gcc/errors.c

   1 /* Basic error reporting routines.
   2    Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to the Free
  18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 /* warning, error, and fatal.  These definitions are suitable for use
  22    in the generator programs; eventually we would like to use them in
  23    cc1 too, but that's a longer term project.  */
  24
  25 #include "config.h"
  26 #include "system.h"
  27 #include "coretypes.h"
  28 #include "tm.h"
  29 #include "errors.h"
  30
  31 /* Set this to argv[0] at the beginning of main.  */
  32
  33 const char *progname;
  34
  35 /* Starts out 0, set to 1 if error is called.  */
  36
  37 int have_error = 0;
  38
  39 /* Print a warning message - output produced, but there may be problems.  */
  40
  41 void
  42 warning VPARAMS ((const char *format, ...))
  43 {
  44   VA_OPEN (ap, format);
  45   VA_FIXEDARG (ap, const char *, format);
  46
  47   fprintf (stderr, "%s: warning: ", progname);
  48   vfprintf (stderr, format, ap);
  49   VA_CLOSE (ap);
  50   fputc('\n', stderr);
  51 }
  52
  53
  54 /* Print an error message - we keep going but the output is unusable.  */
  55
  56 void
  57 error VPARAMS ((const char *format, ...))
  58 {
  59   VA_OPEN (ap, format);
  60   VA_FIXEDARG (ap, const char *, format);
  61
  62   fprintf (stderr, "%s: ", progname);
  63   vfprintf (stderr, format, ap);
  64   VA_CLOSE (ap);
  65   fputc('\n', stderr);
  66
  67   have_error = 1;
  68 }
  69
  70
  71 /* Fatal error - terminate execution immediately.  Does not return.  */
  72
  73 void
  74 fatal VPARAMS ((const char *format, ...))
  75 {
  76   VA_OPEN (ap, format);
  77   VA_FIXEDARG (ap, const char *, format);
  78
  79   fprintf (stderr, "%s: ", progname);
  80   vfprintf (stderr, format, ap);
  81   VA_CLOSE (ap);
  82   fputc('\n', stderr);
  83   exit (FATAL_EXIT_CODE);
  84 }
  85
  86 /* Similar, but say we got an internal error.  */
  87
  88 void
  89 internal_error VPARAMS ((const char *format, ...))
  90 {
  91   VA_OPEN (ap, format);
  92   VA_FIXEDARG (ap, const char *, format);
  93
  94   fprintf (stderr, "%s: Internal error: ", progname);
  95   vfprintf (stderr, format, ap);
  96   VA_CLOSE (ap);
  97   fputc ('\n', stderr);
  98   exit (FATAL_EXIT_CODE);
  99 }
 100
 101 /* Given a partial pathname as input, return another pathname that
 102    shares no directory elements with the pathname of __FILE__.  This
 103    is used by fancy_abort() to print `Internal compiler error in expr.c'
 104    instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This
 105    version if for the gen* programs and so needn't handle subdirectories.  */
 106
 107 const char *
 108 trim_filename (name)
 109      const char *name;
 110 {
 111   static const char this_file[] = __FILE__;
 112   const char *p = name, *q = this_file;
 113
 114   /* Skip any parts the two filenames have in common.  */
 115   while (*p == *q && *p != 0 && *q != 0)
 116     p++, q++;
 117
 118   /* Now go backwards until the previous directory separator.  */
 119   while (p > name && p[-1] != DIR_SEPARATOR
 120 #ifdef DIR_SEPARATOR_2
 121          && p[-1] != DIR_SEPARATOR_2
 122 #endif
 123          )
 124     p--;
 125
 126   return p;
 127 }
 128
 129 /* "Fancy" abort.  Reports where in the compiler someone gave up.
 130    This file is used only by build programs, so we're not as polite as
 131    the version in diagnostic.c.  */
 132 void
 133 fancy_abort (file, line, func)
 134      const char *file;
 135      int line;
 136      const char *func;
 137 {
 138   internal_error ("abort in %s, at %s:%d", func, file, line);
 139 }