errors.c revision 132718 
1/* Basic error reporting routines.
2   Copyright (C) 1999, 2000, 2001, 2003
3   Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING.  If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, 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
32const char *progname;
33
34/* Starts out 0, set to 1 if error is called.  */
35
36int have_error = 0;
37
38/* Print a warning message - output produced, but there may be problems.  */
39
40void
41warning (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
55void
56error (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
72void
73fatal (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
87void
88internal_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
106const char *
107trim_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.  */
126void
127fancy_abort (const char *file, int line, const char *func)
128{
129  internal_error ("abort in %s, at %s:%d", func, file, line);
130}
131