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 "errors.h"
  29
  30 /* Set this to argv[0] at the beginning of main.  */
  31
  32 const char *progname;
  33
  34 /* Starts out 0, set to 1 if error is called.  */
  35
  36 int have_error = 0;
  37
  38 /* Print a warning message - output produced, but there may be problems.  */
  39
  40 void
  41 warning (const char *format, ...)
  42 {
  43   va_list ap;
  44
  45   va_start (ap, format);
  46   fprintf (stderr, "%s: warning: ", progname);
  47   vfprintf (stderr, format, ap);
  48   va_end (ap);
  49   fputc('\n', stderr);
  50 }
  51
  52
  53 /* Print an error message - we keep going but the output is unusable.  */
  54
  55 void
  56 error (const char *format, ...)
  57 {
  58   va_list ap;
  59
  60   va_start (ap, format);
  61   fprintf (stderr, "%s: ", progname);
  62   vfprintf (stderr, format, ap);
  63   va_end (ap);
  64   fputc('\n', stderr);
  65
  66   have_error = 1;
  67 }
  68
  69
  70 /* Fatal error - terminate execution immediately.  Does not return.  */
  71
  72 void
  73 fatal (const char *format, ...)
  74 {
  75   va_list ap;
  76
  77   va_start (ap, format);
  78   fprintf (stderr, "%s: ", progname);
  79   vfprintf (stderr, format, ap);
  80   va_end (ap);
  81   fputc('\n', stderr);
  82   exit (FATAL_EXIT_CODE);
  83 }
  84
  85 /* Similar, but say we got an internal error.  */
  86
  87 void
  88 internal_error (const char *format, ...)
  89 {
  90   va_list ap;
  91
  92   va_start (ap, format);
  93   fprintf (stderr, "%s: Internal error: ", progname);
  94   vfprintf (stderr, format, ap);
  95   va_end (ap);
  96   fputc ('\n', stderr);
  97   exit (FATAL_EXIT_CODE);
  98 }
  99
 100 /* Given a partial pathname as input, return another pathname that
 101    shares no directory elements with the pathname of __FILE__.  This
 102    is used by fancy_abort() to print `Internal compiler error in expr.c'
 103    instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This
 104    version if for the gen* programs and so needn't handle subdirectories.  */
 105
 106 const char *
 107 trim_filename (const char *name)
 108 {
 109   static const char this_file[] = __FILE__;
 110   const char *p = name, *q = this_file;
 111
 112   /* Skip any parts the two filenames have in common.  */
 113   while (*p == *q && *p != 0 && *q != 0)
 114     p++, q++;
 115
 116   /* Now go backwards until the previous directory separator.  */
 117   while (p > name && !IS_DIR_SEPARATOR (p[-1]))
 118     p--;
 119
 120   return p;
 121 }
 122
 123 /* "Fancy" abort.  Reports where in the compiler someone gave up.
 124    This file is used only by build programs, so we're not as polite as
 125    the version in diagnostic.c.  */
 126 void
 127 fancy_abort (const char *file, int line, const char *func)
 128 {
 129   internal_error ("abort in %s, at %s:%d", func, file, line);
 130 }