gcc/errors.c

   1 /* Basic error reporting routines.
   2    Copyright (C) 1999, 2000, 2001, 2003
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 /* warning, error, and fatal.  These definitions are suitable for use
  23    in the generator programs; eventually we would like to use them in
  24    cc1 too, but that's a longer term project.  */
  25
  26 #include "config.h"
  27 #include "system.h"
  28 #include "coretypes.h"
  29 #include "tm.h"
  30 #include "errors.h"
  31
  32 /* Set this to argv[0] at the beginning of main.  */
  33
  34 const char *progname;
  35
  36 /* Starts out 0, set to 1 if error is called.  */
  37
  38 int have_error = 0;
  39
  40 /* Print a warning message - output produced, but there may be problems.  */
  41
  42 void
  43 warning (const char *format, ...)
  44 {
  45   va_list ap;
  46
  47   va_start (ap, format);
  48   fprintf (stderr, "%s: warning: ", progname);
  49   vfprintf (stderr, format, ap);
  50   va_end (ap);
  51   fputc('\n', stderr);
  52 }
  53
  54
  55 /* Print an error message - we keep going but the output is unusable.  */
  56
  57 void
  58 error (const char *format, ...)
  59 {
  60   va_list ap;
  61
  62   va_start (ap, format);
  63   fprintf (stderr, "%s: ", progname);
  64   vfprintf (stderr, format, ap);
  65   va_end (ap);
  66   fputc('\n', stderr);
  67
  68   have_error = 1;
  69 }
  70
  71
  72 /* Fatal error - terminate execution immediately.  Does not return.  */
  73
  74 void
  75 fatal (const char *format, ...)
  76 {
  77   va_list ap;
  78
  79   va_start (ap, format);
  80   fprintf (stderr, "%s: ", progname);
  81   vfprintf (stderr, format, ap);
  82   va_end (ap);
  83   fputc('\n', stderr);
  84   exit (FATAL_EXIT_CODE);
  85 }
  86
  87 /* Similar, but say we got an internal error.  */
  88
  89 void
  90 internal_error (const char *format, ...)
  91 {
  92   va_list ap;
  93
  94   va_start (ap, format);
  95   fprintf (stderr, "%s: Internal error: ", progname);
  96   vfprintf (stderr, format, ap);
  97   va_end (ap);
  98   fputc ('\n', stderr);
  99   exit (FATAL_EXIT_CODE);
 100 }
 101
 102 /* Given a partial pathname as input, return another pathname that
 103    shares no directory elements with the pathname of __FILE__.  This
 104    is used by fancy_abort() to print `Internal compiler error in expr.c'
 105    instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This
 106    version if for the gen* programs and so needn't handle subdirectories.  */
 107
 108 const char *
 109 trim_filename (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 (const char *file, int line, const char *func)
 134 {
 135   internal_error ("abort in %s, at %s:%d", func, file, line);
 136 }