errors.c revision 90075 
1/* Basic error reporting routines.
2   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING.  If not, write to the Free
18Software Foundation, 59 Temple Place - Suite 330, Boston, MA
1902111-1307, 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
31const char *progname;
32
33/* Starts out 0, set to 1 if error is called.  */
34
35int have_error = 0;
36
37/* Print a warning message - output produced, but there may be problems.  */
38
39void
40warning 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
54void
55error 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
71void
72fatal 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
86void
87internal_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 needn't handle subdirectories.  */
104
105const char *
106trim_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.  */
130void
131fancy_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}
138