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 ();
208 /* Forward declarations. */
215 #if defined(USG) || defined(VMS)
223 /* These functions are declared to return int instead of void since they
224 are going to be placed in a table and some old compilers have trouble with
225 pointers to functions returning void. */
227 static int do_define ();
228 static int do_line ();
229 static int do_include ();
230 static int do_undef ();
231 static int do_error ();
232 static int do_pragma ();
233 static int do_ident ();
235 static int do_xifdef ();
236 static int do_else ();
237 static int do_elif ();
238 static int do_endif ();
239 static int do_sccs ();
240 static int do_once ();
241 static int do_assert ();
242 static int do_unassert ();
243 static int do_warning ();
245 static void add_import ();
246 static void append_include_chain ();
247 static void deps_output ();
248 static void make_undef ();
249 static void make_definition ();
250 static void make_assertion ();
251 static void path_include ();
252 static void initialize_builtins ();
253 static void initialize_char_syntax ();
254 static void dump_arg_n ();
255 static void dump_defn_1 ();
256 static void delete_macro ();
257 static void trigraph_pcp ();
258 static void rescan ();
259 static void finclude ();
260 static void validate_else ();
261 static int comp_def_part ();
262 static void error_from_errno ();
263 static void error_with_line ();
265 void pedwarn_with_line ();
266 static void pedwarn_with_file_and_line ();
267 static void fatal ();
269 static void pfatal_with_name ();
270 static void perror_with_name ();
271 static void pipe_closed ();
272 static void print_containing_files ();
273 static int lookup_import ();
274 static int redundant_include_p ();
275 static is_system_include ();
276 static struct file_name_map *read_name_map ();
277 static char *read_filename_string ();
278 static int open_include_file ();
279 static int check_preconditions ();
280 static void pcfinclude ();
281 static void pcstring_used ();
282 static void write_output ();
283 static int check_macro_name ();
284 static int compare_defs ();
285 static int compare_token_lists ();
286 static int eval_if_expression ();
287 static int discard_comments ();
288 static int change_newlines ();
289 static int line_for_error ();
291 static int file_size_and_mode ();
293 static struct arglist *read_token_list ();
294 static void free_token_list ();
296 static struct hashnode *install ();
297 struct hashnode *lookup ();
299 static struct assertion_hashnode *assertion_install ();
300 static struct assertion_hashnode *assertion_lookup ();
302 static char *xrealloc ();
303 static char *xcalloc ();
304 static char *savestring ();
306 static void delete_assertion ();
307 static void macroexpand ();
308 static void dump_all_macros ();
309 static void conditional_skip ();
310 static void skip_if_group ();
311 static void output_line_command ();
313 /* Last arg to output_line_command. */
314 enum file_change_code {same_file, enter_file, leave_file};
316 static int grow_outbuf ();
317 static int handle_directive ();
318 static void memory_full ();
320 static U_CHAR *macarg1 ();
321 static char *macarg ();
323 static U_CHAR *skip_to_end_of_comment ();
324 static U_CHAR *skip_quoted_string ();
325 static U_CHAR *skip_paren_group ();
326 static char *quote_string ();
328 static char *check_precompiled ();
329 /* static struct macrodef create_definition (); [moved below] */
330 static void dump_single_macro ();
331 static void output_dots ();
333 #ifndef FAILURE_EXIT_CODE
334 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
337 #ifndef SUCCESS_EXIT_CODE
338 #define SUCCESS_EXIT_CODE 0 /* 0 means success on Unix. */
341 /* Name under which this program was invoked. */
343 static char *progname;
345 /* Nonzero means use extra default include directories for C++. */
347 static int cplusplus;
349 /* Nonzero means handle cplusplus style comments */
351 static int cplusplus_comments;
353 /* Nonzero means handle #import, for objective C. */
357 /* Nonzero means this is an assembly file, and allow
358 unknown directives, which could be comments. */
362 /* Current maximum length of directory names in the search path
363 for include files. (Altered as we get more of them.) */
365 static int max_include_len;
367 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
369 static int for_lint = 0;
371 /* Nonzero means copy comments into the output file. */
373 static int put_out_comments = 0;
375 /* Nonzero means don't process the ANSI trigraph sequences. */
377 static int no_trigraphs = 0;
379 /* Nonzero means print the names of included files rather than
380 the preprocessed output. 1 means just the #include "...",
381 2 means #include <...> as well. */
383 static int print_deps = 0;
385 /* Nonzero if missing .h files in -M output are assumed to be generated
386 files and not errors. */
388 static int print_deps_missing_files = 0;
390 /* Nonzero means print names of header files (-H). */
392 static int print_include_names = 0;
394 /* Nonzero means don't output line number information. */
396 static int no_line_commands;
398 /* Nonzero means output the text in failing conditionals,
399 inside #failed ... #endfailed. */
401 static int output_conditionals;
403 /* dump_only means inhibit output of the preprocessed text
404 and instead output the definitions of all user-defined
405 macros in a form suitable for use as input to cccp.
406 dump_names means pass #define and the macro name through to output.
407 dump_definitions means pass the whole definition (plus #define) through
410 static enum {dump_none, dump_only, dump_names, dump_definitions}
411 dump_macros = dump_none;
413 /* Nonzero means pass all #define and #undef directives which we actually
414 process through to the output stream. This feature is used primarily
415 to allow cc1 to record the #defines and #undefs for the sake of
416 debuggers which understand about preprocessor macros, but it may
417 also be useful with -E to figure out how symbols are defined, and
418 where they are defined. */
419 static int debug_output = 0;
421 /* Nonzero indicates special processing used by the pcp program. The
422 special effects of this mode are:
424 Inhibit all macro expansion, except those inside #if directives.
426 Process #define directives normally, and output their contents
429 Output preconditions to pcp_outfile indicating all the relevant
430 preconditions for use of this file in a later cpp run.
432 static FILE *pcp_outfile;
434 /* Nonzero means we are inside an IF during a -pcp run. In this mode
435 macro expansion is done, and preconditions are output for all macro
436 uses requiring them. */
437 static int pcp_inside_if;
439 /* Nonzero means never to include precompiled files.
440 This is 1 since there's no way now to make precompiled files,
441 so it's not worth testing for them. */
442 static int no_precomp = 1;
444 /* Nonzero means give all the error messages the ANSI standard requires. */
448 /* Nonzero means try to make failure to fit ANSI C an error. */
450 static int pedantic_errors;
452 /* Nonzero means don't print warning messages. -w. */
454 static int inhibit_warnings = 0;
456 /* Nonzero means warn if slash-star appears in a comment. */
458 static int warn_comments;
460 /* Nonzero means warn if a macro argument is (or would be)
461 stringified with -traditional. */
463 static int warn_stringify;
465 /* Nonzero means warn if there are any trigraphs. */
467 static int warn_trigraphs;
469 /* Nonzero means warn if #import is used. */
471 static int warn_import = 1;
473 /* Nonzero means turn warnings into errors. */
475 static int warnings_are_errors;
477 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
481 /* Nonzero causes output not to be done,
482 but directives such as #define that have side effects
485 static int no_output;
487 /* Nonzero means this file was included with a -imacros or -include
488 command line and should not be recorded as an include file. */
490 static int no_record_file;
492 /* Nonzero means that we have finished processing the command line options.
493 This flag is used to decide whether or not to issue certain errors
496 static int done_initializing = 0;
498 /* Line where a newline was first seen in a string constant. */
500 static int multiline_string_line = 0;
502 /* I/O buffer structure.
503 The `fname' field is nonzero for source files and #include files
504 and for the dummy text used for -D and -U.
505 It is zero for rescanning results of macro expansion
506 and for expanding macro arguments. */
507 #define INPUT_STACK_MAX 400
508 static struct file_buf {
510 /* Filename specified with #line command. */
512 /* Record where in the search path this file was found.
513 For #include_next. */
514 struct file_name_list *dir;
519 /* Macro that this level is the expansion of.
520 Included so that we can reenable the macro
521 at the end of this level. */
522 struct hashnode *macro;
523 /* Value of if_stack at start of this file.
524 Used to prohibit unmatched #endif (etc) in an include file. */
525 struct if_stack *if_stack;
526 /* Object to be freed at end of input at this level. */
528 /* True if this is a header file included using <FILENAME>. */
529 char system_header_p;
530 } instack[INPUT_STACK_MAX];
532 static int last_error_tick; /* Incremented each time we print it. */
533 static int input_file_stack_tick; /* Incremented when the status changes. */
535 /* Current nesting level of input sources.
536 `instack[indepth]' is the level currently being read. */
537 static int indepth = -1;
538 #define CHECK_DEPTH(code) \
539 if (indepth >= (INPUT_STACK_MAX - 1)) \
541 error_with_line (line_for_error (instack[indepth].lineno), \
542 "macro or `#include' recursion too deep"); \
546 /* Current depth in #include directives that use <...>. */
547 static int system_include_depth = 0;
549 typedef struct file_buf FILE_BUF;
551 /* The output buffer. Its LENGTH field is the amount of room allocated
552 for the buffer, not the number of chars actually present. To get
553 that, subtract outbuf.buf from outbuf.bufp. */
555 #define OUTBUF_SIZE 10 /* initial size of output buffer */
556 static FILE_BUF outbuf;
558 /* Grow output buffer OBUF points at
559 so it can hold at least NEEDED more chars. */
561 #define check_expand(OBUF, NEEDED) \
562 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
563 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
565 struct file_name_list
567 struct file_name_list *next;
569 /* If the following is nonzero, it is a macro name.
570 Don't include the file again if that macro is defined. */
571 U_CHAR *control_macro;
572 /* If the following is nonzero, it is a C-language system include
574 int c_system_include_path;
575 /* Mapping of file names for this directory. */
576 struct file_name_map *name_map;
577 /* Non-zero if name_map is valid. */
581 /* #include "file" looks in source file dir, then stack. */
582 /* #include <file> just looks in the stack. */
583 /* -I directories are added to the end, then the defaults are added. */
585 static struct default_include {
586 char *fname; /* The name of the directory. */
587 int cplusplus; /* Only look here if we're compiling C++. */
588 int cxx_aware; /* Includes in this directory don't need to
589 be wrapped in extern "C" when compiling
591 } include_defaults_array[]
592 #ifdef INCLUDE_DEFAULTS
596 /* Pick up GNU C++ specific include files. */
597 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
599 /* This is the dir for fixincludes. Put it just before
600 the files that we fix. */
601 { GCC_INCLUDE_DIR, 0, 0 },
602 /* For cross-compilation, this dir name is generated
603 automatically in Makefile.in. */
604 { CROSS_INCLUDE_DIR, 0, 0 },
605 /* This is another place that the target system's headers might be. */
606 { TOOL_INCLUDE_DIR, 0, 1 },
607 #else /* not CROSS_COMPILE */
608 /* This should be /usr/local/include and should come before
609 the fixincludes-fixed header files. */
610 { LOCAL_INCLUDE_DIR, 0, 1 },
611 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
612 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
613 { TOOL_INCLUDE_DIR, 0, 1 },
614 /* This is the dir for fixincludes. Put it just before
615 the files that we fix. */
616 { GCC_INCLUDE_DIR, 0, 0 },
617 /* Some systems have an extra dir of include files. */
618 #ifdef SYSTEM_INCLUDE_DIR
619 { SYSTEM_INCLUDE_DIR, 0, 0 },
621 { STANDARD_INCLUDE_DIR, 0, 0 },
622 #endif /* not CROSS_COMPILE */
625 #endif /* no INCLUDE_DEFAULTS */
627 /* The code looks at the defaults through this pointer, rather than through
628 the constant structure above. This pointer gets changed if an environment
629 variable specifies other defaults. */
630 static struct default_include *include_defaults = include_defaults_array;
632 static struct file_name_list *include = 0; /* First dir to search */
633 /* First dir to search for <file> */
634 /* This is the first element to use for #include <...>.
635 If it is 0, use the entire chain for such includes. */
636 static struct file_name_list *first_bracket_include = 0;
637 /* This is the first element in the chain that corresponds to
638 a directory of system header files. */
639 static struct file_name_list *first_system_include = 0;
640 static struct file_name_list *last_include = 0; /* Last in chain */
642 /* Chain of include directories to put at the end of the other chain. */
643 static struct file_name_list *after_include = 0;
644 static struct file_name_list *last_after_include = 0; /* Last in chain */
646 /* Chain to put at the start of the system include files. */
647 static struct file_name_list *before_system = 0;
648 static struct file_name_list *last_before_system = 0; /* Last in chain */
650 /* List of included files that contained #pragma once. */
651 static struct file_name_list *dont_repeat_files = 0;
653 /* List of other included files.
654 If ->control_macro if nonzero, the file had a #ifndef
655 around the entire contents, and ->control_macro gives the macro name. */
656 static struct file_name_list *all_include_files = 0;
658 /* Directory prefix that should replace `/usr' in the standard
659 include file directories. */
660 static char *include_prefix;
662 /* Global list of strings read in from precompiled files. This list
663 is kept in the order the strings are read in, with new strings being
664 added at the end through stringlist_tailp. We use this list to output
665 the strings at the end of the run.
667 static STRINGDEF *stringlist;
668 static STRINGDEF **stringlist_tailp = &stringlist;
671 /* Structure returned by create_definition */
672 typedef struct macrodef MACRODEF;
675 struct definition *defn;
680 static struct macrodef create_definition ();
683 /* Structure allocated for every #define. For a simple replacement
686 nargs = -1, the `pattern' list is null, and the expansion is just
687 the replacement text. Nargs = 0 means a functionlike macro with no args,
689 #define getchar() getc (stdin) .
690 When there are args, the expansion is the replacement text with the
691 args squashed out, and the reflist is a list describing how to
692 build the output from the input: e.g., "3 chars, then the 1st arg,
693 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
694 The chars here come from the expansion. Whatever is left of the
695 expansion after the last arg-occurrence is copied after that arg.
696 Note that the reflist can be arbitrarily long---
697 its length depends on the number of times the arguments appear in
698 the replacement text, not how many args there are. Example:
699 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
701 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
702 where (x, y) means (nchars, argno). */
704 typedef struct definition DEFINITION;
707 int length; /* length of expansion string */
708 int predefined; /* True if the macro was builtin or */
709 /* came from the command line */
711 int line; /* Line number of definition */
712 char *file; /* File of definition */
713 char rest_args; /* Nonzero if last arg. absorbs the rest */
715 struct reflist *next;
716 char stringify; /* nonzero if this arg was preceded by a
718 char raw_before; /* Nonzero if a ## operator before arg. */
719 char raw_after; /* Nonzero if a ## operator after arg. */
720 char rest_args; /* Nonzero if this arg. absorbs the rest */
721 int nchars; /* Number of literal chars to copy before
722 this arg occurrence. */
723 int argno; /* Number of arg to substitute (origin-0) */
726 /* Names of macro args, concatenated in reverse order
727 with comma-space between them.
728 The only use of this is that we warn on redefinition
729 if this differs between the old and new definitions. */
734 /* different kinds of things that can appear in the value field
735 of a hash node. Actually, this may be useless now. */
744 * special extension string that can be added to the last macro argument to
745 * allow it to absorb the "rest" of the arguments when expanded. Ex:
746 * #define wow(a, b...) process (b, a, b)
747 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
748 * { wow (one, two); } -> { process (two, one, two); }
749 * if this "rest_arg" is used with the concat token '##' and if it is not
750 * supplied then the token attached to with ## will not be outputted. Ex:
751 * #define wow (a, b...) process (b ## , a, ## b)
752 * { wow (1, 2); } -> { process (2, 1, 2); }
753 * { wow (one); } -> { process (one); {
755 static char rest_extension[] = "...";
756 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
758 /* The structure of a node in the hash table. The hash table
759 has entries for all tokens defined by #define commands (type T_MACRO),
760 plus some special tokens like __LINE__ (these each have their own
761 type, and the appropriate code is run when that type of node is seen.
762 It does not contain control words like "#define", which are recognized
763 by a separate piece of code. */
765 /* different flavors of hash nodes --- also used in keyword table */
767 T_DEFINE = 1, /* the `#define' keyword */
768 T_INCLUDE, /* the `#include' keyword */
769 T_INCLUDE_NEXT, /* the `#include_next' keyword */
770 T_IMPORT, /* the `#import' keyword */
771 T_IFDEF, /* the `#ifdef' keyword */
772 T_IFNDEF, /* the `#ifndef' keyword */
773 T_IF, /* the `#if' keyword */
774 T_ELSE, /* `#else' */
775 T_PRAGMA, /* `#pragma' */
776 T_ELIF, /* `#elif' */
777 T_UNDEF, /* `#undef' */
778 T_LINE, /* `#line' */
779 T_ERROR, /* `#error' */
780 T_WARNING, /* `#warning' */
781 T_ENDIF, /* `#endif' */
782 T_SCCS, /* `#sccs', used on system V. */
783 T_IDENT, /* `#ident', used on system V. */
784 T_ASSERT, /* `#assert', taken from system V. */
785 T_UNASSERT, /* `#unassert', taken from system V. */
786 T_SPECLINE, /* special symbol `__LINE__' */
787 T_DATE, /* `__DATE__' */
788 T_FILE, /* `__FILE__' */
789 T_BASE_FILE, /* `__BASE_FILE__' */
790 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
791 T_VERSION, /* `__VERSION__' */
792 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
793 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
794 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
795 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
796 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
797 T_TIME, /* `__TIME__' */
798 T_CONST, /* Constant value, used by `__STDC__' */
799 T_MACRO, /* macro defined by `#define' */
800 T_DISABLED, /* macro temporarily turned off for rescan */
801 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
802 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
803 T_UNUSED /* Used for something not defined. */
807 struct hashnode *next; /* double links for easy deletion */
808 struct hashnode *prev;
809 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
810 chain is kept, in case the node is the head
811 of the chain and gets deleted. */
812 enum node_type type; /* type of special token */
813 int length; /* length of token, for quick comparison */
814 U_CHAR *name; /* the actual name */
815 union hashval value; /* pointer to expansion, or whatever */
818 typedef struct hashnode HASHNODE;
820 /* Some definitions for the hash table. The hash function MUST be
821 computed as shown in hashf () below. That is because the rescan
822 loop computes the hash value `on the fly' for most tokens,
823 in order to avoid the overhead of a lot of procedure calls to
824 the hashf () function. Hashf () only exists for the sake of
825 politeness, for use when speed isn't so important. */
827 #define HASHSIZE 1403
828 static HASHNODE *hashtab[HASHSIZE];
829 #define HASHSTEP(old, c) ((old << 2) + c)
830 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
832 /* Symbols to predefine. */
834 #ifdef CPP_PREDEFINES
835 static char *predefs = CPP_PREDEFINES;
837 static char *predefs = "";
840 /* We let tm.h override the types used here, to handle trivial differences
841 such as the choice of unsigned int or long unsigned int for size_t.
842 When machines start needing nontrivial differences in the size type,
843 it would be best to do something here to figure out automatically
844 from other information what type to use. */
846 /* The string value for __SIZE_TYPE__. */
849 #define SIZE_TYPE "long unsigned int"
852 /* The string value for __PTRDIFF_TYPE__. */
855 #define PTRDIFF_TYPE "long int"
858 /* The string value for __WCHAR_TYPE__. */
861 #define WCHAR_TYPE "int"
863 char * wchar_type = WCHAR_TYPE;
866 /* The string value for __USER_LABEL_PREFIX__ */
868 #ifndef USER_LABEL_PREFIX
869 #define USER_LABEL_PREFIX ""
872 /* The string value for __REGISTER_PREFIX__ */
874 #ifndef REGISTER_PREFIX
875 #define REGISTER_PREFIX ""
878 /* In the definition of a #assert name, this structure forms
879 a list of the individual values asserted.
880 Each value is itself a list of "tokens".
881 These are strings that are compared by name. */
883 struct tokenlist_list {
884 struct tokenlist_list *next;
885 struct arglist *tokens;
888 struct assertion_hashnode {
889 struct assertion_hashnode *next; /* double links for easy deletion */
890 struct assertion_hashnode *prev;
891 /* also, a back pointer to this node's hash
892 chain is kept, in case the node is the head
893 of the chain and gets deleted. */
894 struct assertion_hashnode **bucket_hdr;
895 int length; /* length of token, for quick comparison */
896 U_CHAR *name; /* the actual name */
897 /* List of token-sequences. */
898 struct tokenlist_list *value;
901 typedef struct assertion_hashnode ASSERTION_HASHNODE;
903 /* Some definitions for the hash table. The hash function MUST be
904 computed as shown in hashf below. That is because the rescan
905 loop computes the hash value `on the fly' for most tokens,
906 in order to avoid the overhead of a lot of procedure calls to
907 the hashf function. hashf only exists for the sake of
908 politeness, for use when speed isn't so important. */
910 #define ASSERTION_HASHSIZE 37
911 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
913 /* Nonzero means inhibit macroexpansion of what seem to be
914 assertion tests, in rescan. For #if. */
915 static int assertions_flag;
917 /* `struct directive' defines one #-directive, including how to handle it. */
920 int length; /* Length of name */
921 int (*func)(); /* Function to handle directive */
922 char *name; /* Name of directive */
923 enum node_type type; /* Code which describes which directive. */
924 char angle_brackets; /* Nonzero => <...> is special. */
925 char traditional_comments; /* Nonzero: keep comments if -traditional. */
926 char pass_thru; /* Copy preprocessed directive to output file. */
929 /* Here is the actual list of #-directives, most-often-used first. */
931 static struct directive directive_table[] = {
932 { 6, do_define, "define", T_DEFINE, 0, 1},
933 { 2, do_if, "if", T_IF},
934 { 5, do_xifdef, "ifdef", T_IFDEF},
935 { 6, do_xifdef, "ifndef", T_IFNDEF},
936 { 5, do_endif, "endif", T_ENDIF},
937 { 4, do_else, "else", T_ELSE},
938 { 4, do_elif, "elif", T_ELIF},
939 { 4, do_line, "line", T_LINE},
940 { 7, do_include, "include", T_INCLUDE, 1},
941 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
942 { 6, do_include, "import", T_IMPORT, 1},
943 { 5, do_undef, "undef", T_UNDEF},
944 { 5, do_error, "error", T_ERROR},
945 { 7, do_warning, "warning", T_WARNING},
946 #ifdef SCCS_DIRECTIVE
947 { 4, do_sccs, "sccs", T_SCCS},
949 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
950 { 5, do_ident, "ident", T_IDENT},
951 { 6, do_assert, "assert", T_ASSERT},
952 { 8, do_unassert, "unassert", T_UNASSERT},
953 { -1, 0, "", T_UNUSED},
956 /* When a directive handler is called,
957 this points to the # that started the directive. */
958 U_CHAR *directive_start;
960 /* table to tell if char can be part of a C identifier. */
961 U_CHAR is_idchar[256];
962 /* table to tell if char can be first char of a c identifier. */
963 U_CHAR is_idstart[256];
964 /* table to tell if c is horizontal space. */
965 U_CHAR is_hor_space[256];
966 /* table to tell if c is horizontal or vertical space. */
967 static U_CHAR is_space[256];
969 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
970 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
972 static int errors = 0; /* Error counter for exit code */
974 /* Name of output file, for error messages. */
975 static char *out_fname;
977 /* Zero means dollar signs are punctuation.
978 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
979 This must be 0 for correct processing of this ANSI C program:
981 #define lose(b) foo (b)
984 static int dollars_in_ident;
985 #ifndef DOLLARS_IN_IDENTIFIERS
986 #define DOLLARS_IN_IDENTIFIERS 1
989 static FILE_BUF expand_to_temp_buffer ();
991 static DEFINITION *collect_expansion ();
993 /* Stack of conditionals currently in progress
994 (including both successful and failing conditionals). */
997 struct if_stack *next; /* for chaining to the next stack frame */
998 char *fname; /* copied from input when frame is made */
999 int lineno; /* similarly */
1000 int if_succeeded; /* true if a leg of this if-group
1001 has been passed through rescan */
1002 U_CHAR *control_macro; /* For #ifndef at start of file,
1003 this is the macro name tested. */
1004 enum node_type type; /* type of last directive seen in this group */
1006 typedef struct if_stack IF_STACK_FRAME;
1007 static IF_STACK_FRAME *if_stack = NULL;
1009 /* Buffer of -M output. */
1010 static char *deps_buffer;
1012 /* Number of bytes allocated in above. */
1013 static int deps_allocated_size;
1015 /* Number of bytes used. */
1016 static int deps_size;
1018 /* Number of bytes since the last newline. */
1019 static int deps_column;
1021 /* Nonzero means -I- has been seen,
1022 so don't look for #include "foo" the source-file directory. */
1023 static int ignore_srcdir;
1025 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1026 retrying if necessary. Return a negative value if an error occurs,
1027 otherwise return the actual number of bytes read,
1028 which must be LEN unless end-of-file was reached. */
1031 safe_read (desc, ptr, len)
1038 int nchars = read (desc, ptr, left);
1055 /* Write LEN bytes at PTR to descriptor DESC,
1056 retrying if necessary, and treating any real error as fatal. */
1059 safe_write (desc, ptr, len)
1065 int written = write (desc, ptr, len);
1072 pfatal_with_name (out_fname);
1090 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1091 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1092 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1093 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1094 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1096 /* Record the option used with each element of pend_assertions.
1097 This is preparation for supporting more than one option for making
1099 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1100 int inhibit_predefs = 0;
1101 int no_standard_includes = 0;
1102 int no_standard_cplusplus_includes = 0;
1103 int missing_newline = 0;
1105 /* Non-0 means don't output the preprocessed program. */
1106 int inhibit_output = 0;
1107 /* Non-0 means -v, so print the full set of include dirs. */
1110 /* File name which deps are being written to.
1111 This is 0 if deps are being written to stdout. */
1112 char *deps_file = 0;
1113 /* Fopen file mode to open deps_file with. */
1114 char *deps_mode = "a";
1115 /* Stream on which to print the dependency information. */
1116 FILE *deps_stream = 0;
1117 /* Target-name to write with the dependency information. */
1118 char *deps_target = 0;
1121 /* Get rid of any avoidable limit on stack size. */
1125 /* Set the stack limit huge so that alloca (particularly stringtab
1126 * in dbxread.c) does not fail. */
1127 getrlimit (RLIMIT_STACK, &rlim);
1128 rlim.rlim_cur = rlim.rlim_max;
1129 setrlimit (RLIMIT_STACK, &rlim);
1131 #endif /* RLIMIT_STACK defined */
1134 signal (SIGPIPE, pipe_closed);
1137 p = argv[0] + strlen (argv[0]);
1138 while (p != argv[0] && p[-1] != '/') --p;
1143 /* Remove directories from PROGNAME. */
1146 progname = savestring (argv[0]);
1148 if (!(s = rindex (progname, ']')))
1149 s = rindex (progname, ':');
1151 strcpy (progname, s+1);
1152 if (s = rindex (progname, '.'))
1160 /* Initialize is_idchar to allow $. */
1161 dollars_in_ident = 1;
1162 initialize_char_syntax ();
1163 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1165 no_line_commands = 0;
1167 dump_macros = dump_none;
1170 cplusplus_comments = 0;
1172 bzero ((char *) pend_files, argc * sizeof (char *));
1173 bzero ((char *) pend_defs, argc * sizeof (char *));
1174 bzero ((char *) pend_undefs, argc * sizeof (char *));
1175 bzero ((char *) pend_assertions, argc * sizeof (char *));
1176 bzero ((char *) pend_includes, argc * sizeof (char *));
1178 /* Process switches and find input file name. */
1180 for (i = 1; i < argc; i++) {
1181 if (argv[i][0] != '-') {
1182 if (out_fname != NULL)
1183 fatal ("Usage: %s [switches] input output", argv[0]);
1184 else if (in_fname != NULL)
1185 out_fname = argv[i];
1189 switch (argv[i][1]) {
1192 if (!strcmp (argv[i], "-include")) {
1194 fatal ("Filename missing after `-include' option");
1196 pend_includes[i] = argv[i+1], i++;
1198 if (!strcmp (argv[i], "-imacros")) {
1200 fatal ("Filename missing after `-imacros' option");
1202 pend_files[i] = argv[i+1], i++;
1204 if (!strcmp (argv[i], "-iprefix")) {
1206 fatal ("Filename missing after `-iprefix' option");
1208 include_prefix = argv[++i];
1210 if (!strcmp (argv[i], "-ifoutput")) {
1211 output_conditionals = 1;
1213 if (!strcmp (argv[i], "-isystem")) {
1214 struct file_name_list *dirtmp;
1217 fatal ("Filename missing after `-isystem' option");
1219 dirtmp = (struct file_name_list *)
1220 xmalloc (sizeof (struct file_name_list));
1222 dirtmp->control_macro = 0;
1223 dirtmp->c_system_include_path = 1;
1224 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1]) + 1);
1225 strcpy (dirtmp->fname, argv[++i]);
1226 dirtmp->got_name_map = 0;
1228 if (before_system == 0)
1229 before_system = dirtmp;
1231 last_before_system->next = dirtmp;
1232 last_before_system = dirtmp; /* Tail follows the last one */
1234 /* Add directory to end of path for includes,
1235 with the default prefix at the front of its name. */
1236 if (!strcmp (argv[i], "-iwithprefix")) {
1237 struct file_name_list *dirtmp;
1240 if (include_prefix != 0)
1241 prefix = include_prefix;
1243 prefix = savestring (GCC_INCLUDE_DIR);
1244 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1245 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1246 prefix[strlen (prefix) - 7] = 0;
1249 dirtmp = (struct file_name_list *)
1250 xmalloc (sizeof (struct file_name_list));
1251 dirtmp->next = 0; /* New one goes on the end */
1252 dirtmp->control_macro = 0;
1253 dirtmp->c_system_include_path = 0;
1255 fatal ("Directory name missing after `-iwithprefix' option");
1257 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1258 + strlen (prefix) + 1);
1259 strcpy (dirtmp->fname, prefix);
1260 strcat (dirtmp->fname, argv[++i]);
1261 dirtmp->got_name_map = 0;
1263 if (after_include == 0)
1264 after_include = dirtmp;
1266 last_after_include->next = dirtmp;
1267 last_after_include = dirtmp; /* Tail follows the last one */
1269 /* Add directory to main path for includes,
1270 with the default prefix at the front of its name. */
1271 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1272 struct file_name_list *dirtmp;
1275 if (include_prefix != 0)
1276 prefix = include_prefix;
1278 prefix = savestring (GCC_INCLUDE_DIR);
1279 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1280 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1281 prefix[strlen (prefix) - 7] = 0;
1284 dirtmp = (struct file_name_list *)
1285 xmalloc (sizeof (struct file_name_list));
1286 dirtmp->next = 0; /* New one goes on the end */
1287 dirtmp->control_macro = 0;
1288 dirtmp->c_system_include_path = 0;
1290 fatal ("Directory name missing after `-iwithprefixbefore' option");
1292 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1293 + strlen (prefix) + 1);
1294 strcpy (dirtmp->fname, prefix);
1295 strcat (dirtmp->fname, argv[++i]);
1296 dirtmp->got_name_map = 0;
1298 append_include_chain (dirtmp, dirtmp);
1300 /* Add directory to end of path for includes. */
1301 if (!strcmp (argv[i], "-idirafter")) {
1302 struct file_name_list *dirtmp;
1304 dirtmp = (struct file_name_list *)
1305 xmalloc (sizeof (struct file_name_list));
1306 dirtmp->next = 0; /* New one goes on the end */
1307 dirtmp->control_macro = 0;
1308 dirtmp->c_system_include_path = 0;
1310 fatal ("Directory name missing after `-idirafter' option");
1312 dirtmp->fname = argv[++i];
1313 dirtmp->got_name_map = 0;
1315 if (after_include == 0)
1316 after_include = dirtmp;
1318 last_after_include->next = dirtmp;
1319 last_after_include = dirtmp; /* Tail follows the last one */
1324 if (out_fname != NULL)
1325 fatal ("Output filename specified twice");
1327 fatal ("Filename missing after -o option");
1328 out_fname = argv[++i];
1329 if (!strcmp (out_fname, "-"))
1334 if (!strcmp (argv[i], "-pedantic"))
1336 else if (!strcmp (argv[i], "-pedantic-errors")) {
1338 pedantic_errors = 1;
1339 } else if (!strcmp (argv[i], "-pcp")) {
1342 fatal ("Filename missing after -pcp option");
1343 pcp_fname = argv[++i];
1345 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1346 ? fopen (pcp_fname, "w")
1347 : fdopen (dup (fileno (stdout)), "w"));
1348 if (pcp_outfile == 0)
1349 pfatal_with_name (pcp_fname);
1355 if (!strcmp (argv[i], "-traditional")) {
1357 if (dollars_in_ident > 0)
1358 dollars_in_ident = 1;
1359 } else if (!strcmp (argv[i], "-trigraphs")) {
1365 if (! strcmp (argv[i], "-lang-c"))
1366 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1367 if (! strcmp (argv[i], "-lang-c++"))
1368 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1369 if (! strcmp (argv[i], "-lang-c-c++-comments"))
1370 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1371 if (! strcmp (argv[i], "-lang-objc"))
1372 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1373 if (! strcmp (argv[i], "-lang-objc++"))
1374 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1375 if (! strcmp (argv[i], "-lang-asm"))
1377 if (! strcmp (argv[i], "-lint"))
1382 cplusplus = 1, cplusplus_comments = 1;
1386 inhibit_warnings = 1;
1390 if (!strcmp (argv[i], "-Wtrigraphs"))
1392 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1394 else if (!strcmp (argv[i], "-Wcomment"))
1396 else if (!strcmp (argv[i], "-Wno-comment"))
1398 else if (!strcmp (argv[i], "-Wcomments"))
1400 else if (!strcmp (argv[i], "-Wno-comments"))
1402 else if (!strcmp (argv[i], "-Wtraditional"))
1404 else if (!strcmp (argv[i], "-Wno-traditional"))
1406 else if (!strcmp (argv[i], "-Wimport"))
1408 else if (!strcmp (argv[i], "-Wno-import"))
1410 else if (!strcmp (argv[i], "-Werror"))
1411 warnings_are_errors = 1;
1412 else if (!strcmp (argv[i], "-Wno-error"))
1413 warnings_are_errors = 0;
1414 else if (!strcmp (argv[i], "-Wall"))
1422 /* The style of the choices here is a bit mixed.
1423 The chosen scheme is a hybrid of keeping all options in one string
1424 and specifying each option in a separate argument:
1425 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1426 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1427 -M[M][G][D file]. This is awkward to handle in specs, and is not
1429 /* ??? -MG must be specified in addition to one of -M or -MM.
1430 This can be relaxed in the future without breaking anything.
1431 The converse isn't true. */
1433 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1434 if (!strcmp (argv[i], "-MG"))
1436 print_deps_missing_files = 1;
1439 if (!strcmp (argv[i], "-M"))
1441 else if (!strcmp (argv[i], "-MM"))
1443 else if (!strcmp (argv[i], "-MD"))
1445 else if (!strcmp (argv[i], "-MMD"))
1447 /* For -MD and -MMD options, write deps on file named by next arg. */
1448 if (!strcmp (argv[i], "-MD")
1449 || !strcmp (argv[i], "-MMD")) {
1451 fatal ("Filename missing after %s option", argv[i]);
1453 deps_file = argv[i];
1456 /* For -M and -MM, write deps on standard output
1457 and suppress the usual output. */
1458 deps_stream = stdout;
1465 char *p = argv[i] + 2;
1468 /* Arg to -d specifies what parts of macros to dump */
1471 dump_macros = dump_only;
1475 dump_macros = dump_names;
1478 dump_macros = dump_definitions;
1486 if (argv[i][2] == '3')
1491 fprintf (stderr, "GNU CPP version %s", version_string);
1492 #ifdef TARGET_VERSION
1495 fprintf (stderr, "\n");
1500 print_include_names = 1;
1504 if (argv[i][2] != 0)
1505 pend_defs[i] = argv[i] + 2;
1506 else if (i + 1 == argc)
1507 fatal ("Macro name missing after -D option");
1509 i++, pend_defs[i] = argv[i];
1516 if (argv[i][2] != 0)
1518 else if (i + 1 == argc)
1519 fatal ("Assertion missing after -A option");
1523 if (!strcmp (p, "-")) {
1524 /* -A- eliminates all predefined macros and assertions.
1525 Let's include also any that were specified earlier
1526 on the command line. That way we can get rid of any
1527 that were passed automatically in from GCC. */
1529 inhibit_predefs = 1;
1530 for (j = 0; j < i; j++)
1531 pend_defs[j] = pend_assertions[j] = 0;
1533 pend_assertions[i] = p;
1534 pend_assertion_options[i] = "-A";
1539 case 'U': /* JF #undef something */
1540 if (argv[i][2] != 0)
1541 pend_undefs[i] = argv[i] + 2;
1542 else if (i + 1 == argc)
1543 fatal ("Macro name missing after -U option");
1545 pend_undefs[i] = argv[i+1], i++;
1549 put_out_comments = 1;
1552 case 'E': /* -E comes from cc -E; ignore it. */
1556 no_line_commands = 1;
1559 case '$': /* Don't include $ in identifiers. */
1560 dollars_in_ident = 0;
1563 case 'I': /* Add directory to path for includes. */
1565 struct file_name_list *dirtmp;
1567 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1569 /* Don't use any preceding -I directories for #include <...>. */
1570 first_bracket_include = 0;
1573 dirtmp = (struct file_name_list *)
1574 xmalloc (sizeof (struct file_name_list));
1575 dirtmp->next = 0; /* New one goes on the end */
1576 dirtmp->control_macro = 0;
1577 dirtmp->c_system_include_path = 0;
1578 if (argv[i][2] != 0)
1579 dirtmp->fname = argv[i] + 2;
1580 else if (i + 1 == argc)
1581 fatal ("Directory name missing after -I option");
1583 dirtmp->fname = argv[++i];
1584 dirtmp->got_name_map = 0;
1585 append_include_chain (dirtmp, dirtmp);
1591 if (!strcmp (argv[i], "-nostdinc"))
1592 /* -nostdinc causes no default include directories.
1593 You must specify all include-file directories with -I. */
1594 no_standard_includes = 1;
1595 else if (!strcmp (argv[i], "-nostdinc++"))
1596 /* -nostdinc++ causes no default C++-specific include directories. */
1597 no_standard_cplusplus_includes = 1;
1598 else if (!strcmp (argv[i], "-noprecomp"))
1603 /* Sun compiler passes undocumented switch "-undef".
1604 Let's assume it means to inhibit the predefined symbols. */
1605 inhibit_predefs = 1;
1608 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1609 if (in_fname == NULL) {
1612 } else if (out_fname == NULL) {
1615 } /* else fall through into error */
1618 fatal ("Invalid option `%s'", argv[i]);
1623 /* Add dirs from CPATH after dirs from -I. */
1624 /* There seems to be confusion about what CPATH should do,
1625 so for the moment it is not documented. */
1626 /* Some people say that CPATH should replace the standard include dirs,
1627 but that seems pointless: it comes before them, so it overrides them
1629 p = (char *) getenv ("CPATH");
1630 if (p != 0 && ! no_standard_includes)
1633 /* Now that dollars_in_ident is known, initialize is_idchar. */
1634 initialize_char_syntax ();
1636 /* Initialize output buffer */
1638 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1639 outbuf.bufp = outbuf.buf;
1640 outbuf.length = OUTBUF_SIZE;
1642 /* Do partial setup of input buffer for the sake of generating
1643 early #line directives (when -g is in effect). */
1645 fp = &instack[++indepth];
1646 if (in_fname == NULL)
1648 fp->nominal_fname = fp->fname = in_fname;
1651 /* In C++, wchar_t is a distinct basic type, and we can expect
1652 __wchar_t to be defined by cc1plus. */
1654 wchar_type = "__wchar_t";
1656 /* Install __LINE__, etc. Must follow initialize_char_syntax
1657 and option processing. */
1658 initialize_builtins (fp, &outbuf);
1660 /* Do standard #defines and assertions
1661 that identify system and machine type. */
1663 if (!inhibit_predefs) {
1664 char *p = (char *) alloca (strlen (predefs) + 1);
1665 strcpy (p, predefs);
1668 while (*p == ' ' || *p == '\t')
1670 /* Handle -D options. */
1671 if (p[0] == '-' && p[1] == 'D') {
1673 while (*p && *p != ' ' && *p != '\t')
1678 output_line_command (fp, &outbuf, 0, same_file);
1679 make_definition (q, &outbuf);
1680 while (*p == ' ' || *p == '\t')
1682 } else if (p[0] == '-' && p[1] == 'A') {
1683 /* Handle -A options (assertions). */
1692 past_name = assertion;
1693 /* Locate end of name. */
1694 while (*past_name && *past_name != ' '
1695 && *past_name != '\t' && *past_name != '(')
1697 /* Locate `(' at start of value. */
1699 while (*value && (*value == ' ' || *value == '\t'))
1701 if (*value++ != '(')
1703 while (*value && (*value == ' ' || *value == '\t'))
1706 /* Locate end of value. */
1707 while (*past_value && *past_value != ' '
1708 && *past_value != '\t' && *past_value != ')')
1710 termination = past_value;
1711 while (*termination && (*termination == ' ' || *termination == '\t'))
1713 if (*termination++ != ')')
1715 if (*termination && *termination != ' ' && *termination != '\t')
1717 /* Temporarily null-terminate the value. */
1718 save_char = *termination;
1719 *termination = '\0';
1720 /* Install the assertion. */
1721 make_assertion ("-A", assertion);
1722 *termination = (char) save_char;
1724 while (*p == ' ' || *p == '\t')
1732 /* Now handle the command line options. */
1734 /* Do -U's, -D's and -A's in the order they were seen. */
1735 for (i = 1; i < argc; i++) {
1736 if (pend_undefs[i]) {
1738 output_line_command (fp, &outbuf, 0, same_file);
1739 make_undef (pend_undefs[i], &outbuf);
1743 output_line_command (fp, &outbuf, 0, same_file);
1744 make_definition (pend_defs[i], &outbuf);
1746 if (pend_assertions[i])
1747 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1750 done_initializing = 1;
1752 { /* read the appropriate environment variable and if it exists
1753 replace include_defaults with the listed path. */
1755 switch ((objc << 1) + cplusplus)
1758 epath = getenv ("C_INCLUDE_PATH");
1761 epath = getenv ("CPLUS_INCLUDE_PATH");
1764 epath = getenv ("OBJC_INCLUDE_PATH");
1767 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1770 /* If the environment var for this language is set,
1771 add to the default list of include directories. */
1773 char *nstore = (char *) alloca (strlen (epath) + 2);
1775 char *startp, *endp;
1777 for (num_dirs = 1, startp = epath; *startp; startp++)
1778 if (*startp == PATH_SEPARATOR)
1781 = (struct default_include *) xmalloc ((num_dirs
1782 * sizeof (struct default_include))
1783 + sizeof (include_defaults_array));
1784 startp = endp = epath;
1787 /* Handle cases like c:/usr/lib:d:/gcc/lib */
1788 if ((*endp == PATH_SEPARATOR
1789 #if 0 /* Obsolete, now that we use semicolons as the path separator. */
1791 && (endp-startp != 1 || !isalpha (*startp))
1796 strncpy (nstore, startp, endp-startp);
1798 strcpy (nstore, ".");
1800 nstore[endp-startp] = '\0';
1802 include_defaults[num_dirs].fname = savestring (nstore);
1803 include_defaults[num_dirs].cplusplus = cplusplus;
1804 include_defaults[num_dirs].cxx_aware = 1;
1808 endp = startp = endp + 1;
1812 /* Put the usual defaults back in at the end. */
1813 bcopy ((char *) include_defaults_array,
1814 (char *) &include_defaults[num_dirs],
1815 sizeof (include_defaults_array));
1819 append_include_chain (before_system, last_before_system);
1820 first_system_include = before_system;
1822 /* Unless -fnostdinc,
1823 tack on the standard include file dirs to the specified list */
1824 if (!no_standard_includes) {
1825 struct default_include *p = include_defaults;
1826 char *specd_prefix = include_prefix;
1827 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1828 int default_len = 0;
1829 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1830 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1831 default_len = strlen (default_prefix) - 7;
1832 default_prefix[default_len] = 0;
1834 /* Search "translated" versions of GNU directories.
1835 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1836 if (specd_prefix != 0 && default_len != 0)
1837 for (p = include_defaults; p->fname; p++) {
1838 /* Some standard dirs are only for C++. */
1839 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1840 /* Does this dir start with the prefix? */
1841 if (!strncmp (p->fname, default_prefix, default_len)) {
1842 /* Yes; change prefix and add to search list. */
1843 struct file_name_list *new
1844 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1845 int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
1846 char *str = (char *) xmalloc (this_len + 1);
1847 strcpy (str, specd_prefix);
1848 strcat (str, p->fname + default_len);
1850 new->control_macro = 0;
1851 new->c_system_include_path = !p->cxx_aware;
1852 new->got_name_map = 0;
1853 append_include_chain (new, new);
1854 if (first_system_include == 0)
1855 first_system_include = new;
1859 /* Search ordinary names for GNU include directories. */
1860 for (p = include_defaults; p->fname; p++) {
1861 /* Some standard dirs are only for C++. */
1862 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1863 struct file_name_list *new
1864 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1865 new->control_macro = 0;
1866 new->c_system_include_path = !p->cxx_aware;
1867 new->fname = p->fname;
1868 new->got_name_map = 0;
1869 append_include_chain (new, new);
1870 if (first_system_include == 0)
1871 first_system_include = new;
1876 /* Tack the after_include chain at the end of the include chain. */
1877 append_include_chain (after_include, last_after_include);
1878 if (first_system_include == 0)
1879 first_system_include = after_include;
1881 /* With -v, print the list of dirs to search. */
1883 struct file_name_list *p;
1884 fprintf (stderr, "#include \"...\" search starts here:\n");
1885 for (p = include; p; p = p->next) {
1886 if (p == first_bracket_include)
1887 fprintf (stderr, "#include <...> search starts here:\n");
1888 fprintf (stderr, " %s\n", p->fname);
1890 fprintf (stderr, "End of search list.\n");
1893 /* Scan the -imacros files before the main input.
1894 Much like #including them, but with no_output set
1895 so that only their macro definitions matter. */
1897 no_output++; no_record_file++;
1898 for (i = 1; i < argc; i++)
1899 if (pend_files[i]) {
1900 int fd = open (pend_files[i], O_RDONLY, 0666);
1902 perror_with_name (pend_files[i]);
1903 return FAILURE_EXIT_CODE;
1905 finclude (fd, pend_files[i], &outbuf, 0, NULL_PTR);
1907 no_output--; no_record_file--;
1909 /* Copy the entire contents of the main input file into
1910 the stacked input buffer previously allocated for it. */
1912 /* JF check for stdin */
1913 if (in_fname == NULL || *in_fname == 0) {
1916 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
1919 /* -MG doesn't select the form of output and must be specified with one of
1920 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
1921 inhibit compilation. */
1922 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
1923 fatal ("-MG must be specified with one of -M or -MM");
1925 /* Either of two environment variables can specify output of deps.
1926 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1927 where OUTPUT_FILE is the file to write deps info to
1928 and DEPS_TARGET is the target to mention in the deps. */
1931 && (getenv ("SUNPRO_DEPENDENCIES") != 0
1932 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
1933 char *spec = getenv ("DEPENDENCIES_OUTPUT");
1938 spec = getenv ("SUNPRO_DEPENDENCIES");
1945 /* Find the space before the DEPS_TARGET, if there is one. */
1946 /* This should use index. (mrs) */
1947 while (*s != 0 && *s != ' ') s++;
1949 deps_target = s + 1;
1950 output_file = (char *) xmalloc (s - spec + 1);
1951 bcopy (spec, output_file, s - spec);
1952 output_file[s - spec] = 0;
1959 deps_file = output_file;
1963 /* For -M, print the expected object file name
1964 as the target of this Make-rule. */
1966 deps_allocated_size = 200;
1967 deps_buffer = (char *) xmalloc (deps_allocated_size);
1973 deps_output (deps_target, ':');
1974 } else if (*in_fname == 0) {
1975 deps_output ("-", ':');
1980 /* Discard all directory prefixes from filename. */
1981 if ((q = rindex (in_fname, '/')) != NULL)
1986 /* Copy remainder to mungable area. */
1987 p = (char *) alloca (strlen(q) + 8);
1990 /* Output P, but remove known suffixes. */
1994 && p[len - 2] == '.'
1995 && index("cCsSm", p[len - 1]))
1998 && p[len - 3] == '.'
1999 && p[len - 2] == 'c'
2000 && p[len - 1] == 'c')
2003 && p[len - 4] == '.'
2004 && p[len - 3] == 'c'
2005 && p[len - 2] == 'x'
2006 && p[len - 1] == 'x')
2009 && p[len - 4] == '.'
2010 && p[len - 3] == 'c'
2011 && p[len - 2] == 'p'
2012 && p[len - 1] == 'p')
2015 /* Supply our own suffix. */
2022 deps_output (p, ':');
2023 deps_output (in_fname, ' ');
2027 file_size_and_mode (f, &st_mode, &st_size);
2028 fp->nominal_fname = fp->fname = in_fname;
2030 fp->system_header_p = 0;
2031 /* JF all this is mine about reading pipes and ttys */
2032 if (! S_ISREG (st_mode)) {
2033 /* Read input from a file that is not a normal disk file.
2034 We cannot preallocate a buffer with the correct size,
2035 so we must read in the file a piece at the time and make it bigger. */
2042 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2044 cnt = safe_read (f, fp->buf + size, bsize - size);
2045 if (cnt < 0) goto perror; /* error! */
2047 if (size != bsize) break; /* End of file */
2049 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2053 /* Read a file whose size we can determine in advance.
2054 For the sake of VMS, st_size is just an upper bound. */
2055 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
2056 fp->length = safe_read (f, fp->buf, st_size);
2057 if (fp->length < 0) goto perror;
2060 fp->if_stack = if_stack;
2062 /* Make sure data ends with a newline. And put a null after it. */
2064 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2065 /* Backslash-newline at end is not good enough. */
2066 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2067 fp->buf[fp->length++] = '\n';
2068 missing_newline = 1;
2070 fp->buf[fp->length] = '\0';
2072 /* Unless inhibited, convert trigraphs in the input. */
2077 /* Now that we know the input file is valid, open the output. */
2079 if (!out_fname || !strcmp (out_fname, ""))
2080 out_fname = "stdout";
2081 else if (! freopen (out_fname, "w", stdout))
2082 pfatal_with_name (out_fname);
2084 output_line_command (fp, &outbuf, 0, same_file);
2086 /* Scan the -include files before the main input. */
2089 for (i = 1; i < argc; i++)
2090 if (pend_includes[i]) {
2091 int fd = open (pend_includes[i], O_RDONLY, 0666);
2093 perror_with_name (pend_includes[i]);
2094 return FAILURE_EXIT_CODE;
2096 finclude (fd, pend_includes[i], &outbuf, 0, NULL_PTR);
2100 /* Scan the input, processing macros and directives. */
2102 rescan (&outbuf, 0);
2104 if (missing_newline)
2107 if (pedantic && missing_newline)
2108 pedwarn ("file does not end in newline");
2110 /* Now we have processed the entire input
2111 Write whichever kind of output has been requested. */
2113 if (dump_macros == dump_only)
2115 else if (! inhibit_output) {
2120 /* Don't actually write the deps file if compilation has failed. */
2122 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2123 pfatal_with_name (deps_file);
2124 fputs (deps_buffer, deps_stream);
2125 putc ('\n', deps_stream);
2127 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2128 fatal ("I/O error on output");
2133 if (pcp_outfile && pcp_outfile != stdout
2134 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2135 fatal ("I/O error on `-pcp' output");
2137 if (ferror (stdout) || fclose (stdout) != 0)
2138 fatal ("I/O error on output");
2141 exit (FAILURE_EXIT_CODE);
2142 exit (SUCCESS_EXIT_CODE);
2145 pfatal_with_name (in_fname);
2149 /* Given a colon-separated list of file names PATH,
2150 add all the names to the search path for include files. */
2164 struct file_name_list *dirtmp;
2166 /* Find the end of this name. */
2167 while (*q != 0 && *q != PATH_SEPARATOR) q++;
2169 /* An empty name in the path stands for the current directory. */
2170 name = (char *) xmalloc (2);
2174 /* Otherwise use the directory that is named. */
2175 name = (char *) xmalloc (q - p + 1);
2176 bcopy (p, name, q - p);
2180 dirtmp = (struct file_name_list *)
2181 xmalloc (sizeof (struct file_name_list));
2182 dirtmp->next = 0; /* New one goes on the end */
2183 dirtmp->control_macro = 0;
2184 dirtmp->c_system_include_path = 0;
2185 dirtmp->fname = name;
2186 dirtmp->got_name_map = 0;
2187 append_include_chain (dirtmp, dirtmp);
2189 /* Advance past this name. */
2193 /* Skip the colon. */
2198 /* Return the address of the first character in S that equals C.
2199 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2200 Return 0 if there is no such character. Assume that C itself is not '\0'.
2201 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2202 but unfortunately memchr isn't autoconfigured yet. */
2211 char *q = index (s, c);
2213 return (U_CHAR *) q;
2225 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2226 before main CCCP processing. Name `pcp' is also in honor of the
2227 drugs the trigraph designers must have been on.
2229 Using an extra pass through the buffer takes a little extra time,
2230 but is infinitely less hairy than trying to handle trigraphs inside
2231 strings, etc. everywhere, and also makes sure that trigraphs are
2232 only translated in the top level of processing. */
2238 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2241 fptr = bptr = sptr = buf->buf;
2242 lptr = fptr + buf->length;
2243 while ((sptr = (U_CHAR *) index0 (sptr, '?', lptr - sptr)) != NULL) {
2280 len = sptr - fptr - 2;
2282 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2283 C, this will be memmove (). */
2284 if (bptr != fptr && len > 0)
2285 bcopy ((char *) fptr, (char *) bptr, len);
2291 len = buf->length - (fptr - buf->buf);
2292 if (bptr != fptr && len > 0)
2293 bcopy ((char *) fptr, (char *) bptr, len);
2294 buf->length -= fptr - bptr;
2295 buf->buf[buf->length] = '\0';
2296 if (warn_trigraphs && fptr != bptr)
2297 warning ("%d trigraph(s) encountered", (fptr - bptr) / 2);
2300 /* Move all backslash-newline pairs out of embarrassing places.
2301 Exchange all such pairs following BP
2302 with any potentially-embarrassing characters that follow them.
2303 Potentially-embarrassing characters are / and *
2304 (because a backslash-newline inside a comment delimiter
2305 would cause it not to be recognized). */
2311 register U_CHAR *p = bp;
2312 register int count = 0;
2314 /* First count the backslash-newline pairs here. */
2320 else if (p[1] == '\r' && p[2] == '\n')
2328 /* What follows the backslash-newlines is not embarrassing. */
2330 if (count == 0 || (*p != '/' && *p != '*'))
2333 /* Copy all potentially embarrassing characters
2334 that follow the backslash-newline pairs
2335 down to where the pairs originally started. */
2337 while (*p == '*' || *p == '/')
2340 /* Now write the same number of pairs after the embarrassing chars. */
2341 while (count-- > 0) {
2347 /* Like newline_fix but for use within a directive-name.
2348 Move any backslash-newlines up past any following symbol constituents. */
2351 name_newline_fix (bp)
2354 register U_CHAR *p = bp;
2355 register int count = 0;
2357 /* First count the backslash-newline pairs here. */
2362 else if (p[1] == '\r' && p[2] == '\n')
2370 /* What follows the backslash-newlines is not embarrassing. */
2372 if (count == 0 || !is_idchar[*p])
2375 /* Copy all potentially embarrassing characters
2376 that follow the backslash-newline pairs
2377 down to where the pairs originally started. */
2379 while (is_idchar[*p])
2382 /* Now write the same number of pairs after the embarrassing chars. */
2383 while (count-- > 0) {
2389 /* Look for lint commands in comments.
2391 When we come in here, ibp points into a comment. Limit is as one expects.
2392 scan within the comment -- it should start, after lwsp, with a lint command.
2393 If so that command is returned as a (constant) string.
2395 Upon return, any arg will be pointed to with argstart and will be
2396 arglen long. Note that we don't parse that arg since it will just
2397 be printed out again.
2401 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2402 register U_CHAR *ibp;
2403 register U_CHAR *limit;
2404 U_CHAR **argstart; /* point to command arg */
2405 int *arglen, *cmdlen; /* how long they are */
2408 register U_CHAR *numptr; /* temp for arg parsing */
2412 SKIP_WHITE_SPACE (ibp);
2414 if (ibp >= limit) return NULL;
2416 linsize = limit - ibp;
2418 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2419 if ((linsize >= 10) && !strncmp (ibp, "NOTREACHED", 10)) {
2421 return "NOTREACHED";
2423 if ((linsize >= 8) && !strncmp (ibp, "ARGSUSED", 8)) {
2427 if ((linsize >= 11) && !strncmp (ibp, "LINTLIBRARY", 11)) {
2429 return "LINTLIBRARY";
2431 if ((linsize >= 7) && !strncmp (ibp, "VARARGS", 7)) {
2433 ibp += 7; linsize -= 7;
2434 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2436 /* OK, read a number */
2437 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2439 *arglen = numptr - *argstart;
2446 * The main loop of the program.
2448 * Read characters from the input stack, transferring them to the
2451 * Macros are expanded and push levels on the input stack.
2452 * At the end of such a level it is popped off and we keep reading.
2453 * At the end of any other kind of level, we return.
2454 * #-directives are handled, except within macros.
2456 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2457 * and insert them when appropriate. This is set while scanning macro
2458 * arguments before substitution. It is zero when scanning for final output.
2459 * There are three types of Newline markers:
2460 * * Newline - follows a macro name that was not expanded
2461 * because it appeared inside an expansion of the same macro.
2462 * This marker prevents future expansion of that identifier.
2463 * When the input is rescanned into the final output, these are deleted.
2464 * These are also deleted by ## concatenation.
2465 * * Newline Space (or Newline and any other whitespace character)
2466 * stands for a place that tokens must be separated or whitespace
2467 * is otherwise desirable, but where the ANSI standard specifies there
2468 * is no whitespace. This marker turns into a Space (or whichever other
2469 * whitespace char appears in the marker) in the final output,
2470 * but it turns into nothing in an argument that is stringified with #.
2471 * Such stringified arguments are the only place where the ANSI standard
2472 * specifies with precision that whitespace may not appear.
2474 * During this function, IP->bufp is kept cached in IBP for speed of access.
2475 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2476 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2477 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2478 * explicitly, and before RECACHE, since RECACHE uses OBP.
2482 rescan (op, output_marks)
2486 /* Character being scanned in main loop. */
2489 /* Length of pending accumulated identifier. */
2490 register int ident_length = 0;
2492 /* Hash code of pending accumulated identifier. */
2493 register int hash = 0;
2495 /* Current input level (&instack[indepth]). */
2498 /* Pointer for scanning input. */
2499 register U_CHAR *ibp;
2501 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2502 register U_CHAR *limit;
2504 /* Pointer for storing output. */
2505 register U_CHAR *obp;
2507 /* REDO_CHAR is nonzero if we are processing an identifier
2508 after backing up over the terminating character.
2509 Sometimes we process an identifier without backing up over
2510 the terminating character, if the terminating character
2511 is not special. Backing up is done so that the terminating character
2512 will be dispatched on again once the identifier is dealt with. */
2515 /* 1 if within an identifier inside of which a concatenation
2516 marker (Newline -) has been seen. */
2517 int concatenated = 0;
2519 /* While scanning a comment or a string constant,
2520 this records the line it started on, for error messages. */
2523 /* Record position of last `real' newline. */
2524 U_CHAR *beg_of_line;
2526 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2529 do { ip->macro->type = T_MACRO; \
2530 if (ip->free_ptr) free (ip->free_ptr); \
2531 --indepth; } while (0)
2533 /* Reload `rescan's local variables that describe the current
2534 level of the input stack. */
2537 do { ip = &instack[indepth]; \
2539 limit = ip->buf + ip->length; \
2541 check_expand (op, limit - ibp); \
2543 obp = op->bufp; } while (0)
2545 if (no_output && instack[indepth].fname != 0)
2546 skip_if_group (&instack[indepth], 1, NULL);
2553 /* Our caller must always put a null after the end of
2554 the input at each input stack level. */
2564 if (*ibp == '\n' && !ip->macro) {
2565 /* At the top level, always merge lines ending with backslash-newline,
2566 even in middle of identifier. But do not merge lines in a macro,
2567 since backslash might be followed by a newline-space marker. */
2570 --obp; /* remove backslash from obuf */
2573 /* If ANSI, backslash is just another character outside a string. */
2576 /* Otherwise, backslash suppresses specialness of following char,
2577 so copy it here to prevent the switch from seeing it.
2578 But first get any pending identifier processed. */
2579 if (ident_length > 0)
2586 if (assertions_flag) {
2587 /* Copy #foo (bar lose) without macro expansion. */
2588 SKIP_WHITE_SPACE (ibp);
2589 while (is_idchar[*ibp])
2591 SKIP_WHITE_SPACE (ibp);
2594 skip_paren_group (ip);
2595 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2596 obp += ip->bufp - ibp;
2601 /* If this is expanding a macro definition, don't recognize
2602 preprocessor directives. */
2605 /* If this is expand_into_temp_buffer, recognize them
2606 only after an actual newline at this level,
2607 not at the beginning of the input level. */
2608 if (ip->fname == 0 && beg_of_line == ip->buf)
2614 /* # keyword: a # must be first nonblank char on the line */
2615 if (beg_of_line == 0)
2620 /* Scan from start of line, skipping whitespace, comments
2621 and backslash-newlines, and see if we reach this #.
2622 If not, this # is not special. */
2624 /* If -traditional, require # to be at beginning of line. */
2627 if (is_hor_space[*bp])
2629 else if (*bp == '\\' && bp[1] == '\n')
2631 else if (*bp == '/' && bp[1] == '*') {
2633 while (!(*bp == '*' && bp[1] == '/'))
2637 /* There is no point in trying to deal with C++ // comments here,
2638 because if there is one, then this # must be part of the
2639 comment and we would never reach here. */
2646 /* This # can start a directive. */
2648 --obp; /* Don't copy the '#' */
2652 if (! handle_directive (ip, op)) {
2656 /* Not a known directive: treat it as ordinary text.
2657 IP, OP, IBP, etc. have not been changed. */
2658 if (no_output && instack[indepth].fname) {
2659 /* If not generating expanded output,
2660 what we do with ordinary text is skip it.
2661 Discard everything until next # directive. */
2662 skip_if_group (&instack[indepth], 1, 0);
2667 ++obp; /* Copy the '#' after all */
2668 /* Don't expand an identifier that could be a macro directive.
2669 (Section 3.8.3 of the ANSI C standard) */
2670 SKIP_WHITE_SPACE (ibp);
2671 if (is_idstart[*ibp])
2674 while (is_idchar[*ibp])
2682 /* A # directive has been successfully processed. */
2683 /* If not generating expanded output, ignore everything until
2684 next # directive. */
2685 if (no_output && instack[indepth].fname)
2686 skip_if_group (&instack[indepth], 1, 0);
2692 case '\"': /* skip quoted string */
2694 /* A single quoted string is treated like a double -- some
2695 programs (e.g., troff) are perverse this way */
2700 start_line = ip->lineno;
2702 /* Skip ahead to a matching quote. */
2706 if (ip->macro != 0) {
2707 /* try harder: this string crosses a macro expansion boundary.
2708 This can happen naturally if -traditional.
2709 Otherwise, only -D can make a macro with an unmatched quote. */
2715 error_with_line (line_for_error (start_line),
2716 "unterminated string or character constant");
2717 error_with_line (multiline_string_line,
2718 "possible real start of unterminated constant");
2719 multiline_string_line = 0;
2728 /* Traditionally, end of line ends a string constant with no error.
2729 So exit the loop and record the new line. */
2735 error_with_line (line_for_error (start_line),
2736 "unterminated character constant");
2739 if (pedantic && multiline_string_line == 0) {
2740 pedwarn_with_line (line_for_error (start_line),
2741 "string constant runs past end of line");
2743 if (multiline_string_line == 0)
2744 multiline_string_line = ip->lineno - 1;
2751 /* Backslash newline is replaced by nothing at all,
2752 but keep the line counts correct. */
2757 /* ANSI stupidly requires that in \\ the second \
2758 is *not* prevented from combining with a newline. */
2759 while (*ibp == '\\' && ibp[1] == '\n') {
2778 if (*ibp == '\\' && ibp[1] == '\n')
2782 && !(cplusplus_comments && *ibp == '/'))
2790 /* C++ style comment... */
2791 start_line = ip->lineno;
2793 --ibp; /* Back over the slash */
2796 /* Comments are equivalent to spaces. */
2797 if (! put_out_comments)
2800 /* must fake up a comment here */
2805 U_CHAR *before_bp = ibp+2;
2807 while (ibp < limit) {
2808 if (ibp[-1] != '\\' && *ibp == '\n') {
2809 if (put_out_comments) {
2810 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2811 obp += ibp - before_bp;
2817 /* Copy the newline into the output buffer, in order to
2818 avoid the pain of a #line every time a multiline comment
2820 if (!put_out_comments)
2831 /* Ordinary C comment. Skip it, optionally copying it to output. */
2833 start_line = ip->lineno;
2835 ++ibp; /* Skip the star. */
2837 /* If this cpp is for lint, we peek inside the comments: */
2841 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2843 if (lintcmd != NULL) {
2845 check_expand (op, cmdlen + arglen + 14);
2847 /* I believe it is always safe to emit this newline: */
2849 bcopy ("#pragma lint ", (char *) obp, 13);
2851 bcopy (lintcmd, (char *) obp, cmdlen);
2856 bcopy (argbp, (char *) obp, arglen);
2860 /* OK, now bring us back to the state we were in before we entered
2861 this branch. We need #line because the #pragma's newline always
2862 messes up the line count. */
2864 output_line_command (ip, op, 0, same_file);
2865 check_expand (op, limit - ibp + 2);
2871 /* Comments are equivalent to spaces.
2872 Note that we already output the slash; we might not want it.
2873 For -traditional, a comment is equivalent to nothing. */
2874 if (! put_out_comments) {
2884 U_CHAR *before_bp = ibp;
2886 while (ibp < limit) {
2889 if (warn_comments && ibp < limit && *ibp == '*')
2890 warning ("`/*' within comment");
2893 if (*ibp == '\\' && ibp[1] == '\n')
2895 if (ibp >= limit || *ibp == '/')
2900 /* Copy the newline into the output buffer, in order to
2901 avoid the pain of a #line every time a multiline comment
2903 if (!put_out_comments)
2911 error_with_line (line_for_error (start_line),
2912 "unterminated comment");
2915 if (put_out_comments) {
2916 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2917 obp += ibp - before_bp;
2924 if (!dollars_in_ident)
2928 case '0': case '1': case '2': case '3': case '4':
2929 case '5': case '6': case '7': case '8': case '9':
2930 /* If digit is not part of identifier, it starts a number,
2931 which means that following letters are not an identifier.
2932 "0x5" does not refer to an identifier "x5".
2933 So copy all alphanumerics that follow without accumulating
2934 as an identifier. Periods also, for sake of "3.e7". */
2936 if (ident_length == 0) {
2937 while (ibp < limit) {
2938 while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
2943 /* ".." terminates a preprocessing number. This is useless for C
2944 code but useful for preprocessing other things. */
2945 if (!isalnum (c) && (c != '.' || *ibp == '.') && c != '_') {
2950 /* A sign can be part of a preprocessing number
2951 if it follows an e. */
2952 if (c == 'e' || c == 'E') {
2953 while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
2957 if (ibp < limit && (*ibp == '+' || *ibp == '-')) {
2959 /* But traditional C does not let the token go past the sign. */
2970 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
2971 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
2972 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
2973 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
2975 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
2976 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
2977 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
2978 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
2982 /* Compute step of hash function, to avoid a proc call on every token */
2983 hash = HASHSTEP (hash, c);
2987 if (ip->fname == 0 && *ibp == '-') {
2988 /* Newline - inhibits expansion of preceding token.
2989 If expanding a macro arg, we keep the newline -.
2990 In final output, it is deleted.
2991 We recognize Newline - in macro bodies and macro args. */
2992 if (! concatenated) {
2997 if (!output_marks) {
3000 /* If expanding a macro arg, keep the newline -. */
3006 /* If reprocessing a macro expansion, newline is a special marker. */
3007 else if (ip->macro != 0) {
3008 /* Newline White is a "funny space" to separate tokens that are
3009 supposed to be separate but without space between.
3010 Here White means any whitespace character.
3011 Newline - marks a recursive macro use that is not
3012 supposed to be expandable. */
3014 if (is_space[*ibp]) {
3015 /* Newline Space does not prevent expansion of preceding token
3016 so expand the preceding token and then come back. */
3017 if (ident_length > 0)
3020 /* If generating final output, newline space makes a space. */
3021 if (!output_marks) {
3023 /* And Newline Newline makes a newline, so count it. */
3024 if (obp[-1] == '\n')
3027 /* If expanding a macro arg, keep the newline space.
3028 If the arg gets stringified, newline space makes nothing. */
3031 } else abort (); /* Newline followed by something random? */
3035 /* If there is a pending identifier, handle it and come back here. */
3036 if (ident_length > 0)
3041 /* Update the line counts and output a #line if necessary. */
3044 if (ip->lineno != op->lineno) {
3046 output_line_command (ip, op, 1, same_file);
3047 check_expand (op, limit - ibp);
3052 /* Come here either after (1) a null character that is part of the input
3053 or (2) at the end of the input, because there is a null there. */
3056 /* Our input really contains a null character. */
3059 /* At end of a macro-expansion level, pop it and read next level. */
3060 if (ip->macro != 0) {
3063 /* If traditional, and we have an identifier that ends here,
3064 process it now, so we get the right error for recursion. */
3065 if (traditional && ident_length
3066 && ! is_idchar[*instack[indepth - 1].bufp]) {
3075 /* If we don't have a pending identifier,
3076 return at end of input. */
3077 if (ident_length == 0) {
3085 /* If we do have a pending identifier, just consider this null
3086 a special character and arrange to dispatch on it again.
3087 The second time, IDENT_LENGTH will be zero so we will return. */
3093 /* Handle the case of a character such as /, ', " or null
3094 seen following an identifier. Back over it so that
3095 after the identifier is processed the special char
3096 will be dispatched on again. */
3106 if (ident_length > 0) {
3107 register HASHNODE *hp;
3109 /* We have just seen an identifier end. If it's a macro, expand it.
3111 IDENT_LENGTH is the length of the identifier
3112 and HASH is its hash code.
3114 The identifier has already been copied to the output,
3115 so if it is a macro we must remove it.
3117 If REDO_CHAR is 0, the char that terminated the identifier
3118 has been skipped in the output and the input.
3119 OBP-IDENT_LENGTH-1 points to the identifier.
3120 If the identifier is a macro, we must back over the terminator.
3122 If REDO_CHAR is 1, the terminating char has already been
3123 backed over. OBP-IDENT_LENGTH points to the identifier. */
3125 if (!pcp_outfile || pcp_inside_if) {
3127 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3130 if (hp->length == ident_length) {
3131 int obufp_before_macroname;
3132 int op_lineno_before_macroname;
3133 register int i = ident_length;
3134 register U_CHAR *p = hp->name;
3135 register U_CHAR *q = obp - i;
3141 do { /* All this to avoid a strncmp () */
3146 /* We found a use of a macro name.
3147 see if the context shows it is a macro call. */
3149 /* Back up over terminating character if not already done. */
3155 /* Save this as a displacement from the beginning of the output
3156 buffer. We can not save this as a position in the output
3157 buffer, because it may get realloc'ed by RECACHE. */
3158 obufp_before_macroname = (obp - op->buf) - ident_length;
3159 op_lineno_before_macroname = op->lineno;
3161 if (hp->type == T_PCSTRING) {
3162 pcstring_used (hp); /* Mark the definition of this key
3163 as needed, ensuring that it
3165 break; /* Exit loop, since the key cannot have a
3166 definition any longer. */
3169 /* Record whether the macro is disabled. */
3170 disabled = hp->type == T_DISABLED;
3172 /* This looks like a macro ref, but if the macro was disabled,
3173 just copy its name and put in a marker if requested. */
3177 /* This error check caught useful cases such as
3178 #define foo(x,y) bar (x (y,0), y)
3181 error ("recursive use of macro `%s'", hp->name);
3185 check_expand (op, limit - ibp + 2);
3192 /* If macro wants an arglist, verify that a '(' follows.
3193 first skip all whitespace, copying it to the output
3194 after the macro name. Then, if there is no '(',
3195 decide this is not a macro call and leave things that way. */
3196 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3197 && hp->value.defn->nargs >= 0)
3199 U_CHAR *old_ibp = ibp;
3200 U_CHAR *old_obp = obp;
3201 int old_iln = ip->lineno;
3202 int old_oln = op->lineno;
3205 /* Scan forward over whitespace, copying it to the output. */
3206 if (ibp == limit && ip->macro != 0) {
3211 old_iln = ip->lineno;
3212 old_oln = op->lineno;
3214 /* A comment: copy it unchanged or discard it. */
3215 else if (*ibp == '/' && ibp+1 != limit && ibp[1] == '*') {
3216 if (put_out_comments) {
3219 } else if (! traditional) {
3223 while (ibp + 1 != limit
3224 && !(ibp[0] == '*' && ibp[1] == '/')) {
3225 /* We need not worry about newline-marks,
3226 since they are never found in comments. */
3228 /* Newline in a file. Count it. */
3232 if (put_out_comments)
3238 if (put_out_comments) {
3243 else if (is_space[*ibp]) {
3245 if (ibp[-1] == '\n') {
3246 if (ip->macro == 0) {
3247 /* Newline in a file. Count it. */
3250 } else if (!output_marks) {
3251 /* A newline mark, and we don't want marks
3252 in the output. If it is newline-hyphen,
3253 discard it entirely. Otherwise, it is
3254 newline-whitechar, so keep the whitechar. */
3264 /* A newline mark; copy both chars to the output. */
3272 /* It isn't a macro call.
3273 Put back the space that we just skipped. */
3276 ip->lineno = old_iln;
3277 op->lineno = old_oln;
3278 /* Exit the for loop. */
3283 /* This is now known to be a macro call.
3284 Discard the macro name from the output,
3285 along with any following whitespace just copied. */
3286 obp = op->buf + obufp_before_macroname;
3287 op->lineno = op_lineno_before_macroname;
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;
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;
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.
6785 eval_if_expression (buf, length)
6790 HASHNODE *save_defined;
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 buf = (U_CHAR *) alloca (p - buf + 4);
9279 strcpy ((char *)buf, str);
9280 strcat ((char *)buf, " 1");
9281 } else if (*p != '=') {
9282 error ("malformed option `-D %s'", str);
9286 /* Copy the entire option so we can modify it. */
9287 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9288 strncpy (buf, str, p - str);
9289 /* Change the = to a space. */
9291 /* Scan for any backslash-newline and remove it. */
9295 if (*p == '\"' || *p == '\'') {
9296 int unterminated = 0;
9297 U_CHAR *p1 = skip_quoted_string (p, p + strlen (p), 0,
9298 NULL_PTR, NULL_PTR, &unterminated);
9302 if (*p == '\\' && p[1] == '\n')
9306 } else if (*p == '\\' && p[1] == '\n')
9308 /* Change newline chars into newline-markers. */
9309 else if (*p == '\n')
9321 ip = &instack[++indepth];
9322 ip->nominal_fname = ip->fname = "*Initialization*";
9324 ip->buf = ip->bufp = buf;
9325 ip->length = strlen (buf);
9329 ip->if_stack = if_stack;
9330 ip->system_header_p = 0;
9332 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9335 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9336 do_define (buf, buf + strlen (buf), NULL_PTR, kt);
9340 /* JF, this does the work for the -U option */
9343 make_undef (str, op)
9348 struct directive *kt;
9350 ip = &instack[++indepth];
9351 ip->nominal_fname = ip->fname = "*undef*";
9353 ip->buf = ip->bufp = str;
9354 ip->length = strlen (str);
9358 ip->if_stack = if_stack;
9359 ip->system_header_p = 0;
9361 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9364 do_undef (str, str + strlen (str), op, kt);
9368 /* Process the string STR as if it appeared as the body of a #assert.
9369 OPTION is the option name for which STR was the argument. */
9372 make_assertion (option, str)
9377 struct directive *kt;
9378 U_CHAR *buf, *p, *q;
9380 /* Copy the entire option so we can modify it. */
9381 buf = (U_CHAR *) alloca (strlen (str) + 1);
9382 strcpy ((char *) buf, str);
9383 /* Scan for any backslash-newline and remove it. */
9386 if (*p == '\\' && p[1] == '\n')
9394 if (!is_idstart[*p]) {
9395 error ("malformed option `%s %s'", option, str);
9398 while (is_idchar[*++p])
9400 while (*p == ' ' || *p == '\t') p++;
9401 if (! (*p == 0 || *p == '(')) {
9402 error ("malformed option `%s %s'", option, str);
9406 ip = &instack[++indepth];
9407 ip->nominal_fname = ip->fname = "*Initialization*";
9409 ip->buf = ip->bufp = buf;
9410 ip->length = strlen (buf);
9414 ip->if_stack = if_stack;
9415 ip->system_header_p = 0;
9417 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9420 /* pass NULL as output ptr to do_define since we KNOW it never
9421 does any output.... */
9422 do_assert (buf, buf + strlen (buf) , NULL_PTR, kt);
9426 /* Append a chain of `struct file_name_list's
9427 to the end of the main include chain.
9428 FIRST is the beginning of the chain to append, and LAST is the end. */
9431 append_include_chain (first, last)
9432 struct file_name_list *first, *last;
9434 struct file_name_list *dir;
9436 if (!first || !last)
9442 last_include->next = first;
9444 if (first_bracket_include == 0)
9445 first_bracket_include = first;
9447 for (dir = first; ; dir = dir->next) {
9448 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9449 if (len > max_include_len)
9450 max_include_len = len;
9456 last_include = last;
9459 /* Add output to `deps_buffer' for the -M switch.
9460 STRING points to the text to be output.
9461 SPACER is ':' for targets, ' ' for dependencies, zero for text
9462 to be inserted literally. */
9465 deps_output (string, spacer)
9469 int size = strlen (string);
9474 #ifndef MAX_OUTPUT_COLUMNS
9475 #define MAX_OUTPUT_COLUMNS 72
9479 && (deps_column + size) > MAX_OUTPUT_COLUMNS)
9481 deps_output (" \\\n ", 0);
9485 if (deps_size + size + 8 > deps_allocated_size) {
9486 deps_allocated_size = (deps_size + size + 50) * 2;
9487 deps_buffer = (char *) xrealloc (deps_buffer, deps_allocated_size);
9489 if (spacer == ' ' && deps_column > 0)
9490 deps_buffer[deps_size++] = ' ';
9491 bcopy (string, &deps_buffer[deps_size], size);
9493 deps_column += size;
9495 deps_buffer[deps_size++] = ':';
9496 deps_buffer[deps_size] = 0;
9499 #if defined(USG) || defined(VMS)
9505 register unsigned length;
9507 while (length-- > 0)
9512 bcopy (b1, b2, length)
9515 register unsigned length;
9517 while (length-- > 0)
9522 bcmp (b1, b2, length) /* This could be a macro! */
9525 register unsigned length;
9527 while (length-- > 0)
9533 #endif /* not BSTRING */
9534 #endif /* USG or VMS */
9541 fprintf (stderr, "%s: ", progname);
9542 fprintf (stderr, str, arg);
9543 fprintf (stderr, "\n");
9544 exit (FAILURE_EXIT_CODE);
9547 /* More 'friendly' abort that prints the line and file.
9548 config.h can #define abort fancy_abort if you like that sort of thing. */
9553 fatal ("Internal gcc abort.");
9557 perror_with_name (name)
9560 fprintf (stderr, "%s: ", progname);
9561 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9566 pfatal_with_name (name)
9569 perror_with_name (name);
9573 exit (FAILURE_EXIT_CODE);
9577 /* Handler for SIGPIPE. */
9581 /* If this is missing, some compilers complain. */
9584 fatal ("output pipe has been closed");
9590 fatal ("Memory exhausted.");
9598 register char *ptr = (char *) malloc (size);
9599 if (ptr != 0) return (ptr);
9606 xrealloc (old, size)
9610 register char *ptr = (char *) realloc (old, size);
9611 if (ptr != 0) return (ptr);
9618 xcalloc (number, size)
9619 unsigned number, size;
9621 register unsigned total = number * size;
9622 register char *ptr = (char *) malloc (total);
9627 /* It's not too long, so loop, zeroing by longs.
9628 It must be safe because malloc values are always well aligned. */
9629 register long *zp = (long *) ptr;
9630 register long *zl = (long *) (ptr + total - 4);
9631 register int i = total - 4;
9650 unsigned size = strlen (input);
9651 char *output = xmalloc (size + 1);
9652 strcpy (output, input);
9656 /* Get the file-mode and data size of the file open on FD
9657 and store them in *MODE_POINTER and *SIZE_POINTER. */
9660 file_size_and_mode (fd, mode_pointer, size_pointer)
9663 long int *size_pointer;
9667 if (fstat (fd, &sbuf) < 0) return (-1);
9668 if (mode_pointer) *mode_pointer = sbuf.st_mode;
9669 if (size_pointer) *size_pointer = sbuf.st_size;
9674 output_dots (fd, depth)
9687 /* Under VMS we need to fix up the "include" specification
9688 filename so that everything following the 1st slash is
9689 changed into its correct VMS file specification. */
9692 hack_vms_include_specification (fname)
9695 register char *cp, *cp1, *cp2;
9696 int f, check_filename_before_returning, no_prefix_seen;
9699 check_filename_before_returning = 0;
9702 /* Ignore leading "./"s */
9703 while (fname[0] == '.' && fname[1] == '/') {
9704 strcpy (fname, fname+2);
9705 no_prefix_seen = 1; /* mark this for later */
9707 /* Look for the boundary between the VMS and UNIX filespecs */
9708 cp = rindex (fname, ']'); /* Look for end of dirspec. */
9709 if (cp == 0) cp = rindex (fname, '>'); /* ... Ditto */
9710 if (cp == 0) cp = rindex (fname, ':'); /* Look for end of devspec. */
9714 cp = index (fname, '/'); /* Look for the "/" */
9718 * Check if we have a vax-c style '#include filename'
9719 * and add the missing .h
9722 if (index(fname,'.') == 0)
9723 strcat(fname, ".h");
9725 if (index(cp,'.') == 0)
9729 cp2 = Local; /* initialize */
9731 /* We are trying to do a number of things here. First of all, we are
9732 trying to hammer the filenames into a standard format, such that later
9733 processing can handle them.
9735 If the file name contains something like [dir.], then it recognizes this
9736 as a root, and strips the ".]". Later processing will add whatever is
9737 needed to get things working properly.
9739 If no device is specified, then the first directory name is taken to be
9740 a device name (or a rooted logical). */
9742 /* See if we found that 1st slash */
9743 if (cp == 0) return; /* Nothing to do!!! */
9744 if (*cp != '/') return; /* Nothing to do!!! */
9745 /* Point to the UNIX filename part (which needs to be fixed!) */
9747 /* If the directory spec is not rooted, we can just copy
9748 the UNIX filename part and we are done */
9749 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
9750 if (cp[-2] != '.') {
9752 * The VMS part ends in a `]', and the preceding character is not a `.'.
9753 * We strip the `]', and then splice the two parts of the name in the
9754 * usual way. Given the default locations for include files in cccp.c,
9755 * we will only use this code if the user specifies alternate locations
9756 * with the /include (-I) switch on the command line. */
9757 cp -= 1; /* Strip "]" */
9758 cp1--; /* backspace */
9761 * The VMS part has a ".]" at the end, and this will not do. Later
9762 * processing will add a second directory spec, and this would be a syntax
9763 * error. Thus we strip the ".]", and thus merge the directory specs.
9764 * We also backspace cp1, so that it points to a '/'. This inhibits the
9765 * generation of the 000000 root directory spec (which does not belong here
9768 cp -= 2; /* Strip ".]" */
9769 cp1--; }; /* backspace */
9772 /* We drop in here if there is no VMS style directory specification yet.
9773 * If there is no device specification either, we make the first dir a
9774 * device and try that. If we do not do this, then we will be essentially
9775 * searching the users default directory (as if they did a #include "asdf.h").
9777 * Then all we need to do is to push a '[' into the output string. Later
9778 * processing will fill this in, and close the bracket.
9780 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
9781 *cp2++ = '['; /* Open the directory specification */
9784 /* at this point we assume that we have the device spec, and (at least
9785 the opening "[" for a directory specification. We may have directories
9786 specified already */
9788 /* If there are no other slashes then the filename will be
9789 in the "root" directory. Otherwise, we need to add
9790 directory specifications. */
9791 if (index (cp1, '/') == 0) {
9792 /* Just add "000000]" as the directory string */
9793 strcpy (cp2, "000000]");
9794 cp2 += strlen (cp2);
9795 check_filename_before_returning = 1; /* we might need to fool with this later */
9797 /* As long as there are still subdirectories to add, do them. */
9798 while (index (cp1, '/') != 0) {
9799 /* If this token is "." we can ignore it */
9800 if ((cp1[0] == '.') && (cp1[1] == '/')) {
9804 /* Add a subdirectory spec. Do not duplicate "." */
9805 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
9807 /* If this is ".." then the spec becomes "-" */
9808 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
9809 /* Add "-" and skip the ".." */
9814 /* Copy the subdirectory */
9815 while (*cp1 != '/') *cp2++= *cp1++;
9816 cp1++; /* Skip the "/" */
9818 /* Close the directory specification */
9819 if (cp2[-1] == '.') /* no trailing periods */
9823 /* Now add the filename */
9824 while (*cp1) *cp2++ = *cp1++;
9826 /* Now append it to the original VMS spec. */
9829 /* If we put a [000000] in the filename, try to open it first. If this fails,
9830 remove the [000000], and return that name. This provides flexibility
9831 to the user in that they can use both rooted and non-rooted logical names
9832 to point to the location of the file. */
9834 if (check_filename_before_returning && no_prefix_seen) {
9835 f = open (fname, O_RDONLY, 0666);
9837 /* The file name is OK as it is, so return it as is. */
9841 /* The filename did not work. Try to remove the [000000] from the name,
9843 cp = index (fname, '[');
9844 cp2 = index (fname, ']') + 1;
9845 strcpy (cp, cp2); /* this gets rid of it */
9853 /* These are the read/write replacement routines for
9854 VAX-11 "C". They make read/write behave enough
9855 like their UNIX counterparts that CCCP will work */
9858 read (fd, buf, size)
9863 #undef read /* Get back the REAL read routine */
9865 register int total = 0;
9867 /* Read until the buffer is exhausted */
9869 /* Limit each read to 32KB */
9870 i = (size > (32*1024)) ? (32*1024) : size;
9871 i = read (fd, buf, i);
9873 if (i == 0) return (total);
9876 /* Account for this read */
9885 write (fd, buf, size)
9890 #undef write /* Get back the REAL write routine */
9894 /* Limit individual writes to 32Kb */
9897 j = (i > (32*1024)) ? (32*1024) : i;
9898 if (write (fd, buf, j) < 0) return (-1);
9899 /* Account for the data written */
9906 /* The following wrapper functions supply additional arguments to the VMS
9907 I/O routines to optimize performance with file handling. The arguments
9909 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
9910 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
9911 "fop=tef"- Truncate unused portions of file when closing file.
9912 "shr=nil"- Disallow file sharing while file is open.
9916 freopen (fname, type, oldfile)
9921 #undef freopen /* Get back the REAL fopen routine */
9922 if (strcmp (type, "w") == 0)
9923 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
9924 return freopen (fname, type, oldfile, "mbc=16");
9932 #undef fopen /* Get back the REAL fopen routine */
9933 if (strcmp (type, "w") == 0)
9934 return fopen (fname, type, "mbc=16", "deq=64", "fop=tef", "shr=nil");
9935 return fopen (fname, type, "mbc=16");
9939 open (fname, flags, prot)
9944 #undef open /* Get back the REAL open routine */
9945 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
9948 /* Avoid run-time library bug, where copying M out of N+M characters with
9949 N >= 65535 results in VAXCRTL's strncat falling into an infinite loop.
9950 gcc-cpp exercises this particular bug. */
9953 strncat (dst, src, cnt)
9958 register char *d = dst, *s = (char *) src;
9959 register int n = cnt; /* convert to _signed_ type */
9961 while (*d) d++; /* advance to end */
9963 if (!(*d++ = *s++)) break;
9964 if (n < 0) *d = '\0';