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 "errors.h"
  28
  29 /* Set this to argv[0] at the beginning of main.  */
  30
  31 const char *progname;
  32
  33 /* Starts out 0, set to 1 if error is called.  */
  34
  35 int have_error = 0;
  36
  37 /* Print a warning message - output produced, but there may be problems.  */
  38
  39 void
  40 warning VPARAMS ((const char *format, ...))
  41 {
  42   VA_OPEN (ap, format);
  43   VA_FIXEDARG (ap, const char *, format);
  44
  45   fprintf (stderr, "%s: warning: ", progname);
  46   vfprintf (stderr, format, ap);
  47   VA_CLOSE (ap);
  48   fputc('\n', stderr);
  49 }
  50
  51
  52 /* Print an error message - we keep going but the output is unusable.  */
  53
  54 void
  55 error VPARAMS ((const char *format, ...))
  56 {
  57   VA_OPEN (ap, format);
  58   VA_FIXEDARG (ap, const char *, format);
  59
  60   fprintf (stderr, "%s: ", progname);
  61   vfprintf (stderr, format, ap);
  62   VA_CLOSE (ap);
  63   fputc('\n', stderr);
  64
  65   have_error = 1;
  66 }
  67
  68
  69 /* Fatal error - terminate execution immediately.  Does not return.  */
  70
  71 void
  72 fatal VPARAMS ((const char *format, ...))
  73 {
  74   VA_OPEN (ap, format);
  75   VA_FIXEDARG (ap, const char *, format);
  76
  77   fprintf (stderr, "%s: ", progname);
  78   vfprintf (stderr, format, ap);
  79   VA_CLOSE (ap);
  80   fputc('\n', stderr);
  81   exit (FATAL_EXIT_CODE);
  82 }
  83
  84 /* Similar, but say we got an internal error.  */
  85
  86 void
  87 internal_error VPARAMS ((const char *format, ...))
  88 {
  89   VA_OPEN (ap, format);
  90   VA_FIXEDARG (ap, const char *, format);
  91
  92   fprintf (stderr, "%s: Internal error: ", progname);
  93   vfprintf (stderr, format, ap);
  94   VA_CLOSE (ap);
  95   fputc ('\n', stderr);
  96   exit (FATAL_EXIT_CODE);
  97 }
  98
  99 /* Given a partial pathname as input, return another pathname that
 100    shares no directory elements with the pathname of __FILE__.  This
 101    is used by fancy_abort() to print `Internal compiler error in expr.c'
 102    instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This
 103    version if for the gen* programs and so neededn't handle subdirectories.  */
 104
 105 const char *
 106 trim_filename (name)
 107      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 && p[-1] != DIR_SEPARATOR
 118 #ifdef DIR_SEPARATOR_2
 119          && p[-1] != DIR_SEPARATOR_2
 120 #endif
 121          )
 122     p--;
 123
 124   return p;
 125 }
 126
 127 /* "Fancy" abort.  Reports where in the compiler someone gave up.
 128    This file is used only by build programs, so we're not as polite as
 129    the version in diagnostic.c.  */
 130 void
 131 fancy_abort (file, line, func)
 132      const char *file;
 133      int line;
 134      const char *func;
 135 {
 136   internal_error ("abort in %s, at %s:%d", func, file, line);
 137 }