gcc/fix-header.c

   1 /* fix-header.c - Make C header file suitable for C++.
   2    Copyright (C) 1993, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
   3
   4 This program is free software; you can redistribute it and/or modify it
   5 under the terms of the GNU General Public License as published by the
   6 Free Software Foundation; either version 2, or (at your option) any
   7 later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* This program massages a system include file (such as stdio.h),
  19    into a form that is compatible with GNU C and GNU C++.
  20
  21    * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
  22    if they seem to be needed.  These prevent C++ compilers from name
  23    mangling the functions inside the braces.
  24
  25    * If an old-style incomplete function declaration is seen (without
  26    an argument list), and it is a "standard" function listed in
  27    the file sys-protos.h (and with a non-empty argument list), then
  28    the declaration is converted to a complete prototype by replacing
  29    the empty parameter list with the argument lust from sys-protos.h.
  30
  31    * The program can be given a list of (names of) required standard
  32    functions (such as fclose for stdio.h).  If a required function
  33    is not seen in the input, then a prototype for it will be
  34    written to the output.
  35
  36    * If all of the non-comment code of the original file is protected
  37    against multiple inclusion:
  38         #ifndef FOO
  39         #define FOO
  40         <body of include file>
  41         #endif
  42    then extra matter added to the include file is placed inside the <body>.
  43
  44    * If the input file is OK (nothing needs to be done);
  45    the output file is not written (nor removed if it exists).
  46
  47    There are also some special actions that are done for certain
  48    well-known standard include files:
  49
  50    * If argv[1] is "sys/stat.h", the Posix.1 macros
  51    S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
  52    they were missing, and the corresponding "traditional" S_IFxxx
  53    macros were defined.
  54
  55    * If argv[1] is "errno.h", errno is declared if it was missing.
  56
  57    * TODO:  The input file should be read complete into memory, because:
  58    a) it needs to be scanned twice anyway, and
  59    b) it would be nice to allow update in place.
  60
  61    Usage:
  62         fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
  63    where:
  64    * FOO.H is the relative file name of the include file,
  65    as it would be #include'd by a C file.  (E.g. stdio.h)
  66    * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
  67    * OUTFILE.H is the full pathname for where to write the output file,
  68    if anything needs to be done.  (e.g. ./include/stdio.h)
  69    * OPTIONS are such as you would pass to cpp.
  70
  71    Written by Per Bothner <bothner@cygnus.com>, July 1993.  */
  72
  73 #include "hconfig.h"
  74 #include "system.h"
  75 #include "obstack.h"
  76 #include "scan.h"
  77 #include "cpplib.h"
  78 #include "gansidecl.h"
  79
  80 extern void cpp_fatal ();
  81
  82 #if !__STDC__ && !defined(const)
  83 #define const /* nothing */
  84 #endif
  85
  86 sstring buf;
  87
  88 int verbose = 0;
  89 int partial_count = 0;
  90 int warnings = 0;
  91
  92 /* We no longer need to add extern "C", because cpp implicitly
  93    forces the standard include files to be treated as C.  */
  94 /*#define ADD_MISSING_EXTERN_C 1 */
  95
  96 #if ADD_MISSING_EXTERN_C
  97 int missing_extern_C_count = 0;
  98 #endif
  99
 100 #include "xsys-protos.h"
 101
 102 #ifdef FIXPROTO_IGNORE_LIST
 103 /* This is a currently unused feature.  */
 104
 105 /* List of files and directories to ignore.
 106    A directory name (ending in '/') means ignore anything in that
 107    directory.  (It might be more efficient to do directory pruning
 108    earlier in fixproto, but this is simpler and easier to customize.) */
 109
 110 static char *files_to_ignore[] = {
 111   "X11/",
 112   FIXPROTO_IGNORE_LIST
 113   0
 114 };
 115 #endif
 116
 117 char *inf_buffer;
 118 char *inf_limit;
 119 char *inf_ptr;
 120
 121 /* Certain standard files get extra treatment */
 122
 123 enum special_file
 124 {
 125   no_special,
 126   errno_h,
 127   stdio_h,
 128   stdlib_h,
 129   sys_stat_h
 130 };
 131
 132 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
 133    by an empty name (i.e. by "\0\0").  */
 134
 135 typedef const char *namelist;
 136
 137 /* The following macros provide the bits for symbol_flags.  */
 138 typedef int symbol_flags;
 139
 140 /* Used to mark names defined in the ANSI/ISO C standard.  */
 141 #define ANSI_SYMBOL 1
 142
 143 /* We no longer massage include files for POSIX or XOPEN symbols,
 144    as there are now several versions of the POSIX and XOPEN standards,
 145    and it would be a maintenance nightmare for us to track them all.
 146    Better to be compatible with the system include files.  */
 147 /*#define ADD_MISSING_POSIX 1 */
 148 /*#define ADD_MISSING_XOPEN 1 */
 149
 150 #if ADD_MISSING_POSIX
 151 /* Used to mark names defined in the Posix.1 or Posix.2 standard.  */
 152 #define POSIX1_SYMBOL 2
 153 #define POSIX2_SYMBOL 4
 154 #else
 155 #define POSIX1_SYMBOL 0
 156 #define POSIX2_SYMBOL 0
 157 #endif
 158
 159 #if ADD_MISSING_XOPEN
 160 /* Used to mark names defined in X/Open Portability Guide.  */
 161 #define XOPEN_SYMBOL 8
 162 /* Used to mark names defined in X/Open UNIX Extensions.  */
 163 #define XOPEN_EXTENDED_SYMBOL 16
 164 #else
 165 #define XOPEN_SYMBOL 0
 166 #define XOPEN_EXTENDED_SYMBOL 0
 167 #endif
 168
 169 /* Used to indicate names that are not functions */
 170 #define MACRO_SYMBOL 512
 171
 172 struct symbol_list {
 173   symbol_flags flags;
 174   namelist names;
 175 };
 176
 177 #define SYMBOL_TABLE_SIZE 10
 178 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
 179 int cur_symbol_table_size;
 180
 181 void
 182 add_symbols (flags, names)
 183      symbol_flags flags;
 184      namelist names;
 185 {
 186   symbol_table[cur_symbol_table_size].flags = flags;
 187   symbol_table[cur_symbol_table_size].names = names;
 188   cur_symbol_table_size++;
 189   if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
 190     fatal ("too many calls to add_symbols");
 191   symbol_table[cur_symbol_table_size].names = NULL; /* Termination.  */
 192 }
 193
 194 struct std_include_entry {
 195   const char *name;
 196   symbol_flags flags;
 197   namelist names;
 198 };
 199
 200 const char NONE[] = "";  /* The empty namelist.  */
 201
 202 /* Special name to indicate a continuation line in std_include_table.  */
 203 const char CONTINUED[] = "";
 204
 205 struct std_include_entry *include_entry;
 206
 207 struct std_include_entry std_include_table [] = {
 208   { "ctype.h", ANSI_SYMBOL,
 209       "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
 210 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
 211
 212   { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
 213
 214   { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
 215
 216   /* ANSI_SYMBOL is wrong, but ...  */
 217   { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
 218 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
 219 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
 220 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
 221 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
 222
 223   { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
 224
 225   /* Maybe also "getgrent fgetgrent setgrent endgrent" */
 226   { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
 227
 228 /*{ "limit.h", ... provided by gcc }, */
 229
 230   { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
 231
 232   { "math.h", ANSI_SYMBOL,
 233       "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
 234 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
 235 tan\0tanh\0" },
 236
 237   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
 238
 239   { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
 240
 241   /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.  */
 242   { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
 243
 244   /* Left out signal() - its prototype is too complex for us!
 245      Also left out "sigaction sigaddset sigdelset sigemptyset
 246      sigfillset sigismember sigpending sigprocmask sigsuspend"
 247      because these need sigset_t or struct sigaction.
 248      Most systems that provide them will also declare them.  */
 249   { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
 250
 251   { "stdio.h", ANSI_SYMBOL,
 252       "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
 253 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
 254 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
 255 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
 256 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
 257 tmpnam\0ungetc\0" },
 258   { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
 259   { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" },  /* I think ...  */
 260 /* Should perhaps also handle NULL, EOF, ... ? */
 261
 262   /* "div ldiv", - ignored because these depend on div_t, ldiv_t
 263      ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
 264      Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 265      Should perhaps also add NULL */
 266   { "stdlib.h", ANSI_SYMBOL,
 267       "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
 268 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
 269 srand\0strtod\0strtol\0strtoul\0system\0" },
 270   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
 271
 272   { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
 273 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
 274 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
 275 strtok\0strxfrm\0" },
 276 /* Should perhaps also add NULL and size_t */
 277
 278   { "strings.h", XOPEN_EXTENDED_SYMBOL,
 279       "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
 280
 281   { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 282
 283   /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
 284      ioctl in <strops.h>.  However, many systems have it is sys/ioctl.h,
 285      and many systems do have <sys/ioctl.h> but not <strops.h>.  */
 286   { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 287
 288   { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
 289
 290   { "sys/stat.h", POSIX1_SYMBOL,
 291       "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
 292   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 293       "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
 294 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
 295   { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
 296
 297 #if 0
 298 /* How do we handle fd_set? */
 299   { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
 300   { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
 301 #endif
 302
 303   { "sys/times.h", POSIX1_SYMBOL, "times\0" },
 304   /* "sys/types.h" add types (not in old g++-include) */
 305
 306   { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
 307
 308   { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
 309   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 310       "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
 311 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
 312
 313   { "tar.h", POSIX1_SYMBOL, NONE },
 314
 315   { "termios.h", POSIX1_SYMBOL,
 316       "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
 317
 318   { "time.h", ANSI_SYMBOL,
 319       "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
 320
 321   { "unistd.h", POSIX1_SYMBOL,
 322       "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
 323 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
 324 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
 325 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
 326 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
 327 ttyname\0unlink\0write\0" },
 328   { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
 329   { CONTINUED, XOPEN_EXTENDED_SYMBOL,
 330       "lockf\0gethostid\0gethostname\0readlink\0" },
 331
 332   { "utime.h", POSIX1_SYMBOL, "utime\0" },
 333
 334   { NULL, 0, NONE }
 335 };
 336
 337 enum special_file special_file_handling = no_special;
 338
 339 /* They are set if the corresponding macro has been seen.  */
 340 /* The following are only used when handling sys/stat.h */
 341 int seen_S_IFBLK = 0, seen_S_ISBLK  = 0;
 342 int seen_S_IFCHR = 0, seen_S_ISCHR  = 0;
 343 int seen_S_IFDIR = 0, seen_S_ISDIR  = 0;
 344 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
 345 int seen_S_IFLNK = 0, seen_S_ISLNK  = 0;
 346 int seen_S_IFREG = 0, seen_S_ISREG  = 0;
 347 /* The following are only used when handling errno.h */
 348 int seen_errno = 0;
 349 /* The following are only used when handling stdlib.h */
 350 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
 351 \f
 352 /* Wrapper around free, to avoid prototype clashes.  */
 353
 354 void
 355 xfree (ptr)
 356      char *ptr;
 357 {
 358   free (ptr);
 359 }
 360
 361 /* Avoid error if config defines abort as fancy_abort.
 362    It's not worth "really" implementing this because ordinary
 363    compiler users never run fix-header.  */
 364
 365 void
 366 fancy_abort ()
 367 {
 368   abort ();
 369 }
 370 \f
 371 #define obstack_chunk_alloc xmalloc
 372 #define obstack_chunk_free xfree
 373 struct obstack scan_file_obstack;
 374
 375 /* NOTE:  If you edit this, also edit gen-protos.c !! */
 376
 377 struct fn_decl *
 378 lookup_std_proto (name, name_length)
 379      const char *name;
 380      int name_length;
 381 {
 382   int i = hashf (name, name_length, HASH_SIZE);
 383   int i0 = i;
 384   for (;;)
 385     {
 386       struct fn_decl *fn;
 387       if (hash_tab[i] == 0)
 388         return NULL;
 389       fn = &std_protos[hash_tab[i]];
 390       if (strlen (fn->fname) == name_length
 391           && strncmp (fn->fname, name, name_length) == 0)
 392         return fn;
 393       i = (i+1) % HASH_SIZE;
 394       if (i == i0)
 395         abort ();
 396     }
 397 }
 398
 399 char *inc_filename;
 400 int inc_filename_length;
 401 char *progname = "fix-header";
 402 FILE *outf;
 403 sstring line;
 404
 405 int lbrac_line, rbrac_line;
 406
 407 int required_unseen_count = 0;
 408 int required_other = 0;
 409
 410 void
 411 write_lbrac ()
 412 {
 413
 414 #if ADD_MISSING_EXTERN_C
 415   if (missing_extern_C_count + required_unseen_count > 0)
 416     fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 417 #endif
 418
 419   if (partial_count)
 420     {
 421       fprintf (outf, "#ifndef _PARAMS\n");
 422       fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
 423       fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
 424       fprintf (outf, "#else\n");
 425       fprintf (outf, "#define _PARAMS(ARGS) ()\n");
 426       fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
 427     }
 428 }
 429
 430 struct partial_proto
 431 {
 432   struct partial_proto *next;
 433   char *fname;  /* name of function */
 434   char *rtype;  /* return type */
 435   struct fn_decl *fn;
 436   int line_seen;
 437 };
 438
 439 struct partial_proto *partial_proto_list = NULL;
 440
 441 struct partial_proto required_dummy_proto, seen_dummy_proto;
 442 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
 443 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
 444 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
 445 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
 446
 447 void
 448 recognized_macro (fname)
 449      char *fname;
 450 {
 451   /* The original include file defines fname as a macro.  */
 452   struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
 453
 454   /* Since fname is a macro, don't require a prototype for it.  */
 455   if (fn)
 456     {
 457       if (REQUIRED (fn))
 458         required_unseen_count--;
 459       SET_SEEN (fn);
 460     }
 461
 462   switch (special_file_handling)
 463     {
 464     case errno_h:
 465       if (strcmp (fname, "errno") == 0 && !seen_errno)
 466         seen_errno = 1, required_other--;
 467       break;
 468     case stdlib_h:
 469       if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
 470         seen_EXIT_FAILURE = 1, required_other--;
 471       if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
 472         seen_EXIT_SUCCESS = 1, required_other--;
 473       break;
 474     case sys_stat_h:
 475       if (fname[0] == 'S' && fname[1] == '_')
 476         {
 477           if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
 478           else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
 479           else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
 480           else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
 481           else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
 482           else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
 483           else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
 484           else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
 485           else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
 486           else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
 487           else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
 488           else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
 489         }
 490     }
 491 }
 492
 493 void
 494 recognized_extern (name, name_length, type, type_length)
 495      char *name;
 496      char *type;
 497      int name_length, type_length;
 498 {
 499   switch (special_file_handling)
 500     {
 501     case errno_h:
 502       if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
 503         seen_errno = 1, required_other--;
 504       break;
 505     }
 506 }
 507
 508 /* Called by scan_decls if it saw a function definition for a function
 509    named FNAME, with return type RTYPE, and argument list ARGS,
 510    in source file FILE_SEEN on line LINE_SEEN.
 511    KIND is 'I' for an inline function;
 512    'F' if a normal function declaration preceded by 'extern "C"'
 513    (or nested inside 'extern "C"' braces); or
 514    'f' for other function declarations.  */
 515
 516 void
 517 recognized_function (fname, fname_length,
 518                      kind, rtype, rtype_length,
 519                      have_arg_list, file_seen, line_seen)
 520      char *fname;
 521      int fname_length;
 522      int kind; /* One of 'f' 'F' or 'I' */
 523      char *rtype;
 524      int rtype_length;
 525      int have_arg_list;
 526      char *file_seen;
 527      int line_seen;
 528 {
 529   struct partial_proto *partial;
 530   int i;
 531   struct fn_decl *fn;
 532 #if ADD_MISSING_EXTERN_C
 533   if (kind == 'f')
 534     missing_extern_C_count++;
 535 #endif
 536
 537   fn = lookup_std_proto (fname, fname_length);
 538
 539   /* Remove the function from the list of required function.  */
 540   if (fn)
 541     {
 542       if (REQUIRED (fn))
 543         required_unseen_count--;
 544       SET_SEEN (fn);
 545     }
 546
 547   /* If we have a full prototype, we're done.  */
 548   if (have_arg_list)
 549     return;
 550
 551   if (kind == 'I')  /* don't edit inline function */
 552     return;
 553
 554   /* If the partial prototype was included from some other file,
 555      we don't need to patch it up (in this run).  */
 556   i = strlen (file_seen);
 557   if (i < inc_filename_length
 558       || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
 559     return;
 560
 561   if (fn == NULL)
 562     return;
 563   if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
 564     return;
 565
 566   /* We only have a partial function declaration,
 567      so remember that we have to add a complete prototype.  */
 568   partial_count++;
 569   partial = (struct partial_proto *)
 570     obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
 571   partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
 572   bcopy (fname, partial->fname, fname_length);
 573   partial->fname[fname_length] = 0;
 574   partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
 575   sprintf (partial->rtype, "%.*s", rtype_length, rtype);
 576   partial->line_seen = line_seen;
 577   partial->fn = fn;
 578   fn->partial = partial;
 579   partial->next = partial_proto_list;
 580   partial_proto_list = partial;
 581   if (verbose)
 582     {
 583       fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
 584                inc_filename, partial->fname);
 585     }
 586 }
 587
 588 /* For any name in NAMES that is defined as a macro,
 589    call recognized_macro on it.  */
 590
 591 void
 592 check_macro_names (pfile, names)
 593      cpp_reader *pfile;
 594      namelist names;
 595 {
 596   while (*names)
 597     {
 598       if (cpp_lookup (pfile, names, -1, -1))
 599         recognized_macro (names);
 600       names += strlen (names) + 1;
 601     }
 602 }
 603
 604 void
 605 read_scan_file (in_fname, argc, argv)
 606      char *in_fname;
 607      int argc;
 608      char **argv;
 609 {
 610   cpp_reader scan_in;
 611   cpp_options scan_options;
 612   struct fn_decl *fn;
 613   int i;
 614   register struct symbol_list *cur_symbols;
 615
 616   obstack_init (&scan_file_obstack);
 617
 618   cpp_reader_init (&scan_in);
 619   scan_in.data = &scan_options;
 620   cpp_options_init (&scan_options);
 621   i = cpp_handle_options (&scan_in, argc, argv);
 622   if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
 623     cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
 624   if (CPP_FATAL_ERRORS (&scan_in))
 625     exit (FATAL_EXIT_CODE);
 626
 627   if (! cpp_start_read (&scan_in, in_fname))
 628     exit (FATAL_EXIT_CODE);
 629   CPP_OPTIONS (&scan_in)->no_line_commands = 1;
 630
 631   scan_decls (&scan_in, argc, argv);
 632   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 633     check_macro_names (&scan_in, cur_symbols->names);
 634
 635   if (verbose && (scan_in.errors + warnings) > 0)
 636     fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
 637              inc_filename, scan_in.errors, warnings);
 638   if (scan_in.errors)
 639     exit (SUCCESS_EXIT_CODE);
 640
 641   /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
 642      If so, those functions are also required.  */
 643   if (special_file_handling == stdio_h
 644       && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
 645     {
 646       static char getchar_call[] = "getchar();";
 647       cpp_buffer *buf
 648         = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
 649       int old_written = CPP_WRITTEN (&scan_in);
 650       int seen_filbuf = 0;
 651
 652       /* Scan the macro expansion of "getchar();".  */
 653       for (;;)
 654         {
 655           enum cpp_token token = cpp_get_token (&scan_in);
 656           int length = CPP_WRITTEN (&scan_in) - old_written;
 657           CPP_SET_WRITTEN (&scan_in, old_written);
 658           if (token == CPP_EOF) /* Should not happen ...  */
 659             break;
 660           if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
 661             {
 662               cpp_pop_buffer (&scan_in);
 663               break;
 664             }
 665           if (token == CPP_NAME && length == 7
 666               && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
 667             seen_filbuf++;
 668         }
 669       if (seen_filbuf)
 670         {
 671           int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
 672           struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
 673           int need_flsbuf
 674             = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
 675
 676           /* Append "_filbuf" and/or "_flsbuf" to the required functions.  */
 677           if (need_filbuf + need_flsbuf)
 678             {
 679               char *new_list;
 680               if (need_filbuf)
 681                 SET_REQUIRED (fn);
 682               if (need_flsbuf)
 683                 SET_REQUIRED (flsbuf_fn);
 684               if (need_flsbuf + need_filbuf == 2)
 685                 new_list = "_filbuf\0_flsbuf\0";
 686               else if (need_flsbuf)
 687                 new_list = "_flsbuf\0";
 688               else /* if (need_flsbuf) */
 689                 new_list = "_filbuf\0";
 690               add_symbols (ANSI_SYMBOL, new_list);
 691               required_unseen_count += need_filbuf + need_flsbuf;
 692             }
 693         }
 694     }
 695
 696   if (required_unseen_count + partial_count + required_other
 697 #if ADD_MISSING_EXTERN_C
 698       + missing_extern_C_count
 699 #endif
 700       == 0)
 701     {
 702       if (verbose)
 703         fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
 704       exit (SUCCESS_EXIT_CODE);
 705     }
 706   if (!verbose)
 707     fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
 708   else
 709     {
 710       if (required_unseen_count)
 711         fprintf (stderr, "%s: %d missing function declarations.\n",
 712                  inc_filename, required_unseen_count);
 713       if (partial_count)
 714         fprintf (stderr, "%s: %d non-prototype function declarations.\n",
 715                  inc_filename, partial_count);
 716 #if ADD_MISSING_EXTERN_C
 717       if (missing_extern_C_count)
 718         fprintf (stderr,
 719                  "%s: %d declarations not protected by extern \"C\".\n",
 720                  inc_filename, missing_extern_C_count);
 721 #endif
 722     }
 723 }
 724
 725 void
 726 write_rbrac ()
 727 {
 728   struct fn_decl *fn;
 729   const char *cptr;
 730   register struct symbol_list *cur_symbols;
 731
 732   if (required_unseen_count)
 733     {
 734 #ifdef NO_IMPLICIT_EXTERN_C
 735       fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 736 #endif
 737     }
 738
 739   /* Now we print out prototypes for those functions that we haven't seen.  */
 740   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 741     {
 742       int if_was_emitted = 0;
 743       int name_len;
 744       cptr = cur_symbols->names;
 745       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
 746         {
 747           int macro_protect = 0;
 748
 749           if (cur_symbols->flags & MACRO_SYMBOL)
 750             continue;
 751
 752           fn = lookup_std_proto (cptr, name_len);
 753           if (fn == NULL || !REQUIRED (fn))
 754             continue;
 755
 756           if (!if_was_emitted)
 757             {
 758 /*            what about curses. ??? or _flsbuf/_filbuf ??? */
 759               if (cur_symbols->flags & ANSI_SYMBOL)
 760                 fprintf (outf,
 761          "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
 762               else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
 763                 fprintf (outf,
 764        "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
 765     ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
 766     : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
 767               else if (cur_symbols->flags & XOPEN_SYMBOL)
 768                 {
 769                 fprintf (outf,
 770        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 771    || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
 772                 }
 773               else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
 774                 {
 775                 fprintf (outf,
 776        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 777    || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
 778                 }
 779               else
 780                 {
 781                   fatal ("internal error for function %s", fn->fname);
 782                 }
 783               if_was_emitted = 1;
 784             }
 785
 786           /* In the case of memmove, protect in case the application
 787              defines it as a macro before including the header.  */
 788           if (!strcmp (fn->fname, "memmove")
 789               || !strcmp (fn->fname, "vprintf")
 790               || !strcmp (fn->fname, "vfprintf")
 791               || !strcmp (fn->fname, "vsprintf")
 792               || !strcmp (fn->fname, "rewinddir"))
 793             macro_protect = 1;
 794
 795           if (macro_protect)
 796             fprintf (outf, "#ifndef %s\n", fn->fname);
 797           fprintf (outf, "extern %s %s (%s);\n",
 798                    fn->rtype, fn->fname, fn->params);
 799           if (macro_protect)
 800             fprintf (outf, "#endif\n");
 801         }
 802       if (if_was_emitted)
 803         fprintf (outf,
 804                  "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
 805     }
 806   if (required_unseen_count)
 807     {
 808 #ifdef NO_IMPLICIT_EXTERN_C
 809       fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 810 #endif
 811     }
 812
 813   switch (special_file_handling)
 814     {
 815     case errno_h:
 816       if (!seen_errno)
 817         fprintf (outf, "extern int errno;\n");
 818       break;
 819     case stdlib_h:
 820       if (!seen_EXIT_FAILURE)
 821         fprintf (outf, "#define EXIT_FAILURE 1\n");
 822       if (!seen_EXIT_SUCCESS)
 823         fprintf (outf, "#define EXIT_SUCCESS 0\n");
 824       break;
 825     case sys_stat_h:
 826       if (!seen_S_ISBLK && seen_S_IFBLK)
 827         fprintf (outf,
 828                  "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
 829       if (!seen_S_ISCHR && seen_S_IFCHR)
 830         fprintf (outf,
 831                  "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
 832       if (!seen_S_ISDIR && seen_S_IFDIR)
 833         fprintf (outf,
 834                  "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
 835       if (!seen_S_ISFIFO && seen_S_IFIFO)
 836         fprintf (outf,
 837                  "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
 838       if (!seen_S_ISLNK && seen_S_IFLNK)
 839         fprintf (outf,
 840                  "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
 841       if (!seen_S_ISREG && seen_S_IFREG)
 842         fprintf (outf,
 843                  "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
 844       break;
 845     }
 846
 847
 848 #if ADD_MISSING_EXTERN_C
 849   if (missing_extern_C_count + required_unseen_count > 0)
 850     fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 851 #endif
 852 }
 853
 854 char *
 855 xstrdup (str)
 856      char *str;
 857 {
 858   char *copy = (char *) xmalloc (strlen (str) + 1);
 859   strcpy (copy, str);
 860   return copy;
 861 }
 862
 863 /* Returns 1 iff the file is properly protected from multiple inclusion:
 864    #ifndef PROTECT_NAME
 865    #define PROTECT_NAME
 866    #endif
 867
 868  */
 869
 870 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
 871 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
 872
 873 int
 874 inf_skip_spaces (c)
 875      int c;
 876 {
 877   for (;;)
 878     {
 879       if (c == ' ' || c == '\t')
 880         c = INF_GET ();
 881       else if (c == '/')
 882         {
 883           c = INF_GET ();
 884           if (c != '*')
 885             {
 886               INF_UNGET (c);
 887               return '/';
 888             }
 889           c = INF_GET ();
 890           for (;;)
 891             {
 892               if (c == EOF)
 893                 return EOF;
 894               else if (c != '*')
 895                 {
 896                   if (c == '\n')
 897                     source_lineno++, lineno++;
 898                   c = INF_GET ();
 899                 }
 900               else if ((c = INF_GET ()) == '/')
 901                 return INF_GET ();
 902             }
 903         }
 904       else
 905         break;
 906     }
 907   return c;
 908 }
 909
 910 /* Read into STR from inf_buffer upto DELIM.  */
 911
 912 int
 913 inf_read_upto (str, delim)
 914      sstring *str;
 915      int delim;
 916 {
 917   int ch;
 918   for (;;)
 919     {
 920       ch = INF_GET ();
 921       if (ch == EOF || ch == delim)
 922         break;
 923       SSTRING_PUT (str, ch);
 924     }
 925   MAKE_SSTRING_SPACE (str, 1);
 926   *str->ptr = 0;
 927   return ch;
 928 }
 929
 930 int
 931 inf_scan_ident (s, c)
 932      register sstring *s;
 933      int c;
 934 {
 935   s->ptr = s->base;
 936   if (isalpha (c) || c == '_')
 937     {
 938       for (;;)
 939         {
 940           SSTRING_PUT (s, c);
 941           c = INF_GET ();
 942           if (c == EOF || !(isalnum (c) || c == '_'))
 943             break;
 944         }
 945     }
 946   MAKE_SSTRING_SPACE (s, 1);
 947   *s->ptr = 0;
 948   return c;
 949 }
 950
 951 /* Returns 1 if the file is correctly protected against multiple
 952    inclusion, setting *ifndef_line to the line number of the initial #ifndef
 953    and setting *endif_line to the final #endif.
 954    Otherwise return 0.  */
 955
 956 int
 957 check_protection (ifndef_line, endif_line)
 958      int *ifndef_line, *endif_line;
 959 {
 960   int c;
 961   int if_nesting = 1; /* Level of nesting of #if's */
 962   char *protect_name = NULL; /* Identifier following initial #ifndef */
 963   int define_seen = 0;
 964
 965   /* Skip initial white space (including comments).  */
 966   for (;; lineno++)
 967     {
 968       c = inf_skip_spaces (' ');
 969       if (c == EOF)
 970         return 0;
 971       if (c != '\n')
 972         break;
 973     }
 974   if (c != '#')
 975     return 0;
 976   c = inf_scan_ident (&buf, inf_skip_spaces (' '));
 977   if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
 978     return 0;
 979
 980   /* So far so good: We've seen an initial #ifndef.  */
 981   *ifndef_line = lineno;
 982   c = inf_scan_ident (&buf, inf_skip_spaces (c));
 983   if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
 984     return 0;
 985   protect_name = xstrdup (buf.base);
 986
 987   INF_UNGET (c);
 988   c = inf_read_upto (&buf, '\n');
 989   if (c == EOF)
 990     return 0;
 991   lineno++;
 992
 993   for (;;)
 994     {
 995       c = inf_skip_spaces (' ');
 996       if (c == EOF)
 997         return 0;
 998       if (c == '\n')
 999         {
1000           lineno++;
1001           continue;
1002         }
1003       if (c != '#')
1004         goto skip_to_eol;
1005       c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1006       if (SSTRING_LENGTH (&buf) == 0)
1007         ;
1008       else if (!strcmp (buf.base, "ifndef")
1009           || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1010         {
1011           if_nesting++;
1012         }
1013       else if (!strcmp (buf.base, "endif"))
1014         {
1015           if_nesting--;
1016           if (if_nesting == 0)
1017             break;
1018         }
1019       else if (!strcmp (buf.base, "else"))
1020         {
1021           if (if_nesting == 1)
1022             return 0;
1023         }
1024       else if (!strcmp (buf.base, "define"))
1025         {
1026           if (if_nesting != 1)
1027             goto skip_to_eol;
1028           c = inf_skip_spaces (c);
1029           c = inf_scan_ident (&buf, c);
1030           if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1031             define_seen = 1;
1032         }
1033     skip_to_eol:
1034       for (;;)
1035         {
1036           if (c == '\n' || c == EOF)
1037             break;
1038           c = INF_GET ();
1039         }
1040       if (c == EOF)
1041         return 0;
1042       lineno++;
1043     }
1044
1045   if (!define_seen)
1046      return 0;
1047   *endif_line = lineno;
1048   /* Skip final white space (including comments).  */
1049   for (;;)
1050     {
1051       c = inf_skip_spaces (' ');
1052       if (c == EOF)
1053         break;
1054       if (c != '\n')
1055         return 0;
1056     }
1057
1058   return 1;
1059 }
1060
1061 int
1062 main (argc, argv)
1063      int argc;
1064      char **argv;
1065 {
1066   int inf_fd;
1067   struct stat sbuf;
1068   int c;
1069   int i, done;
1070   const char *cptr, **pptr;
1071   int ifndef_line;
1072   int endif_line;
1073   long to_read;
1074   long int inf_size;
1075   register struct symbol_list *cur_symbols;
1076
1077   if (argv[0] && argv[0][0])
1078     {
1079       register char *p;
1080
1081       progname = 0;
1082       for (p = argv[0]; *p; p++)
1083         if (*p == '/')
1084           progname = p;
1085       progname = progname ? progname+1 : argv[0];
1086     }
1087
1088   if (argc < 4)
1089     {
1090       fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1091                progname);
1092       exit (FATAL_EXIT_CODE);
1093     }
1094
1095   inc_filename = argv[1];
1096   inc_filename_length = strlen (inc_filename);
1097
1098 #ifdef FIXPROTO_IGNORE_LIST
1099   for (i = 0; files_to_ignore[i] != NULL; i++)
1100     {
1101       char *ignore_name = files_to_ignore[i];
1102       int ignore_len = strlen (ignore_name);
1103       if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1104         {
1105           if (ignore_name[ignore_len-1] == '/'
1106               || inc_filename[ignore_len] == '\0')
1107             {
1108               if (verbose)
1109                 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1110               exit (SUCCESS_EXIT_CODE);
1111             }
1112         }
1113
1114     }
1115 #endif
1116
1117   if (strcmp (inc_filename, "sys/stat.h") == 0)
1118     special_file_handling = sys_stat_h;
1119   else if (strcmp (inc_filename, "errno.h") == 0)
1120     special_file_handling = errno_h, required_other++;
1121   else if (strcmp (inc_filename, "stdlib.h") == 0)
1122     special_file_handling = stdlib_h, required_other+=2;
1123   else if (strcmp (inc_filename, "stdio.h") == 0)
1124     special_file_handling = stdio_h;
1125   include_entry = std_include_table;
1126   while (include_entry->name != NULL
1127          && (include_entry->name == CONTINUED
1128              || strcmp (inc_filename, include_entry->name) != 0))
1129     include_entry++;
1130
1131   if (include_entry->name != NULL)
1132     {
1133       struct std_include_entry *entry;
1134       cur_symbol_table_size = 0;
1135       for (entry = include_entry; ;)
1136         {
1137           if (entry->flags)
1138             add_symbols (entry->flags, entry->names);
1139           entry++;
1140           if (entry->name != CONTINUED)
1141             break;
1142         }
1143     }
1144   else
1145     symbol_table[0].names = NULL;
1146
1147   /* Count and mark the prototypes required for this include file.  */
1148   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1149     {
1150       int name_len;
1151       if (cur_symbols->flags & MACRO_SYMBOL)
1152         continue;
1153       cptr = cur_symbols->names;
1154       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1155         {
1156           struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1157           required_unseen_count++;
1158           if (fn == NULL)
1159             fprintf (stderr, "Internal error:  No prototype for %s\n", cptr);
1160           else
1161             SET_REQUIRED (fn);
1162         }
1163     }
1164
1165   read_scan_file (argv[2], argc - 4, argv + 4);
1166
1167   inf_fd = open (argv[2], O_RDONLY, 0666);
1168   if (inf_fd < 0)
1169     {
1170       fprintf (stderr, "%s: Cannot open '%s' for reading -",
1171                progname, argv[2]);
1172       perror (NULL);
1173       exit (FATAL_EXIT_CODE);
1174     }
1175   if (fstat (inf_fd, &sbuf) < 0)
1176     {
1177       fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1178       perror (NULL);
1179       exit (FATAL_EXIT_CODE);
1180     }
1181   inf_size = sbuf.st_size;
1182   inf_buffer = (char *) xmalloc (inf_size + 2);
1183   inf_buffer[inf_size] = '\n';
1184   inf_buffer[inf_size + 1] = '\0';
1185   inf_limit = inf_buffer + inf_size;
1186   inf_ptr = inf_buffer;
1187
1188   to_read = inf_size;
1189   while (to_read > 0)
1190     {
1191       long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1192       if (i < 0)
1193         {
1194           fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1195           perror (NULL);
1196           exit (FATAL_EXIT_CODE);
1197         }
1198       if (i == 0)
1199         {
1200           inf_size -= to_read;
1201           break;
1202         }
1203       to_read -= i;
1204     }
1205
1206   close (inf_fd);
1207
1208   /* If file doesn't end with '\n', add one.  */
1209   if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1210     inf_limit++;
1211
1212   unlink (argv[3]);
1213   outf = fopen (argv[3], "w");
1214   if (outf == NULL)
1215     {
1216       fprintf (stderr, "%s: Cannot open '%s' for writing -",
1217                progname, argv[3]);
1218       perror (NULL);
1219       exit (FATAL_EXIT_CODE);
1220     }
1221
1222   lineno = 1;
1223
1224   if (check_protection (&ifndef_line, &endif_line))
1225     {
1226       lbrac_line = ifndef_line+1;
1227       rbrac_line = endif_line;
1228     }
1229   else
1230     {
1231       lbrac_line = 1;
1232       rbrac_line = -1;
1233     }
1234
1235   /* Reset input file.  */
1236   inf_ptr = inf_buffer;
1237   lineno = 1;
1238
1239   for (;;)
1240     {
1241       if (lineno == lbrac_line)
1242         write_lbrac ();
1243       if (lineno == rbrac_line)
1244         write_rbrac ();
1245       for (;;)
1246         {
1247           struct fn_decl *fn;
1248           c = INF_GET ();
1249           if (c == EOF)
1250             break;
1251           if (isalpha (c) || c == '_')
1252             {
1253               c = inf_scan_ident (&buf, c);
1254               INF_UNGET (c);
1255               fputs (buf.base, outf);
1256               fn = lookup_std_proto (buf.base, strlen (buf.base));
1257               /* We only want to edit the declaration matching the one
1258                  seen by scan-decls, as there can be multiple
1259                  declarations, selected by #ifdef __STDC__ or whatever.  */
1260               if (fn && fn->partial && fn->partial->line_seen == lineno)
1261                 {
1262                   c = inf_skip_spaces (' ');
1263                   if (c == EOF)
1264                     break;
1265                   if (c == '(')
1266                     {
1267                       c = inf_skip_spaces (' ');
1268                       if (c == ')')
1269                         {
1270                           fprintf (outf, " _PARAMS((%s))", fn->params);
1271                         }
1272                       else
1273                         {
1274                           putc ('(', outf);
1275                           INF_UNGET (c);
1276                         }
1277                     }
1278                   else
1279                     fprintf (outf, " %c", c);
1280                 }
1281             }
1282           else
1283             {
1284               putc (c, outf);
1285               if (c == '\n')
1286                 break;
1287             }
1288         }
1289       if (c == EOF)
1290         break;
1291       lineno++;
1292     }
1293   if (rbrac_line < 0)
1294     write_rbrac ();
1295
1296   fclose (outf);
1297
1298   return 0;
1299 }
1300 \f
1301 /* Stub error functions.  These replace cpperror.c,
1302    because we want to suppress error messages.  */
1303
1304 void
1305 cpp_file_line_for_message (pfile, filename, line, column)
1306      cpp_reader *pfile;
1307      char *filename;
1308      int line, column;
1309 {
1310   if (!verbose)
1311     return;
1312   if (column > 0)
1313     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1314   else
1315     fprintf (stderr, "%s:%d: ", filename, line);
1316 }
1317
1318 void
1319 cpp_print_containing_files (pfile)
1320      cpp_reader *pfile;
1321 {
1322 }
1323
1324 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1325
1326 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1327      int is_error;
1328      cpp_reader *pfile;
1329      char *msg;
1330      char *arg1, *arg2, *arg3;
1331 {
1332   if (is_error == 1)
1333     pfile->errors++;
1334   else if (is_error > 1)
1335     pfile->errors = CPP_FATAL_LIMIT;
1336   if (!verbose)
1337     return;
1338   if (!is_error)
1339     fprintf (stderr, "warning: ");
1340   fprintf (stderr, msg, arg1, arg2, arg3);
1341   fprintf (stderr, "\n");
1342 }
1343
1344 void
1345 fatal (str, arg)
1346      char *str, *arg;
1347 {
1348   fprintf (stderr, "%s: %s: ", progname, inc_filename);
1349   fprintf (stderr, str, arg);
1350   fprintf (stderr, "\n");
1351   exit (FATAL_EXIT_CODE);
1352 }
1353
1354 void
1355 cpp_fatal (pfile, str, arg)
1356      cpp_reader *pfile;
1357      char *str, *arg;
1358 {
1359   fatal (str, arg);
1360 }
1361
1362 void
1363 cpp_pfatal_with_name (pfile, name)
1364      cpp_reader *pfile;
1365      char *name;
1366 {
1367   cpp_perror_with_name (pfile, name);
1368   exit (FATAL_EXIT_CODE);
1369 }