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[binutils-gdb.git] / gold / errors.cc
blob663fe614d61239e8bce5241475824a14219841ea
1 // errors.cc -- handle errors for gold
3 // Copyright (C) 2006-2022 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 3 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 // MA 02110-1301, USA.
23 #include "gold.h"
25 #include <cstdarg>
26 #include <cstdio>
28 #include "gold-threads.h"
29 #include "parameters.h"
30 #include "object.h"
31 #include "symtab.h"
32 #include "errors.h"
34 namespace gold
37 // Class Errors.
39 const int Errors::max_undefined_error_report;
41 Errors::Errors(const char* program_name)
42 : program_name_(program_name), lock_(NULL), initialize_lock_(&this->lock_),
43 error_count_(0), warning_count_(0), undefined_symbols_()
47 // Initialize the lock_ field. If we have not yet processed the
48 // parameters, then we can't initialize, since we don't yet know
49 // whether we are using threads. That is OK, since if we haven't
50 // processed the parameters, we haven't created any threads, and we
51 // don't need a lock. Return true if the lock is now initialized.
53 bool
54 Errors::initialize_lock()
56 return this->initialize_lock_.initialize();
59 // Increment a counter, holding the lock if available.
61 void
62 Errors::increment_counter(int *counter)
64 if (!this->initialize_lock())
66 // The lock does not exist, which means that we don't need it.
67 ++*counter;
69 else
71 Hold_lock h(*this->lock_);
72 ++*counter;
76 // Report a fatal error.
78 void
79 Errors::fatal(const char* format, va_list args)
81 fprintf(stderr, _("%s: fatal error: "), this->program_name_);
82 vfprintf(stderr, format, args);
83 fputc('\n', stderr);
84 gold_exit(GOLD_ERR);
87 // Report a fallback error.
89 void
90 Errors::fallback(const char* format, va_list args)
92 fprintf(stderr, _("%s: fatal error: "), this->program_name_);
93 vfprintf(stderr, format, args);
94 fputc('\n', stderr);
95 gold_exit(GOLD_FALLBACK);
98 // Report an error.
100 void
101 Errors::error(const char* format, va_list args)
103 fprintf(stderr, _("%s: error: "), this->program_name_);
104 vfprintf(stderr, format, args);
105 fputc('\n', stderr);
107 this->increment_counter(&this->error_count_);
110 // Report a warning.
112 void
113 Errors::warning(const char* format, va_list args)
115 fprintf(stderr, _("%s: warning: "), this->program_name_);
116 vfprintf(stderr, format, args);
117 fputc('\n', stderr);
119 this->increment_counter(&this->warning_count_);
122 // Print an informational message.
124 void
125 Errors::info(const char* format, va_list args)
127 vfprintf(stderr, format, args);
128 fputc('\n', stderr);
131 // Print a trace message.
133 void
134 Errors::trace(const char* format, va_list args)
136 vfprintf(stdout, format, args);
137 fputc('\n', stdout);
140 // Report an error at a reloc location.
142 template<int size, bool big_endian>
143 void
144 Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
145 size_t relnum, off_t reloffset,
146 const char* format, va_list args)
148 fprintf(stderr, _("%s: error: "),
149 relinfo->location(relnum, reloffset).c_str());
150 vfprintf(stderr, format, args);
151 fputc('\n', stderr);
153 this->increment_counter(&this->error_count_);
156 // Report a warning at a reloc location.
158 template<int size, bool big_endian>
159 void
160 Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
161 size_t relnum, off_t reloffset,
162 const char* format, va_list args)
164 fprintf(stderr, _("%s: warning: "),
165 relinfo->location(relnum, reloffset).c_str());
166 vfprintf(stderr, format, args);
167 fputc('\n', stderr);
169 this->increment_counter(&this->warning_count_);
172 // Issue an undefined symbol error with a caller-supplied location string.
174 void
175 Errors::undefined_symbol(const Symbol* sym, const std::string& location)
177 bool initialized = this->initialize_lock();
178 gold_assert(initialized);
180 const char* zmsg;
182 Hold_lock h(*this->lock_);
183 if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
184 return;
185 if (parameters->options().warn_unresolved_symbols())
187 ++this->warning_count_;
188 zmsg = _("warning");
190 else
192 ++this->error_count_;
193 zmsg = _("error");
197 const char* const version = sym->version();
198 if (version == NULL)
199 fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
200 location.c_str(), zmsg, sym->demangled_name().c_str());
201 else
202 fprintf(stderr,
203 _("%s: %s: undefined reference to '%s', version '%s'\n"),
204 location.c_str(), zmsg, sym->demangled_name().c_str(), version);
206 if (sym->is_cxx_vtable())
207 gold_info(_("%s: the vtable symbol may be undefined because "
208 "the class is missing its key function"),
209 program_name);
210 if (sym->is_placeholder())
211 gold_info(_("%s: the symbol should have been defined by a plugin"),
212 program_name);
215 // Issue a debugging message.
217 void
218 Errors::debug(const char* format, ...)
220 fprintf(stderr, _("%s: "), this->program_name_);
222 va_list args;
223 va_start(args, format);
224 vfprintf(stderr, format, args);
225 va_end(args);
227 fputc('\n', stderr);
230 // The functions which the rest of the code actually calls.
232 // Report a fatal error.
234 void
235 gold_fatal(const char* format, ...)
237 va_list args;
238 va_start(args, format);
239 parameters->errors()->fatal(format, args);
240 va_end(args);
243 // Report a fallback error.
245 void
246 gold_fallback(const char* format, ...)
248 va_list args;
249 va_start(args, format);
250 parameters->errors()->fallback(format, args);
251 va_end(args);
254 // Report an error.
256 void
257 gold_error(const char* format, ...)
259 va_list args;
260 va_start(args, format);
261 parameters->errors()->error(format, args);
262 va_end(args);
265 // Report a warning.
267 void
268 gold_warning(const char* format, ...)
270 va_list args;
271 va_start(args, format);
272 parameters->errors()->warning(format, args);
273 va_end(args);
276 // Print an informational message.
278 void
279 gold_info(const char* format, ...)
281 va_list args;
282 va_start(args, format);
283 parameters->errors()->info(format, args);
284 va_end(args);
287 // Print a trace message (to stdout).
289 void
290 gold_trace(const char* format, ...)
292 va_list args;
293 va_start(args, format);
294 parameters->errors()->trace(format, args);
295 va_end(args);
298 // Report an error at a location.
300 template<int size, bool big_endian>
301 void
302 gold_error_at_location(const Relocate_info<size, big_endian>* relinfo,
303 size_t relnum, off_t reloffset,
304 const char* format, ...)
306 va_list args;
307 va_start(args, format);
308 parameters->errors()->error_at_location(relinfo, relnum, reloffset,
309 format, args);
310 va_end(args);
313 // Report a warning at a location.
315 template<int size, bool big_endian>
316 void
317 gold_warning_at_location(const Relocate_info<size, big_endian>* relinfo,
318 size_t relnum, off_t reloffset,
319 const char* format, ...)
321 va_list args;
322 va_start(args, format);
323 parameters->errors()->warning_at_location(relinfo, relnum, reloffset,
324 format, args);
325 va_end(args);
328 // Report an undefined symbol.
330 void
331 gold_undefined_symbol(const Symbol* sym)
333 parameters->errors()->undefined_symbol(sym, sym->object()->name().c_str());
336 // Report an undefined symbol at a reloc location
338 template<int size, bool big_endian>
339 void
340 gold_undefined_symbol_at_location(const Symbol* sym,
341 const Relocate_info<size, big_endian>* relinfo,
342 size_t relnum, off_t reloffset)
344 parameters->errors()->undefined_symbol(sym,
345 relinfo->location(relnum, reloffset));
348 #ifdef HAVE_TARGET_32_LITTLE
349 template
350 void
351 gold_error_at_location<32, false>(const Relocate_info<32, false>* relinfo,
352 size_t relnum, off_t reloffset,
353 const char* format, ...);
354 #endif
356 #ifdef HAVE_TARGET_32_BIG
357 template
358 void
359 gold_error_at_location<32, true>(const Relocate_info<32, true>* relinfo,
360 size_t relnum, off_t reloffset,
361 const char* format, ...);
362 #endif
364 #ifdef HAVE_TARGET_64_LITTLE
365 template
366 void
367 gold_error_at_location<64, false>(const Relocate_info<64, false>* relinfo,
368 size_t relnum, off_t reloffset,
369 const char* format, ...);
370 #endif
372 #ifdef HAVE_TARGET_64_BIG
373 template
374 void
375 gold_error_at_location<64, true>(const Relocate_info<64, true>* relinfo,
376 size_t relnum, off_t reloffset,
377 const char* format, ...);
378 #endif
380 #ifdef HAVE_TARGET_32_LITTLE
381 template
382 void
383 gold_warning_at_location<32, false>(const Relocate_info<32, false>* relinfo,
384 size_t relnum, off_t reloffset,
385 const char* format, ...);
386 #endif
388 #ifdef HAVE_TARGET_32_BIG
389 template
390 void
391 gold_warning_at_location<32, true>(const Relocate_info<32, true>* relinfo,
392 size_t relnum, off_t reloffset,
393 const char* format, ...);
394 #endif
396 #ifdef HAVE_TARGET_64_LITTLE
397 template
398 void
399 gold_warning_at_location<64, false>(const Relocate_info<64, false>* relinfo,
400 size_t relnum, off_t reloffset,
401 const char* format, ...);
402 #endif
404 #ifdef HAVE_TARGET_64_BIG
405 template
406 void
407 gold_warning_at_location<64, true>(const Relocate_info<64, true>* relinfo,
408 size_t relnum, off_t reloffset,
409 const char* format, ...);
410 #endif
412 #ifdef HAVE_TARGET_32_LITTLE
413 template
414 void
415 gold_undefined_symbol_at_location<32, false>(
416 const Symbol* sym,
417 const Relocate_info<32, false>* relinfo,
418 size_t relnum, off_t reloffset);
419 #endif
421 #ifdef HAVE_TARGET_32_BIG
422 template
423 void
424 gold_undefined_symbol_at_location<32, true>(
425 const Symbol* sym,
426 const Relocate_info<32, true>* relinfo,
427 size_t relnum, off_t reloffset);
428 #endif
430 #ifdef HAVE_TARGET_64_LITTLE
431 template
432 void
433 gold_undefined_symbol_at_location<64, false>(
434 const Symbol* sym,
435 const Relocate_info<64, false>* relinfo,
436 size_t relnum, off_t reloffset);
437 #endif
439 #ifdef HAVE_TARGET_64_BIG
440 template
441 void
442 gold_undefined_symbol_at_location<64, true>(
443 const Symbol* sym,
444 const Relocate_info<64, true>* relinfo,
445 size_t relnum, off_t reloffset);
446 #endif
448 } // End namespace gold.