gcc/fix-header.c

   1 /* fix-header.c - Make C header file suitable for C++.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1997 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 more conforming with ANSI/POSIX, and more suitable for 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 <stdio.h>
  74 #include <ctype.h>
  75 #include "hconfig.h"
  76 #include "obstack.h"
  77 #include "scan.h"
  78 #include "cpplib.h"
  79 #include "gansidecl.h"
  80
  81 #ifndef O_RDONLY
  82 #define O_RDONLY 0
  83 #endif
  84
  85 extern void cpp_fatal ();
  86
  87 #if !__STDC__ && !defined(const)
  88 #define const /* nothing */
  89 #endif
  90
  91 sstring buf;
  92
  93 int verbose = 0;
  94 int partial_count = 0;
  95 int warnings = 0;
  96
  97 /* We no longer need to add extern "C", because cpp implicitly
  98    forces the standard include files to be treated as C.  */
  99 /*#define ADD_MISSING_EXTERN_C 1 */
 100
 101 #if ADD_MISSING_EXTERN_C
 102 int missing_extern_C_count = 0;
 103 #endif
 104
 105 #include "xsys-protos.h"
 106
 107 #ifdef FIXPROTO_IGNORE_LIST
 108 /* This is a currently unused feature.  */
 109
 110 /* List of files and directories to ignore.
 111    A directory name (ending in '/') means ignore anything in that
 112    directory.  (It might be more efficient to do directory pruning
 113    earlier in fixproto, but this is simpler and easier to customize.) */
 114
 115 static char *files_to_ignore[] = {
 116   "X11/",
 117   FIXPROTO_IGNORE_LIST
 118   0
 119 };
 120 #endif
 121
 122 char *inf_buffer;
 123 char *inf_limit;
 124 char *inf_ptr;
 125
 126 /* Certain standard files get extra treatment */
 127
 128 enum special_file
 129 {
 130   no_special,
 131   errno_h,
 132   stdio_h,
 133   stdlib_h,
 134   sys_stat_h
 135 };
 136
 137 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
 138    by an empty name (i.e. by "\0\0").  */
 139
 140 typedef const char *namelist;
 141
 142 /* The following macros provide the bits for symbol_flags.  */
 143 typedef int symbol_flags;
 144
 145 /* Used to mark names defined in the ANSI/ISO C standard.  */
 146 #define ANSI_SYMBOL 1
 147
 148 /* Used to mark names defined in the Posix.1 or Posix.2 standard.  */
 149 #define POSIX1_SYMBOL 2
 150 #define POSIX2_SYMBOL 4
 151
 152 /* Used to mark names defined in X/Open Portability Guide.  */
 153 #define XOPEN_SYMBOL 8
 154 /* Used to mark names defined in X/Open UNIX Extensions.  */
 155 #define XOPEN_EXTENDED_SYMBOL 16
 156
 157 /* Used to indicate names that are not functions */
 158 #define MACRO_SYMBOL 512
 159
 160 struct symbol_list {
 161   symbol_flags flags;
 162   namelist names;
 163 };
 164
 165 #define SYMBOL_TABLE_SIZE 10
 166 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
 167 int cur_symbol_table_size;
 168
 169 void
 170 add_symbols (flags, names)
 171      symbol_flags flags;
 172      namelist names;
 173 {
 174   symbol_table[cur_symbol_table_size].flags = flags;
 175   symbol_table[cur_symbol_table_size].names = names;
 176   cur_symbol_table_size++;
 177   if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
 178     fatal ("too many calls to add_symbols");
 179   symbol_table[cur_symbol_table_size].names = NULL; /* Termination.  */
 180 }
 181
 182 struct std_include_entry {
 183   const char *name;
 184   symbol_flags flags;
 185   namelist names;
 186 };
 187
 188 const char NONE[] = "";  /* The empty namelist.  */
 189
 190 /* Special name to indicate a continuation line in std_include_table.  */
 191 const char CONTINUED[] = "";
 192
 193 struct std_include_entry *include_entry;
 194
 195 struct std_include_entry std_include_table [] = {
 196   { "ctype.h", ANSI_SYMBOL,
 197       "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
 198 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
 199
 200   { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
 201
 202   { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
 203
 204   /* ANSI_SYMBOL is wrong, but ...  */
 205   { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
 206 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
 207 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
 208 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
 209 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
 210
 211   { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
 212
 213   /* Maybe also "getgrent fgetgrent setgrent endgrent" */
 214   { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
 215
 216 /*{ "limit.h", ... provided by gcc }, */
 217
 218   { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
 219
 220   { "math.h", ANSI_SYMBOL,
 221       "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
 222 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
 223 tan\0tanh\0" },
 224
 225   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
 226
 227   { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
 228
 229   /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.  */
 230   { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
 231
 232   /* Left out signal() - its prototype is too complex for us!
 233      Also left out "sigaction sigaddset sigdelset sigemptyset
 234      sigfillset sigismember sigpending sigprocmask sigsuspend"
 235      because these need sigset_t or struct sigaction.
 236      Most systems that provide them will also declare them.  */
 237   { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
 238
 239   { "stdio.h", ANSI_SYMBOL,
 240       "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
 241 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
 242 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\00perror\0popen\0\
 243 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
 244 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
 245 tmpnam\0ungetc\0" },
 246   { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
 247   { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" },  /* I think ...  */
 248 /* Should perhaps also handle NULL, EOF, ... ? */
 249
 250   /* "div ldiv", - ignored because these depend on div_t, ldiv_t
 251      ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
 252      Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 253      Should perhaps also add NULL */
 254   { "stdlib.h", ANSI_SYMBOL,
 255       "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
 256 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
 257 srand\0strtod\0strtol\0strtoul\0system\0" },
 258   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
 259
 260   { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
 261 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
 262 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
 263 strtok\0strxfrm\0" },
 264 /* Should perhaps also add NULL and size_t */
 265
 266   { "strings.h", XOPEN_EXTENDED_SYMBOL,
 267       "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
 268
 269   { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 270
 271   /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
 272      ioctl in <strops.h>.  However, many systems have it is sys/ioctl.h,
 273      and many systems do have <sys/ioctl.h> but not <strops.h>.  */
 274   { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 275
 276   { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
 277
 278   { "sys/stat.h", POSIX1_SYMBOL,
 279       "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
 280   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 281       "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
 282 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
 283   { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
 284
 285 #if 0
 286 /* How do we handle fd_set? */
 287   { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
 288   { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
 289 #endif
 290
 291   { "sys/times.h", POSIX1_SYMBOL, "times\0" },
 292   /* "sys/types.h" add types (not in old g++-include) */
 293
 294   { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
 295
 296   { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
 297   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 298       "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
 299 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
 300
 301   { "tar.h", POSIX1_SYMBOL, NONE },
 302
 303   { "termios.h", POSIX1_SYMBOL,
 304       "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
 305
 306   { "time.h", ANSI_SYMBOL,
 307       "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
 308
 309   { "unistd.h", POSIX1_SYMBOL,
 310       "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
 311 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
 312 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
 313 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
 314 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
 315 ttyname\0unlink\0write\0" },
 316   { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
 317   { CONTINUED, XOPEN_EXTENDED_SYMBOL,
 318       "lockf\0gethostid\0gethostname\0readlink\0" },
 319
 320   { "utime.h", POSIX1_SYMBOL, "utime\0" },
 321
 322   { NULL, 0, NONE }
 323 };
 324
 325 enum special_file special_file_handling = no_special;
 326
 327 /* They are set if the corresponding macro has been seen.  */
 328 /* The following are only used when handling sys/stat.h */
 329 int seen_S_IFBLK = 0, seen_S_ISBLK  = 0;
 330 int seen_S_IFCHR = 0, seen_S_ISCHR  = 0;
 331 int seen_S_IFDIR = 0, seen_S_ISDIR  = 0;
 332 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
 333 int seen_S_IFLNK = 0, seen_S_ISLNK  = 0;
 334 int seen_S_IFREG = 0, seen_S_ISREG  = 0;
 335 /* The following are only used when handling errno.h */
 336 int seen_errno = 0;
 337 /* The following are only used when handling stdlib.h */
 338 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
 339 \f
 340 /* Wrapper around free, to avoid prototype clashes.  */
 341
 342 void
 343 xfree (ptr)
 344      char *ptr;
 345 {
 346   free (ptr);
 347 }
 348
 349 /* Avoid error if config defines abort as fancy_abort.
 350    It's not worth "really" implementing this because ordinary
 351    compiler users never run fix-header.  */
 352
 353 void
 354 fancy_abort ()
 355 {
 356   abort ();
 357 }
 358 \f
 359 #define obstack_chunk_alloc xmalloc
 360 #define obstack_chunk_free xfree
 361 struct obstack scan_file_obstack;
 362
 363 /* NOTE:  If you edit this, also edit gen-protos.c !! */
 364
 365 struct fn_decl *
 366 lookup_std_proto (name, name_length)
 367      const char *name;
 368      int name_length;
 369 {
 370   int i = hashf (name, name_length, HASH_SIZE);
 371   int i0 = i;
 372   for (;;)
 373     {
 374       struct fn_decl *fn;
 375       if (hash_tab[i] == 0)
 376         return NULL;
 377       fn = &std_protos[hash_tab[i]];
 378       if (strlen (fn->fname) == name_length
 379           && strncmp (fn->fname, name, name_length) == 0)
 380         return fn;
 381       i = (i+1) % HASH_SIZE;
 382       if (i == i0)
 383         abort ();
 384     }
 385 }
 386
 387 char *inc_filename;
 388 int inc_filename_length;
 389 char *progname = "fix-header";
 390 FILE *outf;
 391 sstring line;
 392
 393 int lbrac_line, rbrac_line;
 394
 395 int required_unseen_count = 0;
 396 int required_other = 0;
 397
 398 void
 399 write_lbrac ()
 400 {
 401
 402 #if ADD_MISSING_EXTERN_C
 403   if (missing_extern_C_count + required_unseen_count > 0)
 404     fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 405 #endif
 406
 407   if (partial_count)
 408     {
 409       fprintf (outf, "#ifndef _PARAMS\n");
 410       fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
 411       fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
 412       fprintf (outf, "#else\n");
 413       fprintf (outf, "#define _PARAMS(ARGS) ()\n");
 414       fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
 415     }
 416 }
 417
 418 struct partial_proto
 419 {
 420   struct partial_proto *next;
 421   char *fname;  /* name of function */
 422   char *rtype;  /* return type */
 423   struct fn_decl *fn;
 424   int line_seen;
 425 };
 426
 427 struct partial_proto *partial_proto_list = NULL;
 428
 429 struct partial_proto required_dummy_proto, seen_dummy_proto;
 430 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
 431 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
 432 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
 433 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
 434
 435 void
 436 recognized_macro (fname)
 437      char *fname;
 438 {
 439   /* The original include file defines fname as a macro.  */
 440   struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
 441
 442   /* Since fname is a macro, don't require a prototype for it.  */
 443   if (fn)
 444     {
 445       if (REQUIRED (fn))
 446         required_unseen_count--;
 447       SET_SEEN (fn);
 448     }
 449
 450   switch (special_file_handling)
 451     {
 452     case errno_h:
 453       if (strcmp (fname, "errno") == 0 && !seen_errno)
 454         seen_errno = 1, required_other--;
 455       break;
 456     case stdlib_h:
 457       if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
 458         seen_EXIT_FAILURE = 1, required_other--;
 459       if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
 460         seen_EXIT_SUCCESS = 1, required_other--;
 461       break;
 462     case sys_stat_h:
 463       if (fname[0] == 'S' && fname[1] == '_')
 464         {
 465           if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
 466           else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
 467           else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
 468           else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
 469           else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
 470           else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
 471           else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
 472           else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
 473           else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
 474           else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
 475           else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
 476           else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
 477         }
 478     }
 479 }
 480
 481 void
 482 recognized_extern (name, name_length, type, type_length)
 483      char *name;
 484      char *type;
 485      int name_length, type_length;
 486 {
 487   switch (special_file_handling)
 488     {
 489     case errno_h:
 490       if (strcmp (name, "errno") == 0 && !seen_errno)
 491         seen_errno = 1, required_other--;
 492       break;
 493     }
 494 }
 495
 496 /* Called by scan_decls if it saw a function definition for a function
 497    named FNAME, with return type RTYPE, and argument list ARGS,
 498    in source file FILE_SEEN on line LINE_SEEN.
 499    KIND is 'I' for an inline function;
 500    'F' if a normal function declaration preceded by 'extern "C"'
 501    (or nested inside 'extern "C"' braces); or
 502    'f' for other function declarations.  */
 503
 504 void
 505 recognized_function (fname, fname_length,
 506                      kind, rtype, rtype_length,
 507                      have_arg_list, file_seen, line_seen)
 508      char *fname;
 509      int fname_length;
 510      int kind; /* One of 'f' 'F' or 'I' */
 511      char *rtype;
 512      int rtype_length;
 513      int have_arg_list;
 514      char *file_seen;
 515      int line_seen;
 516 {
 517   struct partial_proto *partial;
 518   int i;
 519   struct fn_decl *fn;
 520 #if ADD_MISSING_EXTERN_C
 521   if (kind == 'f')
 522     missing_extern_C_count++;
 523 #endif
 524
 525   fn = lookup_std_proto (fname, fname_length);
 526
 527   /* Remove the function from the list of required function.  */
 528   if (fn)
 529     {
 530       if (REQUIRED (fn))
 531         required_unseen_count--;
 532       SET_SEEN (fn);
 533     }
 534
 535   /* If we have a full prototype, we're done.  */
 536   if (have_arg_list)
 537     return;
 538
 539   if (kind == 'I')  /* don't edit inline function */
 540     return;
 541
 542   /* If the partial prototype was included from some other file,
 543      we don't need to patch it up (in this run).  */
 544   i = strlen (file_seen);
 545   if (i < inc_filename_length
 546       || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
 547     return;
 548
 549   if (fn == NULL)
 550     return;
 551   if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
 552     return;
 553
 554   /* We only have a partial function declaration,
 555      so remember that we have to add a complete prototype.  */
 556   partial_count++;
 557   partial = (struct partial_proto *)
 558     obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
 559   partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
 560   bcopy (fname, partial->fname, fname_length);
 561   partial->fname[fname_length] = 0;
 562   partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
 563   sprintf (partial->rtype, "%.*s", rtype_length, rtype);
 564   partial->line_seen = line_seen;
 565   partial->fn = fn;
 566   fn->partial = partial;
 567   partial->next = partial_proto_list;
 568   partial_proto_list = partial;
 569   if (verbose)
 570     {
 571       fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
 572                inc_filename, partial->fname);
 573     }
 574 }
 575
 576 /* For any name in NAMES that is defined as a macro,
 577    call recognized_macro on it.  */
 578
 579 void
 580 check_macro_names (pfile, names)
 581      cpp_reader *pfile;
 582      namelist names;
 583 {
 584   while (*names)
 585     {
 586       if (cpp_lookup (pfile, names, -1, -1))
 587         recognized_macro (names);
 588       names += strlen (names) + 1;
 589     }
 590 }
 591
 592 void
 593 read_scan_file (in_fname, argc, argv)
 594      char *in_fname;
 595      int argc;
 596      char **argv;
 597 {
 598   cpp_reader scan_in;
 599   cpp_options scan_options;
 600   struct fn_decl *fn;
 601   int i;
 602   register struct symbol_list *cur_symbols;
 603
 604   obstack_init (&scan_file_obstack);
 605
 606   cpp_reader_init (&scan_in);
 607   scan_in.data = &scan_options;
 608   cpp_options_init (&scan_options);
 609   i = cpp_handle_options (&scan_in, argc, argv);
 610   if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
 611     cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
 612   if (CPP_FATAL_ERRORS (&scan_in))
 613     exit (FATAL_EXIT_CODE);
 614
 615   if (! cpp_start_read (&scan_in, in_fname))
 616     exit (FATAL_EXIT_CODE);
 617   CPP_OPTIONS (&scan_in)->no_line_commands = 1;
 618
 619   scan_decls (&scan_in, argc, argv);
 620   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 621     check_macro_names (&scan_in, cur_symbols->names);
 622
 623   if (verbose && (scan_in.errors + warnings) > 0)
 624     fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
 625              inc_filename, scan_in.errors, warnings);
 626   if (scan_in.errors)
 627     exit (SUCCESS_EXIT_CODE);
 628
 629   /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
 630      If so, those functions are also required.  */
 631   if (special_file_handling == stdio_h
 632       && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
 633     {
 634       static char getchar_call[] = "getchar();";
 635       cpp_buffer *buf
 636         = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
 637       int old_written = CPP_WRITTEN (&scan_in);
 638       int seen_filbuf = 0;
 639
 640       /* Scan the macro expansion of "getchar();".  */
 641       for (;;)
 642         {
 643           enum cpp_token token = cpp_get_token (&scan_in);
 644           int length = CPP_WRITTEN (&scan_in) - old_written;
 645           CPP_SET_WRITTEN (&scan_in, old_written);
 646           if (token == CPP_EOF) /* Should not happen ...  */
 647             break;
 648           if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
 649             {
 650               cpp_pop_buffer (&scan_in);
 651               break;
 652             }
 653           if (token == CPP_NAME && length == 7
 654               && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
 655             seen_filbuf++;
 656         }
 657       if (seen_filbuf)
 658         {
 659           int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
 660           struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
 661           int need_flsbuf
 662             = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
 663
 664           /* Append "_filbuf" and/or "_flsbuf" to the required functions.  */
 665           if (need_filbuf + need_flsbuf)
 666             {
 667               char *new_list;
 668               if (need_filbuf)
 669                 SET_REQUIRED (fn);
 670               if (need_flsbuf)
 671                 SET_REQUIRED (flsbuf_fn);
 672               if (need_flsbuf + need_filbuf == 2)
 673                 new_list = "_filbuf\0_flsbuf\0";
 674               else if (need_flsbuf)
 675                 new_list = "_flsbuf\0";
 676               else /* if (need_flsbuf) */
 677                 new_list = "_filbuf\0";
 678               add_symbols (ANSI_SYMBOL, new_list);
 679               required_unseen_count += need_filbuf + need_flsbuf;
 680             }
 681         }
 682     }
 683
 684   if (required_unseen_count + partial_count + required_other
 685 #if ADD_MISSING_EXTERN_C
 686       + missing_extern_C_count
 687 #endif
 688       == 0)
 689     {
 690       if (verbose)
 691         fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
 692       exit (SUCCESS_EXIT_CODE);
 693     }
 694   if (!verbose)
 695     fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
 696   else
 697     {
 698       if (required_unseen_count)
 699         fprintf (stderr, "%s: %d missing function declarations.\n",
 700                  inc_filename, required_unseen_count);
 701       if (partial_count)
 702         fprintf (stderr, "%s: %d non-prototype function declarations.\n",
 703                  inc_filename, partial_count);
 704 #if ADD_MISSING_EXTERN_C
 705       if (missing_extern_C_count)
 706         fprintf (stderr,
 707                  "%s: %d declarations not protected by extern \"C\".\n",
 708                  inc_filename, missing_extern_C_count);
 709 #endif
 710     }
 711 }
 712
 713 void
 714 write_rbrac ()
 715 {
 716   struct fn_decl *fn;
 717   const char *cptr;
 718   register struct symbol_list *cur_symbols;
 719
 720   if (required_unseen_count)
 721     {
 722 #ifdef NO_IMPLICIT_EXTERN_C
 723       fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 724 #endif
 725     }
 726
 727   /* Now we print out prototypes for those functions that we haven't seen.  */
 728   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 729     {
 730       int if_was_emitted = 0;
 731       int name_len;
 732       cptr = cur_symbols->names;
 733       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
 734         {
 735           int macro_protect = 0;
 736
 737           if (cur_symbols->flags & MACRO_SYMBOL)
 738             continue;
 739
 740           fn = lookup_std_proto (cptr, name_len);
 741           if (fn == NULL || !REQUIRED (fn))
 742             continue;
 743
 744           if (!if_was_emitted)
 745             {
 746 /*            what about curses. ??? or _flsbuf/_filbuf ??? */
 747               if (cur_symbols->flags & ANSI_SYMBOL)
 748                 fprintf (outf,
 749          "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
 750               else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
 751                 fprintf (outf,
 752        "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
 753     ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
 754     : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
 755               else if (cur_symbols->flags & XOPEN_SYMBOL)
 756                 {
 757                 fprintf (outf,
 758        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 759    || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
 760                 }
 761               else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
 762                 {
 763                 fprintf (outf,
 764        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 765    || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
 766                 }
 767               else
 768                 {
 769                   fatal ("internal error for function %s", fn->fname);
 770                 }
 771               if_was_emitted = 1;
 772             }
 773
 774           /* In the case of memmove, protect in case the application
 775              defines it as a macro before including the header.  */
 776           if (!strcmp (fn->fname, "memmove")
 777               || !strcmp (fn->fname, "vprintf")
 778               || !strcmp (fn->fname, "vfprintf")
 779               || !strcmp (fn->fname, "vsprintf")
 780               || !strcmp (fn->fname, "rewinddir"))
 781             macro_protect = 1;
 782
 783           if (macro_protect)
 784             fprintf (outf, "#ifndef %s\n", fn->fname);
 785           fprintf (outf, "extern %s %s (%s);\n",
 786                    fn->rtype, fn->fname, fn->params);
 787           if (macro_protect)
 788             fprintf (outf, "#endif\n");
 789         }
 790       if (if_was_emitted)
 791         fprintf (outf,
 792                  "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
 793     }
 794   if (required_unseen_count)
 795     {
 796 #ifdef NO_IMPLICIT_EXTERN_C
 797       fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 798 #endif
 799     }
 800
 801   switch (special_file_handling)
 802     {
 803     case errno_h:
 804       if (!seen_errno)
 805         fprintf (outf, "extern int errno;\n");
 806       break;
 807     case stdlib_h:
 808       if (!seen_EXIT_FAILURE)
 809         fprintf (outf, "#define EXIT_FAILURE 1\n");
 810       if (!seen_EXIT_SUCCESS)
 811         fprintf (outf, "#define EXIT_SUCCESS 0\n");
 812       break;
 813     case sys_stat_h:
 814       if (!seen_S_ISBLK && seen_S_IFBLK)
 815         fprintf (outf,
 816                  "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
 817       if (!seen_S_ISCHR && seen_S_IFCHR)
 818         fprintf (outf,
 819                  "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
 820       if (!seen_S_ISDIR && seen_S_IFDIR)
 821         fprintf (outf,
 822                  "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
 823       if (!seen_S_ISFIFO && seen_S_IFIFO)
 824         fprintf (outf,
 825                  "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
 826       if (!seen_S_ISLNK && seen_S_IFLNK)
 827         fprintf (outf,
 828                  "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
 829       if (!seen_S_ISREG && seen_S_IFREG)
 830         fprintf (outf,
 831                  "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
 832       break;
 833     }
 834
 835
 836 #if ADD_MISSING_EXTERN_C
 837   if (missing_extern_C_count + required_unseen_count > 0)
 838     fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 839 #endif
 840 }
 841
 842 char *
 843 xstrdup (str)
 844      char *str;
 845 {
 846   char *copy = (char *) xmalloc (strlen (str) + 1);
 847   strcpy (copy, str);
 848   return copy;
 849 }
 850
 851 /* Returns 1 iff the file is properly protected from multiple inclusion:
 852    #ifndef PROTECT_NAME
 853    #define PROTECT_NAME
 854    #endif
 855
 856  */
 857
 858 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
 859 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
 860
 861 int
 862 inf_skip_spaces (c)
 863      int c;
 864 {
 865   for (;;)
 866     {
 867       if (c == ' ' || c == '\t')
 868         c = INF_GET ();
 869       else if (c == '/')
 870         {
 871           c = INF_GET ();
 872           if (c != '*')
 873             {
 874               INF_UNGET (c);
 875               return '/';
 876             }
 877           c = INF_GET ();
 878           for (;;)
 879             {
 880               if (c == EOF)
 881                 return EOF;
 882               else if (c != '*')
 883                 {
 884                   if (c == '\n')
 885                     source_lineno++, lineno++;
 886                   c = INF_GET ();
 887                 }
 888               else if ((c = INF_GET ()) == '/')
 889                 return INF_GET ();
 890             }
 891         }
 892       else
 893         break;
 894     }
 895   return c;
 896 }
 897
 898 /* Read into STR from inf_buffer upto DELIM.  */
 899
 900 int
 901 inf_read_upto (str, delim)
 902      sstring *str;
 903      int delim;
 904 {
 905   int ch;
 906   for (;;)
 907     {
 908       ch = INF_GET ();
 909       if (ch == EOF || ch == delim)
 910         break;
 911       SSTRING_PUT (str, ch);
 912     }
 913   MAKE_SSTRING_SPACE (str, 1);
 914   *str->ptr = 0;
 915   return ch;
 916 }
 917
 918 int
 919 inf_scan_ident (s, c)
 920      register sstring *s;
 921      int c;
 922 {
 923   s->ptr = s->base;
 924   if (isalpha (c) || c == '_')
 925     {
 926       for (;;)
 927         {
 928           SSTRING_PUT (s, c);
 929           c = INF_GET ();
 930           if (c == EOF || !(isalnum (c) || c == '_'))
 931             break;
 932         }
 933     }
 934   MAKE_SSTRING_SPACE (s, 1);
 935   *s->ptr = 0;
 936   return c;
 937 }
 938
 939 /* Returns 1 if the file is correctly protected against multiple
 940    inclusion, setting *ifndef_line to the line number of the initial #ifndef
 941    and setting *endif_line to the final #endif.
 942    Otherwise return 0.  */
 943
 944 int
 945 check_protection (ifndef_line, endif_line)
 946      int *ifndef_line, *endif_line;
 947 {
 948   int c;
 949   int if_nesting = 1; /* Level of nesting of #if's */
 950   char *protect_name = NULL; /* Identifier following initial #ifndef */
 951   int define_seen = 0;
 952
 953   /* Skip initial white space (including comments).  */
 954   for (;; lineno++)
 955     {
 956       c = inf_skip_spaces (' ');
 957       if (c == EOF)
 958         return 0;
 959       if (c != '\n')
 960         break;
 961     }
 962   if (c != '#')
 963     return 0;
 964   c = inf_scan_ident (&buf, inf_skip_spaces (' '));
 965   if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
 966     return 0;
 967
 968   /* So far so good: We've seen an initial #ifndef.  */
 969   *ifndef_line = lineno;
 970   c = inf_scan_ident (&buf, inf_skip_spaces (c));
 971   if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
 972     return 0;
 973   protect_name = xstrdup (buf.base);
 974
 975   INF_UNGET (c);
 976   c = inf_read_upto (&buf, '\n');
 977   if (c == EOF)
 978     return 0;
 979   lineno++;
 980
 981   for (;;)
 982     {
 983       c = inf_skip_spaces (' ');
 984       if (c == EOF)
 985         return 0;
 986       if (c == '\n')
 987         {
 988           lineno++;
 989           continue;
 990         }
 991       if (c != '#')
 992         goto skip_to_eol;
 993       c = inf_scan_ident (&buf, inf_skip_spaces (' '));
 994       if (SSTRING_LENGTH (&buf) == 0)
 995         ;
 996       else if (!strcmp (buf.base, "ifndef")
 997           || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
 998         {
 999           if_nesting++;
1000         }
1001       else if (!strcmp (buf.base, "endif"))
1002         {
1003           if_nesting--;
1004           if (if_nesting == 0)
1005             break;
1006         }
1007       else if (!strcmp (buf.base, "else"))
1008         {
1009           if (if_nesting == 1)
1010             return 0;
1011         }
1012       else if (!strcmp (buf.base, "define"))
1013         {
1014           if (if_nesting != 1)
1015             goto skip_to_eol;
1016           c = inf_skip_spaces (c);
1017           c = inf_scan_ident (&buf, c);
1018           if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1019             define_seen = 1;
1020         }
1021     skip_to_eol:
1022       for (;;)
1023         {
1024           if (c == '\n' || c == EOF)
1025             break;
1026           c = INF_GET ();
1027         }
1028       if (c == EOF)
1029         return 0;
1030       lineno++;
1031     }
1032
1033   if (!define_seen)
1034      return 0;
1035   *endif_line = lineno;
1036   /* Skip final white space (including comments).  */
1037   for (;;)
1038     {
1039       c = inf_skip_spaces (' ');
1040       if (c == EOF)
1041         break;
1042       if (c != '\n')
1043         return 0;
1044     }
1045
1046   return 1;
1047 }
1048
1049 int
1050 main (argc, argv)
1051      int argc;
1052      char **argv;
1053 {
1054   int inf_fd;
1055   struct stat sbuf;
1056   int c;
1057   int i, done;
1058   const char *cptr, **pptr;
1059   int ifndef_line;
1060   int endif_line;
1061   long to_read;
1062   long int inf_size;
1063   register struct symbol_list *cur_symbols;
1064
1065   if (argv[0] && argv[0][0])
1066     {
1067       register char *p;
1068
1069       progname = 0;
1070       for (p = argv[0]; *p; p++)
1071         if (*p == '/')
1072           progname = p;
1073       progname = progname ? progname+1 : argv[0];
1074     }
1075
1076   if (argc < 4)
1077     {
1078       fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1079                progname);
1080       exit (FATAL_EXIT_CODE);
1081     }
1082
1083   inc_filename = argv[1];
1084   inc_filename_length = strlen (inc_filename);
1085
1086 #ifdef FIXPROTO_IGNORE_LIST
1087   for (i = 0; files_to_ignore[i] != NULL; i++)
1088     {
1089       char *ignore_name = files_to_ignore[i];
1090       int ignore_len = strlen (ignore_name);
1091       if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1092         {
1093           if (ignore_name[ignore_len-1] == '/'
1094               || inc_filename[ignore_len] == '\0')
1095             {
1096               if (verbose)
1097                 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1098               exit (SUCCESS_EXIT_CODE);
1099             }
1100         }
1101
1102     }
1103 #endif
1104
1105   if (strcmp (inc_filename, "sys/stat.h") == 0)
1106     special_file_handling = sys_stat_h;
1107   else if (strcmp (inc_filename, "errno.h") == 0)
1108     special_file_handling = errno_h, required_other++;
1109   else if (strcmp (inc_filename, "stdlib.h") == 0)
1110     special_file_handling = stdlib_h, required_other+=2;
1111   else if (strcmp (inc_filename, "stdio.h") == 0)
1112     special_file_handling = stdio_h;
1113   include_entry = std_include_table;
1114   while (include_entry->name != NULL
1115          && (include_entry->name == CONTINUED
1116              || strcmp (inc_filename, include_entry->name) != 0))
1117     include_entry++;
1118
1119   if (include_entry->name != NULL)
1120     {
1121       struct std_include_entry *entry;
1122       cur_symbol_table_size = 0;
1123       for (entry = include_entry; ;)
1124         {
1125           add_symbols (entry->flags, entry->names);
1126           entry++;
1127           if (entry->name != CONTINUED)
1128             break;
1129         }
1130     }
1131   else
1132     symbol_table[0].names = NULL;
1133
1134   /* Count and mark the prototypes required for this include file.  */
1135   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1136     {
1137       int name_len;
1138       if (cur_symbols->flags & MACRO_SYMBOL)
1139         continue;
1140       cptr = cur_symbols->names;
1141       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1142         {
1143           struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1144           required_unseen_count++;
1145           if (fn == NULL)
1146             fprintf (stderr, "Internal error:  No prototype for %s\n", cptr);
1147           else
1148             SET_REQUIRED (fn);
1149         }
1150     }
1151
1152   read_scan_file (argv[2], argc - 4, argv + 4);
1153
1154   inf_fd = open (argv[2], O_RDONLY, 0666);
1155   if (inf_fd < 0)
1156     {
1157       fprintf (stderr, "%s: Cannot open '%s' for reading -",
1158                progname, argv[2]);
1159       perror (NULL);
1160       exit (FATAL_EXIT_CODE);
1161     }
1162   if (fstat (inf_fd, &sbuf) < 0)
1163     {
1164       fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1165       perror (NULL);
1166       exit (FATAL_EXIT_CODE);
1167     }
1168   inf_size = sbuf.st_size;
1169   inf_buffer = (char *) xmalloc (inf_size + 2);
1170   inf_buffer[inf_size] = '\n';
1171   inf_buffer[inf_size + 1] = '\0';
1172   inf_limit = inf_buffer + inf_size;
1173   inf_ptr = inf_buffer;
1174
1175   to_read = inf_size;
1176   while (to_read > 0)
1177     {
1178       long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1179       if (i < 0)
1180         {
1181           fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1182           perror (NULL);
1183           exit (FATAL_EXIT_CODE);
1184         }
1185       if (i == 0)
1186         {
1187           inf_size -= to_read;
1188           break;
1189         }
1190       to_read -= i;
1191     }
1192
1193   close (inf_fd);
1194
1195   /* If file doesn't end with '\n', add one.  */
1196   if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1197     inf_limit++;
1198
1199   unlink (argv[3]);
1200   outf = fopen (argv[3], "w");
1201   if (outf == NULL)
1202     {
1203       fprintf (stderr, "%s: Cannot open '%s' for writing -",
1204                progname, argv[3]);
1205       perror (NULL);
1206       exit (FATAL_EXIT_CODE);
1207     }
1208
1209   lineno = 1;
1210
1211   if (check_protection (&ifndef_line, &endif_line))
1212     {
1213       lbrac_line = ifndef_line+1;
1214       rbrac_line = endif_line;
1215     }
1216   else
1217     {
1218       lbrac_line = 1;
1219       rbrac_line = -1;
1220     }
1221
1222   /* Reset input file.  */
1223   inf_ptr = inf_buffer;
1224   lineno = 1;
1225
1226   for (;;)
1227     {
1228       if (lineno == lbrac_line)
1229         write_lbrac ();
1230       if (lineno == rbrac_line)
1231         write_rbrac ();
1232       for (;;)
1233         {
1234           struct fn_decl *fn;
1235           c = INF_GET ();
1236           if (c == EOF)
1237             break;
1238           if (isalpha (c) || c == '_')
1239             {
1240               c = inf_scan_ident (&buf, c);
1241               INF_UNGET (c);
1242               fputs (buf.base, outf);
1243               fn = lookup_std_proto (buf.base, strlen (buf.base));
1244               /* We only want to edit the declaration matching the one
1245                  seen by scan-decls, as there can be multiple
1246                  declarations, selected by #ifdef __STDC__ or whatever.  */
1247               if (fn && fn->partial && fn->partial->line_seen == lineno)
1248                 {
1249                   c = inf_skip_spaces (' ');
1250                   if (c == EOF)
1251                     break;
1252                   if (c == '(')
1253                     {
1254                       c = inf_skip_spaces (' ');
1255                       if (c == ')')
1256                         {
1257                           fprintf (outf, " _PARAMS((%s))", fn->params);
1258                         }
1259                       else
1260                         {
1261                           putc ('(', outf);
1262                           INF_UNGET (c);
1263                         }
1264                     }
1265                   else
1266                     fprintf (outf, " %c", c);
1267                 }
1268             }
1269           else
1270             {
1271               putc (c, outf);
1272               if (c == '\n')
1273                 break;
1274             }
1275         }
1276       if (c == EOF)
1277         break;
1278       lineno++;
1279     }
1280   if (rbrac_line < 0)
1281     write_rbrac ();
1282
1283   fclose (outf);
1284
1285   return 0;
1286 }
1287 \f
1288 /* Stub error functions.  These replace cpperror.c,
1289    because we want to suppress error messages.  */
1290
1291 void
1292 cpp_file_line_for_message (pfile, filename, line, column)
1293      cpp_reader *pfile;
1294      char *filename;
1295      int line, column;
1296 {
1297   if (!verbose)
1298     return;
1299   if (column > 0)
1300     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1301   else
1302     fprintf (stderr, "%s:%d: ", filename, line);
1303 }
1304
1305 void
1306 cpp_print_containing_files (pfile)
1307      cpp_reader *pfile;
1308 {
1309 }
1310
1311 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1312
1313 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1314      int is_error;
1315      cpp_reader *pfile;
1316      char *msg;
1317      char *arg1, *arg2, *arg3;
1318 {
1319   if (is_error == 1)
1320     pfile->errors++;
1321   else if (is_error > 1)
1322     pfile->errors = CPP_FATAL_LIMIT;
1323   if (!verbose)
1324     return;
1325   if (!is_error)
1326     fprintf (stderr, "warning: ");
1327   fprintf (stderr, msg, arg1, arg2, arg3);
1328   fprintf (stderr, "\n");
1329 }
1330
1331 void
1332 fatal (str, arg)
1333      char *str, *arg;
1334 {
1335   fprintf (stderr, "%s: %s: ", progname, inc_filename);
1336   fprintf (stderr, str, arg);
1337   fprintf (stderr, "\n");
1338   exit (FATAL_EXIT_CODE);
1339 }
1340
1341 void
1342 cpp_fatal (pfile, str, arg)
1343      cpp_reader *pfile;
1344      char *str, *arg;
1345 {
1346   fatal (str, arg);
1347 }
1348
1349 void
1350 cpp_pfatal_with_name (pfile, name)
1351      cpp_reader *pfile;
1352      char *name;
1353 {
1354   cpp_perror_with_name (pfile, name);
1355   exit (FATAL_EXIT_CODE);
1356 }