Use symbolic codes for exit.

From-SVN: r13938

gcc/fix-header.c

 /* fix-header.c - Make C header file suitable for C++.
-   Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
 
 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -624,7 +624,7 @@ read_scan_file (in_fname, argc, argv)
     fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
 	     inc_filename, scan_in.errors, warnings);
   if (scan_in.errors)
-    exit (0);
+    exit (SUCCESS_EXIT_CODE);
 
   /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
      If so, those functions are also required.  */
@@ -689,7 +689,7 @@ read_scan_file (in_fname, argc, argv)
     {
       if (verbose)
 	fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
-      exit (0);
+      exit (SUCCESS_EXIT_CODE);
     }
   if (!verbose)
     fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
@@ -1077,7 +1077,7 @@ main (argc, argv)
     {
       fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
 	       progname);
-      exit (-1);
+      exit (FATAL_EXIT_CODE);
     }
 
   inc_filename = argv[1];
@@ -1095,7 +1095,7 @@ main (argc, argv)
 	    {
 	      if (verbose)
 		fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
-	      exit (0);
+	      exit (SUCCESS_EXIT_CODE);
 	    }
 	}
 	  
@@ -1157,13 +1157,13 @@ main (argc, argv)
       fprintf (stderr, "%s: Cannot open '%s' for reading -",
 	       progname, argv[2]);
       perror (NULL);
-      exit (-1);
+      exit (FATAL_EXIT_CODE);
     }
   if (fstat (inf_fd, &sbuf) < 0)
     {
       fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
       perror (NULL);
-      exit (-1);
+      exit (FATAL_EXIT_CODE);
     }
   inf_size = sbuf.st_size;
   inf_buffer = (char *) xmalloc (inf_size + 2);
@@ -1180,7 +1180,7 @@ main (argc, argv)
 	{
 	  fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
 	  perror (NULL);
-	  exit (-1);
+	  exit (FATAL_EXIT_CODE);
 	}
       if (i == 0)
 	{
@@ -1203,7 +1203,7 @@ main (argc, argv)
       fprintf (stderr, "%s: Cannot open '%s' for writing -",
 	       progname, argv[3]);
       perror (NULL);
-      exit (-1);
+      exit (FATAL_EXIT_CODE);
     }
 
   lineno = 1;

gcc/gcov.c

 /* Gcov.c: prepend line execution counts and branch probabilities to a
    source file.
-   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997 Free Software
-   Foundation, Inc.
+   Copyright (C) 1990, 91, 92, 93, 94, 96, 1997 Free Software Foundation, Inc.
    Contributed by James E. Wilson of Cygnus Support.
    Mongled by Bob Manson of Cygnus Support.
 
@@ -252,7 +251,7 @@ xmalloc (size)
   if (value == 0)
     {
       fprintf (stderr, "error: virtual memory exhausted");
-      exit (1);
+      exit (FATAL_EXIT_CODE);
     }
   return value;
 }

gcc/protoize.c

 /* Protoize program - Original version by Ron Guilmette (rfg@segfault.us.com).
-   Copyright (C) 1989, 92-95, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1989, 92-96, 1997 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -666,7 +666,7 @@ xmalloc (byte_count)
   if (rv == NULL)
     {
       fprintf (stderr, "\n%s: virtual memory exceeded\n", pname);
-      exit (1);
+      exit (FATAL_EXIT_CODE);
       return 0;		/* avoid warnings */
     }
   else
@@ -686,7 +686,7 @@ xrealloc (old_space, byte_count)
   if (rv == NULL)
     {
       fprintf (stderr, "\n%s: virtual memory exceeded\n", pname);
-      exit (1);
+      exit (FATAL_EXIT_CODE);
       return 0;		/* avoid warnings */
     }
   else
@@ -739,7 +739,7 @@ void
 fancy_abort ()
 {
   fprintf (stderr, "%s: internal abort\n", pname);
-  exit (1);
+  exit (FATAL_EXIT_CODE);
 }
 
 /* Make a duplicate of the first N bytes of a given string in a newly
@@ -877,7 +877,7 @@ usage ()
   fprintf (stderr, "%s: usage '%s [ -VqfnkNlgC ] [ -B <dirname> ] [ filename ... ]'\n",
 	   pname, pname);
 #endif /* !defined (UNPROTOIZE) */
-  exit (1);
+  exit (FATAL_EXIT_CODE);
 }
 
 /* Return true if the given filename (assumed to be an absolute filename)
@@ -1364,18 +1364,18 @@ abspath (cwd, rel_filename)
                     while (outp >= abs_buffer && *outp != '/')
               	outp--;
                     if (outp < abs_buffer)
-                {
-                  /* Catch cases like /.. where we try to backup to a
-                     point above the absolute root of the logical file
-                     system.  */
-
-              	  fprintf (stderr, "%s: invalid file name: %s\n",
-			   pname, rel_filename);
-              	  exit (1);
-              	}
+		      {
+			/* Catch cases like /.. where we try to backup to a
+			   point above the absolute root of the logical file
+			   system.  */
+
+			fprintf (stderr, "%s: invalid file name: %s\n",
+				 pname, rel_filename);
+			exit (FATAL_EXIT_CODE);
+		      }
                     *++outp = '\0';
                     continue;
-            }
+		  }
         }
       *outp++ = *inp++;
     }
@@ -1541,7 +1541,7 @@ aux_info_corrupted ()
 {
   fprintf (stderr, "\n%s: fatal error: aux info file corrupted at line %d\n",
 	   pname, current_aux_info_lineno);
-  exit (1);
+  exit (FATAL_EXIT_CODE);
 }
 
 /* ??? This comment is vague.  Say what the condition is for.  */
@@ -1867,7 +1867,7 @@ save_def_or_dec (l, is_syscalls)
 			 def_dec_p->file->hash_entry->symbol,
 			 def_dec_p->line,
 			 def_dec_p->hash_entry->symbol);
-                exit (1);
+                exit (FATAL_EXIT_CODE);
               }
             free_def_dec (def_dec_p);
             return;
@@ -4575,7 +4575,7 @@ main (argc, argv)
     {
       fprintf (stderr, "%s: cannot get working directory: %s\n",
 	       pname, my_strerror(errno));
-      exit (1);
+      exit (FATAL_EXIT_CODE);
     }
 
   /* By default, convert the files in the current directory.  */
@@ -4700,9 +4700,8 @@ main (argc, argv)
         fprintf (stderr, "%s: %s\n", pname, version_string);
       do_processing ();
     }
-  if (errors)
-    exit (1);
-  else
-    exit (0);
+
+  exit (errors ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
+
   return 1;
 }