1/* Basic error reporting routines.
2   Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005
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, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA.  */
21
22/* warning, error, and fatal.  These definitions are suitable for use
23   in the generator programs; the compiler has a more elaborate suite
24   of diagnostic printers, found in diagnostic.c.  */
25
26#ifdef GENERATOR_FILE
27#include "bconfig.h"
28#else
29#include "config.h"
30#endif
31#include "system.h"
32#include "errors.h"
33
34/* Set this to argv[0] at the beginning of main.  */
35
36const char *progname;
37
38/* Starts out 0, set to 1 if error is called.  */
39
40int have_error = 0;
41
42/* Print a warning message - output produced, but there may be problems.  */
43
44void
45warning (int opt ATTRIBUTE_UNUSED, const char *format, ...)
46{
47  va_list ap;
48
49  va_start (ap, format);
50  fprintf (stderr, "%s: warning: ", progname);
51  vfprintf (stderr, format, ap);
52  va_end (ap);
53  fputc('\n', stderr);
54}
55
56
57/* Print an error message - we keep going but the output is unusable.  */
58
59void
60error (const char *format, ...)
61{
62  va_list ap;
63
64  va_start (ap, format);
65  fprintf (stderr, "%s: ", progname);
66  vfprintf (stderr, format, ap);
67  va_end (ap);
68  fputc('\n', stderr);
69
70  have_error = 1;
71}
72
73
74/* Fatal error - terminate execution immediately.  Does not return.  */
75
76void
77fatal (const char *format, ...)
78{
79  va_list ap;
80
81  va_start (ap, format);
82  fprintf (stderr, "%s: ", progname);
83  vfprintf (stderr, format, ap);
84  va_end (ap);
85  fputc('\n', stderr);
86  exit (FATAL_EXIT_CODE);
87}
88
89/* Similar, but say we got an internal error.  */
90
91void
92internal_error (const char *format, ...)
93{
94  va_list ap;
95
96  va_start (ap, format);
97  fprintf (stderr, "%s: Internal error: ", progname);
98  vfprintf (stderr, format, ap);
99  va_end (ap);
100  fputc ('\n', stderr);
101  exit (FATAL_EXIT_CODE);
102}
103
104/* Given a partial pathname as input, return another pathname that
105   shares no directory elements with the pathname of __FILE__.  This
106   is used by fancy_abort() to print `Internal compiler error in expr.c'
107   instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This
108   version if for the gen* programs and so needn't handle subdirectories.  */
109
110const char *
111trim_filename (const char *name)
112{
113  static const char this_file[] = __FILE__;
114  const char *p = name, *q = this_file;
115
116  /* Skip any parts the two filenames have in common.  */
117  while (*p == *q && *p != 0 && *q != 0)
118    p++, q++;
119
120  /* Now go backwards until the previous directory separator.  */
121  while (p > name && !IS_DIR_SEPARATOR (p[-1]))
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.  */
130void
131fancy_abort (const char *file, int line, const char *func)
132{
133  internal_error ("abort in %s, at %s:%d", func, trim_filename (file), line);
134}
135