1 /* Protoize program - Original version by Ron Guilmette at MCC.
3 Copyright (C) 1989, 1992 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* Any reasonable C++ compiler should have all of the same features
22 as __STDC__ plus more, so make sure that __STDC__ is defined if
23 __cplusplus is defined. */
25 #if defined(__cplusplus) && !defined(__STDC__)
27 #endif /* defined(__cplusplus) && !defined(__STDC__) */
29 #if defined(__GNUC__) || defined (__GNUG__)
30 #define VOLATILE volatile
43 /* Users are not supposed to use _POSIX_SOURCE to say the
44 system is a POSIX system. That is not what _POSIX_SOURCE means! -- rms */
45 /* If the user asked for POSIX via _POSIX_SOURCE, turn on POSIX code. */
46 #if defined(_POSIX_SOURCE) && !defined(POSIX)
51 #ifdef POSIX /* We should be able to define _POSIX_SOURCE unconditionally,
52 but some systems respond in buggy ways to it,
53 including SunOS 4.1.1. Which we don't classify as POSIX. */
54 /* In case this is a POSIX system with an ANSI C compiler,
55 ask for definition of all POSIX facilities. */
63 #include <sys/types.h>
73 /* Include getopt.h for the sake of getopt_long.
74 We don't need the declaration of getopt, and it could conflict
75 with something from a system header file, so effectively nullify that. */
76 #define getopt getopt_loser
80 extern char *sys_errlist[];
81 extern char *version_string;
83 /* Systems which are compatible only with POSIX 1003.1-1988 (but *not*
84 with POSIX 1003.1-1990), e.g. Ultrix 4.2, might not have
85 const qualifiers in the prototypes in the system include files.
86 Unfortunately, this can lead to GCC issuing lots of warnings for
87 calls to the following functions. To eliminate these warnings we
88 provide the following #defines. */
90 #define my_access(file,flag) access((char *)file, flag)
91 #define my_stat(file,pkt) stat((char *)file, pkt)
92 #define my_execvp(prog,argv) execvp((char *)prog, (char **)argv)
93 #define my_link(file1, file2) link((char *)file1, (char *)file2)
94 #define my_unlink(file) unlink((char *)file)
95 #define my_open(file, mode, flag) open((char *)file, mode, flag)
96 #define my_chmod(file, mode) chmod((char *)file, mode)
98 extern char *getpwd ();
100 /* Aliases for pointers to void.
101 These were made to facilitate compilation with old brain-dead DEC C
102 compilers which didn't properly grok `void*' types. */
105 typedef void * pointer_type;
106 typedef const void * const_pointer_type;
108 typedef char * pointer_type;
109 typedef char * const_pointer_type;
120 #else /* !defined(POSIX) */
122 #define R_OK 4 /* Test for Read permission */
123 #define W_OK 2 /* Test for Write permission */
124 #define X_OK 1 /* Test for eXecute permission */
125 #define F_OK 0 /* Test for existence of File */
130 /* Declaring stat or __flsbuf with a prototype
131 causes conflicts with system headers on some systems. */
134 extern VOLATILE void abort ();
138 #if 0 /* These conflict with stdio.h on some systems. */
139 extern int fprintf (FILE *, const char *, ...);
140 extern int printf (const char *, ...);
141 extern int open (const char *, int, ...);
144 extern pointer_type malloc ();
145 extern pointer_type realloc ();
150 extern int fflush ();
156 extern int unlink ();
157 extern int access ();
158 extern int execvp ();
160 extern int setjmp ();
163 extern void longjmp ();
166 extern char * strcat ();
167 extern int strcmp ();
168 extern char * strcpy ();
169 #if 0 /* size_t from sys/types.h may fail to match GCC.
170 If so, we would get a warning from this. */
171 extern size_t strlen ()
173 extern int strncmp ();
174 extern char * strncpy ();
175 extern char * rindex ();
177 /* Fork is not declared because the declaration caused a conflict
179 #if !(defined (USG) || defined (VMS))
181 #endif /* (defined (USG) || defined (VMS)) */
183 #endif /* !defined (POSIX) */
185 /* Look for these where the `const' qualifier is intentionally cast aside. */
189 /* Define a STRINGIFY macro that's right for ANSI or traditional C. */
192 #define STRINGIFY(STRING) #STRING
194 #define STRINGIFY(STRING) "STRING"
197 /* Define a default place to find the SYSCALLS.X file. */
199 #ifndef STD_PROTO_DIR
200 #define STD_PROTO_DIR "/usr/local/lib"
201 #endif /* !defined (STD_PROTO_DIR) */
203 /* Suffix of aux_info files. */
205 static const char * const aux_info_suffix = ".X";
207 /* String to attach to filenames for saved versions of original files. */
209 static const char * const save_suffix = ".save";
213 /* File name of the file which contains descriptions of standard system
214 routines. Note that we never actually do anything with this file per se,
215 but we do read in its corresponding aux_info file. */
217 static const char syscalls_filename[] = "SYSCALLS.c";
219 /* Default place to find the above file. */
221 static const char * const default_syscalls_dir = STD_PROTO_DIR;
223 /* Variable to hold the complete absolutized filename of the SYSCALLS.c.X
226 static char * syscalls_absolute_filename;
228 #endif /* !defined (UNPROTOIZE) */
230 /* Type of the structure that holds information about macro unexpansions. */
232 struct unexpansion_struct {
233 const char *expanded;
234 const char *contracted;
236 typedef struct unexpansion_struct unexpansion;
238 /* A table of conversions that may need to be made for some (stupid) older
239 operating systems where these types are preprocessor macros rather than
240 typedefs (as they really ought to be).
242 WARNING: The contracted forms must be as small (or smaller) as the
243 expanded forms, or else havoc will ensue. */
245 static const unexpansion unexpansions[] = {
246 { "struct _iobuf", "FILE" },
250 /* The number of "primary" slots in the hash tables for filenames and for
251 function names. This can be as big or as small as you like, except that
252 it must be a power of two. */
254 #define HASH_TABLE_SIZE (1 << 9)
256 /* Bit mask to use when computing hash values. */
258 static const int hash_mask = (HASH_TABLE_SIZE - 1);
260 /* Make a table of default system include directories
261 just as it is done in cccp.c. */
263 #ifndef STANDARD_INCLUDE_DIR
264 #define STANDARD_INCLUDE_DIR "/usr/include"
267 #ifndef LOCAL_INCLUDE_DIR
268 #define LOCAL_INCLUDE_DIR "/usr/local/include"
271 struct default_include { const char *fname; int cplusplus; } include_defaults[]
272 #ifdef INCLUDE_DEFAULTS
276 /* Pick up GNU C++ specific include files. */
277 { GPLUSPLUS_INCLUDE_DIR, 1},
278 { GCC_INCLUDE_DIR, 0},
280 /* For cross-compilation, this dir name is generated
281 automatically in Makefile.in. */
282 { CROSS_INCLUDE_DIR, 0 },
283 #else /* not CROSS_COMPILE */
284 { LOCAL_INCLUDE_DIR, 0},
285 /* Some systems have an extra dir of include files. */
286 #ifdef SYSTEM_INCLUDE_DIR
287 { SYSTEM_INCLUDE_DIR, 0},
289 { STANDARD_INCLUDE_DIR, 0},
290 #endif /* not CROSS_COMPILE */
293 #endif /* no INCLUDE_DEFAULTS */
295 /* Datatype for lists of directories or filenames. */
299 struct string_list *next;
302 /* List of directories in which files should be converted. */
304 struct string_list *directory_list;
306 /* List of file names which should not be converted.
307 A file is excluded if the end of its name, following a /,
308 matches one of the names in this list. */
310 struct string_list *exclude_list;
312 /* The name of the other style of variable-number-of-parameters functions
313 (i.e. the style that we want to leave unconverted because we don't yet
314 know how to convert them to this style. This string is used in warning
317 /* Also define here the string that we can search for in the parameter lists
318 taken from the .X files which will unambiguously indicate that we have
319 found a varargs style function. */
322 static const char * const other_var_style = "stdarg";
323 #else /* !defined (UNPROTOIZE) */
324 static const char * const other_var_style = "varargs";
325 /* Note that this is a string containing the expansion of va_alist.
326 But in `main' we discard all but the first token. */
327 static const char *varargs_style_indicator = STRINGIFY (va_alist);
328 #endif /* !defined (UNPROTOIZE) */
330 /* The following two types are used to create hash tables. In this program,
331 there are two hash tables which are used to store and quickly lookup two
332 different classes of strings. The first type of strings stored in the
333 first hash table are absolute filenames of files which protoize needs to
334 know about. The second type of strings (stored in the second hash table)
335 are function names. It is this second class of strings which really
336 inspired the use of the hash tables, because there may be a lot of them. */
338 typedef struct hash_table_entry_struct hash_table_entry;
340 /* Do some typedefs so that we don't have to write "struct" so often. */
342 typedef struct def_dec_info_struct def_dec_info;
343 typedef struct file_info_struct file_info;
344 typedef struct f_list_chain_item_struct f_list_chain_item;
346 /* In the struct below, note that the "_info" field has two different uses
347 depending on the type of hash table we are in (i.e. either the filenames
348 hash table or the function names hash table). In the filenames hash table
349 the info fields of the entries point to the file_info struct which is
350 associated with each filename (1 per filename). In the function names
351 hash table, the info field points to the head of a singly linked list of
352 def_dec_info entries which are all defs or decs of the function whose
353 name is pointed to by the "symbol" field. Keeping all of the defs/decs
354 for a given function name on a special list specifically for that function
355 name makes it quick and easy to find out all of the important information
356 about a given (named) function. */
358 struct hash_table_entry_struct {
359 hash_table_entry * hash_next; /* -> to secondary entries */
360 const char * symbol; /* -> to the hashed string */
362 const def_dec_info * _ddip;
366 #define ddip _info._ddip
367 #define fip _info._fip
369 /* Define a type specifically for our two hash tables. */
371 typedef hash_table_entry hash_table[HASH_TABLE_SIZE];
373 /* The following struct holds all of the important information about any
374 single filename (e.g. file) which we need to know about. */
376 struct file_info_struct {
377 const hash_table_entry * hash_entry; /* -> to associated hash entry */
378 const def_dec_info * defs_decs; /* -> to chain of defs/decs */
379 time_t mtime; /* Time of last modification. */
382 /* Due to the possibility that functions may return pointers to functions,
383 (which may themselves have their own parameter lists) and due to the
384 fact that returned pointers-to-functions may be of type "pointer-to-
385 function-returning-pointer-to-function" (ad nauseum) we have to keep
386 an entire chain of ANSI style formal parameter lists for each function.
388 Normally, for any given function, there will only be one formals list
389 on the chain, but you never know.
391 Note that the head of each chain of formals lists is pointed to by the
392 `f_list_chain' field of the corresponding def_dec_info record.
394 For any given chain, the item at the head of the chain is the *leftmost*
395 parameter list seen in the actual C language function declaration. If
396 there are other members of the chain, then these are linked in left-to-right
397 order from the head of the chain. */
399 struct f_list_chain_item_struct {
400 const f_list_chain_item * chain_next; /* -> to next item on chain */
401 const char * formals_list; /* -> to formals list string */
404 /* The following struct holds all of the important information about any
405 single function definition or declaration which we need to know about.
406 Note that for unprotoize we don't need to know very much because we
407 never even create records for stuff that we don't intend to convert
408 (like for instance defs and decs which are already in old K&R format
409 and "implicit" function declarations). */
411 struct def_dec_info_struct {
412 const def_dec_info * next_in_file; /* -> to rest of chain for file */
413 file_info * file; /* -> file_info for containing file */
414 int line; /* source line number of def/dec */
415 const char * ansi_decl; /* -> left end of ansi decl */
416 hash_table_entry * hash_entry; /* -> hash entry for function name */
417 unsigned int is_func_def; /* = 0 means this is a declaration */
418 const def_dec_info * next_for_func; /* -> to rest of chain for func name */
419 unsigned int f_list_count; /* count of formals lists we expect */
420 char prototyped; /* = 0 means already prototyped */
422 const f_list_chain_item * f_list_chain; /* -> chain of formals lists */
423 const def_dec_info * definition; /* -> def/dec containing related def */
424 char is_static; /* = 0 means visibility is "extern" */
425 char is_implicit; /* != 0 for implicit func decl's */
426 char written; /* != 0 means written for implicit */
427 #else /* !defined (UNPROTOIZE) */
428 const char * formal_names; /* -> to list of names of formals */
429 const char * formal_decls; /* -> to string of formal declarations */
430 #endif /* !defined (UNPROTOIZE) */
433 /* Pointer to the tail component of the filename by which this program was
434 invoked. Used everywhere in error and warning messages. */
436 static const char *pname;
438 /* Error counter. Will be non-zero if we should give up at the next convenient
441 static int errors = 0;
444 /* ??? These comments should say what the flag mean as well as the options
447 /* File name to use for running gcc. Allows GCC 2 to be named
448 something other than gcc. */
449 static const char *compiler_file_name = "gcc";
451 static int version_flag = 0; /* Print our version number. */
452 static int quiet_flag = 0; /* Don't print messages normally. */
453 static int nochange_flag = 0; /* Don't convert, just say what files
454 we would have converted. */
455 static int nosave_flag = 0; /* Don't save the old version. */
456 static int keep_flag = 0; /* Don't delete the .X files. */
457 static const char ** compile_params = 0; /* Option string for gcc. */
459 static const char *indent_string = " "; /* Indentation for newly
460 inserted parm decls. */
461 #else /* !defined (UNPROTOIZE) */
462 static int local_flag = 0; /* Insert new local decls (when?). */
463 static int global_flag = 0; /* set by -g option */
464 static int cplusplus_flag = 0; /* Rename converted files to *.C. */
465 static const char* nondefault_syscalls_dir = 0; /* Dir to look for
467 #endif /* !defined (UNPROTOIZE) */
469 /* An index into the compile_params array where we should insert the source
470 file name when we are ready to exec the C compiler. A zero value indicates
471 that we have not yet called munge_compile_params. */
473 static int input_file_name_index = 0;
475 /* An index into the compile_params array where we should insert the filename
476 for the aux info file, when we run the C compiler. */
477 static int aux_info_file_name_index = 0;
479 /* Count of command line arguments which were "filename" arguments. */
481 static int n_base_source_files = 0;
483 /* Points to a malloc'ed list of pointers to all of the filenames of base
484 source files which were specified on the command line. */
486 static const char **base_source_filenames;
488 /* Line number of the line within the current aux_info file that we
489 are currently processing. Used for error messages in case the prototypes
490 info file is corrupted somehow. */
492 static int current_aux_info_lineno;
494 /* Pointer to the name of the source file currently being converted. */
496 static const char *convert_filename;
498 /* Pointer to relative root string (taken from aux_info file) which indicates
499 where directory the user was in when he did the compilation step that
500 produced the containing aux_info file. */
502 static const char *invocation_filename;
504 /* Pointer to the base of the input buffer that holds the original text for the
505 source file currently being converted. */
507 static const char *orig_text_base;
509 /* Pointer to the byte just beyond the end of the input buffer that holds the
510 original text for the source file currently being converted. */
512 static const char *orig_text_limit;
514 /* Pointer to the base of the input buffer that holds the cleaned text for the
515 source file currently being converted. */
517 static const char *clean_text_base;
519 /* Pointer to the byte just beyond the end of the input buffer that holds the
520 cleaned text for the source file currently being converted. */
522 static const char *clean_text_limit;
524 /* Pointer to the last byte in the cleaned text buffer that we have already
525 (virtually) copied to the output buffer (or decided to ignore). */
527 static const char * clean_read_ptr;
529 /* Pointer to the base of the output buffer that holds the replacement text
530 for the source file currently being converted. */
532 static char *repl_text_base;
534 /* Pointer to the byte just beyond the end of the output buffer that holds the
535 replacement text for the source file currently being converted. */
537 static char *repl_text_limit;
539 /* Pointer to the last byte which has been stored into the output buffer.
540 The next byte to be stored should be stored just past where this points
543 static char * repl_write_ptr;
545 /* Pointer into the cleaned text buffer for the source file we are currently
546 converting. This points to the first character of the line that we last
547 did a "seek_to_line" to (see below). */
549 static const char *last_known_line_start;
551 /* Number of the line (in the cleaned text buffer) that we last did a
552 "seek_to_line" to. Will be one if we just read a new source file
553 into the cleaned text buffer. */
555 static int last_known_line_number;
557 /* The filenames hash table. */
559 static hash_table filename_primary;
561 /* The function names hash table. */
563 static hash_table function_name_primary;
565 /* The place to keep the recovery address which is used only in cases where
566 we get hopelessly confused by something in the cleaned original text. */
568 static jmp_buf source_confusion_recovery;
570 /* A pointer to the current directory filename (used by abspath). */
572 static char *cwd_buffer;
574 /* A place to save the read pointer until we are sure that an individual
575 attempt at editing will succeed. */
577 static const char * saved_clean_read_ptr;
579 /* A place to save the write pointer until we are sure that an individual
580 attempt at editing will succeed. */
582 static char * saved_repl_write_ptr;
584 /* Forward declaration. */
586 static const char *shortpath ();
588 /* Allocate some space, but check that the allocation was successful. */
589 /* alloca.c uses this, so don't make it static. */
597 rv = malloc (byte_count);
600 fprintf (stderr, "\n%s: virtual memory exceeded\n", pname);
602 return 0; /* avoid warnings */
608 /* Reallocate some space, but check that the reallocation was successful. */
611 xrealloc (old_space, byte_count)
612 pointer_type old_space;
617 rv = realloc (old_space, byte_count);
620 fprintf (stderr, "\n%s: virtual memory exceeded\n", pname);
622 return 0; /* avoid warnings */
628 /* Deallocate the area pointed to by an arbitrary pointer, but first, strip
629 the `const' qualifier from it and also make sure that the pointer value
634 const_pointer_type p;
637 free ((NONCONST pointer_type) p);
640 /* Make a copy of a string INPUT with size SIZE. */
643 savestring (input, size)
647 char *output = (char *) xmalloc (size + 1);
648 strcpy (output, input);
652 /* Make a copy of the concatenation of INPUT1 and INPUT2. */
655 savestring2 (input1, size1, input2, size2)
661 char *output = (char *) xmalloc (size1 + size2 + 1);
662 strcpy (output, input1);
663 strcpy (&output[size1], input2);
667 /* More 'friendly' abort that prints the line and file.
668 config.h can #define abort fancy_abort if you like that sort of thing. */
673 fprintf (stderr, "%s: internal abort\n", pname);
677 /* Make a duplicate of a given string in a newly allocated area. */
683 return strcpy ((char *) xmalloc (strlen (s) + 1), s);
686 /* Make a duplicate of the first N bytes of a given string in a newly
694 char *ret_val = strncpy ((char *) xmalloc (n + 1), s, n);
700 /* Return a pointer to the first occurrence of s2 within s1 or NULL if s2
701 does not occur within s1. Assume neither s1 nor s2 are null pointers. */
706 const char *const s2;
714 for (p1 = s1, p2 = s2; c = *p2; p1++, p2++)
724 /* Get setup to recover in case the edit we are about to do goes awry. */
729 saved_clean_read_ptr = clean_read_ptr;
730 saved_repl_write_ptr = repl_write_ptr;
733 /* Call this routine to recover our previous state whenever something looks
734 too confusing in the source code we are trying to edit. */
739 clean_read_ptr = saved_clean_read_ptr;
740 repl_write_ptr = saved_repl_write_ptr;
743 /* Return true if the given character is a legal identifier character. */
749 return (isalnum (ch) || (ch == '_') || (ch == '$'));
752 /* Give a message indicating the proper way to invoke this program and then
753 exit with non-zero status. */
759 fprintf (stderr, "%s: usage '%s [ -VqfnkN ] [ -i <istring> ] [ filename ... ]'\n",
761 #else /* !defined (UNPROTOIZE) */
762 fprintf (stderr, "%s: usage '%s [ -VqfnkNlgC ] [ -B <diname> ] [ filename ... ]'\n",
764 #endif /* !defined (UNPROTOIZE) */
768 /* Return true if the given filename (assumed to be an absolute filename)
769 designates a file residing anywhere beneath any one of the "system"
770 include directories. */
773 in_system_include_dir (path)
776 struct default_include *p;
779 abort (); /* Must be an absolutized filename. */
781 for (p = include_defaults; p->fname; p++)
782 if (!strncmp (path, p->fname, strlen (p->fname))
783 && path[strlen (p->fname)] == '/')
789 /* Return true if the given filename designates a file that the user has
790 read access to and for which the user has write access to the containing
794 file_could_be_converted (const char *path)
796 char *const dir_name = (char *) alloca (strlen (path) + 1);
798 if (my_access (path, R_OK))
802 char *dir_last_slash;
804 strcpy (dir_name, path);
805 dir_last_slash = rindex (dir_name, '/');
807 *dir_last_slash = '\0';
809 abort (); /* Should have been an absolutized filename. */
812 if (my_access (path, W_OK))
818 /* Return true if the given filename designates a file that we are allowed
819 to modify. Files which we should not attempt to modify are (a) "system"
820 include files, and (b) files which the user doesn't have write access to,
821 and (c) files which reside in directories which the user doesn't have
822 write access to. Unless requested to be quiet, give warnings about
823 files that we will not try to convert for one reason or another. An
824 exception is made for "system" include files, which we never try to
825 convert and for which we don't issue the usual warnings. */
828 file_normally_convertible (const char *path)
830 char *const dir_name = alloca (strlen (path) + 1);
832 if (in_system_include_dir (path))
836 char *dir_last_slash;
838 strcpy (dir_name, path);
839 dir_last_slash = rindex (dir_name, '/');
841 *dir_last_slash = '\0';
843 abort (); /* Should have been an absolutized filename. */
846 if (my_access (path, R_OK))
849 fprintf (stderr, "%s: warning: no read access for file `%s'\n",
850 pname, shortpath (NULL, path));
854 if (my_access (path, W_OK))
857 fprintf (stderr, "%s: warning: no write access for file `%s'\n",
858 pname, shortpath (NULL, path));
862 if (my_access (dir_name, W_OK))
865 fprintf (stderr, "%s: warning: no write access for dir containing `%s'\n",
866 pname, shortpath (NULL, path));
876 /* Return true if the given file_info struct refers to the special SYSCALLS.c.X
877 file. Return false otherwise. */
880 is_syscalls_file (fi_p)
881 const file_info *fi_p;
883 char const *f = fi_p->hash_entry->symbol;
884 size_t fl = strlen (f), sysl = sizeof (syscalls_filename) - 1;
885 return sysl <= fl && strcmp (f + fl - sysl, syscalls_filename) == 0;
888 #endif /* !defined (UNPROTOIZE) */
890 /* Check to see if this file will need to have anything done to it on this
891 run. If there is nothing in the given file which both needs conversion
892 and for which we have the necessary stuff to do the conversion, return
893 false. Otherwise, return true.
895 Note that (for protoize) it is only valid to call this function *after*
896 the connections between declarations and definitions have all been made
897 by connect_defs_and_decs. */
900 needs_to_be_converted (file_p)
901 const file_info *file_p;
903 const def_dec_info *ddp;
907 if (is_syscalls_file (file_p))
910 #endif /* !defined (UNPROTOIZE) */
912 for (ddp = file_p->defs_decs; ddp; ddp = ddp->next_in_file)
918 /* ... and if we a protoizing and this function is in old style ... */
920 /* ... and if this a definition or is a decl with an associated def ... */
921 && (ddp->is_func_def || (!ddp->is_func_def && ddp->definition))
923 #else /* defined (UNPROTOIZE) */
925 /* ... and if we are unprotoizing and this function is in new style ... */
928 #endif /* defined (UNPROTOIZE) */
930 /* ... then the containing file needs converting. */
935 /* Return 1 if the file name NAME is in a directory
936 that should be converted. */
939 directory_specified_p (name)
942 struct string_list *p;
944 for (p = directory_list; p; p = p->next)
945 if (!strncmp (name, p->name, strlen (p->name))
946 && name[strlen (p->name)] == '/')
948 const char *q = name + strlen (p->name) + 1;
950 /* If there are more slashes, it's in a subdir, so
951 this match doesn't count. */
963 /* Return 1 if the file named NAME should be excluded from conversion. */
966 file_excluded_p (name)
969 struct string_list *p;
970 int len = strlen (name);
972 for (p = exclude_list; p; p = p->next)
973 if (!strcmp (name + len - strlen (p->name), p->name)
974 && name[len - strlen (p->name) - 1] == '/')
980 /* Construct a new element of a string_list.
981 STRING is the new element value, and REST holds the remaining elements. */
983 static struct string_list *
984 string_list_cons (string, rest)
986 struct string_list *rest;
988 struct string_list *temp
989 = (struct string_list *) xmalloc (sizeof (struct string_list));
996 /* ??? The GNU convention for mentioning function args in its comments
997 is to capitalize them. So change "hash_tab_p" to HASH_TAB_P below.
998 Likewise for all the other functions. */
1000 /* Given a hash table, apply some function to each node in the table. The
1001 table to traverse is given as the "hash_tab_p" argument, and the
1002 function to be applied to each node in the table is given as "func"
1006 visit_each_hash_node (hash_tab_p, func)
1007 const hash_table_entry *hash_tab_p;
1010 const hash_table_entry *primary;
1012 for (primary = hash_tab_p; primary < &hash_tab_p[HASH_TABLE_SIZE]; primary++)
1013 if (primary->symbol)
1015 hash_table_entry *second;
1018 for (second = primary->hash_next; second; second = second->hash_next)
1023 /* Initialize all of the fields of a new hash table entry, pointed
1024 to by the "p" parameter. Note that the space to hold the entry
1025 is assumed to have already been allocated before this routine is
1028 static hash_table_entry *
1030 hash_table_entry *p;
1033 p->hash_next = NULL;
1034 p->symbol = dupstr (s);
1040 /* Look for a particular function name or filename in the particular
1041 hash table indicated by "hash_tab_p". If the name is not in the
1042 given hash table, add it. Either way, return a pointer to the
1043 hash table entry for the given name. */
1045 static hash_table_entry *
1046 lookup (hash_tab_p, search_symbol)
1047 hash_table_entry *hash_tab_p;
1048 const char *search_symbol;
1051 const char *search_symbol_char_p = search_symbol;
1052 hash_table_entry *p;
1054 while (*search_symbol_char_p)
1055 hash_value += *search_symbol_char_p++;
1056 hash_value &= hash_mask;
1057 p = &hash_tab_p[hash_value];
1059 return add_symbol (p, search_symbol);
1060 if (!strcmp (p->symbol, search_symbol))
1062 while (p->hash_next)
1065 if (!strcmp (p->symbol, search_symbol))
1068 p->hash_next = (hash_table_entry *) xmalloc (sizeof (hash_table_entry));
1070 return add_symbol (p, search_symbol);
1073 /* Throw a def/dec record on the junk heap.
1075 Also, since we are not using this record anymore, free up all of the
1076 stuff it pointed to. */
1082 xfree (p->ansi_decl);
1086 const f_list_chain_item * curr;
1087 const f_list_chain_item * next;
1089 for (curr = p->f_list_chain; curr; curr = next)
1091 next = curr->chain_next;
1095 #endif /* !defined (UNPROTOIZE) */
1100 /* Unexpand as many macro symbol as we can find.
1102 If the given line must be unexpanded, make a copy of it in the heap and
1103 return a pointer to the unexpanded copy. Otherwise return NULL. */
1106 unexpand_if_needed (aux_info_line)
1107 const char *aux_info_line;
1109 static char *line_buf = 0;
1110 static int line_buf_size = 0;
1111 const unexpansion* unexp_p;
1112 int got_unexpanded = 0;
1114 char *copy_p = line_buf;
1118 line_buf_size = 1024;
1119 line_buf = (char *) xmalloc (line_buf_size);
1124 /* Make a copy of the input string in line_buf, expanding as necessary. */
1126 for (s = aux_info_line; *s != '\n'; )
1128 for (unexp_p = unexpansions; unexp_p->expanded; unexp_p++)
1130 const char *in_p = unexp_p->expanded;
1131 size_t len = strlen (in_p);
1133 if (*s == *in_p && !strncmp (s, in_p, len) && !is_id_char (s[len]))
1135 int size = strlen (unexp_p->contracted);
1137 if (copy_p + size - line_buf >= line_buf_size)
1139 int offset = copy_p - line_buf;
1141 line_buf_size += size;
1142 line_buf = (char *) xrealloc (line_buf, line_buf_size);
1143 copy_p = line_buf + offset;
1145 strcpy (copy_p, unexp_p->contracted);
1148 /* Assume the there will not be another replacement required
1149 within the text just replaced. */
1152 goto continue_outer;
1155 if (copy_p - line_buf == line_buf_size)
1157 int offset = copy_p - line_buf;
1159 line_buf = (char *) xrealloc (line_buf, line_buf_size);
1160 copy_p = line_buf + offset;
1165 if (copy_p + 2 - line_buf >= line_buf_size)
1167 int offset = copy_p - line_buf;
1169 line_buf = (char *) xrealloc (line_buf, line_buf_size);
1170 copy_p = line_buf + offset;
1175 return (got_unexpanded ? dupstr (line_buf) : 0);
1178 /* Return the absolutized filename for the given relative
1179 filename. Note that if that filename is already absolute, it may
1180 still be returned in a modified form because this routine also
1181 eliminates redundant slashes and single dots and eliminates double
1182 dots to get a shortest possible filename from the given input
1183 filename. The absolutization of relative filenames is made by
1184 assuming that the given filename is to be taken as relative to
1185 the first argument (cwd) or to the current directory if cwd is
1189 abspath (cwd, rel_filename)
1191 const char *rel_filename;
1193 /* Setup the current working directory as needed. */
1194 const char *cwd2 = (cwd) ? cwd : cwd_buffer;
1195 char *const abs_buffer
1196 = (char *) alloca (strlen (cwd2) + strlen (rel_filename) + 2);
1197 char *endp = abs_buffer;
1200 /* Copy the filename (possibly preceded by the current working
1201 directory name) into the absolutization buffer. */
1206 if (rel_filename[0] != '/')
1209 while (*endp++ = *src_p++)
1211 *(endp-1) = '/'; /* overwrite null */
1213 src_p = rel_filename;
1214 while (*endp++ = *src_p++)
1218 /* Now make a copy of abs_buffer into abs_buffer, shortening the
1219 filename (by taking out slashes and dots) as we go. */
1221 outp = inp = abs_buffer;
1222 *outp++ = *inp++; /* copy first slash */
1225 *outp++ = *inp++; /* copy second slash */
1231 else if (inp[0] == '/' && outp[-1] == '/')
1236 else if (inp[0] == '.' && outp[-1] == '/')
1240 else if (inp[1] == '/')
1245 else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/'))
1247 inp += (inp[2] == '/') ? 3 : 2;
1249 while (outp >= abs_buffer && *outp != '/')
1251 if (outp < abs_buffer)
1253 /* Catch cases like /.. where we try to backup to a
1254 point above the absolute root of the logical file
1257 fprintf (stderr, "%s: invalid file name: %s\n",
1258 pname, rel_filename);
1268 /* On exit, make sure that there is a trailing null, and make sure that
1269 the last character of the returned string is *not* a slash. */
1272 if (outp[-1] == '/')
1275 /* Make a copy (in the heap) of the stuff left in the absolutization
1276 buffer and return a pointer to the copy. */
1278 return dupstr (abs_buffer);
1281 /* Given a filename (and possibly a directory name from which the filename
1282 is relative) return a string which is the shortest possible
1283 equivalent for the corresponding full (absolutized) filename. The
1284 shortest possible equivalent may be constructed by converting the
1285 absolutized filename to be a relative filename (i.e. relative to
1286 the actual current working directory). However if a relative filename
1287 is longer, then the full absolute filename is returned.
1291 Note that "simple-minded" conversion of any given type of filename (either
1292 relative or absolute) may not result in a valid equivalent filename if any
1293 subpart of the original filename is actually a symbolic link. */
1296 shortpath (cwd, filename)
1298 const char *filename;
1302 char *cwd_p = cwd_buffer;
1304 int unmatched_slash_count = 0;
1305 size_t filename_len = strlen (filename);
1307 path_p = abspath (cwd, filename);
1308 rel_buf_p = rel_buffer = (char *) xmalloc (filename_len);
1310 while (*cwd_p && (*cwd_p == *path_p))
1315 if (!*cwd_p && (!*path_p || *path_p == '/')) /* whole pwd matched */
1317 if (!*path_p) /* input *is* the current path! */
1328 while (*cwd_p != '/') /* backup to last slash */
1335 unmatched_slash_count++;
1338 /* Find out how many directory levels in cwd were *not* matched. */
1340 if (*cwd_p++ == '/')
1341 unmatched_slash_count++;
1343 /* Now we know how long the "short name" will be.
1344 Reject it if longer than the input. */
1345 if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len)
1348 /* For each of them, put a `../' at the beginning of the short name. */
1349 while (unmatched_slash_count--)
1351 /* Give up if the result gets to be longer
1352 than the absolute path name. */
1353 if (rel_buffer + filename_len <= rel_buf_p + 3)
1360 /* Then tack on the unmatched part of the desired file's name. */
1363 if (rel_buffer + filename_len <= rel_buf_p)
1366 while (*rel_buf_p++ = *path_p++);
1369 if (*(rel_buf_p-1) == '/')
1370 *--rel_buf_p = '\0';
1375 /* Lookup the given filename in the hash table for filenames. If it is a
1376 new one, then the hash table info pointer will be null. In this case,
1377 we create a new file_info record to go with the filename, and we initialize
1378 that record with some reasonable values. */
1380 /* FILENAME was const, but that causes a warning on AIX when calling stat.
1381 That is probably a bug in AIX, but might as well avoid the warning. */
1384 find_file (filename, do_not_stat)
1388 hash_table_entry *hash_entry_p;
1390 hash_entry_p = lookup (filename_primary, filename);
1391 if (hash_entry_p->fip)
1392 return hash_entry_p->fip;
1395 struct stat stat_buf;
1396 file_info *file_p = (file_info *) xmalloc (sizeof (file_info));
1398 /* If we cannot get status on any given source file, give a warning
1399 and then just set its time of last modification to infinity. */
1402 stat_buf.st_mtime = (time_t) 0;
1405 if (my_stat (filename, &stat_buf) == -1)
1407 fprintf (stderr, "%s: %s: can't get status: %s\n",
1408 pname, shortpath (NULL, filename), sys_errlist[errno]);
1409 stat_buf.st_mtime = (time_t) -1;
1413 hash_entry_p->fip = file_p;
1414 file_p->hash_entry = hash_entry_p;
1415 file_p->defs_decs = NULL;
1416 file_p->mtime = stat_buf.st_mtime;
1421 /* Generate a fatal error because some part of the aux_info file is
1425 aux_info_corrupted ()
1427 fprintf (stderr, "\n%s: fatal error: aux info file corrupted at line %d\n",
1428 pname, current_aux_info_lineno);
1432 /* ??? This comment is vague. Say what the condition is for. */
1433 /* Check to see that a condition is true. This is kind of like an assert. */
1436 check_aux_info (cond)
1440 aux_info_corrupted ();
1443 /* Given a pointer to the closing right parenthesis for a particular formals
1444 list (in a aux_info file) find the corresponding left parenthesis and
1445 return a pointer to it. */
1448 find_corresponding_lparen (p)
1454 for (paren_depth = 1, q = p-1; paren_depth; q--)
1469 /* Given a line from an aux info file, and a time at which the aux info
1470 file it came from was created, check to see if the item described in
1471 the line comes from a file which has been modified since the aux info
1472 file was created. If so, return non-zero, else return zero. */
1475 referenced_file_is_newer (l, aux_info_mtime)
1477 time_t aux_info_mtime;
1483 check_aux_info (l[0] == '/');
1484 check_aux_info (l[1] == '*');
1485 check_aux_info (l[2] == ' ');
1488 const char *filename_start = p = l + 3;
1492 filename = (char *) alloca ((size_t) (p - filename_start) + 1);
1493 strncpy (filename, filename_start, (size_t) (p - filename_start));
1494 filename[p-filename_start] = '\0';
1497 /* Call find_file to find the file_info record associated with the file
1498 which contained this particular def or dec item. Note that this call
1499 may cause a new file_info record to be created if this is the first time
1500 that we have ever known about this particular file. */
1502 fi_p = find_file (abspath (invocation_filename, filename), 0);
1504 return (fi_p->mtime > aux_info_mtime);
1507 /* Given a line of info from the aux_info file, create a new
1508 def_dec_info record to remember all of the important information about
1509 a function definition or declaration.
1511 Link this record onto the list of such records for the particular file in
1512 which it occurred in proper (descending) line number order (for now).
1514 If there is an identical record already on the list for the file, throw
1515 this one away. Doing so takes care of the (useless and troublesome)
1516 duplicates which are bound to crop up due to multiple inclusions of any
1517 given individual header file.
1519 Finally, link the new def_dec record onto the list of such records
1520 pertaining to this particular function name. */
1523 save_def_or_dec (l, is_syscalls)
1528 const char *semicolon_p;
1529 def_dec_info *def_dec_p = (def_dec_info *) xmalloc (sizeof (def_dec_info));
1532 def_dec_p->written = 0;
1533 #endif /* !defined (UNPROTOIZE) */
1535 /* Start processing the line by picking off 5 pieces of information from
1536 the left hand end of the line. These are filename, line number,
1537 new/old/implicit flag (new = ANSI prototype format), definition or
1538 declaration flag, and extern/static flag). */
1540 check_aux_info (l[0] == '/');
1541 check_aux_info (l[1] == '*');
1542 check_aux_info (l[2] == ' ');
1545 const char *filename_start = p = l + 3;
1550 filename = (char *) alloca ((size_t) (p - filename_start) + 1);
1551 strncpy (filename, filename_start, (size_t) (p - filename_start));
1552 filename[p-filename_start] = '\0';
1554 /* Call find_file to find the file_info record associated with the file
1555 which contained this particular def or dec item. Note that this call
1556 may cause a new file_info record to be created if this is the first time
1557 that we have ever known about this particular file.
1559 Note that we started out by forcing all of the base source file names
1560 (i.e. the names of the aux_info files with the .X stripped off) into the
1561 filenames hash table, and we simultaneously setup file_info records for
1562 all of these base file names (even if they may be useless later).
1563 The file_info records for all of these "base" file names (properly)
1564 act as file_info records for the "original" (i.e. un-included) files
1565 which were submitted to gcc for compilation (when the -aux-info
1566 option was used). */
1568 def_dec_p->file = find_file (abspath (invocation_filename, filename), is_syscalls);
1572 const char *line_number_start = ++p;
1573 char line_number[10];
1577 strncpy (line_number, line_number_start, (size_t) (p - line_number_start));
1578 line_number[p-line_number_start] = '\0';
1579 def_dec_p->line = atoi (line_number);
1582 /* Check that this record describes a new-style, old-style, or implicit
1583 definition or declaration. */
1585 p++; /* Skip over the `:'. */
1586 check_aux_info ((*p == 'N') || (*p == 'O') || (*p == 'I'));
1588 /* Is this a new style (ANSI prototyped) definition or declaration? */
1590 def_dec_p->prototyped = (*p == 'N');
1594 /* Is this an implicit declaration? */
1596 def_dec_p->is_implicit = (*p == 'I');
1598 #endif /* !defined (UNPROTOIZE) */
1602 check_aux_info ((*p == 'C') || (*p == 'F'));
1604 /* Is this item a function definition (F) or a declaration (C). Note that
1605 we treat item taken from the syscalls file as though they were function
1606 definitions regardless of what the stuff in the file says. */
1608 def_dec_p->is_func_def = ((*p++ == 'F') || is_syscalls);
1611 def_dec_p->definition = 0; /* Fill this in later if protoizing. */
1612 #endif /* !defined (UNPROTOIZE) */
1614 check_aux_info (*p++ == ' ');
1615 check_aux_info (*p++ == '*');
1616 check_aux_info (*p++ == '/');
1617 check_aux_info (*p++ == ' ');
1620 check_aux_info ((!strncmp (p, "static", 6)) || (!strncmp (p, "extern", 6)));
1621 #else /* !defined (UNPROTOIZE) */
1622 if (!strncmp (p, "static", 6))
1623 def_dec_p->is_static = -1;
1624 else if (!strncmp (p, "extern", 6))
1625 def_dec_p->is_static = 0;
1627 check_aux_info (0); /* Didn't find either `extern' or `static'. */
1628 #endif /* !defined (UNPROTOIZE) */
1631 const char *ansi_start = p;
1633 p += 6; /* Pass over the "static" or "extern". */
1635 /* We are now past the initial stuff. Search forward from here to find
1636 the terminating semicolon that should immediately follow the entire
1637 ANSI format function declaration. */
1644 /* Make a copy of the ansi declaration part of the line from the aux_info
1647 def_dec_p->ansi_decl
1648 = dupnstr (ansi_start, (size_t) ((semicolon_p+1) - ansi_start));
1651 /* Backup and point at the final right paren of the final argument list. */
1655 /* Now isolate a whole set of formal argument lists, one-by-one. Normally,
1656 there will only be one list to isolate, but there could be more. */
1658 def_dec_p->f_list_count = 0;
1661 def_dec_p->f_list_chain = NULL;
1662 #endif /* !defined (UNPROTOIZE) */
1666 const char *left_paren_p = find_corresponding_lparen (p);
1669 f_list_chain_item *cip =
1670 (f_list_chain_item *) xmalloc (sizeof (f_list_chain_item));
1673 = dupnstr (left_paren_p + 1, (size_t) (p - (left_paren_p+1)));
1675 /* Add the new chain item at the head of the current list. */
1677 cip->chain_next = def_dec_p->f_list_chain;
1678 def_dec_p->f_list_chain = cip;
1680 #endif /* !defined (UNPROTOIZE) */
1681 def_dec_p->f_list_count++;
1683 p = left_paren_p - 2;
1685 /* p must now point either to another right paren, or to the last
1686 character of the name of the function that was declared/defined.
1687 If p points to another right paren, then this indicates that we
1688 are dealing with multiple formals lists. In that case, there
1689 really should be another right paren preceding this right paren. */
1694 check_aux_info (*--p == ')');
1699 const char *past_fn = p + 1;
1701 check_aux_info (*past_fn == ' ');
1703 /* Scan leftwards over the identifier that names the function. */
1705 while (is_id_char (*p))
1709 /* p now points to the leftmost character of the function name. */
1712 char *fn_string = (char *) alloca (past_fn - p + 1);
1714 strncpy (fn_string, p, (size_t) (past_fn - p));
1715 fn_string[past_fn-p] = '\0';
1716 def_dec_p->hash_entry = lookup (function_name_primary, fn_string);
1720 /* Look at all of the defs and decs for this function name that we have
1721 collected so far. If there is already one which is at the same
1722 line number in the same file, then we can discard this new def_dec_info
1725 As an extra assurance that any such pair of (nominally) identical
1726 function declarations are in fact identical, we also compare the
1727 ansi_decl parts of the lines from the aux_info files just to be on
1730 This comparison will fail if (for instance) the user was playing
1731 messy games with the preprocessor which ultimately causes one
1732 function declaration in one header file to look differently when
1733 that file is included by two (or more) other files. */
1736 const def_dec_info *other;
1738 for (other = def_dec_p->hash_entry->ddip; other; other = other->next_for_func)
1740 if (def_dec_p->line == other->line && def_dec_p->file == other->file)
1742 if (strcmp (def_dec_p->ansi_decl, other->ansi_decl))
1744 fprintf (stderr, "%s:%d: declaration of function `%s' takes different forms\n",
1745 def_dec_p->file->hash_entry->symbol,
1747 def_dec_p->hash_entry->symbol);
1750 free_def_dec (def_dec_p);
1758 /* If we are doing unprotoizing, we must now setup the pointers that will
1759 point to the K&R name list and to the K&R argument declarations list.
1761 Note that if this is only a function declaration, then we should not
1762 expect to find any K&R style formals list following the ANSI-style
1763 formals list. This is because GCC knows that such information is
1764 useless in the case of function declarations (function definitions
1765 are a different story however).
1767 Since we are unprotoizing, we don't need any such lists anyway.
1768 All we plan to do is to delete all characters between ()'s in any
1771 def_dec_p->formal_names = NULL;
1772 def_dec_p->formal_decls = NULL;
1774 if (def_dec_p->is_func_def)
1777 check_aux_info (*++p == ' ');
1778 check_aux_info (*++p == '/');
1779 check_aux_info (*++p == '*');
1780 check_aux_info (*++p == ' ');
1781 check_aux_info (*++p == '(');
1784 const char *kr_names_start = ++p; /* Point just inside '('. */
1788 p--; /* point to closing right paren */
1790 /* Make a copy of the K&R parameter names list. */
1792 def_dec_p->formal_names
1793 = dupnstr (kr_names_start, (size_t) (p - kr_names_start));
1796 check_aux_info (*++p == ' ');
1799 /* p now points to the first character of the K&R style declarations
1800 list (if there is one) or to the star-slash combination that ends
1801 the comment in which such lists get embedded. */
1803 /* Make a copy of the K&R formal decls list and set the def_dec record
1806 if (*p == '*') /* Are there no K&R declarations? */
1808 check_aux_info (*++p == '/');
1809 def_dec_p->formal_decls = "";
1813 const char *kr_decls_start = p;
1815 while (p[0] != '*' || p[1] != '/')
1819 check_aux_info (*p == ' ');
1821 def_dec_p->formal_decls
1822 = dupnstr (kr_decls_start, (size_t) (p - kr_decls_start));
1825 /* Handle a special case. If we have a function definition marked as
1826 being in "old" style, and if it's formal names list is empty, then
1827 it may actually have the string "void" in its real formals list
1828 in the original source code. Just to make sure, we will get setup
1829 to convert such things anyway.
1831 This kludge only needs to be here because of an insurmountable
1832 problem with generating .X files. */
1834 if (!def_dec_p->prototyped && !*def_dec_p->formal_names)
1835 def_dec_p->prototyped = 1;
1838 /* Since we are unprotoizing, if this item is already in old (K&R) style,
1839 we can just ignore it. If that is true, throw away the itme now. */
1841 if (!def_dec_p->prototyped)
1843 free_def_dec (def_dec_p);
1847 #endif /* defined (UNPROTOIZE) */
1849 /* Add this record to the head of the list of records pertaining to this
1850 particular function name. */
1852 def_dec_p->next_for_func = def_dec_p->hash_entry->ddip;
1853 def_dec_p->hash_entry->ddip = def_dec_p;
1855 /* Add this new def_dec_info record to the sorted list of def_dec_info
1856 records for this file. Note that we don't have to worry about duplicates
1857 (caused by multiple inclusions of header files) here because we have
1858 already eliminated duplicates above. */
1860 if (!def_dec_p->file->defs_decs)
1862 def_dec_p->file->defs_decs = def_dec_p;
1863 def_dec_p->next_in_file = NULL;
1867 int line = def_dec_p->line;
1868 const def_dec_info *prev = NULL;
1869 const def_dec_info *curr = def_dec_p->file->defs_decs;
1870 const def_dec_info *next = curr->next_in_file;
1872 while (next && (line < curr->line))
1876 next = next->next_in_file;
1878 if (line >= curr->line)
1880 def_dec_p->next_in_file = curr;
1882 ((NONCONST def_dec_info *) prev)->next_in_file = def_dec_p;
1884 def_dec_p->file->defs_decs = def_dec_p;
1886 else /* assert (next == NULL); */
1888 ((NONCONST def_dec_info *) curr)->next_in_file = def_dec_p;
1889 /* assert (next == NULL); */
1890 def_dec_p->next_in_file = next;
1895 /* Set up the vector COMPILE_PARAMS which is the argument list for running GCC.
1896 Also set input_file_name_index and aux_info_file_name_index
1897 to the indices of the slots where the file names should go. */
1899 /* We initialize the vector by removing -g, -O, -S, -c, and -o options,
1900 and adding '-aux-info AUXFILE -S -o /dev/null INFILE' at the end. */
1903 munge_compile_params (params_list)
1904 const char *params_list;
1906 /* Build up the contents in a temporary vector
1907 that is so big that to has to be big enough. */
1908 const char **temp_params
1909 = (const char **) alloca ((strlen (params_list) + 8) * sizeof (char *));
1910 int param_count = 0;
1913 temp_params[param_count++] = compiler_file_name;
1916 while (isspace (*params_list))
1920 param = params_list;
1921 while (*params_list && !isspace (*params_list))
1923 if (param[0] != '-')
1924 temp_params[param_count++]
1925 = dupnstr (param, (size_t) (params_list - param));
1934 break; /* Don't copy these. */
1936 while (isspace (*params_list))
1938 while (*params_list && !isspace (*params_list))
1942 temp_params[param_count++]
1943 = dupnstr (param, (size_t) (params_list - param));
1949 temp_params[param_count++] = "-aux-info";
1951 /* Leave room for the aux-info file name argument. */
1952 aux_info_file_name_index = param_count;
1953 temp_params[param_count++] = NULL;
1955 temp_params[param_count++] = "-S";
1956 temp_params[param_count++] = "-o";
1957 temp_params[param_count++] = "/dev/null";
1959 /* Leave room for the input file name argument. */
1960 input_file_name_index = param_count;
1961 temp_params[param_count++] = NULL;
1962 /* Terminate the list. */
1963 temp_params[param_count++] = NULL;
1965 /* Make a copy of the compile_params in heap space. */
1968 = (const char **) xmalloc (sizeof (char *) * (param_count+1));
1969 memcpy (compile_params, temp_params, sizeof (char *) * param_count);
1972 /* Do a recompilation for the express purpose of generating a new aux_info
1973 file to go with a specific base source file. */
1976 gen_aux_info_file (base_filename)
1977 const char *base_filename;
1981 if (!input_file_name_index)
1982 munge_compile_params ("");
1984 /* Store the full source file name in the argument vector. */
1985 compile_params[input_file_name_index] = shortpath (NULL, base_filename);
1986 /* Add .X to source file name to get aux-info file name. */
1987 compile_params[aux_info_file_name_index]
1988 = savestring2 (compile_params[input_file_name_index],
1989 strlen (compile_params[input_file_name_index]),
1994 fprintf (stderr, "%s: compiling `%s'\n",
1995 pname, compile_params[input_file_name_index]);
1997 if (child_pid = fork ())
1999 if (child_pid == -1)
2001 fprintf (stderr, "%s: could not fork process: %s\n",
2002 pname, sys_errlist[errno]);
2007 /* Print out the command line that the other process is now executing. */
2013 fputs ("\t", stderr);
2014 for (arg = compile_params; *arg; arg++)
2016 fputs (*arg, stderr);
2017 fputc (' ', stderr);
2019 fputc ('\n', stderr);
2027 if (wait (&wait_status) == -1)
2029 fprintf (stderr, "%s: wait failed: %s\n",
2030 pname, sys_errlist[errno]);
2033 if ((wait_status & 0x7F) != 0)
2035 fprintf (stderr, "%s: subprocess got fatal signal %d",
2036 pname, (wait_status & 0x7F));
2039 if (((wait_status & 0xFF00) >> 8) != 0)
2041 fprintf (stderr, "%s: %s exited with status %d\n",
2042 pname, base_filename, ((wait_status & 0xFF00) >> 8));
2050 if (my_execvp (compile_params[0], (char *const *) compile_params))
2052 int e = errno, f = fileno (stderr);
2053 write (f, pname, strlen (pname));
2055 write (f, compile_params[0], strlen (compile_params[0]));
2057 write (f, sys_errlist[e], strlen (sys_errlist[e]));
2061 return 1; /* Never executed. */
2065 /* Read in all of the information contained in a single aux_info file.
2066 Save all of the important stuff for later. */
2069 process_aux_info_file (base_source_filename, keep_it, is_syscalls)
2070 const char *base_source_filename;
2074 size_t base_len = strlen (base_source_filename);
2075 char * aux_info_filename
2076 = (char *) alloca (base_len + strlen (aux_info_suffix) + 1);
2077 char *aux_info_base;
2078 char *aux_info_limit;
2079 char *aux_info_relocated_name;
2080 const char *aux_info_second_line;
2081 time_t aux_info_mtime;
2082 size_t aux_info_size;
2085 /* Construct the aux_info filename from the base source filename. */
2087 strcpy (aux_info_filename, base_source_filename);
2088 strcat (aux_info_filename, aux_info_suffix);
2090 /* Check that the aux_info file exists and is readable. If it does not
2091 exist, try to create it (once only). */
2095 /* If file doesn't exist, set must_create.
2096 Likewise if it exists and we can read it but it is obsolete.
2097 Otherwise, report an error. */
2099 if (my_access (aux_info_filename, R_OK) == -1)
2101 if (errno == ENOENT)
2105 fprintf (stderr, "%s: warning: missing SYSCALLS file `%s'\n",
2106 pname, aux_info_filename);
2113 fprintf (stderr, "%s: can't read aux info file `%s': %s\n",
2114 pname, shortpath (NULL, aux_info_filename),
2115 sys_errlist[errno]);
2120 #if 0 /* There is code farther down to take care of this. */
2124 stat (aux_info_file_name, &s1);
2125 stat (base_source_file_name, &s2);
2126 if (s2.st_mtime > s1.st_mtime)
2131 /* If we need a .X file, create it, and verify we can read it. */
2134 if (!gen_aux_info_file (base_source_filename))
2139 if (my_access (aux_info_filename, R_OK) == -1)
2141 fprintf (stderr, "%s: can't read aux info file `%s': %s\n",
2142 pname, shortpath (NULL, aux_info_filename),
2143 sys_errlist[errno]);
2150 struct stat stat_buf;
2152 /* Get some status information about this aux_info file. */
2154 if (my_stat (aux_info_filename, &stat_buf) == -1)
2156 fprintf (stderr, "%s: can't get status of aux info file `%s': %s\n",
2157 pname, shortpath (NULL, aux_info_filename),
2158 sys_errlist[errno]);
2163 /* Check on whether or not this aux_info file is zero length. If it is,
2164 then just ignore it and return. */
2166 if ((aux_info_size = stat_buf.st_size) == 0)
2169 /* Get the date/time of last modification for this aux_info file and
2170 remember it. We will have to check that any source files that it
2171 contains information about are at least this old or older. */
2173 aux_info_mtime = stat_buf.st_mtime;
2175 /* Compare mod time with the .c file; update .X file if obsolete.
2176 The code later on can fail to check the .c file
2177 if it did not directly define any functions. */
2179 if (my_stat (base_source_filename, &stat_buf) == -1)
2181 fprintf (stderr, "%s: can't get status of aux info file `%s': %s\n",
2182 pname, shortpath (NULL, base_source_filename),
2183 sys_errlist[errno]);
2187 if (stat_buf.st_mtime > aux_info_mtime)
2194 /* Open the aux_info file. */
2196 if ((aux_info_file = my_open (aux_info_filename, O_RDONLY, 0444 )) == -1)
2198 fprintf (stderr, "%s: can't open aux info file `%s' for reading: %s\n",
2199 pname, shortpath (NULL, aux_info_filename),
2200 sys_errlist[errno]);
2204 /* Allocate space to hold the aux_info file in memory. */
2206 aux_info_base = xmalloc (aux_info_size + 1);
2207 aux_info_limit = aux_info_base + aux_info_size;
2208 *aux_info_limit = '\0';
2210 /* Read the aux_info file into memory. */
2212 if (read (aux_info_file, aux_info_base, aux_info_size) != aux_info_size)
2214 fprintf (stderr, "%s: error reading aux info file `%s': %s\n",
2215 pname, shortpath (NULL, aux_info_filename),
2216 sys_errlist[errno]);
2217 free (aux_info_base);
2218 close (aux_info_file);
2222 /* Close the aux info file. */
2224 if (close (aux_info_file))
2226 fprintf (stderr, "%s: error closing aux info file `%s': %s\n",
2227 pname, shortpath (NULL, aux_info_filename),
2228 sys_errlist[errno]);
2229 free (aux_info_base);
2230 close (aux_info_file);
2235 /* Delete the aux_info file (unless requested not to). If the deletion
2236 fails for some reason, don't even worry about it. */
2238 if (must_create && !keep_it)
2239 if (my_unlink (aux_info_filename) == -1)
2240 fprintf (stderr, "%s: can't delete aux info file `%s': %s\n",
2241 pname, shortpath (NULL, aux_info_filename),
2242 sys_errlist[errno]);
2244 /* Save a pointer into the first line of the aux_info file which
2245 contains the filename of the directory from which the compiler
2246 was invoked when the associated source file was compiled.
2247 This information is used later to help create complete
2248 filenames out of the (potentially) relative filenames in
2249 the aux_info file. */
2252 char *p = aux_info_base;
2259 invocation_filename = p; /* Save a pointer to first byte of path. */
2264 while (*p++ != '\n')
2266 aux_info_second_line = p;
2267 aux_info_relocated_name = 0;
2268 if (invocation_filename[0] != '/')
2270 /* INVOCATION_FILENAME is relative;
2271 append it to BASE_SOURCE_FILENAME's dir. */
2273 aux_info_relocated_name = xmalloc (base_len + (p-invocation_filename));
2274 strcpy (aux_info_relocated_name, base_source_filename);
2275 dir_end = rindex (aux_info_relocated_name, '/');
2279 dir_end = aux_info_relocated_name;
2280 strcpy (dir_end, invocation_filename);
2281 invocation_filename = aux_info_relocated_name;
2287 const char *aux_info_p;
2289 /* Do a pre-pass on the lines in the aux_info file, making sure that all
2290 of the source files referenced in there are at least as old as this
2291 aux_info file itself. If not, go back and regenerate the aux_info
2292 file anew. Don't do any of this for the syscalls file. */
2296 current_aux_info_lineno = 2;
2298 for (aux_info_p = aux_info_second_line; *aux_info_p; )
2300 if (referenced_file_is_newer (aux_info_p, aux_info_mtime))
2302 free (aux_info_base);
2303 xfree (aux_info_relocated_name);
2304 if (keep_it && my_unlink (aux_info_filename) == -1)
2306 fprintf (stderr, "%s: can't delete file `%s': %s\n",
2307 pname, shortpath (NULL, aux_info_filename),
2308 sys_errlist[errno]);
2314 /* Skip over the rest of this line to start of next line. */
2316 while (*aux_info_p != '\n')
2319 current_aux_info_lineno++;
2323 /* Now do the real pass on the aux_info lines. Save their information in
2324 the in-core data base. */
2326 current_aux_info_lineno = 2;
2328 for (aux_info_p = aux_info_second_line; *aux_info_p;)
2330 char *unexpanded_line = unexpand_if_needed (aux_info_p);
2332 if (unexpanded_line)
2334 save_def_or_dec (unexpanded_line, is_syscalls);
2335 free (unexpanded_line);
2338 save_def_or_dec (aux_info_p, is_syscalls);
2340 /* Skip over the rest of this line and get to start of next line. */
2342 while (*aux_info_p != '\n')
2345 current_aux_info_lineno++;
2349 free (aux_info_base);
2350 xfree (aux_info_relocated_name);
2355 /* Check an individual filename for a .c suffix. If the filename has this
2356 suffix, rename the file such that its suffix is changed to .C. This
2357 function implements the -C option. */
2361 const hash_table_entry *hp;
2363 const char *filename = hp->symbol;
2364 int last_char_index = strlen (filename) - 1;
2365 char *const new_filename = (char *) alloca (strlen (filename) + 1);
2367 /* Note that we don't care here if the given file was converted or not. It
2368 is possible that the given file was *not* converted, simply because there
2369 was nothing in it which actually required conversion. Even in this case,
2370 we want to do the renaming. Note that we only rename files with the .c
2373 if (filename[last_char_index] != 'c' || filename[last_char_index-1] != '.')
2376 strcpy (new_filename, filename);
2377 new_filename[last_char_index] = 'C';
2379 if (my_link (filename, new_filename) == -1)
2381 fprintf (stderr, "%s: warning: can't link file `%s' to `%s': %s\n",
2382 pname, shortpath (NULL, filename),
2383 shortpath (NULL, new_filename), sys_errlist[errno]);
2388 if (my_unlink (filename) == -1)
2390 fprintf (stderr, "%s: warning: can't delete file `%s': %s\n",
2391 pname, shortpath (NULL, filename), sys_errlist[errno]);
2397 #endif /* !defined (UNPROTOIZE) */
2399 /* Take the list of definitions and declarations attached to a particular
2400 file_info node and reverse the order of the list. This should get the
2401 list into an order such that the item with the lowest associated line
2402 number is nearest the head of the list. When these lists are originally
2403 built, they are in the opposite order. We want to traverse them in
2404 normal line number order later (i.e. lowest to highest) so reverse the
2408 reverse_def_dec_list (hp)
2409 const hash_table_entry *hp;
2411 file_info *file_p = hp->fip;
2412 const def_dec_info *prev = NULL;
2413 const def_dec_info *current = file_p->defs_decs;
2415 if (!( current = file_p->defs_decs))
2416 return; /* no list to reverse */
2419 if (! (current = current->next_in_file))
2420 return; /* can't reverse a single list element */
2422 ((NONCONST def_dec_info *) prev)->next_in_file = NULL;
2426 const def_dec_info *next = current->next_in_file;
2428 ((NONCONST def_dec_info *) current)->next_in_file = prev;
2433 file_p->defs_decs = prev;
2438 /* Find the (only?) extern definition for a particular function name, starting
2439 from the head of the linked list of entries for the given name. If we
2440 cannot find an extern definition for the given function name, issue a
2441 warning and scrounge around for the next best thing, i.e. an extern
2442 function declaration with a prototype attached to it. Note that we only
2443 allow such substitutions for extern declarations and never for static
2444 declarations. That's because the only reason we allow them at all is
2445 to let un-prototyped function declarations for system-supplied library
2446 functions get their prototypes from our own extra SYSCALLS.c.X file which
2447 contains all of the correct prototypes for system functions. */
2449 static const def_dec_info *
2450 find_extern_def (head, user)
2451 const def_dec_info *head;
2452 const def_dec_info *user;
2454 const def_dec_info *dd_p;
2455 const def_dec_info *extern_def_p = NULL;
2456 int conflict_noted = 0;
2458 /* Don't act too stupid here. Somebody may try to convert an entire system
2459 in one swell fwoop (rather than one program at a time, as should be done)
2460 and in that case, we may find that there are multiple extern definitions
2461 of a given function name in the entire set of source files that we are
2462 converting. If however one of these definitions resides in exactly the
2463 same source file as the reference we are trying to satisfy then in that
2464 case it would be stupid for us to fail to realize that this one definition
2465 *must* be the precise one we are looking for.
2467 To make sure that we don't miss an opportunity to make this "same file"
2468 leap of faith, we do a prescan of the list of records relating to the
2469 given function name, and we look (on this first scan) *only* for a
2470 definition of the function which is in the same file as the reference
2471 we are currently trying to satisfy. */
2473 for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
2474 if (dd_p->is_func_def && !dd_p->is_static && dd_p->file == user->file)
2477 /* Now, since we have not found a definition in the same file as the
2478 reference, we scan the list again and consider all possibilities from
2479 all files. Here we may get conflicts with the things listed in the
2480 SYSCALLS.c.X file, but if that happens it only means that the source
2481 code being converted contains its own definition of a function which
2482 could have been supplied by libc.a. In such cases, we should avoid
2483 issuing the normal warning, and defer to the definition given in the
2486 for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
2487 if (dd_p->is_func_def && !dd_p->is_static)
2489 if (!extern_def_p) /* Previous definition? */
2490 extern_def_p = dd_p; /* Remember the first definition found. */
2493 /* Ignore definition just found if it came from SYSCALLS.c.X. */
2495 if (is_syscalls_file (dd_p->file))
2498 /* Quietly replace the definition previously found with the one
2499 just found if the previous one was from SYSCALLS.c.X. */
2501 if (is_syscalls_file (extern_def_p->file))
2503 extern_def_p = dd_p;
2507 /* If we get here, then there is a conflict between two function
2508 declarations for the same function, both of which came from the
2511 if (!conflict_noted) /* first time we noticed? */
2514 fprintf (stderr, "%s: conflicting extern definitions of '%s'\n",
2515 pname, head->hash_entry->symbol);
2518 fprintf (stderr, "%s: declarations of '%s' will not be converted\n",
2519 pname, head->hash_entry->symbol);
2520 fprintf (stderr, "%s: conflict list for '%s' follows:\n",
2521 pname, head->hash_entry->symbol);
2522 fprintf (stderr, "%s: %s(%d): %s\n",
2524 shortpath (NULL, extern_def_p->file->hash_entry->symbol),
2525 extern_def_p->line, extern_def_p->ansi_decl);
2529 fprintf (stderr, "%s: %s(%d): %s\n",
2531 shortpath (NULL, dd_p->file->hash_entry->symbol),
2532 dd_p->line, dd_p->ansi_decl);
2536 /* We want to err on the side of caution, so if we found multiple conflicting
2537 definitions for the same function, treat this as being that same as if we
2538 had found no definitions (i.e. return NULL). */
2545 /* We have no definitions for this function so do the next best thing.
2546 Search for an extern declaration already in prototype form. */
2548 for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
2549 if (!dd_p->is_func_def && !dd_p->is_static && dd_p->prototyped)
2551 extern_def_p = dd_p; /* save a pointer to the definition */
2553 fprintf (stderr, "%s: warning: using formals list from %s(%d) for function `%s'\n",
2555 shortpath (NULL, dd_p->file->hash_entry->symbol),
2556 dd_p->line, dd_p->hash_entry->symbol);
2560 /* Gripe about unprototyped function declarations that we found no
2561 corresponding definition (or other source of prototype information)
2564 Gripe even if the unprototyped declaration we are worried about
2565 exists in a file in one of the "system" include directories. We
2566 can gripe about these because we should have at least found a
2567 corresponding (pseudo) definition in the SYSCALLS.c.X file. If we
2568 didn't, then that means that the SYSCALLS.c.X file is missing some
2569 needed prototypes for this particular system. That is worth telling
2574 const char *file = user->file->hash_entry->symbol;
2577 if (in_system_include_dir (file))
2579 /* Why copy this string into `needed' at all?
2580 Why not just use user->ansi_decl without copying? */
2581 char *needed = (char *) alloca (strlen (user->ansi_decl) + 1);
2584 strcpy (needed, user->ansi_decl);
2585 p = (NONCONST char *) substr (needed, user->hash_entry->symbol)
2586 + strlen (user->hash_entry->symbol) + 2;
2587 /* Avoid having ??? in the string. */
2593 fprintf (stderr, "%s: %d: `%s' used but missing from SYSCALLS\n",
2594 shortpath (NULL, file), user->line,
2595 needed+7); /* Don't print "extern " */
2599 fprintf (stderr, "%s: %d: warning: no extern definition for `%s'\n",
2600 shortpath (NULL, file), user->line,
2601 user->hash_entry->symbol);
2605 return extern_def_p;
2608 /* Find the (only?) static definition for a particular function name in a
2609 given file. Here we get the function-name and the file info indirectly
2610 from the def_dec_info record pointer which is passed in. */
2612 static const def_dec_info *
2613 find_static_definition (user)
2614 const def_dec_info *user;
2616 const def_dec_info *head = user->hash_entry->ddip;
2617 const def_dec_info *dd_p;
2618 int num_static_defs = 0;
2619 const def_dec_info *static_def_p = NULL;
2621 for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
2622 if (dd_p->is_func_def && dd_p->is_static && (dd_p->file == user->file))
2624 static_def_p = dd_p; /* save a pointer to the definition */
2627 if (num_static_defs == 0)
2630 fprintf (stderr, "%s: warning: no static definition for `%s' in file `%s'\n",
2631 pname, head->hash_entry->symbol,
2632 shortpath (NULL, user->file->hash_entry->symbol));
2634 else if (num_static_defs > 1)
2636 fprintf (stderr, "%s: multiple static defs of `%s' in file `%s'\n",
2637 pname, head->hash_entry->symbol,
2638 shortpath (NULL, user->file->hash_entry->symbol));
2641 return static_def_p;
2644 /* Find good prototype style formal argument lists for all of the function
2645 declarations which didn't have them before now.
2647 To do this we consider each function name one at a time. For each function
2648 name, we look at the items on the linked list of def_dec_info records for
2649 that particular name.
2651 Somewhere on this list we should find one (and only one) def_dec_info
2652 record which represents the actual function definition, and this record
2653 should have a nice formal argument list already associated with it.
2655 Thus, all we have to do is to connect up all of the other def_dec_info
2656 records for this particular function name to the special one which has
2657 the full-blown formals list.
2659 Of course it is a little more complicated than just that. See below for
2663 connect_defs_and_decs (hp)
2664 const hash_table_entry *hp;
2666 const def_dec_info *dd_p;
2667 const def_dec_info *extern_def_p = NULL;
2668 int first_extern_reference = 1;
2670 /* Traverse the list of definitions and declarations for this particular
2671 function name. For each item on the list, if it is a function
2672 definition (either old style or new style) then GCC has already been
2673 kind enough to produce a prototype for us, and it is associated with
2674 the item already, so declare the item as its own associated "definition".
2676 Also, for each item which is only a function declaration, but which
2677 nonetheless has its own prototype already (obviously supplied by the user)
2678 declare the item as it's own definition.
2680 Note that when/if there are multiple user-supplied prototypes already
2681 present for multiple declarations of any given function, these multiple
2682 prototypes *should* all match exactly with one another and with the
2683 prototype for the actual function definition. We don't check for this
2684 here however, since we assume that the compiler must have already done
2685 this consistency checking when it was creating the .X files. */
2687 for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
2688 if (dd_p->prototyped)
2689 ((NONCONST def_dec_info *) dd_p)->definition = dd_p;
2691 /* Traverse the list of definitions and declarations for this particular
2692 function name. For each item on the list, if it is an extern function
2693 declaration and if it has no associated definition yet, go try to find
2694 the matching extern definition for the declaration.
2696 When looking for the matching function definition, warn the user if we
2699 If we find more that one function definition also issue a warning.
2701 Do the search for the matching definition only once per unique function
2702 name (and only when absolutely needed) so that we can avoid putting out
2703 redundant warning messages, and so that we will only put out warning
2704 messages when there is actually a reference (i.e. a declaration) for
2705 which we need to find a matching definition. */
2707 for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
2708 if (!dd_p->is_func_def && !dd_p->is_static && !dd_p->definition)
2710 if (first_extern_reference)
2712 extern_def_p = find_extern_def (hp->ddip, dd_p);
2713 first_extern_reference = 0;
2715 ((NONCONST def_dec_info *) dd_p)->definition = extern_def_p;
2718 /* Traverse the list of definitions and declarations for this particular
2719 function name. For each item on the list, if it is a static function
2720 declaration and if it has no associated definition yet, go try to find
2721 the matching static definition for the declaration within the same file.
2723 When looking for the matching function definition, warn the user if we
2724 fail to find one in the same file with the declaration, and refuse to
2725 convert this kind of cross-file static function declaration. After all,
2726 this is stupid practice and should be discouraged.
2728 We don't have to worry about the possibility that there is more than one
2729 matching function definition in the given file because that would have
2730 been flagged as an error by the compiler.
2732 Do the search for the matching definition only once per unique
2733 function-name/source-file pair (and only when absolutely needed) so that
2734 we can avoid putting out redundant warning messages, and so that we will
2735 only put out warning messages when there is actually a reference (i.e. a
2736 declaration) for which we actually need to find a matching definition. */
2738 for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
2739 if (!dd_p->is_func_def && dd_p->is_static && !dd_p->definition)
2741 const def_dec_info *dd_p2;
2742 const def_dec_info *static_def;
2744 /* We have now found a single static declaration for which we need to
2745 find a matching definition. We want to minimize the work (and the
2746 number of warnings), so we will find an appropriate (matching)
2747 static definition for this declaration, and then distribute it
2748 (as the definition for) any and all other static declarations
2749 for this function name which occur within the same file, and which
2750 do not already have definitions.
2752 Note that a trick is used here to prevent subsequent attempts to
2753 call find_static_definition for a given function-name & file
2754 if the first such call returns NULL. Essentially, we convert
2755 these NULL return values to -1, and put the -1 into the definition
2756 field for each other static declaration from the same file which
2757 does not already have an associated definition.
2758 This makes these other static declarations look like they are
2759 actually defined already when the outer loop here revisits them
2760 later on. Thus, the outer loop will skip over them. Later, we
2761 turn the -1's back to NULL's. */
2763 ((NONCONST def_dec_info *) dd_p)->definition =
2764 (static_def = find_static_definition (dd_p))
2766 : (const def_dec_info *) -1;
2768 for (dd_p2 = dd_p->next_for_func; dd_p2; dd_p2 = dd_p2->next_for_func)
2769 if (!dd_p2->is_func_def && dd_p2->is_static
2770 && !dd_p2->definition && (dd_p2->file == dd_p->file))
2771 ((NONCONST def_dec_info *)dd_p2)->definition = dd_p->definition;
2774 /* Convert any dummy (-1) definitions we created in the step above back to
2775 NULL's (as they should be). */
2777 for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
2778 if (dd_p->definition == (def_dec_info *) -1)
2779 ((NONCONST def_dec_info *) dd_p)->definition = NULL;
2782 #endif /* !defined (UNPROTOIZE) */
2784 /* Give a pointer into the clean text buffer, return a number which is the
2785 original source line number that the given pointer points into. */
2788 identify_lineno (clean_p)
2789 const char *clean_p;
2794 for (scan_p = clean_text_base; scan_p <= clean_p; scan_p++)
2795 if (*scan_p == '\n')
2800 /* Issue an error message and give up on doing this particular edit. */
2803 declare_source_confusing (clean_p)
2804 const char *clean_p;
2809 fprintf (stderr, "%s: %d: warning: source too confusing\n",
2810 shortpath (NULL, convert_filename), last_known_line_number);
2812 fprintf (stderr, "%s: %d: warning: source too confusing\n",
2813 shortpath (NULL, convert_filename),
2814 identify_lineno (clean_p));
2816 longjmp (source_confusion_recovery, 1);
2819 /* Check that a condition which is expected to be true in the original source
2820 code is in fact true. If not, issue an error message and give up on
2821 converting this particular source file. */
2824 check_source (cond, clean_p)
2826 const char *clean_p;
2829 declare_source_confusing (clean_p);
2832 /* If we think of the in-core cleaned text buffer as a memory mapped
2833 file (with the variable last_known_line_start acting as sort of a
2834 file pointer) then we can imagine doing "seeks" on the buffer. The
2835 following routine implements a kind of "seek" operation for the in-core
2836 (cleaned) copy of the source file. When finished, it returns a pointer to
2837 the start of a given (numbered) line in the cleaned text buffer.
2839 Note that protoize only has to "seek" in the forward direction on the
2840 in-core cleaned text file buffers, and it never needs to back up.
2842 This routine is made a little bit faster by remembering the line number
2843 (and pointer value) supplied (and returned) from the previous "seek".
2844 This prevents us from always having to start all over back at the top
2845 of the in-core cleaned buffer again. */
2851 if (n < last_known_line_number)
2854 while (n > last_known_line_number)
2856 while (*last_known_line_start != '\n')
2857 check_source (++last_known_line_start < clean_text_limit, 0);
2858 last_known_line_start++;
2859 last_known_line_number++;
2861 return last_known_line_start;
2864 /* Given a pointer to a character in the cleaned text buffer, return a pointer
2865 to the next non-whitepace character which follows it. */
2868 forward_to_next_token_char (ptr)
2871 for (++ptr; isspace (*ptr); check_source (++ptr < clean_text_limit, 0))
2876 /* Copy a chunk of text of length `len' and starting at `str' to the current
2877 output buffer. Note that all attempts to add stuff to the current output
2878 buffer ultimately go through here. */
2881 output_bytes (str, len)
2885 if ((repl_write_ptr + 1) + len >= repl_text_limit)
2887 size_t new_size = (repl_text_limit - repl_text_base) << 1;
2888 char *new_buf = (char *) xrealloc (repl_text_base, new_size);
2890 repl_write_ptr = new_buf + (repl_write_ptr - repl_text_base);
2891 repl_text_base = new_buf;
2892 repl_text_limit = new_buf + new_size;
2894 memcpy (repl_write_ptr + 1, str, len);
2895 repl_write_ptr += len;
2898 /* Copy all bytes (except the trailing null) of a null terminated string to
2899 the current output buffer. */
2905 output_bytes (str, strlen (str));
2908 /* Copy some characters from the original text buffer to the current output
2911 This routine takes a pointer argument `p' which is assumed to be a pointer
2912 into the cleaned text buffer. The bytes which are copied are the `original'
2913 equivalents for the set of bytes between the last value of `clean_read_ptr'
2914 and the argument value `p'.
2916 The set of bytes copied however, comes *not* from the cleaned text buffer,
2917 but rather from the direct counterparts of these bytes within the original
2920 Thus, when this function is called, some bytes from the original text
2921 buffer (which may include original comments and preprocessing directives)
2922 will be copied into the output buffer.
2924 Note that the request implide when this routine is called includes the
2925 byte pointed to by the argument pointer `p'. */
2931 size_t copy_length = (size_t) (p - clean_read_ptr);
2932 const char *copy_start = orig_text_base+(clean_read_ptr-clean_text_base)+1;
2934 if (copy_length == 0)
2937 output_bytes (copy_start, copy_length);
2941 /* Given a pointer to a def_dec_info record which represents some form of
2942 definition of a function (perhaps a real definition, or in lieu of that
2943 perhaps just a declaration with a full prototype) return true if this
2944 function is one which we should avoid converting. Return false
2948 other_variable_style_function (ansi_header)
2949 const char *ansi_header;
2953 /* See if we have a stdarg function, or a function which has stdarg style
2954 parameters or a stdarg style return type. */
2956 return (int) substr (ansi_header, "...");
2958 #else /* !defined (UNPROTOIZE) */
2960 /* See if we have a varargs function, or a function which has varargs style
2961 parameters or a varargs style return type. */
2964 int len = strlen (varargs_style_indicator);
2966 for (p = ansi_header; p; )
2968 const char *candidate;
2970 if ((candidate = substr (p, varargs_style_indicator)) == 0)
2973 if (!is_id_char (candidate[-1]) && !is_id_char (candidate[len]))
2979 #endif /* !defined (UNPROTOIZE) */
2982 /* Do the editing operation specifically for a function "declaration". Note
2983 that editing for function "definitions" are handled in a separate routine
2987 edit_fn_declaration (def_dec_p, clean_text_p)
2988 const def_dec_info *def_dec_p;
2989 const char *volatile clean_text_p;
2991 const char *start_formals;
2992 const char *end_formals;
2993 const char *function_to_edit = def_dec_p->hash_entry->symbol;
2994 size_t func_name_len = strlen (function_to_edit);
2995 const char *end_of_fn_name;
2999 const f_list_chain_item *this_f_list_chain_item;
3000 const def_dec_info *definition = def_dec_p->definition;
3002 /* If we are protoizing, and if we found no corresponding definition for
3003 this particular function declaration, then just leave this declaration
3004 exactly as it is. */
3009 /* If we are protoizing, and if the corresponding definition that we found
3010 for this particular function declaration defined an old style varargs
3011 function, then we want to issue a warning and just leave this function
3012 declaration unconverted. */
3014 if (other_variable_style_function (definition->ansi_decl))
3017 fprintf (stderr, "%s: %d: warning: varargs function declaration not converted\n",
3018 shortpath (NULL, def_dec_p->file->hash_entry->symbol),
3023 #endif /* !defined (UNPROTOIZE) */
3025 /* Setup here to recover from confusing source code detected during this
3026 particular "edit". */
3029 if (setjmp (source_confusion_recovery))
3031 restore_pointers ();
3032 fprintf (stderr, "%s: declaration of function `%s' not converted\n",
3033 pname, function_to_edit);
3037 /* We are editing a function declaration. The line number we did a seek to
3038 contains the comma or semicolon which follows the declaration. Our job
3039 now is to scan backwards looking for the function name. This name *must*
3040 be followed by open paren (ignoring whitespace, of course). We need to
3041 replace everything between that open paren and the corresponding closing
3042 paren. If we are protoizing, we need to insert the prototype-style
3043 formals lists. If we are unprotoizing, we need to just delete everything
3044 between the pairs of opening and closing parens. */
3046 /* First move up to the end of the line. */
3048 while (*clean_text_p != '\n')
3049 check_source (++clean_text_p < clean_text_limit, 0);
3050 clean_text_p--; /* Point to just before the newline character. */
3052 /* Now we can scan backwards for the function name. */
3058 /* Scan leftwards until we find some character which can be
3059 part of an identifier. */
3061 while (!is_id_char (*clean_text_p))
3062 check_source (--clean_text_p > clean_read_ptr, 0);
3064 /* Scan backwards until we find a char that cannot be part of an
3067 while (is_id_char (*clean_text_p))
3068 check_source (--clean_text_p > clean_read_ptr, 0);
3070 /* Having found an "id break", see if the following id is the one
3071 that we are looking for. If so, then exit from this loop. */
3073 if (!strncmp (clean_text_p+1, function_to_edit, func_name_len))
3075 char ch = *(clean_text_p + 1 + func_name_len);
3077 /* Must also check to see that the name in the source text
3078 ends where it should (in order to prevent bogus matches
3079 on similar but longer identifiers. */
3081 if (! is_id_char (ch))
3082 break; /* exit from loop */
3086 /* We have now found the first perfect match for the function name in
3087 our backward search. This may or may not be the actual function
3088 name at the start of the actual function declaration (i.e. we could
3089 have easily been mislead). We will try to avoid getting fooled too
3090 often by looking forward for the open paren which should follow the
3091 identifier we just found. We ignore whitespace while hunting. If
3092 the next non-whitespace byte we see is *not* an open left paren,
3093 then we must assume that we have been fooled and we start over
3094 again accordingly. Note that there is no guarantee, that even if
3095 we do see the open paren, that we are in the right place.
3096 Programmers do the strangest things sometimes! */
3098 end_of_fn_name = clean_text_p + strlen (def_dec_p->hash_entry->symbol);
3099 start_formals = forward_to_next_token_char (end_of_fn_name);
3101 while (*start_formals != '(');
3103 /* start_of_formals now points to the opening left paren which immediately
3104 follows the name of the function. */
3106 /* Note that there may be several formals lists which need to be modified
3107 due to the possibility that the return type of this function is a
3108 pointer-to-function type. If there are several formals lists, we
3109 convert them in left-to-right order here. */
3112 this_f_list_chain_item = definition->f_list_chain;
3113 #endif /* !defined (UNPROTOIZE) */
3120 end_formals = start_formals + 1;
3122 for (; depth; check_source (++end_formals < clean_text_limit, 0))
3124 switch (*end_formals)
3137 /* end_formals now points to the closing right paren of the formals
3138 list whose left paren is pointed to by start_formals. */
3140 /* Now, if we are protoizing, we insert the new ANSI-style formals list
3141 attached to the associated definition of this function. If however
3142 we are unprotoizing, then we simply delete any formals list which
3145 output_up_to (start_formals);
3147 if (this_f_list_chain_item)
3149 output_string (this_f_list_chain_item->formals_list);
3150 this_f_list_chain_item = this_f_list_chain_item->chain_next;
3155 fprintf (stderr, "%s: warning: too many parameter lists in declaration of `%s'\n",
3156 pname, def_dec_p->hash_entry->symbol);
3157 check_source (0, end_formals); /* leave the declaration intact */
3159 #endif /* !defined (UNPROTOIZE) */
3160 clean_read_ptr = end_formals - 1;
3162 /* Now see if it looks like there may be another formals list associated
3163 with the function declaration that we are converting (following the
3164 formals list that we just converted. */
3167 const char *another_r_paren = forward_to_next_token_char (end_formals);
3169 if ((*another_r_paren != ')')
3170 || (*(start_formals = forward_to_next_token_char (another_r_paren)) != '('))
3173 if (this_f_list_chain_item)
3176 fprintf (stderr, "\n%s: warning: too few parameter lists in declaration of `%s'\n",
3177 pname, def_dec_p->hash_entry->symbol);
3178 check_source (0, start_formals); /* leave the decl intact */
3180 #endif /* !defined (UNPROTOIZE) */
3186 /* There does appear to be yet another formals list, so loop around
3187 again, and convert it also. */
3191 /* Edit a whole group of formals lists, starting with the rightmost one
3192 from some set of formals lists. This routine is called once (from the
3193 outside) for each function declaration which is converted. It is
3194 recursive however, and it calls itself once for each remaining formal
3195 list that lies to the left of the one it was originally called to work
3196 on. Thus, a whole set gets done in right-to-left order.
3198 This routine returns non-zero if it thinks that it should not be trying
3199 to convert this particular function definition (because the name of the
3200 function doesn't match the one expected). */
3203 edit_formals_lists (end_formals, f_list_count, def_dec_p)
3204 const char *end_formals;
3205 unsigned int f_list_count;
3206 const def_dec_info *def_dec_p;
3208 const char *start_formals;
3211 start_formals = end_formals - 1;
3213 for (; depth; check_source (--start_formals > clean_read_ptr, 0))
3215 switch (*start_formals)
3227 /* start_formals now points to the opening left paren of the formals list. */
3233 const char *next_end;
3235 /* There should be more formal lists to the left of here. */
3237 next_end = start_formals - 1;
3238 check_source (next_end > clean_read_ptr, 0);
3239 while (isspace (*next_end))
3240 check_source (--next_end > clean_read_ptr, 0);
3241 check_source (*next_end == ')', next_end);
3242 check_source (--next_end > clean_read_ptr, 0);
3243 check_source (*next_end == ')', next_end);
3244 if (edit_formals_lists (next_end, f_list_count, def_dec_p))
3248 /* Check that the function name in the header we are working on is the same
3249 as the one we would expect to find. If not, issue a warning and return
3252 if (f_list_count == 0)
3254 const char *expected = def_dec_p->hash_entry->symbol;
3255 const char *func_name_start;
3256 const char *func_name_limit;
3257 size_t func_name_len;
3259 for (func_name_limit = start_formals-1; isspace (*func_name_limit); )
3260 check_source (--func_name_limit > clean_read_ptr, 0);
3262 for (func_name_start = func_name_limit++;
3263 is_id_char (*func_name_start);
3265 check_source (func_name_start > clean_read_ptr, 0);
3267 func_name_len = func_name_limit - func_name_start;
3268 if (func_name_len == 0)
3269 check_source (0, func_name_start);
3270 if (func_name_len != strlen (expected)
3271 || strncmp (func_name_start, expected, func_name_len))
3273 fprintf (stderr, "%s: %d: warning: found `%s' but expected `%s'\n",
3274 shortpath (NULL, def_dec_p->file->hash_entry->symbol),
3275 identify_lineno (func_name_start),
3276 dupnstr (func_name_start, func_name_len),
3282 output_up_to (start_formals);
3285 if (f_list_count == 0)
3286 output_string (def_dec_p->formal_names);
3287 #else /* !defined (UNPROTOIZE) */
3289 unsigned f_list_depth;
3290 const f_list_chain_item *flci_p = def_dec_p->f_list_chain;
3292 /* At this point, the current value of f_list count says how many
3293 links we have to follow through the f_list_chain to get to the
3294 particular formals list that we need to output next. */
3296 for (f_list_depth = 0; f_list_depth < f_list_count; f_list_depth++)
3297 flci_p = flci_p->chain_next;
3298 output_string (flci_p->formals_list);
3300 #endif /* !defined (UNPROTOIZE) */
3302 clean_read_ptr = end_formals - 1;
3306 /* Given a pointer to a byte in the clean text buffer which points to the
3307 beginning of a line that contains a "follower" token for a function
3308 definition header, do whatever is necessary to find the right closing
3309 paren for the rightmost formals list of the function definition header.
3313 find_rightmost_formals_list (clean_text_p)
3314 const char *clean_text_p;
3316 const char *end_formals;
3318 /* We are editing a function definition. The line number we did a seek
3319 to contains the first token which immediately follows the entire set of
3320 formals lists which are part of this particular function definition
3323 Our job now is to scan leftwards in the clean text looking for the
3324 right-paren which is at the end of the function header's rightmost
3327 If we ignore whitespace, this right paren should be the first one we
3328 see which is (ignoring whitespace) immediately followed either by the
3329 open curly-brace beginning the function body or by an alphabetic
3330 character (in the case where the function definition is in old (K&R)
3331 style and there are some declarations of formal parameters). */
3333 /* It is possible that the right paren we are looking for is on the
3334 current line (together with its following token). Just in case that
3335 might be true, we start out here by skipping down to the right end of
3336 the current line before starting our scan. */
3338 for (end_formals = clean_text_p; *end_formals != '\n'; end_formals++)
3344 /* Now scan backwards while looking for the right end of the rightmost
3345 formals list associated with this function definition. */
3349 const char *l_brace_p;
3351 /* Look leftward and try to find a right-paren. */
3353 while (*end_formals != ')')
3355 if (isspace (*end_formals))
3356 while (isspace (*end_formals))
3357 check_source (--end_formals > clean_read_ptr, 0);
3359 check_source (--end_formals > clean_read_ptr, 0);
3362 ch = *(l_brace_p = forward_to_next_token_char (end_formals));
3363 /* Since we are unprotoizing an ANSI-style (prototyped) function
3364 definition, there had better not be anything (except whitespace)
3365 between the end of the ANSI formals list and the beginning of the
3366 function body (i.e. the '{'). */
3368 check_source (ch == '{', l_brace_p);
3371 #else /* !defined (UNPROTOIZE) */
3373 /* Now scan backwards while looking for the right end of the rightmost
3374 formals list associated with this function definition. */
3379 const char *l_brace_p;
3381 /* Look leftward and try to find a right-paren. */
3383 while (*end_formals != ')')
3385 if (isspace (*end_formals))
3386 while (isspace (*end_formals))
3387 check_source (--end_formals > clean_read_ptr, 0);
3389 check_source (--end_formals > clean_read_ptr, 0);
3392 ch = *(l_brace_p = forward_to_next_token_char (end_formals));
3394 /* Since it is possible that we found a right paren before the starting
3395 '{' of the body which IS NOT the one at the end of the real K&R
3396 formals list (say for instance, we found one embedded inside one of
3397 the old K&R formal parameter declarations) we have to check to be
3398 sure that this is in fact the right paren that we were looking for.
3400 The one we were looking for *must* be followed by either a '{' or
3401 by an alphabetic character, while others *cannot* legally be followed
3402 by such characters. */
3404 if ((ch == '{') || isalpha (ch))
3407 /* At this point, we have found a right paren, but we know that it is
3408 not the one we were looking for, so backup one character and keep
3411 check_source (--end_formals > clean_read_ptr, 0);
3414 #endif /* !defined (UNPROTOIZE) */
3421 /* Insert into the output file a totally new declaration for a function
3422 which (up until now) was being called from within the current block
3423 without having been declared at any point such that the declaration
3424 was visible (i.e. in scope) at the point of the call.
3426 We need to add in explicit declarations for all such function calls
3427 in order to get the full benefit of prototype-based function call
3428 parameter type checking. */
3431 add_local_decl (def_dec_p, clean_text_p)
3432 const def_dec_info *def_dec_p;
3433 const char *clean_text_p;
3435 const char *start_of_block;
3436 const char *function_to_edit = def_dec_p->hash_entry->symbol;
3438 /* Don't insert new local explicit declarations unless explicitly requested
3444 /* Setup here to recover from confusing source code detected during this
3445 particular "edit". */
3448 if (setjmp (source_confusion_recovery))
3450 restore_pointers ();
3451 fprintf (stderr, "%s: local declaration for function `%s' not inserted\n",
3452 pname, function_to_edit);
3456 /* We have already done a seek to the start of the line which should
3457 contain *the* open curly brace which begins the block in which we need
3458 to insert an explicit function declaration (to replace the implicit one).
3460 Now we scan that line, starting from the left, until we find the
3461 open curly brace we are looking for. Note that there may actually be
3462 multiple open curly braces on the given line, but we will be happy
3463 with the leftmost one no matter what. */
3465 start_of_block = clean_text_p;
3466 while (*start_of_block != '{' && *start_of_block != '\n')
3467 check_source (++start_of_block < clean_text_limit, 0);
3469 /* Note that the line from the original source could possibly
3470 contain *no* open curly braces! This happens if the line contains
3471 a macro call which expands into a chunk of text which includes a
3472 block (and that block's associated open and close curly braces).
3473 In cases like this, we give up, issue a warning, and do nothing. */
3475 if (*start_of_block != '{')
3479 "\n%s: %d: warning: can't add declaration of `%s' into macro call\n",
3480 def_dec_p->file->hash_entry->symbol, def_dec_p->line,
3481 def_dec_p->hash_entry->symbol);
3485 /* Figure out what a nice (pretty) indentation would be for the new
3486 declaration we are adding. In order to do this, we must scan forward
3487 from the '{' until we find the first line which starts with some
3488 non-whitespace characters (i.e. real "token" material). */
3491 const char *ep = forward_to_next_token_char (start_of_block) - 1;
3494 /* Now we have ep pointing at the rightmost byte of some existing indent
3495 stuff. At least that is the hope.
3497 We can now just scan backwards and find the left end of the existing
3498 indentation string, and then copy it to the output buffer. */
3500 for (sp = ep; isspace (*sp) && *sp != '\n'; sp--)
3503 /* Now write out the open { which began this block, and any following
3504 trash up to and including the last byte of the existing indent that
3509 /* Now we go ahead and insert the new declaration at this point.
3511 If the definition of the given function is in the same file that we
3512 are currently editing, and if its full ANSI declaration normally
3513 would start with the keyword `extern', suppress the `extern'. */
3516 const char *decl = def_dec_p->definition->ansi_decl;
3518 if ((*decl == 'e') && (def_dec_p->file == def_dec_p->definition->file))
3520 output_string (decl);
3523 /* Finally, write out a new indent string, just like the preceding one
3524 that we found. This will typically include a newline as the first
3525 character of the indent string. */
3527 output_bytes (sp, (size_t) (ep - sp) + 1);
3531 /* Given a pointer to a file_info record, and a pointer to the beginning
3532 of a line (in the clean text buffer) which is assumed to contain the
3533 first "follower" token for the first function definition header in the
3534 given file, find a good place to insert some new global function
3535 declarations (which will replace scattered and imprecise implicit ones)
3536 and then insert the new explicit declaration at that point in the file. */
3539 add_global_decls (file_p, clean_text_p)
3540 const file_info *file_p;
3541 const char *clean_text_p;
3543 const def_dec_info *dd_p;
3546 /* Setup here to recover from confusing source code detected during this
3547 particular "edit". */
3550 if (setjmp (source_confusion_recovery))
3552 restore_pointers ();
3553 fprintf (stderr, "%s: global declarations for file `%s' not inserted\n",
3554 pname, shortpath (NULL, file_p->hash_entry->symbol));
3558 /* Start by finding a good location for adding the new explicit function
3559 declarations. To do this, we scan backwards, ignoring whitespace
3560 and comments and other junk until we find either a semicolon, or until
3561 we hit the beginning of the file. */
3563 scan_p = find_rightmost_formals_list (clean_text_p);
3566 if (scan_p < clean_text_base)
3568 check_source (scan_p > clean_read_ptr, 0);
3573 /* scan_p now points either to a semicolon, or to just before the start
3574 of the whole file. */
3576 /* Now scan forward for the first non-whitespace character. In theory,
3577 this should be the first character of the following function definition
3578 header. We will put in the added declarations just prior to that. */
3581 while (isspace (*scan_p))
3585 output_up_to (scan_p);
3587 /* Now write out full prototypes for all of the things that had been
3588 implicitly declared in this file (but only those for which we were
3589 actually able to find unique matching definitions). Avoid duplicates
3590 by marking things that we write out as we go. */
3593 int some_decls_added = 0;
3595 for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
3596 if (dd_p->is_implicit && dd_p->definition && !dd_p->definition->written)
3598 const char *decl = dd_p->definition->ansi_decl;
3600 /* If the function for which we are inserting a declaration is
3601 actually defined later in the same file, then suppress the
3602 leading `extern' keyword (if there is one). */
3604 if (*decl == 'e' && (dd_p->file == dd_p->definition->file))
3607 output_string ("\n");
3608 output_string (decl);
3609 some_decls_added = 1;
3610 ((NONCONST def_dec_info *) dd_p->definition)->written = 1;
3612 if (some_decls_added)
3613 output_string ("\n\n");
3616 /* Unmark all of the definitions that we just marked. */
3618 for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
3619 if (dd_p->definition)
3620 ((NONCONST def_dec_info *) dd_p->definition)->written = 0;
3623 #endif /* !defined (UNPROTOIZE) */
3625 /* Do the editing operation specifically for a function "definition". Note
3626 that editing operations for function "declarations" are handled by a
3627 separate routine above. */
3630 edit_fn_definition (def_dec_p, clean_text_p)
3631 const def_dec_info *def_dec_p;
3632 const char *clean_text_p;
3634 const char *end_formals;
3635 const char *function_to_edit = def_dec_p->hash_entry->symbol;
3637 /* Setup here to recover from confusing source code detected during this
3638 particular "edit". */
3641 if (setjmp (source_confusion_recovery))
3643 restore_pointers ();
3644 fprintf (stderr, "%s: definition of function `%s' not converted\n",
3645 pname, function_to_edit);
3649 end_formals = find_rightmost_formals_list (clean_text_p);
3651 /* end_of_formals now points to the closing right paren of the rightmost
3652 formals list which is actually part of the `header' of the function
3653 definition that we are converting. */
3655 /* If the header of this function definition looks like it declares a
3656 function with a variable number of arguments, and if the way it does
3657 that is different from that way we would like it (i.e. varargs vs.
3658 stdarg) then issue a warning and leave the header unconverted. */
3660 if (other_variable_style_function (def_dec_p->ansi_decl))
3663 fprintf (stderr, "%s: %d: warning: definition of %s not converted\n",
3664 shortpath (NULL, def_dec_p->file->hash_entry->symbol),
3665 identify_lineno (end_formals),
3667 output_up_to (end_formals);
3671 if (edit_formals_lists (end_formals, def_dec_p->f_list_count, def_dec_p))
3673 restore_pointers ();
3674 fprintf (stderr, "%s: definition of function `%s' not converted\n",
3675 pname, function_to_edit);
3679 /* Have to output the last right paren because this never gets flushed by
3680 edit_formals_list. */
3682 output_up_to (end_formals);
3687 const char *semicolon_p;
3688 const char *limit_p;
3690 int had_newlines = 0;
3692 /* Now write out the K&R style formal declarations, one per line. */
3694 decl_p = def_dec_p->formal_decls;
3695 limit_p = decl_p + strlen (decl_p);
3696 for (;decl_p < limit_p; decl_p = semicolon_p + 2)
3698 for (semicolon_p = decl_p; *semicolon_p != ';'; semicolon_p++)
3700 output_string ("\n");
3701 output_string (indent_string);
3702 output_bytes (decl_p, (size_t) ((semicolon_p + 1) - decl_p));
3705 /* If there are no newlines between the end of the formals list and the
3706 start of the body, we should insert one now. */
3708 for (scan_p = end_formals+1; *scan_p != '{'; )
3710 if (*scan_p == '\n')
3715 check_source (++scan_p < clean_text_limit, 0);
3718 output_string ("\n");
3720 #else /* !defined (UNPROTOIZE) */
3721 /* If we are protoizing, there may be some flotsum & jetsum (like comments
3722 and preprocessing directives) after the old formals list but before
3723 the following { and we would like to preserve that stuff while effectively
3724 deleting the existing K&R formal parameter declarations. We do so here
3725 in a rather tricky way. Basically, we white out any stuff *except*
3726 the comments/pp-directives in the original text buffer, then, if there
3727 is anything in this area *other* than whitespace, we output it. */
3729 const char *end_formals_orig;
3730 const char *start_body;
3731 const char *start_body_orig;
3733 const char *scan_orig;
3734 int have_flotsum = 0;
3735 int have_newlines = 0;
3737 for (start_body = end_formals + 1; *start_body != '{';)
3738 check_source (++start_body < clean_text_limit, 0);
3740 end_formals_orig = orig_text_base + (end_formals - clean_text_base);
3741 start_body_orig = orig_text_base + (start_body - clean_text_base);
3742 scan = end_formals + 1;
3743 scan_orig = end_formals_orig + 1;
3744 for (; scan < start_body; scan++, scan_orig++)
3746 if (*scan == *scan_orig)
3748 have_newlines |= (*scan_orig == '\n');
3749 /* Leave identical whitespace alone. */
3750 if (!isspace (*scan_orig))
3751 *((NONCONST char *)scan_orig) = ' '; /* identical - so whiteout */
3757 output_bytes (end_formals_orig + 1,
3758 (size_t) (start_body_orig - end_formals_orig) - 1);
3761 output_string ("\n");
3763 output_string (" ");
3764 clean_read_ptr = start_body - 1;
3766 #endif /* !defined (UNPROTOIZE) */
3769 /* Clean up the clean text buffer. Do this by converting comments and
3770 preprocessor directives into spaces. Also convert line continuations
3771 into whitespace. Also, whiteout string and character literals. */
3774 do_cleaning (new_clean_text_base, new_clean_text_limit)
3775 char *new_clean_text_base;
3776 char *new_clean_text_limit;
3779 int non_whitespace_since_newline = 0;
3781 for (scan_p = new_clean_text_base; scan_p < new_clean_text_limit; scan_p++)
3785 case '/': /* Handle comments. */
3786 if (scan_p[1] != '*')
3788 non_whitespace_since_newline = 1;
3792 while (scan_p[1] != '/' || scan_p[0] != '*')
3794 if (!isspace (*scan_p))
3796 if (++scan_p >= new_clean_text_limit)
3803 case '#': /* Handle pp directives. */
3804 if (non_whitespace_since_newline)
3807 while (scan_p[1] != '\n' || scan_p[0] == '\\')
3809 if (!isspace (*scan_p))
3811 if (++scan_p >= new_clean_text_limit)
3817 case '\'': /* Handle character literals. */
3818 non_whitespace_since_newline = 1;
3819 while (scan_p[1] != '\'' || scan_p[0] == '\\')
3821 if (scan_p[0] == '\\' && !isspace (scan_p[1]))
3823 if (!isspace (*scan_p))
3825 if (++scan_p >= new_clean_text_limit)
3831 case '"': /* Handle string literals. */
3832 non_whitespace_since_newline = 1;
3833 while (scan_p[1] != '"' || scan_p[0] == '\\')
3835 if (scan_p[0] == '\\' && !isspace (scan_p[1]))
3837 if (!isspace (*scan_p))
3839 if (++scan_p >= new_clean_text_limit)
3845 case '\\': /* Handle line continuations. */
3846 if (scan_p[1] != '\n')
3852 non_whitespace_since_newline = 0; /* Reset. */
3861 break; /* Whitespace characters. */
3865 non_whitespace_since_newline = 1;
3871 /* Given a pointer to the closing right parenthesis for a particular formals
3872 list (in the clean text buffer) find the corresponding left parenthesis
3873 and return a pointer to it. */
3876 careful_find_l_paren (p)
3882 for (paren_depth = 1, q = p-1; paren_depth; check_source (--q >= clean_text_base, 0))
3897 /* Scan the clean text buffer for cases of function definitions that we
3898 don't really know about because they were preprocessed out when the
3899 aux info files were created.
3901 In this version of protoize/unprotoize we just give a warning for each
3902 one found. A later version may be able to at least unprotoize such
3905 Note that we may easily find all function definitions simply by
3906 looking for places where there is a left paren which is (ignoring
3907 whitespace) immediately followed by either a left-brace or by an
3908 upper or lower case letter. Whenever we find this combination, we
3909 have also found a function definition header.
3911 Finding function *declarations* using syntactic clues is much harder.
3912 I will probably try to do this in a later version though. */
3915 scan_for_missed_items (file_p)
3916 const file_info *file_p;
3918 static const char *scan_p;
3919 const char *limit = clean_text_limit - 3;
3920 static const char *backup_limit;
3922 backup_limit = clean_text_base - 1;
3924 for (scan_p = clean_text_base; scan_p < limit; scan_p++)
3928 static const char *last_r_paren;
3929 const char *ahead_p;
3931 last_r_paren = scan_p;
3933 for (ahead_p = scan_p + 1; isspace (*ahead_p); )
3934 check_source (++ahead_p < limit, limit);
3936 scan_p = ahead_p - 1;
3938 if (isalpha (*ahead_p) || *ahead_p == '{')
3940 const char *last_l_paren;
3941 const int lineno = identify_lineno (ahead_p);
3943 if (setjmp (source_confusion_recovery))
3946 /* We know we have a function definition header. Now skip
3947 leftwards over all of its associated formals lists. */
3951 last_l_paren = careful_find_l_paren (last_r_paren);
3952 for (last_r_paren = last_l_paren-1; isspace (*last_r_paren); )
3953 check_source (--last_r_paren >= backup_limit, backup_limit);
3955 while (*last_r_paren == ')');
3957 if (is_id_char (*last_r_paren))
3959 const char *id_limit = last_r_paren + 1;
3960 const char *id_start;
3962 const def_dec_info *dd_p;
3964 for (id_start = id_limit-1; is_id_char (*id_start); )
3965 check_source (--id_start >= backup_limit, backup_limit);
3967 backup_limit = id_start;
3968 if ((id_length = (size_t) (id_limit - id_start)) == 0)
3972 char *func_name = (char *) alloca (id_length + 1);
3973 static const char * const stmt_keywords[]
3974 = { "if", "while", "for", "switch", "return", 0 };
3975 const char * const *stmt_keyword;
3977 strncpy (func_name, id_start, id_length);
3978 func_name[id_length] = '\0';
3980 /* We must check here to see if we are actually looking at
3981 a statement rather than an actual function call. */
3983 for (stmt_keyword = stmt_keywords; *stmt_keyword; stmt_keyword++)
3984 if (!strcmp (func_name, *stmt_keyword))
3988 fprintf (stderr, "%s: found definition of `%s' at %s(%d)\n",
3991 shortpath (NULL, file_p->hash_entry->symbol),
3992 identify_lineno (id_start));
3994 /* We really should check for a match of the function name
3995 here also, but why bother. */
3997 for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
3998 if (dd_p->is_func_def && dd_p->line == lineno)
4001 /* If we make it here, then we did not know about this
4002 function definition. */
4004 fprintf (stderr, "%s: %d: warning: `%s' excluded by preprocessing\n",
4005 shortpath (NULL, file_p->hash_entry->symbol),
4006 identify_lineno (id_start), func_name);
4007 fprintf (stderr, "%s: function definition not converted\n",
4017 /* Do all editing operations for a single source file (either a "base" file
4018 or an "include" file). To do this we read the file into memory, keep a
4019 virgin copy there, make another cleaned in-core copy of the original file
4020 (i.e. one in which all of the comments and preprocessor directives have
4021 been replaced with whitespace), then use these two in-core copies of the
4022 file to make a new edited in-core copy of the file. Finally, rename the
4023 original file (as a way of saving it), and then write the edited version
4024 of the file from core to a disk file of the same name as the original.
4026 Note that the trick of making a copy of the original sans comments &
4027 preprocessor directives make the editing a whole lot easier. */
4031 const hash_table_entry *hp;
4033 struct stat stat_buf;
4034 const file_info *file_p = hp->fip;
4035 char *new_orig_text_base;
4036 char *new_orig_text_limit;
4037 char *new_clean_text_base;
4038 char *new_clean_text_limit;
4041 int first_definition_in_file;
4043 /* If we are not supposed to be converting this file, or if there is
4044 nothing in there which needs converting, just skip this file. */
4046 if (!needs_to_be_converted (file_p))
4049 convert_filename = file_p->hash_entry->symbol;
4051 /* Convert a file if it is in a directory where we want conversion
4052 and the file is not excluded. */
4054 if (!directory_specified_p (convert_filename)
4055 || file_excluded_p (convert_filename))
4059 /* Don't even mention "system" include files unless we are
4060 protoizing. If we are protoizing, we mention these as a
4061 gentle way of prodding the user to convert his "system"
4062 include files to prototype format. */
4063 && !in_system_include_dir (convert_filename)
4064 #endif /* defined (UNPROTOIZE) */
4066 fprintf (stderr, "%s: `%s' not converted\n",
4067 pname, shortpath (NULL, convert_filename));
4071 /* Let the user know what we are up to. */
4074 fprintf (stderr, "%s: would convert file `%s'\n",
4075 pname, shortpath (NULL, convert_filename));
4077 fprintf (stderr, "%s: converting file `%s'\n",
4078 pname, shortpath (NULL, convert_filename));
4081 /* Find out the size (in bytes) of the original file. */
4083 /* The cast avoids an erroneous warning on AIX. */
4084 if (my_stat ((char *)convert_filename, &stat_buf) == -1)
4086 fprintf (stderr, "%s: can't get status for file `%s': %s\n",
4087 pname, shortpath (NULL, convert_filename), sys_errlist[errno]);
4090 orig_size = stat_buf.st_size;
4092 /* Allocate a buffer to hold the original text. */
4094 orig_text_base = new_orig_text_base = (char *) xmalloc (orig_size + 2);
4095 orig_text_limit = new_orig_text_limit = new_orig_text_base + orig_size;
4097 /* Allocate a buffer to hold the cleaned-up version of the original text. */
4099 clean_text_base = new_clean_text_base = (char *) xmalloc (orig_size + 2);
4100 clean_text_limit = new_clean_text_limit = new_clean_text_base + orig_size;
4101 clean_read_ptr = clean_text_base - 1;
4103 /* Allocate a buffer that will hopefully be large enough to hold the entire
4104 converted output text. As an initial guess for the maximum size of the
4105 output buffer, use 125% of the size of the original + some extra. This
4106 buffer can be expanded later as needed. */
4108 repl_size = orig_size + (orig_size >> 2) + 4096;
4109 repl_text_base = (char *) xmalloc (repl_size + 2);
4110 repl_text_limit = repl_text_base + repl_size - 1;
4111 repl_write_ptr = repl_text_base - 1;
4116 /* Open the file to be converted in READ ONLY mode. */
4118 if ((input_file = my_open (convert_filename, O_RDONLY, 0444)) == -1)
4120 fprintf (stderr, "%s: can't open file `%s' for reading: %s\n",
4121 pname, shortpath (NULL, convert_filename),
4122 sys_errlist[errno]);
4126 /* Read the entire original source text file into the original text buffer
4127 in one swell fwoop. Then figure out where the end of the text is and
4128 make sure that it ends with a newline followed by a null. */
4130 if (read (input_file, new_orig_text_base, orig_size) != orig_size)
4133 fprintf (stderr, "\n%s: error reading input file `%s': %s\n",
4134 pname, shortpath (NULL, convert_filename),
4135 sys_errlist[errno]);
4142 if (orig_size == 0 || orig_text_limit[-1] != '\n')
4144 *new_orig_text_limit++ = '\n';
4148 /* Create the cleaned up copy of the original text. */
4150 memcpy (new_clean_text_base, orig_text_base,
4151 (size_t) (orig_text_limit - orig_text_base));
4152 do_cleaning (new_clean_text_base, new_clean_text_limit);
4157 size_t clean_size = orig_text_limit - orig_text_base;
4158 char *const clean_filename = (char *) alloca (strlen (convert_filename) + 6 + 1);
4160 /* Open (and create) the clean file. */
4162 strcpy (clean_filename, convert_filename);
4163 strcat (clean_filename, ".clean");
4164 if ((clean_file = creat (clean_filename, 0666)) == -1)
4166 fprintf (stderr, "%s: can't create/open clean file `%s': %s\n",
4167 pname, shortpath (NULL, clean_filename),
4168 sys_errlist[errno]);
4172 /* Write the clean file. */
4174 if (write (clean_file, new_clean_text_base, clean_size) != clean_size)
4175 fprintf (stderr, "%s: error writing file `%s': %s\n",
4176 pname, shortpath (NULL, clean_filename), sys_errlist[errno]);
4182 /* Do a simplified scan of the input looking for things that were not
4183 mentioned in the aux info files because of the fact that they were
4184 in a region of the source which was preprocessed-out (via #if or
4187 scan_for_missed_items (file_p);
4189 /* Setup to do line-oriented forward seeking in the clean text buffer. */
4191 last_known_line_number = 1;
4192 last_known_line_start = clean_text_base;
4194 /* Now get down to business and make all of the necessary edits. */
4197 const def_dec_info *def_dec_p;
4199 first_definition_in_file = 1;
4200 def_dec_p = file_p->defs_decs;
4201 for (; def_dec_p; def_dec_p = def_dec_p->next_in_file)
4203 const char *clean_text_p = seek_to_line (def_dec_p->line);
4205 /* clean_text_p now points to the first character of the line which
4206 contains the `terminator' for the declaration or definition that
4207 we are about to process. */
4211 if (global_flag && def_dec_p->is_func_def && first_definition_in_file)
4213 add_global_decls (def_dec_p->file, clean_text_p);
4214 first_definition_in_file = 0;
4217 /* Don't edit this item if it is already in prototype format or if it
4218 is a function declaration and we have found no corresponding
4221 if (def_dec_p->prototyped
4222 || (!def_dec_p->is_func_def && !def_dec_p->definition))
4225 #endif /* !defined (UNPROTOIZE) */
4227 if (def_dec_p->is_func_def)
4228 edit_fn_definition (def_dec_p, clean_text_p);
4231 if (def_dec_p->is_implicit)
4232 add_local_decl (def_dec_p, clean_text_p);
4234 #endif /* !defined (UNPROTOIZE) */
4235 edit_fn_declaration (def_dec_p, clean_text_p);
4239 /* Finalize things. Output the last trailing part of the original text. */
4241 output_up_to (clean_text_limit - 1);
4243 /* If this is just a test run, stop now and just deallocate the buffers. */
4247 free (new_orig_text_base);
4248 free (new_clean_text_base);
4249 free (repl_text_base);
4253 /* Change the name of the original input file. This is just a quick way of
4254 saving the original file. */
4258 char *new_filename =
4259 (char *) xmalloc (strlen (convert_filename) + strlen (save_suffix) + 2);
4261 strcpy (new_filename, convert_filename);
4262 strcat (new_filename, save_suffix);
4263 if (my_link (convert_filename, new_filename) == -1)
4265 if (errno == EEXIST)
4268 fprintf (stderr, "%s: warning: file `%s' already saved in `%s'\n",
4270 shortpath (NULL, convert_filename),
4271 shortpath (NULL, new_filename));
4275 fprintf (stderr, "%s: can't link file `%s' to `%s': %s\n",
4277 shortpath (NULL, convert_filename),
4278 shortpath (NULL, new_filename),
4279 sys_errlist[errno]);
4285 if (my_unlink (convert_filename) == -1)
4287 fprintf (stderr, "%s: can't delete file `%s': %s\n",
4288 pname, shortpath (NULL, convert_filename), sys_errlist[errno]);
4295 /* Open (and create) the output file. */
4297 if ((output_file = creat (convert_filename, 0666)) == -1)
4299 fprintf (stderr, "%s: can't create/open output file `%s': %s\n",
4300 pname, shortpath (NULL, convert_filename),
4301 sys_errlist[errno]);
4305 /* Write the output file. */
4308 unsigned int out_size = (repl_write_ptr + 1) - repl_text_base;
4310 if (write (output_file, repl_text_base, out_size) != out_size)
4311 fprintf (stderr, "%s: error writing file `%s': %s\n",
4312 pname, shortpath (NULL, convert_filename),
4313 sys_errlist[errno]);
4316 close (output_file);
4319 /* Deallocate the conversion buffers. */
4321 free (new_orig_text_base);
4322 free (new_clean_text_base);
4323 free (repl_text_base);
4325 /* Change the mode of the output file to match the original file. */
4327 /* The cast avoids an erroneous warning on AIX. */
4328 if (my_chmod ((char *)convert_filename, stat_buf.st_mode) == -1)
4329 fprintf (stderr, "%s: can't change mode of file `%s': %s\n",
4330 pname, shortpath (NULL, convert_filename), sys_errlist[errno]);
4332 /* Note: We would try to change the owner and group of the output file
4333 to match those of the input file here, except that may not be a good
4334 thing to do because it might be misleading. Also, it might not even
4335 be possible to do that (on BSD systems with quotas for instance). */
4338 /* Do all of the individual steps needed to do the protoization (or
4339 unprotoization) of the files referenced in the aux_info files given
4340 in the command line. */
4345 const char * const *base_pp;
4346 const char * const * const end_pps
4347 = &base_source_filenames[n_base_source_files];
4351 #endif /* !defined (UNPROTOIZE) */
4353 /* One-by-one, check (and create if necessary), open, and read all of the
4354 stuff in each aux_info file. After reading each aux_info file, the
4355 aux_info_file just read will be automatically deleted unless the
4356 keep_flag is set. */
4358 for (base_pp = base_source_filenames; base_pp < end_pps; base_pp++)
4359 process_aux_info_file (*base_pp, keep_flag, 0);
4363 /* Also open and read the special SYSCALLS.c aux_info file which gives us
4364 the prototypes for all of the standard system-supplied functions. */
4366 if (nondefault_syscalls_dir)
4368 syscalls_absolute_filename
4369 = (char *) xmalloc (strlen (nondefault_syscalls_dir)
4370 + sizeof (syscalls_filename) + 1);
4371 strcpy (syscalls_absolute_filename, nondefault_syscalls_dir);
4375 syscalls_absolute_filename
4376 = (char *) xmalloc (strlen (default_syscalls_dir)
4377 + sizeof (syscalls_filename) + 1);
4378 strcpy (syscalls_absolute_filename, default_syscalls_dir);
4381 syscalls_len = strlen (syscalls_absolute_filename);
4382 if (*(syscalls_absolute_filename + syscalls_len - 1) != '/')
4384 *(syscalls_absolute_filename + syscalls_len++) = '/';
4385 *(syscalls_absolute_filename + syscalls_len) = '\0';
4387 strcat (syscalls_absolute_filename, syscalls_filename);
4389 /* Call process_aux_info_file in such a way that it does not try to
4390 delete the SYSCALLS aux_info file. */
4392 process_aux_info_file (syscalls_absolute_filename, 1, 1);
4394 #endif /* !defined (UNPROTOIZE) */
4396 /* When we first read in all of the information from the aux_info files
4397 we saved in it descending line number order, because that was likely to
4398 be faster. Now however, we want the chains of def & dec records to
4399 appear in ascending line number order as we get further away from the
4400 file_info record that they hang from. The following line causes all of
4401 these lists to be rearranged into ascending line number order. */
4403 visit_each_hash_node (filename_primary, reverse_def_dec_list);
4407 /* Now do the "real" work. The following line causes each declaration record
4408 to be "visited". For each of these nodes, an attempt is made to match
4409 up the function declaration with a corresponding function definition,
4410 which should have a full prototype-format formals list with it. Once
4411 these match-ups are made, the conversion of the function declarations
4412 to prototype format can be made. */
4414 visit_each_hash_node (function_name_primary, connect_defs_and_decs);
4416 #endif /* !defined (UNPROTOIZE) */
4418 /* Now convert each file that can be converted (and needs to be). */
4420 visit_each_hash_node (filename_primary, edit_file);
4424 /* If we are working in cplusplus mode, try to rename all .c files to .C
4425 files. Don't panic if some of the renames don't work. */
4427 if (cplusplus_flag && !nochange_flag)
4428 visit_each_hash_node (filename_primary, rename_c_file);
4430 #endif /* !defined (UNPROTOIZE) */
4433 static struct option longopts[] =
4435 {"version", 0, 0, 'V'},
4436 {"file_name", 0, 0, 'p'},
4437 {"quiet", 0, 0, 'q'},
4438 {"silent", 0, 0, 'q'},
4439 {"force", 0, 0, 'f'},
4440 {"keep", 0, 0, 'k'},
4441 {"nosave", 0, 0, 'N'},
4442 {"nochange", 0, 0, 'n'},
4443 {"compiler-options", 1, 0, 'c'},
4444 {"exclude", 1, 0, 'x'},
4445 {"directory", 1, 0, 'd'},
4447 {"indent", 1, 0, 'i'},
4449 {"local", 0, 0, 'l'},
4450 {"global", 0, 0, 'g'},
4452 {"syscalls-dir", 1, 0, 'B'},
4464 const char *params = "";
4466 pname = rindex (argv[0], '/');
4467 pname = pname ? pname+1 : argv[0];
4469 cwd_buffer = getpwd ();
4472 fprintf (stderr, "%s: cannot get working directory: %s\n",
4473 pname, sys_errlist[errno]);
4477 /* By default, convert the files in the current directory. */
4478 directory_list = string_list_cons (cwd_buffer, NULL);
4480 while ((c = getopt_long (argc, argv,
4484 "B:c:Cd:gklnNp:qvVx:",
4486 longopts, &longind)) != EOF)
4488 if (c == 0) /* Long option. */
4489 c = longopts[longind].val;
4493 compiler_file_name = optarg;
4497 = string_list_cons (abspath (NULL, optarg), directory_list);
4500 exclude_list = string_list_cons (optarg, exclude_list);
4530 indent_string = optarg;
4532 #else /* !defined (UNPROTOIZE) */
4543 nondefault_syscalls_dir = optarg;
4545 #endif /* !defined (UNPROTOIZE) */
4551 /* Set up compile_params based on -p and -c options. */
4552 munge_compile_params (params);
4554 n_base_source_files = argc - optind;
4556 /* Now actually make a list of the base source filenames. */
4558 base_source_filenames =
4559 (const char **) xmalloc ((n_base_source_files + 1) * sizeof (char *));
4560 n_base_source_files = 0;
4561 for (; optind < argc; optind++)
4563 const char *path = abspath (NULL, argv[optind]);
4564 int len = strlen (path);
4566 if (path[len-1] == 'c' && path[len-2] == '.')
4567 base_source_filenames[n_base_source_files++] = path;
4570 fprintf (stderr, "%s: input file names must have .c suffixes: %s\n",
4571 pname, shortpath (NULL, path));
4577 /* We are only interested in the very first identifier token in the
4578 definition of `va_list', so if there is more junk after that first
4579 identifier token, delete it from the `varargs_style_indicator'. */
4583 for (cp = varargs_style_indicator; isalnum (*cp) || *cp == '_'; cp++)
4586 varargs_style_indicator = savestring (varargs_style_indicator,
4587 cp - varargs_style_indicator);
4589 #endif /* !defined (UNPROTOIZE) */
4596 fprintf (stderr, "%s: %s\n", pname, version_string);