneous code go by. */
7159 if (kt->length < 0 && !lang_asm && pedantic)
7160 pedwarn ("invalid preprocessor directive name");
7165 /* after this returns, rescan will exit because ip->bufp
7166 now points to the end of the buffer.
7167 rescan is responsible for the error message also. */
7170 if (output_conditionals && op != 0) {
7171 char *ptr = "#endfailed\n";
7172 int len = strlen (ptr);
7174 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7179 check_expand (op, beg_of_line - beg_of_group);
7180 bcopy ((char *) beg_of_group, (char *) op->bufp,
7181 beg_of_line - beg_of_group);
7182 op->bufp += beg_of_line - beg_of_group;
7183 op->lineno += ip->lineno - beg_lineno;
7184 check_expand (op, len);
7185 bcopy (ptr, (char *) op->bufp, len);
7192 * handle a #else directive. Do this by just continuing processing
7193 * without changing if_stack ; this is so that the error message
7194 * for missing #endif's etc. will point to the original #if. It
7195 * is possible that something different would be better.
7199 do_else (buf, limit, op, keyword)
7200 U_CHAR *buf, *limit;
7202 struct directive *keyword;
7204 FILE_BUF *ip = &instack[indepth];
7207 SKIP_WHITE_SPACE (buf);
7209 pedwarn ("text following `#else' violates ANSI standard");
7212 if (if_stack == instack[indepth].if_stack) {
7213 error ("`#else' not within a conditional");
7216 /* #ifndef can't have its special treatment for containing the whole file
7217 if it has a #else clause. */
7218 if_stack->control_macro = 0;
7220 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7221 error ("`#else' after `#else'");
7222 fprintf (stderr, " (matches line %d", if_stack->lineno);
7223 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7224 fprintf (stderr, ", file %s", if_stack->fname);
7225 fprintf (stderr, ")\n");
7227 if_stack->type = T_ELSE;
7230 if (if_stack->if_succeeded)
7231 skip_if_group (ip, 0, op);
7233 ++if_stack->if_succeeded; /* continue processing input */
7234 output_line_command (ip, op, 1, same_file);
7240 * unstack after #endif command
7244 do_endif (buf, limit, op, keyword)
7245 U_CHAR *buf, *limit;
7247 struct directive *keyword;
7250 SKIP_WHITE_SPACE (buf);
7252 pedwarn ("text following `#endif' violates ANSI standard");
7255 if (if_stack == instack[indepth].if_stack)
7256 error ("unbalanced `#endif'");
7258 IF_STACK_FRAME *temp = if_stack;
7259 if_stack = if_stack->next;
7260 if (temp->control_macro != 0) {
7261 /* This #endif matched a #ifndef at the start of the file.
7262 See if it is at the end of the file. */
7263 FILE_BUF *ip = &instack[indepth];
7264 U_CHAR *p = ip->bufp;
7265 U_CHAR *ep = ip->buf + ip->length;
7275 if (p != ep && *p == '*') {
7276 /* Skip this comment. */
7278 U_CHAR *save_bufp = ip->bufp;
7280 p = skip_to_end_of_comment (ip, &junk, 1);
7281 ip->bufp = save_bufp;
7288 /* If we get here, this #endif ends a #ifndef
7289 that contains all of the file (aside from whitespace).
7290 Arrange not to include the file again
7291 if the macro that was tested is defined.
7293 Do not do this for the top-level file in a -include or any
7294 file in a -imacros. */
7296 && ! (indepth == 1 && no_record_file)
7297 && ! (no_record_file && no_output))
7298 record_control_macro (ip->fname, temp->control_macro);
7302 output_line_command (&instack[indepth], op, 1, same_file);
7307 /* When an #else or #endif is found while skipping failed conditional,
7308 if -pedantic was specified, this is called to warn about text after
7309 the command name. P points to the first char after the command name. */
7315 /* Advance P over whitespace and comments. */
7317 if (*p == '\\' && p[1] == '\n')
7319 if (is_hor_space[*p])
7321 else if (*p == '/') {
7322 if (p[1] == '\\' && p[2] == '\n')
7323 newline_fix (p + 1);
7326 /* Don't bother warning about unterminated comments
7327 since that will happen later. Just be sure to exit. */
7329 if (p[1] == '\\' && p[2] == '\n')
7330 newline_fix (p + 1);
7331 if (*p == '*' && p[1] == '/') {
7338 else if (cplusplus_comments && p[1] == '/') {
7340 while (*p && (*p != '\n' || p[-1] == '\\'))
7345 if (*p && *p != '\n')
7346 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7349 /* Skip a comment, assuming the input ptr immediately follows the
7350 initial slash-star. Bump *LINE_COUNTER for each newline.
7351 (The canonical line counter is &ip->lineno.)
7352 Don't use this routine (or the next one) if bumping the line
7353 counter is not sufficient to deal with newlines in the string.
7355 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7356 This feature is useful when processing a comment that is going to be
7357 processed or was processed at another point in the preprocessor,
7358 to avoid a duplicate warning. Likewise for unterminated comment errors. */
7361 skip_to_end_of_comment (ip, line_counter, nowarn)
7362 register FILE_BUF *ip;
7363 int *line_counter; /* place to remember newlines, or NULL */
7366 register U_CHAR *limit = ip->buf + ip->length;
7367 register U_CHAR *bp = ip->bufp;
7368 FILE_BUF *op = &outbuf; /* JF */
7369 int output = put_out_comments && !line_counter;
7370 int start_line = line_counter ? *line_counter : 0;
7372 /* JF this line_counter stuff is a crock to make sure the
7373 comment is only put out once, no matter how many times
7374 the comment is skipped. It almost works */
7379 if (cplusplus_comments && bp[-1] == '/') {
7381 while (bp < limit) {
7383 if (*bp == '\n' && bp[-1] != '\\')
7395 while (bp < limit) {
7396 if (bp[-1] != '\\' && *bp == '\n') {
7399 if (*bp == '\n' && line_counter)
7408 while (bp < limit) {
7413 if (warn_comments && !nowarn && bp < limit && *bp == '*')
7414 warning ("`/*' within comment");
7417 /* If this is the end of the file, we have an unterminated comment.
7418 Don't swallow the newline. We are guaranteed that there will be a
7419 trailing newline and various pieces assume it's there. */
7426 if (line_counter != NULL)
7432 if (*bp == '\\' && bp[1] == '\n')
7445 error_with_line (line_for_error (start_line), "unterminated comment");
7451 * Skip over a quoted string. BP points to the opening quote.
7452 * Returns a pointer after the closing quote. Don't go past LIMIT.
7453 * START_LINE is the line number of the starting point (but it need
7454 * not be valid if the starting point is inside a macro expansion).
7456 * The input stack state is not changed.
7458 * If COUNT_NEWLINES is nonzero, it points to an int to increment
7459 * for each newline passed.
7461 * If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7462 * if we pass a backslash-newline.
7464 * If EOFP is nonzero, set *EOFP to 1 if the string is unterminated.
7467 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7468 register U_CHAR *bp;
7469 register U_CHAR *limit;
7471 int *count_newlines;
7472 int *backslash_newlines_p;
7475 register U_CHAR c, match;
7480 error_with_line (line_for_error (start_line),
7481 "unterminated string or character constant");
7482 error_with_line (multiline_string_line,
7483 "possible real start of unterminated constant");
7484 multiline_string_line = 0;
7491 while (*bp == '\\' && bp[1] == '\n') {
7492 if (backslash_newlines_p)
7493 *backslash_newlines_p = 1;
7498 if (*bp == '\n' && count_newlines) {
7499 if (backslash_newlines_p)
7500 *backslash_newlines_p = 1;
7504 } else if (c == '\n') {
7506 /* Unterminated strings and character constants are 'legal'. */
7507 bp--; /* Don't consume the newline. */
7512 if (pedantic || match == '\'') {
7513 error_with_line (line_for_error (start_line),
7514 "unterminated string or character constant");
7520 /* If not traditional, then allow newlines inside strings. */
7523 if (multiline_string_line == 0)
7524 multiline_string_line = start_line;
7525 } else if (c == match)
7531 /* Place into DST a quoted string representing the string SRC.
7532 Return the address of DST's terminating null. */
7534 quote_string (dst, src)
7541 switch ((c = *src++))
7548 sprintf (dst, "\\%03o", c);
7566 /* Skip across a group of balanced parens, starting from IP->bufp.
7567 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7569 This does not handle newlines, because it's used for the arg of #if,
7570 where there aren't any newlines. Also, backslash-newline can't appear. */
7573 skip_paren_group (ip)
7574 register FILE_BUF *ip;
7576 U_CHAR *limit = ip->buf + ip->length;
7577 U_CHAR *p = ip->bufp;
7579 int lines_dummy = 0;
7581 while (p != limit) {
7591 return ip->bufp = p;
7597 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7605 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7607 return ip->bufp = p;
7618 * write out a #line command, for instance, after an #include file.
7619 * If CONDITIONAL is nonzero, we can omit the #line if it would
7620 * appear to be a no-op, and we can output a few newlines instead
7621 * if we want to increase the line number by a small amount.
7622 * FILE_CHANGE says whether we are entering a file, leaving, or neither.
7626 output_line_command (ip, op, conditional, file_change)
7629 enum file_change_code file_change;
7632 char *line_cmd_buf, *line_end;
7634 if (no_line_commands
7635 || ip->fname == NULL
7637 op->lineno = ip->lineno;
7642 if (ip->lineno == op->lineno)
7645 /* If the inherited line number is a little too small,
7646 output some newlines instead of a #line command. */
7647 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7648 check_expand (op, 10);
7649 while (ip->lineno > op->lineno) {
7657 /* Don't output a line number of 0 if we can help it. */
7658 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7659 && *ip->bufp == '\n') {
7664 line_cmd_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7665 #ifdef OUTPUT_LINE_COMMANDS
7666 sprintf (line_cmd_buf, "#line %d ", ip->lineno);
7668 sprintf (line_cmd_buf, "# %d ", ip->lineno);
7670 line_end = quote_string (line_cmd_buf + strlen (line_cmd_buf),
7672 if (file_change != same_file) {
7674 *line_end++ = file_change == enter_file ? '1' : '2';
7676 /* Tell cc1 if following text comes from a system header file. */
7677 if (ip->system_header_p) {
7681 #ifndef NO_IMPLICIT_EXTERN_C
7682 /* Tell cc1plus if following text should be treated as C. */
7683 if (ip->system_header_p == 2 && cplusplus) {
7689 len = line_end - line_cmd_buf;
7690 check_expand (op, len + 1);
7691 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7693 bcopy ((char *) line_cmd_buf, (char *) op->bufp, len);
7695 op->lineno = ip->lineno;
7698 /* This structure represents one parsed argument in a macro call.
7699 `raw' points to the argument text as written (`raw_length' is its length).
7700 `expanded' points to the argument's macro-expansion
7701 (its length is `expand_length').
7702 `stringified_length' is the length the argument would have
7704 `use_count' is the number of times this macro arg is substituted
7705 into the macro. If the actual use count exceeds 10,
7706 the value stored is 10.
7707 `free1' and `free2', if nonzero, point to blocks to be freed
7708 when the macro argument data is no longer needed. */
7711 U_CHAR *raw, *expanded;
7712 int raw_length, expand_length;
7713 int stringified_length;
7714 U_CHAR *free1, *free2;
7720 /* Expand a macro call.
7721 HP points to the symbol that is the macro being called.
7722 Put the result of expansion onto the input stack
7723 so that subsequent input by our caller will use it.
7725 If macro wants arguments, caller has already verified that
7726 an argument list follows; arguments come from the input stack. */
7729 macroexpand (hp, op)
7734 DEFINITION *defn = hp->value.defn;
7735 register U_CHAR *xbuf;
7737 int start_line = instack[indepth].lineno;
7738 int rest_args, rest_zero;
7740 CHECK_DEPTH (return;);
7742 /* it might not actually be a macro. */
7743 if (hp->type != T_MACRO) {
7744 special_symbol (hp, op);
7748 /* This macro is being used inside a #if, which means it must be */
7749 /* recorded as a precondition. */
7750 if (pcp_inside_if && pcp_outfile && defn->predefined)
7751 dump_single_macro (hp, pcp_outfile);
7753 nargs = defn->nargs;
7757 struct argdata *args;
7758 char *parse_error = 0;
7760 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
7762 for (i = 0; i < nargs; i++) {
7763 args[i].raw = (U_CHAR *) "";
7764 args[i].expanded = 0;
7765 args[i].raw_length = args[i].expand_length
7766 = args[i].stringified_length = 0;
7767 args[i].free1 = args[i].free2 = 0;
7768 args[i].use_count = 0;
7771 /* Parse all the macro args that are supplied. I counts them.
7772 The first NARGS args are stored in ARGS.
7773 The rest are discarded.
7774 If rest_args is set then we assume macarg absorbed the rest of the args.
7779 /* Discard the open-parenthesis or comma before the next arg. */
7780 ++instack[indepth].bufp;
7783 if (i < nargs || (nargs == 0 && i == 0)) {
7784 /* if we are working on last arg which absorbs rest of args... */
7785 if (i == nargs - 1 && defn->rest_args)
7787 parse_error = macarg (&args[i], rest_args);
7790 parse_error = macarg (NULL_PTR, 0);
7792 error_with_line (line_for_error (start_line), parse_error);
7796 } while (*instack[indepth].bufp != ')');
7798 /* If we got one arg but it was just whitespace, call that 0 args. */
7800 register U_CHAR *bp = args[0].raw;
7801 register U_CHAR *lim = bp + args[0].raw_length;
7802 /* cpp.texi says for foo ( ) we provide one argument.
7803 However, if foo wants just 0 arguments, treat this as 0. */
7805 while (bp != lim && is_space[*bp]) bp++;
7810 /* Don't output an error message if we have already output one for
7811 a parse error above. */
7813 if (nargs == 0 && i > 0) {
7815 error ("arguments given to macro `%s'", hp->name);
7816 } else if (i < nargs) {
7817 /* traditional C allows foo() if foo wants one argument. */
7818 if (nargs == 1 && i == 0 && traditional)
7820 /* the rest args token is allowed to absorb 0 tokens */
7821 else if (i == nargs - 1 && defn->rest_args)
7823 else if (parse_error)
7826 error ("macro `%s' used without args", hp->name);
7828 error ("macro `%s' used with just one arg", hp->name);
7830 error ("macro `%s' used with only %d args", hp->name, i);
7831 } else if (i > nargs) {
7833 error ("macro `%s' used with too many (%d) args", hp->name, i);
7836 /* Swallow the closeparen. */
7837 ++instack[indepth].bufp;
7839 /* If macro wants zero args, we parsed the arglist for checking only.
7840 Read directly from the macro definition. */
7842 xbuf = defn->expansion;
7843 xbuf_len = defn->length;
7845 register U_CHAR *exp = defn->expansion;
7846 register int offset; /* offset in expansion,
7847 copied a piece at a time */
7848 register int totlen; /* total amount of exp buffer filled so far */
7850 register struct reflist *ap, *last_ap;
7852 /* Macro really takes args. Compute the expansion of this call. */
7854 /* Compute length in characters of the macro's expansion.
7855 Also count number of times each arg is used. */
7856 xbuf_len = defn->length;
7857 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
7859 xbuf_len += args[ap->argno].stringified_length;
7860 else if (ap->raw_before || ap->raw_after || traditional)
7861 /* Add 4 for two newline-space markers to prevent
7862 token concatenation. */
7863 xbuf_len += args[ap->argno].raw_length + 4;
7865 /* We have an ordinary (expanded) occurrence of the arg.
7866 So compute its expansion, if we have not already. */
7867 if (args[ap->argno].expanded == 0) {
7869 obuf = expand_to_temp_buffer (args[ap->argno].raw,
7870 args[ap->argno].raw + args[ap->argno].raw_length,
7873 args[ap->argno].expanded = obuf.buf;
7874 args[ap->argno].expand_length = obuf.length;
7875 args[ap->argno].free2 = obuf.buf;
7878 /* Add 4 for two newline-space markers to prevent
7879 token concatenation. */
7880 xbuf_len += args[ap->argno].expand_length + 4;
7882 if (args[ap->argno].use_count < 10)
7883 args[ap->argno].use_count++;
7886 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
7888 /* Generate in XBUF the complete expansion
7889 with arguments substituted in.
7890 TOTLEN is the total size generated so far.
7891 OFFSET is the index in the definition
7892 of where we are copying from. */
7893 offset = totlen = 0;
7894 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
7895 last_ap = ap, ap = ap->next) {
7896 register struct argdata *arg = &args[ap->argno];
7897 int count_before = totlen;
7899 /* Add chars to XBUF. */
7900 for (i = 0; i < ap->nchars; i++, offset++)
7901 xbuf[totlen++] = exp[offset];
7903 /* If followed by an empty rest arg with concatenation,
7904 delete the last run of nonwhite chars. */
7905 if (rest_zero && totlen > count_before
7906 && ((ap->rest_args && ap->raw_before)
7907 || (last_ap != NULL && last_ap->rest_args
7908 && last_ap->raw_after))) {
7909 /* Delete final whitespace. */
7910 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
7914 /* Delete the nonwhites before them. */
7915 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
7920 if (ap->stringify != 0) {
7921 int arglen = arg->raw_length;
7927 && (c = arg->raw[i], is_space[c]))
7930 && (c = arg->raw[arglen - 1], is_space[c]))
7933 xbuf[totlen++] = '\"'; /* insert beginning quote */
7934 for (; i < arglen; i++) {
7937 /* Special markers Newline Space
7938 generate nothing for a stringified argument. */
7939 if (c == '\n' && arg->raw[i+1] != '\n') {
7944 /* Internal sequences of whitespace are replaced by one space
7945 except within an string or char token. */
7947 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
7949 /* Note that Newline Space does occur within whitespace
7950 sequences; consider it part of the sequence. */
7951 if (c == '\n' && is_space[arg->raw[i+1]])
7953 else if (c != '\n' && is_space[c])
7970 } else if (c == '\"' || c == '\'')
7974 /* Escape these chars */
7975 if (c == '\"' || (in_string && c == '\\'))
7976 xbuf[totlen++] = '\\';
7980 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
7985 xbuf[totlen++] = '\"'; /* insert ending quote */
7986 } else if (ap->raw_before || ap->raw_after || traditional) {
7987 U_CHAR *p1 = arg->raw;
7988 U_CHAR *l1 = p1 + arg->raw_length;
7989 if (ap->raw_before) {
7990 while (p1 != l1 && is_space[*p1]) p1++;
7991 while (p1 != l1 && is_idchar[*p1])
7992 xbuf[totlen++] = *p1++;
7993 /* Delete any no-reexpansion marker that follows
7994 an identifier at the beginning of the argument
7995 if the argument is concatenated with what precedes it. */
7996 if (p1[0] == '\n' && p1[1] == '-')
7998 } else if (!traditional) {
7999 /* Ordinary expanded use of the argument.
8000 Put in newline-space markers to prevent token pasting. */
8001 xbuf[totlen++] = '\n';
8002 xbuf[totlen++] = ' ';
8004 if (ap->raw_after) {
8005 /* Arg is concatenated after: delete trailing whitespace,
8006 whitespace markers, and no-reexpansion markers. */
8008 if (is_space[l1[-1]]) l1--;
8009 else if (l1[-1] == '-') {
8010 U_CHAR *p2 = l1 - 1;
8011 /* If a `-' is preceded by an odd number of newlines then it
8012 and the last newline are a no-reexpansion marker. */
8013 while (p2 != p1 && p2[-1] == '\n') p2--;
8014 if ((l1 - 1 - p2) & 1) {
8023 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8025 if (!traditional && !ap->raw_after) {
8026 /* Ordinary expanded use of the argument.
8027 Put in newline-space markers to prevent token pasting. */
8028 xbuf[totlen++] = '\n';
8029 xbuf[totlen++] = ' ';
8032 /* Ordinary expanded use of the argument.
8033 Put in newline-space markers to prevent token pasting. */
8035 xbuf[totlen++] = '\n';
8036 xbuf[totlen++] = ' ';
8038 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8039 arg->expand_length);
8040 totlen += arg->expand_length;
8042 xbuf[totlen++] = '\n';
8043 xbuf[totlen++] = ' ';
8045 /* If a macro argument with newlines is used multiple times,
8046 then only expand the newlines once. This avoids creating output
8047 lines which don't correspond to any input line, which confuses
8049 if (arg->use_count > 1 && arg->newlines > 0) {
8050 /* Don't bother doing change_newlines for subsequent
8054 = change_newlines (arg->expanded, arg->expand_length);
8058 if (totlen > xbuf_len)
8062 /* if there is anything left of the definition
8063 after handling the arg list, copy that in too. */
8065 for (i = offset; i < defn->length; i++) {
8066 /* if we've reached the end of the macro */
8069 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8070 && last_ap->raw_after))
8071 xbuf[totlen++] = exp[i];
8077 for (i = 0; i < nargs; i++) {
8078 if (args[i].free1 != 0)
8079 free (args[i].free1);
8080 if (args[i].free2 != 0)
8081 free (args[i].free2);
8085 xbuf = defn->expansion;
8086 xbuf_len = defn->length;
8089 /* Now put the expansion on the input stack
8090 so our caller will commence reading from it. */
8092 register FILE_BUF *ip2;
8094 ip2 = &instack[++indepth];
8097 ip2->nominal_fname = 0;
8098 /* This may not be exactly correct, but will give much better error
8099 messages for nested macro calls than using a line number of zero. */
8100 ip2->lineno = start_line;
8102 ip2->length = xbuf_len;
8104 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8106 ip2->if_stack = if_stack;
8107 ip2->system_header_p = 0;
8109 /* Recursive macro use sometimes works traditionally.
8110 #define foo(x,y) bar (x (y,0), y)
8114 hp->type = T_DISABLED;
8119 * Parse a macro argument and store the info on it into *ARGPTR.
8120 * REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8121 * Return nonzero to indicate a syntax error.
8125 macarg (argptr, rest_args)
8126 register struct argdata *argptr;
8129 FILE_BUF *ip = &instack[indepth];
8134 /* Try to parse as much of the argument as exists at this
8135 input stack level. */
8136 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8137 &paren, &newlines, &comments, rest_args);
8139 /* If we find the end of the argument at this level,
8140 set up *ARGPTR to point at it in the input stack. */
8141 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8142 && bp != ip->buf + ip->length) {
8144 argptr->raw = ip->bufp;
8145 argptr->raw_length = bp - ip->bufp;
8146 argptr->newlines = newlines;
8150 /* This input stack level ends before the macro argument does.
8151 We must pop levels and keep parsing.
8152 Therefore, we must allocate a temporary buffer and copy
8153 the macro argument into it. */
8154 int bufsize = bp - ip->bufp;
8155 int extra = newlines;
8156 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8157 int final_start = 0;
8159 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8161 ip->lineno += newlines;
8163 while (bp == ip->buf + ip->length) {
8164 if (instack[indepth].macro == 0) {
8166 return "unterminated macro call";
8168 ip->macro->type = T_MACRO;
8170 free (ip->free_ptr);
8171 ip = &instack[--indepth];
8174 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8175 &newlines, &comments, rest_args);
8176 final_start = bufsize;
8177 bufsize += bp - ip->bufp;
8179 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8180 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8183 ip->lineno += newlines;
8186 /* Now, if arg is actually wanted, record its raw form,
8187 discarding comments and duplicating newlines in whatever
8188 part of it did not come from a macro expansion.
8189 EXTRA space has been preallocated for duplicating the newlines.
8190 FINAL_START is the index of the start of that part. */
8192 argptr->raw = buffer;
8193 argptr->raw_length = bufsize;
8194 argptr->free1 = buffer;
8195 argptr->newlines = newlines;
8196 argptr->comments = comments;
8197 if ((newlines || comments) && ip->fname != 0)
8200 discard_comments (argptr->raw + final_start,
8201 argptr->raw_length - final_start,
8203 argptr->raw[argptr->raw_length] = 0;
8204 if (argptr->raw_length > bufsize + extra)
8209 /* If we are not discarding this argument,
8210 macroexpand it and compute its length as stringified.
8211 All this info goes into *ARGPTR. */
8214 register U_CHAR *buf, *lim;
8215 register int totlen;
8218 lim = buf + argptr->raw_length;
8220 while (buf != lim && is_space[*buf])
8222 while (buf != lim && is_space[lim[-1]])
8224 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8225 while (buf != lim) {
8226 register U_CHAR c = *buf++;
8228 /* Internal sequences of whitespace are replaced by one space
8229 in most cases, but not always. So count all the whitespace
8230 in case we need to keep it all. */
8233 SKIP_ALL_WHITE_SPACE (buf);
8236 if (c == '\"' || c == '\\') /* escape these chars */
8238 else if (!isprint (c))
8241 argptr->stringified_length = totlen;
8246 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8247 counting parens in *DEPTHPTR,
8248 and return if reach LIMIT
8249 or before a `)' that would make *DEPTHPTR negative
8250 or before a comma when *DEPTHPTR is zero.
8251 Single and double quotes are matched and termination
8252 is inhibited within them. Comments also inhibit it.
8253 Value returned is pointer to stopping place.
8255 Increment *NEWLINES each time a newline is passed.
8256 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8257 Set *COMMENTS to 1 if a comment is seen. */
8260 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8262 register U_CHAR *limit;
8263 int *depthptr, *newlines, *comments;
8266 register U_CHAR *bp = start;
8268 while (bp < limit) {
8274 if (--(*depthptr) < 0)
8278 /* Traditionally, backslash makes following char not special. */
8279 if (bp + 1 < limit && traditional)
8282 /* But count source lines anyway. */
8291 if (bp[1] == '\\' && bp[2] == '\n')
8292 newline_fix (bp + 1);
8293 if (cplusplus_comments && bp[1] == '/') {
8296 while (bp < limit && (*bp != '\n' || bp[-1] == '\\')) {
8297 if (*bp == '\n') ++*newlines;
8302 if (bp[1] != '*' || bp + 1 >= limit)
8306 while (bp + 1 < limit) {
8308 && bp[1] == '\\' && bp[2] == '\n')
8309 newline_fix (bp + 1);
8310 if (bp[0] == '*' && bp[1] == '/')
8312 if (*bp == '\n') ++*newlines;
8320 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8325 while (*bp == '\\' && bp[1] == '\n') {
8328 } else if (*bp == '\n') {
8337 /* if we've returned to lowest level and we aren't absorbing all args */
8338 if ((*depthptr) == 0 && rest_args == 0)
8348 /* Discard comments and duplicate newlines
8349 in the string of length LENGTH at START,
8350 except inside of string constants.
8351 The string is copied into itself with its beginning staying fixed.
8353 NEWLINES is the number of newlines that must be duplicated.
8354 We assume that that much extra space is available past the end
8358 discard_comments (start, length, newlines)
8363 register U_CHAR *ibp;
8364 register U_CHAR *obp;
8365 register U_CHAR *limit;
8368 /* If we have newlines to duplicate, copy everything
8369 that many characters up. Then, in the second part,
8370 we will have room to insert the newlines
8372 NEWLINES may actually be too large, because it counts
8373 newlines in string constants, and we don't duplicate those.
8374 But that does no harm. */
8376 ibp = start + length;
8377 obp = ibp + newlines;
8379 while (limit != ibp)
8383 ibp = start + newlines;
8384 limit = start + length + newlines;
8387 while (ibp < limit) {
8388 *obp++ = c = *ibp++;
8391 /* Duplicate the newline. */
8403 if (*ibp == '\\' && ibp[1] == '\n')
8405 /* Delete any comment. */
8406 if (cplusplus_comments && ibp[0] == '/') {
8407 /* Comments are equivalent to spaces. */
8410 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8414 if (ibp[0] != '*' || ibp + 1 >= limit)
8416 /* Comments are equivalent to spaces. */
8419 while (ibp + 1 < limit) {
8421 && ibp[1] == '\\' && ibp[2] == '\n')
8422 newline_fix (ibp + 1);
8423 if (ibp[0] == '*' && ibp[1] == '/')
8432 /* Notice and skip strings, so that we don't
8433 think that comments start inside them,
8434 and so we don't duplicate newlines in them. */
8437 while (ibp < limit) {
8438 *obp++ = c = *ibp++;
8441 if (c == '\n' && quotec == '\'')
8443 if (c == '\\' && ibp < limit) {
8444 while (*ibp == '\\' && ibp[1] == '\n')
8457 /* Turn newlines to spaces in the string of length LENGTH at START,
8458 except inside of string constants.
8459 The string is copied into itself with its beginning staying fixed. */
8462 change_newlines (start, length)
8466 register U_CHAR *ibp;
8467 register U_CHAR *obp;
8468 register U_CHAR *limit;
8472 limit = start + length;
8475 while (ibp < limit) {
8476 *obp++ = c = *ibp++;
8479 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8480 string. Skip past the newline and its duplicate.
8481 Put a space in the output. */
8492 /* Notice and skip strings, so that we don't delete newlines in them. */
8495 while (ibp < limit) {
8496 *obp++ = c = *ibp++;
8499 if (c == '\n' && quotec == '\'')
8511 * my_strerror - return the descriptive text associated with an `errno' code.
8515 my_strerror (errnum)
8521 #ifndef HAVE_STRERROR
8522 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8524 result = strerror (errnum);
8527 /* VAXCRTL's strerror() takes an optional second argument, which only
8528 matters when the first argument is EVMSERR. However, it's simplest
8529 just to pass it unconditionally. `vaxc$errno' is declared in
8530 <errno.h>, and maintained by the library in parallel with `errno'.
8531 We assume that caller's `errnum' either matches the last setting of
8532 `errno' by the library or else does not have the value `EVMSERR'. */
8534 result = strerror (errnum, vaxc$errno);
8538 result = "undocumented I/O error";
8544 * error - print error message and increment count of errors.
8548 error (msg, arg1, arg2, arg3)
8550 char *arg1, *arg2, *arg3;
8553 FILE_BUF *ip = NULL;
8555 print_containing_files ();
8557 for (i = indepth; i >= 0; i--)
8558 if (instack[i].fname != NULL) {
8564 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8565 fprintf (stderr, msg, arg1, arg2, arg3);
8566 fprintf (stderr, "\n");
8570 /* Error including a message from `errno'. */
8573 error_from_errno (name)
8577 FILE_BUF *ip = NULL;
8579 print_containing_files ();
8581 for (i = indepth; i >= 0; i--)
8582 if (instack[i].fname != NULL) {
8588 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8590 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8595 /* Print error message but don't count it. */
8598 warning (msg, arg1, arg2, arg3)
8600 char *arg1, *arg2, *arg3;
8603 FILE_BUF *ip = NULL;
8605 if (inhibit_warnings)
8608 if (warnings_are_errors)
8611 print_containing_files ();
8613 for (i = indepth; i >= 0; i--)
8614 if (instack[i].fname != NULL) {
8620 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8621 fprintf (stderr, "warning: ");
8622 fprintf (stderr, msg, arg1, arg2, arg3);
8623 fprintf (stderr, "\n");
8627 error_with_line (line, msg, arg1, arg2, arg3)
8630 char *arg1, *arg2, *arg3;
8633 FILE_BUF *ip = NULL;
8635 print_containing_files ();
8637 for (i = indepth; i >= 0; i--)
8638 if (instack[i].fname != NULL) {
8644 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8645 fprintf (stderr, msg, arg1, arg2, arg3);
8646 fprintf (stderr, "\n");
8651 warning_with_line (line, msg, arg1, arg2, arg3)
8654 char *arg1, *arg2, *arg3;
8657 FILE_BUF *ip = NULL;
8659 if (inhibit_warnings)
8662 if (warnings_are_errors)
8665 print_containing_files ();
8667 for (i = indepth; i >= 0; i--)
8668 if (instack[i].fname != NULL) {
8674 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8675 fprintf (stderr, "warning: ");
8676 fprintf (stderr, msg, arg1, arg2, arg3);
8677 fprintf (stderr, "\n");
8680 /* print an error message and maybe count it. */
8683 pedwarn (msg, arg1, arg2, arg3)
8685 char *arg1, *arg2, *arg3;
8687 if (pedantic_errors)
8688 error (msg, arg1, arg2, arg3);
8690 warning (msg, arg1, arg2, arg3);
8694 pedwarn_with_line (line, msg, arg1, arg2, arg3)
8697 char *arg1, *arg2, *arg3;
8699 if (pedantic_errors)
8700 error_with_line (line, msg, arg1, arg2, arg3);
8702 warning_with_line (line, msg, arg1, arg2, arg3);
8705 /* Report a warning (or an error if pedantic_errors)
8706 giving specified file name and line number, not current. */
8709 pedwarn_with_file_and_line (file, line, msg, arg1, arg2, arg3)
8713 char *arg1, *arg2, *arg3;
8715 if (!pedantic_errors && inhibit_warnings)
8718 fprintf (stderr, "%s:%d: ", file, line);
8719 if (pedantic_errors)
8721 if (!pedantic_errors)
8722 fprintf (stderr, "warning: ");
8723 fprintf (stderr, msg, arg1, arg2, arg3);
8724 fprintf (stderr, "\n");
8727 /* Print the file names and line numbers of the #include
8728 commands which led to the current file. */
8731 print_containing_files ()
8733 FILE_BUF *ip = NULL;
8737 /* If stack of files hasn't changed since we last printed
8738 this info, don't repeat it. */
8739 if (last_error_tick == input_file_stack_tick)
8742 for (i = indepth; i >= 0; i--)
8743 if (instack[i].fname != NULL) {
8748 /* Give up if we don't find a source file. */
8752 /* Find the other, outer source files. */
8753 for (i--; i >= 0; i--)
8754 if (instack[i].fname != NULL) {
8758 fprintf (stderr, "In file included");
8760 fprintf (stderr, ",\n ");
8763 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
8766 fprintf (stderr, ":\n");
8768 /* Record we have printed the status as of this time. */
8769 last_error_tick = input_file_stack_tick;
8772 /* Return the line at which an error occurred.
8773 The error is not necessarily associated with the current spot
8774 in the input stack, so LINE says where. LINE will have been
8775 copied from ip->lineno for the current input level.
8776 If the current level is for a file, we return LINE.
8777 But if the current level is not for a file, LINE is meaningless.
8778 In that case, we return the lineno of the innermost file. */
8781 line_for_error (line)
8787 for (i = indepth; i >= 0; ) {
8788 if (instack[i].fname != 0)
8793 line1 = instack[i].lineno;
8801 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
8803 * As things stand, nothing is ever placed in the output buffer to be
8804 * removed again except when it's KNOWN to be part of an identifier,
8805 * so flushing and moving down everything left, instead of expanding,
8809 /* You might think void was cleaner for the return type,
8810 but that would get type mismatch in check_expand in strict ANSI. */
8812 grow_outbuf (obuf, needed)
8813 register FILE_BUF *obuf;
8814 register int needed;
8819 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
8822 /* Make it at least twice as big as it is now. */
8824 /* Make it have at least 150% of the free space we will need. */
8825 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
8826 if (minsize > obuf->length)
8827 obuf->length = minsize;
8829 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
8832 obuf->bufp = p + (obuf->bufp - obuf->buf);
8838 /* Symbol table for macro names and special symbols */
8841 * install a name in the main hash table, even if it is already there.
8842 * name stops with first non alphanumeric, except leading '#'.
8843 * caller must check against redefinition if that is desired.
8844 * delete_macro () removes things installed by install () in fifo order.
8845 * this is important because of the `defined' special symbol used
8846 * in #if, and also if pushdef/popdef directives are ever implemented.
8848 * If LEN is >= 0, it is the length of the name.
8849 * Otherwise, compute the length by scanning the entire name.
8851 * If HASH is >= 0, it is the precomputed hash code.
8852 * Otherwise, compute the hash code.
8855 install (name, len, type, ivalue, value, hash)
8858 enum node_type type;
8863 register HASHNODE *hp;
8864 register int i, bucket;
8865 register U_CHAR *p, *q;
8869 while (is_idchar[*p])
8875 hash = hashf (name, len, HASHSIZE);
8877 i = sizeof (HASHNODE) + len + 1;
8878 hp = (HASHNODE *) xmalloc (i);
8880 hp->bucket_hdr = &hashtab[bucket];
8881 hp->next = hashtab[bucket];
8882 hashtab[bucket] = hp;
8884 if (hp->next != NULL)
8885 hp->next->prev = hp;
8888 if (hp->type == T_CONST)
8889 hp->value.ival = ivalue;
8891 hp->value.cpval = value;
8892 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
8895 for (i = 0; i < len; i++)
8902 * find the most recent hash node for name name (ending with first
8903 * non-identifier char) installed by install
8905 * If LEN is >= 0, it is the length of the name.
8906 * Otherwise, compute the length by scanning the entire name.
8908 * If HASH is >= 0, it is the precomputed hash code.
8909 * Otherwise, compute the hash code.
8912 lookup (name, len, hash)
8917 register U_CHAR *bp;
8918 register HASHNODE *bucket;
8921 for (bp = name; is_idchar[*bp]; bp++) ;
8926 hash = hashf (name, len, HASHSIZE);
8928 bucket = hashtab[hash];
8930 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
8932 bucket = bucket->next;
8938 * Delete a hash node. Some weirdness to free junk from macros.
8939 * More such weirdness will have to be added if you define more hash
8940 * types that need it.
8943 /* Note that the DEFINITION of a macro is removed from the hash table
8944 but its storage is not freed. This would be a storage leak
8945 except that it is not reasonable to keep undefining and redefining
8946 large numbers of macros many times.
8947 In any case, this is necessary, because a macro can be #undef'd
8948 in the middle of reading the arguments to a call to it.
8949 If #undef freed the DEFINITION, that would crash. */
8956 if (hp->prev != NULL)
8957 hp->prev->next = hp->next;
8958 if (hp->next != NULL)
8959 hp->next->prev = hp->prev;
8961 /* make sure that the bucket chain header that
8962 the deleted guy was on points to the right thing afterwards. */
8963 if (hp == *hp->bucket_hdr)
8964 *hp->bucket_hdr = hp->next;
8967 if (hp->type == T_MACRO) {
8968 DEFINITION *d = hp->value.defn;
8969 struct reflist *ap, *nextap;
8971 for (ap = d->pattern; ap != NULL; ap = nextap) {
8982 * return hash function on name. must be compatible with the one
8983 * computed a step at a time, elsewhere
8986 hashf (name, len, hashsize)
8987 register U_CHAR *name;
8994 r = HASHSTEP (r, *name++);
8996 return MAKE_POS (r) % hashsize;
9000 /* Dump the definition of a single macro HP to OF. */
9002 dump_single_macro (hp, of)
9003 register HASHNODE *hp;
9006 register DEFINITION *defn = hp->value.defn;
9012 /* Print the definition of the macro HP. */
9014 fprintf (of, "#define %s", hp->name);
9016 if (defn->nargs >= 0) {
9020 for (i = 0; i < defn->nargs; i++) {
9021 dump_arg_n (defn, i, of);
9022 if (i + 1 < defn->nargs)
9032 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9033 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9034 if (ap->nchars != 0)
9036 offset += ap->nchars;
9039 if (ap->raw_before && !concat)
9040 fprintf (of, " ## ");
9042 dump_arg_n (defn, ap->argno, of);
9043 if (ap->raw_after) {
9044 fprintf (of, " ## ");
9048 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9052 /* Dump all macro definitions as #defines to stdout. */
9059 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9060 register HASHNODE *hp;
9062 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9063 if (hp->type == T_MACRO)
9064 dump_single_macro (hp, stdout);
9069 /* Output to OF a substring of a macro definition.
9070 BASE is the beginning of the definition.
9071 Output characters START thru LENGTH.
9072 Discard newlines outside of strings, thus
9073 converting funny-space markers to ordinary spaces. */
9076 dump_defn_1 (base, start, length, of)
9082 U_CHAR *p = base + start;
9083 U_CHAR *limit = base + start + length;
9086 if (*p == '\"' || *p =='\'') {
9087 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9088 NULL_PTR, NULL_PTR);
9089 fwrite (p, p1 - p, 1, of);
9099 /* Print the name of argument number ARGNUM of macro definition DEFN
9101 Recall that DEFN->args.argnames contains all the arg names
9102 concatenated in reverse order with comma-space in between. */
9105 dump_arg_n (defn, argnum, of)
9110 register U_CHAR *p = defn->args.argnames;
9111 while (argnum + 1 < defn->nargs) {
9112 p = (U_CHAR *) index (p, ' ') + 1;
9116 while (*p && *p != ',') {
9122 /* Initialize syntactic classifications of characters. */
9125 initialize_char_syntax ()
9130 * Set up is_idchar and is_idstart tables. These should be
9131 * faster than saying (is_alpha (c) || c == '_'), etc.
9132 * Set up these things before calling any routines tthat
9135 for (i = 'a'; i <= 'z'; i++) {
9136 is_idchar[i - 'a' + 'A'] = 1;
9138 is_idstart[i - 'a' + 'A'] = 1;
9141 for (i = '0'; i <= '9'; i++)
9144 is_idstart['_'] = 1;
9145 is_idchar['$'] = dollars_in_ident;
9146 is_idstart['$'] = dollars_in_ident;
9148 /* horizontal space table */
9149 is_hor_space[' '] = 1;
9150 is_hor_space['\t'] = 1;
9151 is_hor_space['\v'] = 1;
9152 is_hor_space['\f'] = 1;
9153 is_hor_space['\r'] = 1;
9163 /* Initialize the built-in macros. */
9166 initialize_builtins (inp, outp)
9170 install ("__LINE__", -1, T_SPECLINE, 0, NULL_PTR, -1);
9171 install ("__DATE__", -1, T_DATE, 0, NULL_PTR, -1);
9172 install ("__FILE__", -1, T_FILE, 0, NULL_PTR, -1);
9173 install ("__BASE_FILE__", -1, T_BASE_FILE, 0, NULL_PTR, -1);
9174 install ("__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, 0, NULL_PTR, -1);
9175 install ("__VERSION__", -1, T_VERSION, 0, NULL_PTR, -1);
9176 #ifndef NO_BUILTIN_SIZE_TYPE
9177 install ("__SIZE_TYPE__", -1, T_SIZE_TYPE, 0, NULL_PTR, -1);
9179 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9180 install ("__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, 0, NULL_PTR, -1);
9182 install ("__WCHAR_TYPE__", -1, T_WCHAR_TYPE, 0, NULL_PTR, -1);
9183 install ("__USER_LABEL_PREFIX__",-1,T_USER_LABEL_PREFIX_TYPE,0,NULL_PTR, -1);
9184 install ("__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, 0, NULL_PTR, -1);
9185 install ("__TIME__", -1, T_TIME, 0, NULL_PTR, -1);
9187 install ("__STDC__", -1, T_CONST, STDC_VALUE, NULL_PTR, -1);
9189 install ("__OBJC__", -1, T_CONST, 1, NULL_PTR, -1);
9190 /* This is supplied using a -D by the compiler driver
9191 so that it is present only when truly compiling with GNU C. */
9192 /* install ("__GNUC__", -1, T_CONST, 2, NULL_PTR, -1); */
9196 char directive[2048];
9197 register struct directive *dp = &directive_table[0];
9198 struct tm *timebuf = timestamp ();
9200 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9201 instack[0].nominal_fname);
9202 output_line_command (inp, outp, 0, same_file);
9203 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9205 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9206 output_line_command (inp, outp, 0, same_file);
9207 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9209 #ifndef NO_BUILTIN_SIZE_TYPE
9210 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9211 output_line_command (inp, outp, 0, same_file);
9212 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9215 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9216 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9217 output_line_command (inp, outp, 0, same_file);
9218 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9221 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9222 output_line_command (inp, outp, 0, same_file);
9223 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9225 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9226 monthnames[timebuf->tm_mon],
9227 timebuf->tm_mday, timebuf->tm_year + 1900);
9228 output_line_command (inp, outp, 0, same_file);
9229 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9231 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9232 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9233 output_line_command (inp, outp, 0, same_file);
9234 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9238 sprintf (directive, " __STDC__ 1");
9239 output_line_command (inp, outp, 0, same_file);
9240 pass_thru_directive (directive, &directive[strlen (directive)],
9245 sprintf (directive, " __OBJC__ 1");
9246 output_line_command (inp, outp, 0, same_file);
9247 pass_thru_directive (directive, &directive[strlen (directive)],
9254 * process a given definition string, for initialization
9255 * If STR is just an identifier, define it with value 1.
9256 * If STR has anything after the identifier, then it should
9257 * be identifier=definition.
9261 make_definition (str, op)
9266 struct directive *kt;
9271 if (!is_idstart[*p]) {
9272 error ("malformed option `-D %s'", str);
9275 while (is_idchar[*++p])
9278 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9281 p = str; /* Error */
9284 buf = (U_CHAR *) alloca (p - buf + 4);
9285 strcpy ((char *)buf, str);
9286 strcat ((char *)buf, " 1");
9287 } else if (*p != '=') {
9288 error ("malformed option `-D %s'", str);
9292 /* Copy the entire option so we can modify it. */
9293 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9294 strncpy (buf, str, p - str);
9295 /* Change the = to a space. */
9297 /* Scan for any backslash-newline and remove it. */
9301 if (*p == '\"' || *p == '\'') {
9302 int unterminated = 0;
9303 U_CHAR *p1 = skip_quoted_string (p, p + strlen (p), 0,
9304 NULL_PTR, NULL_PTR, &unterminated);
9308 if (*p == '\\' && p[1] == '\n')
9312 } else if (*p == '\\' && p[1] == '\n')
9314 /* Change newline chars into newline-markers. */
9315 else if (*p == '\n')
9327 ip = &instack[++indepth];
9328 ip->nominal_fname = ip->fname = "*Initialization*";
9330 ip->buf = ip->bufp = buf;
9331 ip->length = strlen (buf);
9335 ip->if_stack = if_stack;
9336 ip->system_header_p = 0;
9338 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9341 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9342 do_define (buf, buf + strlen (buf), NULL_PTR, kt);
9346 /* JF, this does the work for the -U option */
9349 make_undef (str, op)
9354 struct directive *kt;
9356 ip = &instack[++indepth];
9357 ip->nominal_fname = ip->fname = "*undef*";
9359 ip->buf = ip->bufp = str;
9360 ip->length = strlen (str);
9364 ip->if_stack = if_stack;
9365 ip->system_header_p = 0;
9367 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9370 do_undef (str, str + strlen (str), op, kt);
9374 /* Process the string STR as if it appeared as the body of a #assert.
9375 OPTION is the option name for which STR was the argument. */
9378 make_assertion (option, str)
9383 struct directive *kt;
9384 U_CHAR *buf, *p, *q;
9386 /* Copy the entire option so we can modify it. */
9387 buf = (U_CHAR *) alloca (strlen (str) + 1);
9388 strcpy ((char *) buf, str);
9389 /* Scan for any backslash-newline and remove it. */
9392 if (*p == '\\' && p[1] == '\n')
9400 if (!is_idstart[*p]) {
9401 error ("malformed option `%s %s'", option, str);
9404 while (is_idchar[*++p])
9406 while (*p == ' ' || *p == '\t') p++;
9407 if (! (*p == 0 || *p == '(')) {
9408 error ("malformed option `%s %s'", option, str);
9412 ip = &instack[++indepth];
9413 ip->nominal_fname = ip->fname = "*Initialization*";
9415 ip->buf = ip->bufp = buf;
9416 ip->length = strlen (buf);
9420 ip->if_stack = if_stack;
9421 ip->system_header_p = 0;
9423 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9426 /* pass NULL as output ptr to do_define since we KNOW it never
9427 does any output.... */
9428 do_assert (buf, buf + strlen (buf) , NULL_PTR, kt);
9432 /* Append a chain of `struct file_name_list's
9433 to the end of the main include chain.
9434 FIRST is the beginning of the chain to append, and LAST is the end. */
9437 append_include_chain (first, last)
9438 struct file_name_list *first, *last;
9440 struct file_name_list *dir;
9442 if (!first || !last)
9448 last_include->next = first;
9450 if (first_bracket_include == 0)
9451 first_bracket_include = first;
9453 for (dir = first; ; dir = dir->next) {
9454 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9455 if (len > max_include_len)
9456 max_include_len = len;
9462 last_include = last;
9465 /* Add output to `deps_buffer' for the -M switch.
9466 STRING points to the text to be output.
9467 SPACER is ':' for targets, ' ' for dependencies, zero for text
9468 to be inserted literally. */
9471 deps_output (string, spacer)
9475 int size = strlen (string);
9480 #ifndef MAX_OUTPUT_COLUMNS
9481 #define MAX_OUTPUT_COLUMNS 72
9485 && (deps_column + size) > MAX_OUTPUT_COLUMNS)
9487 deps_output (" \\\n ", 0);
9491 if (deps_size + size + 8 > deps_allocated_size) {
9492 deps_allocated_size = (deps_size + size + 50) * 2;
9493 deps_buffer = (char *) xrealloc (deps_buffer, deps_allocated_size);
9495 if (spacer == ' ' && deps_column > 0)
9496 deps_buffer[deps_size++] = ' ';
9497 bcopy (string, &deps_buffer[deps_size], size);
9499 deps_column += size;
9501 deps_buffer[deps_size++] = ':';
9502 deps_buffer[deps_size] = 0;
9505 #if defined(USG) || defined(VMS)
9511 register unsigned length;
9513 while (length-- > 0)
9518 bcopy (b1, b2, length)
9521 register unsigned length;
9523 while (length-- > 0)
9528 bcmp (b1, b2, length) /* This could be a macro! */
9531 register unsigned length;
9533 while (length-- > 0)
9539 #endif /* not BSTRING */
9540 #endif /* USG or VMS */
9547 fprintf (stderr, "%s: ", progname);
9548 fprintf (stderr, str, arg);
9549 fprintf (stderr, "\n");
9550 exit (FAILURE_EXIT_CODE);
9553 /* More 'friendly' abort that prints the line and file.
9554 config.h can #define abort fancy_abort if you like that sort of thing. */
9559 fatal ("Internal gcc abort.");
9563 perror_with_name (name)
9566 fprintf (stderr, "%s: ", progname);
9567 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9572 pfatal_with_name (name)
9575 perror_with_name (name);
9579 exit (FAILURE_EXIT_CODE);
9583 /* Handler for SIGPIPE. */
9587 /* If this is missing, some compilers complain. */
9590 fatal ("output pipe has been closed");
9596 fatal ("Memory exhausted.");
9604 register char *ptr = (char *) malloc (size);
9605 if (ptr != 0) return (ptr);
9612 xrealloc (old, size)
9616 register char *ptr = (char *) realloc (old, size);
9617 if (ptr != 0) return (ptr);
9624 xcalloc (number, size)
9625 unsigned number, size;
9627 register unsigned total = number * size;
9628 register char *ptr = (char *) malloc (total);
9633 /* It's not too long, so loop, zeroing by longs.
9634 It must be safe because malloc values are always well aligned. */
9635 register long *zp = (long *) ptr;
9636 register long *zl = (long *) (ptr + total - 4);
9637 register int i = total - 4;
9656 unsigned size = strlen (input);
9657 char *output = xmalloc (size + 1);
9658 strcpy (output, input);
9662 /* Get the file-mode and data size of the file open on FD
9663 and store them in *MODE_POINTER and *SIZE_POINTER. */
9666 file_size_and_mode (fd, mode_pointer, size_pointer)
9669 long int *size_pointer;
9673 if (fstat (fd, &sbuf) < 0) return (-1);
9674 if (mode_pointer) *mode_pointer = sbuf.st_mode;
9675 if (size_pointer) *size_pointer = sbuf.st_size;
9680 output_dots (fd, depth)
9693 /* Under VMS we need to fix up the "include" specification
9694 filename so that everything following the 1st slash is
9695 changed into its correct VMS file specification. */
9698 hack_vms_include_specification (fname)
9701 register char *cp, *cp1, *cp2;
9702 int f, check_filename_before_returning, no_prefix_seen;
9705 check_filename_before_returning = 0;
9708 /* Ignore leading "./"s */
9709 while (fname[0] == '.' && fname[1] == '/') {
9710 strcpy (fname, fname+2);
9711 no_prefix_seen = 1; /* mark this for later */
9713 /* Look for the boundary between the VMS and UNIX filespecs */
9714 cp = rindex (fname, ']'); /* Look for end of dirspec. */
9715 if (cp == 0) cp = rindex (fname, '>'); /* ... Ditto */
9716 if (cp == 0) cp = rindex (fname, ':'); /* Look for end of devspec. */
9720 cp = index (fname, '/'); /* Look for the "/" */
9724 * Check if we have a vax-c style '#include filename'
9725 * and add the missing .h
9728 if (index(fname,'.') == 0)
9729 strcat(fname, ".h");
9731 if (index(cp,'.') == 0)
9735 cp2 = Local; /* initialize */
9737 /* We are trying to do a number of things here. First of all, we are
9738 trying to hammer the filenames into a standard format, such that later
9739 processing can handle them.
9741 If the file name contains something like [dir.], then it recognizes this
9742 as a root, and strips the ".]". Later processing will add whatever is
9743 needed to get things working properly.
9745 If no device is specified, then the first directory name is taken to be
9746 a device name (or a rooted logical). */
9748 /* See if we found that 1st slash */
9749 if (cp == 0) return; /* Nothing to do!!! */
9750 if (*cp != '/') return; /* Nothing to do!!! */
9751 /* Point to the UNIX filename part (which needs to be fixed!) */
9753 /* If the directory spec is not rooted, we can just copy
9754 the UNIX filename part and we are done */
9755 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
9756 if (cp[-2] != '.') {
9758 * The VMS part ends in a `]', and the preceding character is not a `.'.
9759 * We strip the `]', and then splice the two parts of the name in the
9760 * usual way. Given the default locations for include files in cccp.c,
9761 * we will only use this code if the user specifies alternate locations
9762 * with the /include (-I) switch on the command line. */
9763 cp -= 1; /* Strip "]" */
9764 cp1--; /* backspace */
9767 * The VMS part has a ".]" at the end, and this will not do. Later
9768 * processing will add a second directory spec, and this would be a syntax
9769 * error. Thus we strip the ".]", and thus merge the directory specs.
9770 * We also backspace cp1, so that it points to a '/'. This inhibits the
9771 * generation of the 000000 root directory spec (which does not belong here
9774 cp -= 2; /* Strip ".]" */
9775 cp1--; }; /* backspace */
9778 /* We drop in here if there is no VMS style directory specification yet.
9779 * If there is no device specification either, we make the first dir a
9780 * device and try that. If we do not do this, then we will be essentially
9781 * searching the users default directory (as if they did a #include "asdf.h").
9783 * Then all we need to do is to push a '[' into the output string. Later
9784 * processing will fill this in, and close the bracket.
9786 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
9787 *cp2++ = '['; /* Open the directory specification */
9790 /* at this point we assume that we have the device spec, and (at least
9791 the opening "[" for a directory specification. We may have directories
9792 specified already */
9794 /* If there are no other slashes then the filename will be
9795 in the "root" directory. Otherwise, we need to add
9796 directory specifications. */
9797 if (index (cp1, '/') == 0) {
9798 /* Just add "000000]" as the directory string */
9799 strcpy (cp2, "000000]");
9800 cp2 += strlen (cp2);
9801 check_filename_before_returning = 1; /* we might need to fool with this later */
9803 /* As long as there are still subdirectories to add, do them. */
9804 while (index (cp1, '/') != 0) {
9805 /* If this token is "." we can ignore it */
9806 if ((cp1[0] == '.') && (cp1[1] == '/')) {
9810 /* Add a subdirectory spec. Do not duplicate "." */
9811 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
9813 /* If this is ".." then the spec becomes "-" */
9814 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
9815 /* Add "-" and skip the ".." */
9820 /* Copy the subdirectory */
9821 while (*cp1 != '/') *cp2++= *cp1++;
9822 cp1++; /* Skip the "/" */
9824 /* Close the directory specification */
9825 if (cp2[-1] == '.') /* no trailing periods */
9829 /* Now add the filename */
9830 while (*cp1) *cp2++ = *cp1++;
9832 /* Now append it to the original VMS spec. */
9835 /* If we put a [000000] in the filename, try to open it first. If this fails,
9836 remove the [000000], and return that name. This provides flexibility
9837 to the user in that they can use both rooted and non-rooted logical names
9838 to point to the location of the file. */
9840 if (check_filename_before_returning && no_prefix_seen) {
9841 f = open (fname, O_RDONLY, 0666);
9843 /* The file name is OK as it is, so return it as is. */
9847 /* The filename did not work. Try to remove the [000000] from the name,
9849 cp = index (fname, '[');
9850 cp2 = index (fname, ']') + 1;
9851 strcpy (cp, cp2); /* this gets rid of it */
9859 /* These are the read/write replacement routines for
9860 VAX-11 "C". They make read/write behave enough
9861 like their UNIX counterparts that CCCP will work */
9864 read (fd, buf, size)
9869 #undef read /* Get back the REAL read routine */
9871 register int total = 0;
9873 /* Read until the buffer is exhausted */
9875 /* Limit each read to 32KB */
9876 i = (size > (32*1024)) ? (32*1024) : size;
9877 i = read (fd, buf, i);
9879 if (i == 0) return (total);
9882 /* Account for this read */
9891 write (fd, buf, size)
9896 #undef write /* Get back the REAL write routine */
9900 /* Limit individual writes to 32Kb */
9903 j = (i > (32*1024)) ? (32*1024) : i;
9904 if (write (fd, buf, j) < 0) return (-1);
9905 /* Account for the data written */
9912 /* The following wrapper functions supply additional arguments to the VMS
9913 I/O routines to optimize performance with file handling. The arguments
9915 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
9916 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
9917 "fop=tef"- Truncate unused portions of file when closing file.
9918 "shr=nil"- Disallow file sharing while file is open.
9922 freopen (fname, type, oldfile)
9927 #undef freopen /* Get back the REAL fopen routine */
9928 if (strcmp (type, "w") == 0)
9929 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
9930 return freopen (fname, type, oldfile, "mbc=16");
9938 #undef fopen /* Get back the REAL fopen routine */
9939 if (strcmp (type, "w") == 0)
9940 return fopen (fname, type, "mbc=16", "deq=64", "fop=tef", "shr=nil");
9941 return fopen (fname, type, "mbc=16");
9945 open (fname, flags, prot)
9950 #undef open /* Get back the REAL open routine */
9951 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
9954 /* Avoid run-time library bug, where copying M out of N+M characters with
9955 N >= 65535 results in VAXCRTL's strncat falling into an infinite loop.
9956 gcc-cpp exercises this particular bug. */
9959 strncat (dst, src, cnt)
9964 register char *d = dst, *s = (char *) src;
9965 register int n = cnt; /* convert to _signed_ type */
9967 while (*d) d++; /* advance to end */
9969 if (!(*d++ = *s++)) break;
9970 if (n < 0) *d = '\0';