Daily bump.
[official-gcc.git] / libcpp / errors.c
blob984737877be5e7827f0e515380b7f6298ff2e85f
1 /* Default error handlers for CPP Library.
2 Copyright (C) 1986-2016 Free Software Foundation, Inc.
3 Written by Per Bothner, 1994.
4 Based on CCCP program by Paul Rubin, June 1986
5 Adapted to ANSI C, Richard Stallman, Jan 1987
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3, or (at your option) any
10 later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>.
21 In other words, you are welcome to use, share and improve this program.
22 You are forbidden to forbid anyone else to use, share and improve
23 what you give them. Help stamp out software-hoarding! */
25 #include "config.h"
26 #include "system.h"
27 #include "cpplib.h"
28 #include "internal.h"
30 /* Print a diagnostic at the location of the previously lexed token. */
32 ATTRIBUTE_FPTR_PRINTF(4,0)
33 static bool
34 cpp_diagnostic (cpp_reader * pfile, int level, int reason,
35 const char *msgid, va_list *ap)
37 source_location src_loc;
38 bool ret;
40 if (CPP_OPTION (pfile, traditional))
42 if (pfile->state.in_directive)
43 src_loc = pfile->directive_line;
44 else
45 src_loc = pfile->line_table->highest_line;
47 /* We don't want to refer to a token before the beginning of the
48 current run -- that is invalid. */
49 else if (pfile->cur_token == pfile->cur_run->base)
51 src_loc = 0;
53 else
55 src_loc = pfile->cur_token[-1].src_loc;
58 if (!pfile->cb.error)
59 abort ();
60 rich_location richloc (pfile->line_table, src_loc);
61 ret = pfile->cb.error (pfile, level, reason, &richloc, _(msgid), ap);
63 return ret;
66 /* Print a warning or error, depending on the value of LEVEL. */
68 bool
69 cpp_error (cpp_reader * pfile, int level, const char *msgid, ...)
71 va_list ap;
72 bool ret;
74 va_start (ap, msgid);
76 ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap);
78 va_end (ap);
79 return ret;
82 /* Print a warning. The warning reason may be given in REASON. */
84 bool
85 cpp_warning (cpp_reader * pfile, int reason, const char *msgid, ...)
87 va_list ap;
88 bool ret;
90 va_start (ap, msgid);
92 ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap);
94 va_end (ap);
95 return ret;
98 /* Print a pedantic warning. The warning reason may be given in REASON. */
100 bool
101 cpp_pedwarning (cpp_reader * pfile, int reason, const char *msgid, ...)
103 va_list ap;
104 bool ret;
106 va_start (ap, msgid);
108 ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap);
110 va_end (ap);
111 return ret;
114 /* Print a warning, including system headers. The warning reason may be
115 given in REASON. */
117 bool
118 cpp_warning_syshdr (cpp_reader * pfile, int reason, const char *msgid, ...)
120 va_list ap;
121 bool ret;
123 va_start (ap, msgid);
125 ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap);
127 va_end (ap);
128 return ret;
131 /* Print a diagnostic at a specific location. */
133 ATTRIBUTE_FPTR_PRINTF(6,0)
134 static bool
135 cpp_diagnostic_with_line (cpp_reader * pfile, int level, int reason,
136 source_location src_loc, unsigned int column,
137 const char *msgid, va_list *ap)
139 bool ret;
141 if (!pfile->cb.error)
142 abort ();
143 rich_location richloc (pfile->line_table, src_loc);
144 if (column)
145 richloc.override_column (column);
146 ret = pfile->cb.error (pfile, level, reason, &richloc, _(msgid), ap);
148 return ret;
151 /* Print a warning or error, depending on the value of LEVEL. */
153 bool
154 cpp_error_with_line (cpp_reader *pfile, int level,
155 source_location src_loc, unsigned int column,
156 const char *msgid, ...)
158 va_list ap;
159 bool ret;
161 va_start (ap, msgid);
163 ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc,
164 column, msgid, &ap);
166 va_end (ap);
167 return ret;
170 /* Print a warning. The warning reason may be given in REASON. */
172 bool
173 cpp_warning_with_line (cpp_reader *pfile, int reason,
174 source_location src_loc, unsigned int column,
175 const char *msgid, ...)
177 va_list ap;
178 bool ret;
180 va_start (ap, msgid);
182 ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc,
183 column, msgid, &ap);
185 va_end (ap);
186 return ret;
189 /* Print a pedantic warning. The warning reason may be given in REASON. */
191 bool
192 cpp_pedwarning_with_line (cpp_reader *pfile, int reason,
193 source_location src_loc, unsigned int column,
194 const char *msgid, ...)
196 va_list ap;
197 bool ret;
199 va_start (ap, msgid);
201 ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc,
202 column, msgid, &ap);
204 va_end (ap);
205 return ret;
208 /* Print a warning, including system headers. The warning reason may be
209 given in REASON. */
211 bool
212 cpp_warning_with_line_syshdr (cpp_reader *pfile, int reason,
213 source_location src_loc, unsigned int column,
214 const char *msgid, ...)
216 va_list ap;
217 bool ret;
219 va_start (ap, msgid);
221 ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc,
222 column, msgid, &ap);
224 va_end (ap);
225 return ret;
228 /* Print a warning or error, depending on the value of LEVEL. Include
229 information from errno. */
231 bool
232 cpp_errno (cpp_reader *pfile, int level, const char *msgid)
234 return cpp_error (pfile, level, "%s: %s", _(msgid), xstrerror (errno));
237 /* Print a warning or error, depending on the value of LEVEL. Include
238 information from errno. Unlike cpp_errno, the argument is a filename
239 that is not localized, but "" is replaced with localized "stdout". */
241 bool
242 cpp_errno_filename (cpp_reader *pfile, int level, const char *filename)
244 if (filename[0] == '\0')
245 filename = _("stdout");
247 return cpp_error (pfile, level, "%s: %s", filename, xstrerror (errno));