Mercurial > hg > CbC > CbC_gcc
annotate gcc/diagnostic.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Language-independent diagnostic subroutines for the GNU Compiler Collection |
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2 Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
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3 2009, 2010 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Gabriel Dos Reis <gdr@codesourcery.com> |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 | |
| 23 /* This file implements the language independent aspect of diagnostic | |
| 24 message module. */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "system.h" | |
| 28 #include "coretypes.h" | |
| 29 #include "version.h" | |
| 30 #include "input.h" | |
| 31 #include "intl.h" | |
| 32 #include "diagnostic.h" | |
| 33 | |
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34 #define pedantic_warning_kind(DC) \ |
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35 ((DC)->pedantic_errors ? DK_ERROR : DK_WARNING) |
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36 #define permissive_error_kind(DC) ((DC)->permissive ? DK_WARNING : DK_ERROR) |
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37 #define permissive_error_option(DC) ((DC)->opt_permissive) |
| 0 | 38 |
| 39 /* Prototypes. */ | |
| 40 static char *build_message_string (const char *, ...) ATTRIBUTE_PRINTF_1; | |
| 41 | |
| 42 static void error_recursion (diagnostic_context *) ATTRIBUTE_NORETURN; | |
| 43 | |
| 44 static void diagnostic_action_after_output (diagnostic_context *, | |
| 45 diagnostic_info *); | |
| 46 static void real_abort (void) ATTRIBUTE_NORETURN; | |
| 47 | |
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48 /* Name of program invoked, sans directories. */ |
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49 |
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50 const char *progname; |
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51 |
| 0 | 52 /* A diagnostic_context surrogate for stderr. */ |
| 53 static diagnostic_context global_diagnostic_context; | |
| 54 diagnostic_context *global_dc = &global_diagnostic_context; | |
| 55 | |
| 56 | |
| 57 /* Return a malloc'd string containing MSG formatted a la printf. The | |
| 58 caller is responsible for freeing the memory. */ | |
| 59 static char * | |
| 60 build_message_string (const char *msg, ...) | |
| 61 { | |
| 62 char *str; | |
| 63 va_list ap; | |
| 64 | |
| 65 va_start (ap, msg); | |
| 66 vasprintf (&str, msg, ap); | |
| 67 va_end (ap); | |
| 68 | |
| 69 return str; | |
| 70 } | |
| 71 | |
| 72 /* Same as diagnostic_build_prefix, but only the source FILE is given. */ | |
| 73 char * | |
| 74 file_name_as_prefix (const char *f) | |
| 75 { | |
| 76 return build_message_string ("%s: ", f); | |
| 77 } | |
| 78 | |
| 79 | |
| 80 | |
| 81 /* Initialize the diagnostic message outputting machinery. */ | |
| 82 void | |
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83 diagnostic_initialize (diagnostic_context *context, int n_opts) |
| 0 | 84 { |
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85 int i; |
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86 |
| 0 | 87 /* Allocate a basic pretty-printer. Clients will replace this a |
| 88 much more elaborated pretty-printer if they wish. */ | |
| 89 context->printer = XNEW (pretty_printer); | |
| 90 pp_construct (context->printer, NULL, 0); | |
| 91 /* By default, diagnostics are sent to stderr. */ | |
| 92 context->printer->buffer->stream = stderr; | |
| 93 /* By default, we emit prefixes once per message. */ | |
| 94 context->printer->wrapping.rule = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
| 95 | |
| 96 memset (context->diagnostic_count, 0, sizeof context->diagnostic_count); | |
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97 context->some_warnings_are_errors = false; |
| 0 | 98 context->warning_as_error_requested = false; |
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99 context->n_opts = n_opts; |
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100 context->classify_diagnostic = XNEWVEC (diagnostic_t, n_opts); |
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101 for (i = 0; i < n_opts; i++) |
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102 context->classify_diagnostic[i] = DK_UNSPECIFIED; |
| 0 | 103 context->show_option_requested = false; |
| 104 context->abort_on_error = false; | |
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105 context->show_column = false; |
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106 context->pedantic_errors = false; |
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107 context->permissive = false; |
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108 context->opt_permissive = 0; |
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109 context->fatal_errors = false; |
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110 context->dc_inhibit_warnings = false; |
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111 context->dc_warn_system_headers = false; |
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112 context->max_errors = 0; |
| 0 | 113 context->internal_error = NULL; |
| 114 diagnostic_starter (context) = default_diagnostic_starter; | |
| 115 diagnostic_finalizer (context) = default_diagnostic_finalizer; | |
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116 context->option_enabled = NULL; |
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117 context->option_state = NULL; |
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118 context->option_name = NULL; |
| 0 | 119 context->last_module = 0; |
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120 context->x_data = NULL; |
| 0 | 121 context->lock = 0; |
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122 context->inhibit_notes_p = false; |
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123 } |
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124 |
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125 /* Do any cleaning up required after the last diagnostic is emitted. */ |
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126 |
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127 void |
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128 diagnostic_finish (diagnostic_context *context) |
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129 { |
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130 /* Some of the errors may actually have been warnings. */ |
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131 if (context->some_warnings_are_errors) |
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132 { |
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133 /* -Werror was given. */ |
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134 if (context->warning_as_error_requested) |
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135 pp_verbatim (context->printer, |
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136 _("%s: all warnings being treated as errors\n"), |
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137 progname); |
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138 /* At least one -Werror= was given. */ |
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139 else |
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140 pp_verbatim (context->printer, |
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141 _("%s: some warnings being treated as errors\n"), |
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142 progname); |
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143 pp_flush (context->printer); |
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144 } |
| 0 | 145 } |
| 146 | |
| 147 /* Initialize DIAGNOSTIC, where the message MSG has already been | |
| 148 translated. */ | |
| 149 void | |
| 150 diagnostic_set_info_translated (diagnostic_info *diagnostic, const char *msg, | |
| 151 va_list *args, location_t location, | |
| 152 diagnostic_t kind) | |
| 153 { | |
| 154 diagnostic->message.err_no = errno; | |
| 155 diagnostic->message.args_ptr = args; | |
| 156 diagnostic->message.format_spec = msg; | |
| 157 diagnostic->location = location; | |
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158 diagnostic->override_column = 0; |
| 0 | 159 diagnostic->kind = kind; |
| 160 diagnostic->option_index = 0; | |
| 161 } | |
| 162 | |
| 163 /* Initialize DIAGNOSTIC, where the message GMSGID has not yet been | |
| 164 translated. */ | |
| 165 void | |
| 166 diagnostic_set_info (diagnostic_info *diagnostic, const char *gmsgid, | |
| 167 va_list *args, location_t location, | |
| 168 diagnostic_t kind) | |
| 169 { | |
| 170 diagnostic_set_info_translated (diagnostic, _(gmsgid), args, location, kind); | |
| 171 } | |
| 172 | |
| 173 /* Return a malloc'd string describing a location. The caller is | |
| 174 responsible for freeing the memory. */ | |
| 175 char * | |
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176 diagnostic_build_prefix (diagnostic_context *context, |
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177 diagnostic_info *diagnostic) |
| 0 | 178 { |
| 179 static const char *const diagnostic_kind_text[] = { | |
| 180 #define DEFINE_DIAGNOSTIC_KIND(K, T) (T), | |
| 181 #include "diagnostic.def" | |
| 182 #undef DEFINE_DIAGNOSTIC_KIND | |
| 183 "must-not-happen" | |
| 184 }; | |
| 185 const char *text = _(diagnostic_kind_text[diagnostic->kind]); | |
| 186 expanded_location s = expand_location (diagnostic->location); | |
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187 if (diagnostic->override_column) |
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188 s.column = diagnostic->override_column; |
| 0 | 189 gcc_assert (diagnostic->kind < DK_LAST_DIAGNOSTIC_KIND); |
| 190 | |
| 191 return | |
| 192 (s.file == NULL | |
| 193 ? build_message_string ("%s: %s", progname, text) | |
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194 : context->show_column |
| 0 | 195 ? build_message_string ("%s:%d:%d: %s", s.file, s.line, s.column, text) |
| 196 : build_message_string ("%s:%d: %s", s.file, s.line, text)); | |
| 197 } | |
| 198 | |
| 199 /* Take any action which is expected to happen after the diagnostic | |
| 200 is written out. This function does not always return. */ | |
| 201 static void | |
| 202 diagnostic_action_after_output (diagnostic_context *context, | |
| 203 diagnostic_info *diagnostic) | |
| 204 { | |
| 205 switch (diagnostic->kind) | |
| 206 { | |
| 207 case DK_DEBUG: | |
| 208 case DK_NOTE: | |
| 209 case DK_ANACHRONISM: | |
| 210 case DK_WARNING: | |
| 211 break; | |
| 212 | |
| 213 case DK_ERROR: | |
| 214 case DK_SORRY: | |
| 215 if (context->abort_on_error) | |
| 216 real_abort (); | |
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217 if (context->fatal_errors) |
| 0 | 218 { |
| 219 fnotice (stderr, "compilation terminated due to -Wfatal-errors.\n"); | |
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220 diagnostic_finish (context); |
| 0 | 221 exit (FATAL_EXIT_CODE); |
| 222 } | |
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223 if (context->max_errors != 0 |
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224 && ((unsigned) (diagnostic_kind_count (context, DK_ERROR) |
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225 + diagnostic_kind_count (context, DK_SORRY)) |
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226 >= context->max_errors)) |
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227 { |
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228 fnotice (stderr, |
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229 "compilation terminated due to -fmax-errors=%u.\n", |
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230 context->max_errors); |
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231 diagnostic_finish (context); |
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232 exit (FATAL_EXIT_CODE); |
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233 } |
| 0 | 234 break; |
| 235 | |
| 236 case DK_ICE: | |
| 237 if (context->abort_on_error) | |
| 238 real_abort (); | |
| 239 | |
| 240 fnotice (stderr, "Please submit a full bug report,\n" | |
| 241 "with preprocessed source if appropriate.\n" | |
| 242 "See %s for instructions.\n", bug_report_url); | |
| 243 exit (ICE_EXIT_CODE); | |
| 244 | |
| 245 case DK_FATAL: | |
| 246 if (context->abort_on_error) | |
| 247 real_abort (); | |
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248 diagnostic_finish (context); |
| 0 | 249 fnotice (stderr, "compilation terminated.\n"); |
| 250 exit (FATAL_EXIT_CODE); | |
| 251 | |
| 252 default: | |
| 253 gcc_unreachable (); | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 void | |
| 258 diagnostic_report_current_module (diagnostic_context *context) | |
| 259 { | |
| 260 const struct line_map *map; | |
| 261 | |
| 262 if (pp_needs_newline (context->printer)) | |
| 263 { | |
| 264 pp_newline (context->printer); | |
| 265 pp_needs_newline (context->printer) = false; | |
| 266 } | |
| 267 | |
| 268 if (input_location <= BUILTINS_LOCATION) | |
| 269 return; | |
| 270 | |
| 271 map = linemap_lookup (line_table, input_location); | |
| 272 if (map && diagnostic_last_module_changed (context, map)) | |
| 273 { | |
| 274 diagnostic_set_last_module (context, map); | |
| 275 if (! MAIN_FILE_P (map)) | |
| 276 { | |
| 277 map = INCLUDED_FROM (line_table, map); | |
|
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278 if (context->show_column) |
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279 pp_verbatim (context->printer, |
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280 "In file included from %s:%d:%d", |
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281 map->to_file, |
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282 LAST_SOURCE_LINE (map), LAST_SOURCE_COLUMN (map)); |
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283 else |
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284 pp_verbatim (context->printer, |
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285 "In file included from %s:%d", |
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286 map->to_file, LAST_SOURCE_LINE (map)); |
| 0 | 287 while (! MAIN_FILE_P (map)) |
| 288 { | |
| 289 map = INCLUDED_FROM (line_table, map); | |
| 290 pp_verbatim (context->printer, | |
| 291 ",\n from %s:%d", | |
| 292 map->to_file, LAST_SOURCE_LINE (map)); | |
| 293 } | |
| 294 pp_verbatim (context->printer, ":"); | |
| 295 pp_newline (context->printer); | |
| 296 } | |
| 297 } | |
| 298 } | |
| 299 | |
|
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300 void |
| 0 | 301 default_diagnostic_starter (diagnostic_context *context, |
| 302 diagnostic_info *diagnostic) | |
| 303 { | |
|
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304 diagnostic_report_current_module (context); |
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305 pp_set_prefix (context->printer, diagnostic_build_prefix (context, |
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306 diagnostic)); |
| 0 | 307 } |
| 308 | |
|
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309 void |
| 0 | 310 default_diagnostic_finalizer (diagnostic_context *context, |
| 311 diagnostic_info *diagnostic ATTRIBUTE_UNUSED) | |
| 312 { | |
| 313 pp_destroy_prefix (context->printer); | |
| 314 } | |
| 315 | |
| 316 /* Interface to specify diagnostic kind overrides. Returns the | |
| 317 previous setting, or DK_UNSPECIFIED if the parameters are out of | |
| 318 range. */ | |
| 319 diagnostic_t | |
| 320 diagnostic_classify_diagnostic (diagnostic_context *context, | |
| 321 int option_index, | |
|
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322 diagnostic_t new_kind, |
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323 location_t where) |
| 0 | 324 { |
| 325 diagnostic_t old_kind; | |
| 326 | |
| 327 if (option_index <= 0 | |
|
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328 || option_index >= context->n_opts |
| 0 | 329 || new_kind >= DK_LAST_DIAGNOSTIC_KIND) |
| 330 return DK_UNSPECIFIED; | |
| 331 | |
| 332 old_kind = context->classify_diagnostic[option_index]; | |
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333 |
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334 /* Handle pragmas separately, since we need to keep track of *where* |
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335 the pragmas were. */ |
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336 if (where != UNKNOWN_LOCATION) |
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337 { |
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338 int i; |
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339 |
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340 for (i = context->n_classification_history - 1; i >= 0; i --) |
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341 if (context->classification_history[i].option == option_index) |
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342 { |
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343 old_kind = context->classification_history[i].kind; |
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344 break; |
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345 } |
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346 |
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347 i = context->n_classification_history; |
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348 context->classification_history = |
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349 (diagnostic_classification_change_t *) xrealloc (context->classification_history, (i + 1) |
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350 * sizeof (diagnostic_classification_change_t)); |
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351 context->classification_history[i].location = where; |
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352 context->classification_history[i].option = option_index; |
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353 context->classification_history[i].kind = new_kind; |
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354 context->n_classification_history ++; |
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355 } |
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356 else |
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357 context->classify_diagnostic[option_index] = new_kind; |
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358 |
| 0 | 359 return old_kind; |
| 360 } | |
| 361 | |
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362 /* Save all diagnostic classifications in a stack. */ |
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363 void |
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364 diagnostic_push_diagnostics (diagnostic_context *context, location_t where ATTRIBUTE_UNUSED) |
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365 { |
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366 context->push_list = (int *) xrealloc (context->push_list, (context->n_push + 1) * sizeof (int)); |
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367 context->push_list[context->n_push ++] = context->n_classification_history; |
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368 } |
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369 |
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370 /* Restore the topmost classification set off the stack. If the stack |
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371 is empty, revert to the state based on command line parameters. */ |
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372 void |
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373 diagnostic_pop_diagnostics (diagnostic_context *context, location_t where) |
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374 { |
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375 int jump_to; |
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376 int i; |
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377 |
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378 if (context->n_push) |
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379 jump_to = context->push_list [-- context->n_push]; |
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380 else |
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381 jump_to = 0; |
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382 |
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383 i = context->n_classification_history; |
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384 context->classification_history = |
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385 (diagnostic_classification_change_t *) xrealloc (context->classification_history, (i + 1) |
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386 * sizeof (diagnostic_classification_change_t)); |
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387 context->classification_history[i].location = where; |
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388 context->classification_history[i].option = jump_to; |
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389 context->classification_history[i].kind = DK_POP; |
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390 context->n_classification_history ++; |
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391 } |
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392 |
| 0 | 393 /* Report a diagnostic message (an error or a warning) as specified by |
| 394 DC. This function is *the* subroutine in terms of which front-ends | |
| 395 should implement their specific diagnostic handling modules. The | |
| 396 front-end independent format specifiers are exactly those described | |
|
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397 in the documentation of output_format. |
| 0 | 398 Return true if a diagnostic was printed, false otherwise. */ |
| 399 | |
| 400 bool | |
| 401 diagnostic_report_diagnostic (diagnostic_context *context, | |
| 402 diagnostic_info *diagnostic) | |
| 403 { | |
| 404 location_t location = diagnostic->location; | |
|
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405 diagnostic_t orig_diag_kind = diagnostic->kind; |
| 0 | 406 const char *saved_format_spec; |
| 407 | |
| 408 /* Give preference to being able to inhibit warnings, before they | |
| 409 get reclassified to something else. */ | |
| 410 if ((diagnostic->kind == DK_WARNING || diagnostic->kind == DK_PEDWARN) | |
|
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411 && !diagnostic_report_warnings_p (context, location)) |
| 0 | 412 return false; |
| 413 | |
|
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414 if (diagnostic->kind == DK_PEDWARN) |
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415 { |
|
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416 diagnostic->kind = pedantic_warning_kind (context); |
|
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417 /* We do this to avoid giving the message for -pedantic-errors. */ |
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418 orig_diag_kind = diagnostic->kind; |
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419 } |
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420 |
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421 if (diagnostic->kind == DK_NOTE && context->inhibit_notes_p) |
|
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422 return false; |
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423 |
| 0 | 424 if (context->lock > 0) |
| 425 { | |
| 426 /* If we're reporting an ICE in the middle of some other error, | |
| 427 try to flush out the previous error, then let this one | |
| 428 through. Don't do this more than once. */ | |
| 429 if (diagnostic->kind == DK_ICE && context->lock == 1) | |
| 430 pp_flush (context->printer); | |
| 431 else | |
| 432 error_recursion (context); | |
| 433 } | |
| 434 | |
| 435 /* If the user requested that warnings be treated as errors, so be | |
| 436 it. Note that we do this before the next block so that | |
| 437 individual warnings can be overridden back to warnings with | |
| 438 -Wno-error=*. */ | |
| 439 if (context->warning_as_error_requested | |
| 440 && diagnostic->kind == DK_WARNING) | |
| 441 { | |
| 442 diagnostic->kind = DK_ERROR; | |
| 443 } | |
|
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444 |
| 0 | 445 if (diagnostic->option_index) |
| 446 { | |
|
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447 diagnostic_t diag_class = DK_UNSPECIFIED; |
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448 |
| 0 | 449 /* This tests if the user provided the appropriate -Wfoo or |
| 450 -Wno-foo option. */ | |
|
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451 if (! context->option_enabled (diagnostic->option_index, |
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452 context->option_state)) |
| 0 | 453 return false; |
|
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454 |
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455 /* This tests for #pragma diagnostic changes. */ |
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456 if (context->n_classification_history > 0) |
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457 { |
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458 int i; |
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459 /* FIXME: Stupid search. Optimize later. */ |
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460 for (i = context->n_classification_history - 1; i >= 0; i --) |
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461 { |
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462 if (context->classification_history[i].location <= location) |
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463 { |
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464 if (context->classification_history[i].kind == (int) DK_POP) |
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465 { |
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466 i = context->classification_history[i].option; |
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467 continue; |
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468 } |
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469 if (context->classification_history[i].option == diagnostic->option_index) |
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470 { |
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471 diag_class = context->classification_history[i].kind; |
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472 if (diag_class != DK_UNSPECIFIED) |
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473 diagnostic->kind = diag_class; |
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474 break; |
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475 } |
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476 } |
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477 } |
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478 } |
| 0 | 479 /* This tests if the user provided the appropriate -Werror=foo |
| 480 option. */ | |
|
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481 if (diag_class == DK_UNSPECIFIED |
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482 && context->classify_diagnostic[diagnostic->option_index] != DK_UNSPECIFIED) |
| 0 | 483 { |
| 484 diagnostic->kind = context->classify_diagnostic[diagnostic->option_index]; | |
| 485 } | |
| 486 /* This allows for future extensions, like temporarily disabling | |
| 487 warnings for ranges of source code. */ | |
| 488 if (diagnostic->kind == DK_IGNORED) | |
| 489 return false; | |
| 490 } | |
| 491 | |
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492 if (orig_diag_kind == DK_WARNING && diagnostic->kind == DK_ERROR) |
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493 context->some_warnings_are_errors = true; |
| 0 | 494 |
| 495 context->lock++; | |
| 496 | |
|
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497 if (diagnostic->kind == DK_ICE) |
| 0 | 498 { |
| 499 #ifndef ENABLE_CHECKING | |
| 500 /* When not checking, ICEs are converted to fatal errors when an | |
| 501 error has already occurred. This is counteracted by | |
| 502 abort_on_error. */ | |
| 503 if ((diagnostic_kind_count (context, DK_ERROR) > 0 | |
| 504 || diagnostic_kind_count (context, DK_SORRY) > 0) | |
| 505 && !context->abort_on_error) | |
| 506 { | |
| 507 expanded_location s = expand_location (diagnostic->location); | |
| 508 fnotice (stderr, "%s:%d: confused by earlier errors, bailing out\n", | |
| 509 s.file, s.line); | |
| 510 exit (ICE_EXIT_CODE); | |
| 511 } | |
| 512 #endif | |
| 513 if (context->internal_error) | |
|
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514 (*context->internal_error) (context, |
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515 diagnostic->message.format_spec, |
| 0 | 516 diagnostic->message.args_ptr); |
| 517 } | |
| 518 ++diagnostic_kind_count (context, diagnostic->kind); | |
|
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519 |
| 0 | 520 saved_format_spec = diagnostic->message.format_spec; |
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521 if (context->show_option_requested) |
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522 { |
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523 char *option_text; |
|
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524 |
|
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525 option_text = context->option_name (context, diagnostic->option_index, |
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526 orig_diag_kind, diagnostic->kind); |
|
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527 |
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528 if (option_text) |
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529 { |
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530 diagnostic->message.format_spec |
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531 = ACONCAT ((diagnostic->message.format_spec, |
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532 " ", |
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533 "[", option_text, "]", |
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534 NULL)); |
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535 free (option_text); |
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536 } |
|
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537 } |
| 0 | 538 diagnostic->message.locus = &diagnostic->location; |
|
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539 diagnostic->message.x_data = &diagnostic->x_data; |
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540 diagnostic->x_data = NULL; |
| 0 | 541 pp_format (context->printer, &diagnostic->message); |
| 542 (*diagnostic_starter (context)) (context, diagnostic); | |
| 543 pp_output_formatted_text (context->printer); | |
| 544 (*diagnostic_finalizer (context)) (context, diagnostic); | |
| 545 pp_flush (context->printer); | |
| 546 diagnostic_action_after_output (context, diagnostic); | |
| 547 diagnostic->message.format_spec = saved_format_spec; | |
|
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548 diagnostic->x_data = NULL; |
| 0 | 549 |
| 550 context->lock--; | |
| 551 | |
| 552 return true; | |
| 553 } | |
| 554 | |
| 555 /* Given a partial pathname as input, return another pathname that | |
| 556 shares no directory elements with the pathname of __FILE__. This | |
| 557 is used by fancy_abort() to print `Internal compiler error in expr.c' | |
| 558 instead of `Internal compiler error in ../../GCC/gcc/expr.c'. */ | |
| 559 | |
| 560 const char * | |
| 561 trim_filename (const char *name) | |
| 562 { | |
| 563 static const char this_file[] = __FILE__; | |
| 564 const char *p = name, *q = this_file; | |
| 565 | |
| 566 /* First skip any "../" in each filename. This allows us to give a proper | |
| 567 reference to a file in a subdirectory. */ | |
| 568 while (p[0] == '.' && p[1] == '.' && IS_DIR_SEPARATOR (p[2])) | |
| 569 p += 3; | |
| 570 | |
| 571 while (q[0] == '.' && q[1] == '.' && IS_DIR_SEPARATOR (q[2])) | |
| 572 q += 3; | |
| 573 | |
| 574 /* Now skip any parts the two filenames have in common. */ | |
| 575 while (*p == *q && *p != 0 && *q != 0) | |
| 576 p++, q++; | |
| 577 | |
| 578 /* Now go backwards until the previous directory separator. */ | |
| 579 while (p > name && !IS_DIR_SEPARATOR (p[-1])) | |
| 580 p--; | |
| 581 | |
| 582 return p; | |
| 583 } | |
| 584 | |
| 585 /* Standard error reporting routines in increasing order of severity. | |
| 586 All of these take arguments like printf. */ | |
| 587 | |
| 588 /* Text to be emitted verbatim to the error message stream; this | |
| 589 produces no prefix and disables line-wrapping. Use rarely. */ | |
| 590 void | |
| 591 verbatim (const char *gmsgid, ...) | |
| 592 { | |
| 593 text_info text; | |
| 594 va_list ap; | |
| 595 | |
| 596 va_start (ap, gmsgid); | |
| 597 text.err_no = errno; | |
| 598 text.args_ptr = ≈ | |
| 599 text.format_spec = _(gmsgid); | |
| 600 text.locus = NULL; | |
|
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601 text.x_data = NULL; |
| 0 | 602 pp_format_verbatim (global_dc->printer, &text); |
| 603 pp_flush (global_dc->printer); | |
| 604 va_end (ap); | |
| 605 } | |
| 606 | |
| 607 bool | |
|
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608 emit_diagnostic (diagnostic_t kind, location_t location, int opt, |
| 0 | 609 const char *gmsgid, ...) |
| 610 { | |
| 611 diagnostic_info diagnostic; | |
| 612 va_list ap; | |
| 613 | |
| 614 va_start (ap, gmsgid); | |
| 615 if (kind == DK_PERMERROR) | |
| 616 { | |
| 617 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, | |
|
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618 permissive_error_kind (global_dc)); |
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619 diagnostic.option_index = permissive_error_option (global_dc); |
| 0 | 620 } |
| 621 else { | |
| 622 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, kind); | |
| 623 if (kind == DK_WARNING || kind == DK_PEDWARN) | |
| 624 diagnostic.option_index = opt; | |
| 625 } | |
| 626 va_end (ap); | |
| 627 | |
| 628 return report_diagnostic (&diagnostic); | |
| 629 } | |
| 630 | |
| 631 /* An informative note at LOCATION. Use this for additional details on an error | |
| 632 message. */ | |
| 633 void | |
| 634 inform (location_t location, const char *gmsgid, ...) | |
| 635 { | |
| 636 diagnostic_info diagnostic; | |
| 637 va_list ap; | |
| 638 | |
| 639 va_start (ap, gmsgid); | |
| 640 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, DK_NOTE); | |
| 641 report_diagnostic (&diagnostic); | |
| 642 va_end (ap); | |
| 643 } | |
| 644 | |
|
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645 /* An informative note at LOCATION. Use this for additional details on an |
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646 error message. */ |
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647 void |
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648 inform_n (location_t location, int n, const char *singular_gmsgid, |
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649 const char *plural_gmsgid, ...) |
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650 { |
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651 diagnostic_info diagnostic; |
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652 va_list ap; |
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653 |
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654 va_start (ap, plural_gmsgid); |
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655 diagnostic_set_info_translated (&diagnostic, |
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656 ngettext (singular_gmsgid, plural_gmsgid, n), |
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657 &ap, location, DK_NOTE); |
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658 report_diagnostic (&diagnostic); |
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659 va_end (ap); |
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660 } |
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661 |
| 0 | 662 /* A warning at INPUT_LOCATION. Use this for code which is correct according |
|
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663 to the relevant language specification but is likely to be buggy anyway. |
| 0 | 664 Returns true if the warning was printed, false if it was inhibited. */ |
| 665 bool | |
| 666 warning (int opt, const char *gmsgid, ...) | |
| 667 { | |
| 668 diagnostic_info diagnostic; | |
| 669 va_list ap; | |
| 670 | |
| 671 va_start (ap, gmsgid); | |
| 672 diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_WARNING); | |
| 673 diagnostic.option_index = opt; | |
| 674 | |
| 675 va_end (ap); | |
| 676 return report_diagnostic (&diagnostic); | |
| 677 } | |
| 678 | |
| 679 /* A warning at LOCATION. Use this for code which is correct according to the | |
| 680 relevant language specification but is likely to be buggy anyway. | |
| 681 Returns true if the warning was printed, false if it was inhibited. */ | |
| 682 | |
| 683 bool | |
| 684 warning_at (location_t location, int opt, const char *gmsgid, ...) | |
| 685 { | |
| 686 diagnostic_info diagnostic; | |
| 687 va_list ap; | |
| 688 | |
| 689 va_start (ap, gmsgid); | |
| 690 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, DK_WARNING); | |
| 691 diagnostic.option_index = opt; | |
| 692 va_end (ap); | |
| 693 return report_diagnostic (&diagnostic); | |
| 694 } | |
| 695 | |
| 696 /* A "pedantic" warning at LOCATION: issues a warning unless | |
| 697 -pedantic-errors was given on the command line, in which case it | |
| 698 issues an error. Use this for diagnostics required by the relevant | |
| 699 language standard, if you have chosen not to make them errors. | |
| 700 | |
| 701 Note that these diagnostics are issued independent of the setting | |
| 702 of the -pedantic command-line switch. To get a warning enabled | |
| 703 only with that switch, use either "if (pedantic) pedwarn | |
| 704 (OPT_pedantic,...)" or just "pedwarn (OPT_pedantic,..)". To get a | |
| 705 pedwarn independently of the -pedantic switch use "pedwarn (0,...)". | |
| 706 | |
| 707 Returns true if the warning was printed, false if it was inhibited. */ | |
| 708 | |
| 709 bool | |
| 710 pedwarn (location_t location, int opt, const char *gmsgid, ...) | |
| 711 { | |
| 712 diagnostic_info diagnostic; | |
| 713 va_list ap; | |
| 714 | |
| 715 va_start (ap, gmsgid); | |
| 716 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, DK_PEDWARN); | |
| 717 diagnostic.option_index = opt; | |
| 718 va_end (ap); | |
| 719 return report_diagnostic (&diagnostic); | |
| 720 } | |
| 721 | |
| 722 /* A "permissive" error at LOCATION: issues an error unless | |
| 723 -fpermissive was given on the command line, in which case it issues | |
| 724 a warning. Use this for things that really should be errors but we | |
| 725 want to support legacy code. | |
| 726 | |
| 727 Returns true if the warning was printed, false if it was inhibited. */ | |
| 728 | |
| 729 bool | |
| 730 permerror (location_t location, const char *gmsgid, ...) | |
| 731 { | |
| 732 diagnostic_info diagnostic; | |
| 733 va_list ap; | |
| 734 | |
| 735 va_start (ap, gmsgid); | |
| 736 diagnostic_set_info (&diagnostic, gmsgid, &ap, location, | |
|
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737 permissive_error_kind (global_dc)); |
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738 diagnostic.option_index = permissive_error_option (global_dc); |
| 0 | 739 va_end (ap); |
| 740 return report_diagnostic (&diagnostic); | |
| 741 } | |
| 742 | |
| 743 /* A hard error: the code is definitely ill-formed, and an object file | |
| 744 will not be produced. */ | |
| 745 void | |
| 746 error (const char *gmsgid, ...) | |
| 747 { | |
| 748 diagnostic_info diagnostic; | |
| 749 va_list ap; | |
| 750 | |
| 751 va_start (ap, gmsgid); | |
| 752 diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_ERROR); | |
| 753 report_diagnostic (&diagnostic); | |
| 754 va_end (ap); | |
| 755 } | |
| 756 | |
|
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757 /* A hard error: the code is definitely ill-formed, and an object file |
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758 will not be produced. */ |
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759 void |
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760 error_n (location_t location, int n, const char *singular_gmsgid, |
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761 const char *plural_gmsgid, ...) |
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762 { |
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763 diagnostic_info diagnostic; |
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764 va_list ap; |
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765 |
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766 va_start (ap, plural_gmsgid); |
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767 diagnostic_set_info_translated (&diagnostic, |
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768 ngettext (singular_gmsgid, plural_gmsgid, n), |
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769 &ap, location, DK_ERROR); |
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770 report_diagnostic (&diagnostic); |
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771 va_end (ap); |
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772 } |
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773 |
| 0 | 774 /* Same as ebove, but use location LOC instead of input_location. */ |
| 775 void | |
| 776 error_at (location_t loc, const char *gmsgid, ...) | |
| 777 { | |
| 778 diagnostic_info diagnostic; | |
| 779 va_list ap; | |
| 780 | |
| 781 va_start (ap, gmsgid); | |
| 782 diagnostic_set_info (&diagnostic, gmsgid, &ap, loc, DK_ERROR); | |
| 783 report_diagnostic (&diagnostic); | |
| 784 va_end (ap); | |
| 785 } | |
| 786 | |
| 787 /* "Sorry, not implemented." Use for a language feature which is | |
| 788 required by the relevant specification but not implemented by GCC. | |
| 789 An object file will not be produced. */ | |
| 790 void | |
| 791 sorry (const char *gmsgid, ...) | |
| 792 { | |
| 793 diagnostic_info diagnostic; | |
| 794 va_list ap; | |
| 795 | |
| 796 va_start (ap, gmsgid); | |
| 797 diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_SORRY); | |
| 798 report_diagnostic (&diagnostic); | |
| 799 va_end (ap); | |
| 800 } | |
| 801 | |
|
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802 /* Return true if an error or a "sorry" has been seen. Various |
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803 processing is disabled after errors. */ |
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804 bool |
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805 seen_error (void) |
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806 { |
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807 return errorcount || sorrycount; |
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808 } |
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809 |
| 0 | 810 /* An error which is severe enough that we make no attempt to |
| 811 continue. Do not use this for internal consistency checks; that's | |
| 812 internal_error. Use of this function should be rare. */ | |
| 813 void | |
| 814 fatal_error (const char *gmsgid, ...) | |
| 815 { | |
| 816 diagnostic_info diagnostic; | |
| 817 va_list ap; | |
| 818 | |
| 819 va_start (ap, gmsgid); | |
| 820 diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_FATAL); | |
| 821 report_diagnostic (&diagnostic); | |
| 822 va_end (ap); | |
| 823 | |
| 824 gcc_unreachable (); | |
| 825 } | |
| 826 | |
| 827 /* An internal consistency check has failed. We make no attempt to | |
| 828 continue. Note that unless there is debugging value to be had from | |
| 829 a more specific message, or some other good reason, you should use | |
| 830 abort () instead of calling this function directly. */ | |
| 831 void | |
| 832 internal_error (const char *gmsgid, ...) | |
| 833 { | |
| 834 diagnostic_info diagnostic; | |
| 835 va_list ap; | |
| 836 | |
| 837 va_start (ap, gmsgid); | |
| 838 diagnostic_set_info (&diagnostic, gmsgid, &ap, input_location, DK_ICE); | |
| 839 report_diagnostic (&diagnostic); | |
| 840 va_end (ap); | |
| 841 | |
| 842 gcc_unreachable (); | |
| 843 } | |
| 844 | |
| 845 /* Special case error functions. Most are implemented in terms of the | |
| 846 above, or should be. */ | |
| 847 | |
| 848 /* Print a diagnostic MSGID on FILE. This is just fprintf, except it | |
| 849 runs its second argument through gettext. */ | |
| 850 void | |
| 851 fnotice (FILE *file, const char *cmsgid, ...) | |
| 852 { | |
| 853 va_list ap; | |
| 854 | |
| 855 va_start (ap, cmsgid); | |
| 856 vfprintf (file, _(cmsgid), ap); | |
| 857 va_end (ap); | |
| 858 } | |
| 859 | |
| 860 /* Inform the user that an error occurred while trying to report some | |
| 861 other error. This indicates catastrophic internal inconsistencies, | |
| 862 so give up now. But do try to flush out the previous error. | |
| 863 This mustn't use internal_error, that will cause infinite recursion. */ | |
| 864 | |
| 865 static void | |
| 866 error_recursion (diagnostic_context *context) | |
| 867 { | |
| 868 diagnostic_info diagnostic; | |
| 869 | |
| 870 if (context->lock < 3) | |
| 871 pp_flush (context->printer); | |
| 872 | |
| 873 fnotice (stderr, | |
| 874 "Internal compiler error: Error reporting routines re-entered.\n"); | |
| 875 | |
| 876 /* Call diagnostic_action_after_output to get the "please submit a bug | |
| 877 report" message. It only looks at the kind field of diagnostic_info. */ | |
| 878 diagnostic.kind = DK_ICE; | |
| 879 diagnostic_action_after_output (context, &diagnostic); | |
| 880 | |
| 881 /* Do not use gcc_unreachable here; that goes through internal_error | |
| 882 and therefore would cause infinite recursion. */ | |
| 883 real_abort (); | |
| 884 } | |
| 885 | |
| 886 /* Report an internal compiler error in a friendly manner. This is | |
| 887 the function that gets called upon use of abort() in the source | |
| 888 code generally, thanks to a special macro. */ | |
| 889 | |
| 890 void | |
| 891 fancy_abort (const char *file, int line, const char *function) | |
| 892 { | |
| 893 internal_error ("in %s, at %s:%d", function, trim_filename (file), line); | |
| 894 } | |
| 895 | |
| 896 /* Really call the system 'abort'. This has to go right at the end of | |
| 897 this file, so that there are no functions after it that call abort | |
| 898 and get the system abort instead of our macro. */ | |
| 899 #undef abort | |
| 900 static void | |
| 901 real_abort (void) | |
| 902 { | |
| 903 abort (); | |
| 904 } |