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b667dd70 | 1 | //===-- sanitizer_symbolizer_posix_libcdep.cpp ----------------------------===// |
f35db108 | 2 | // |
b667dd70 ML |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. | |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
f35db108 WM |
6 | // |
7 | //===----------------------------------------------------------------------===// | |
8 | // | |
9 | // This file is shared between AddressSanitizer and ThreadSanitizer | |
ef1b3fda KS |
10 | // run-time libraries. |
11 | // POSIX-specific implementation of symbolizer parts. | |
f35db108 WM |
12 | //===----------------------------------------------------------------------===// |
13 | ||
ef1b3fda KS |
14 | #include "sanitizer_platform.h" |
15 | #if SANITIZER_POSIX | |
16 | #include "sanitizer_allocator_internal.h" | |
f35db108 | 17 | #include "sanitizer_common.h" |
5d3805fc | 18 | #include "sanitizer_file.h" |
dee5ea7a | 19 | #include "sanitizer_flags.h" |
ef1b3fda KS |
20 | #include "sanitizer_internal_defs.h" |
21 | #include "sanitizer_linux.h" | |
f35db108 | 22 | #include "sanitizer_placement_new.h" |
696d846a | 23 | #include "sanitizer_posix.h" |
f35db108 | 24 | #include "sanitizer_procmaps.h" |
696d846a | 25 | #include "sanitizer_symbolizer_internal.h" |
df77f0e4 | 26 | #include "sanitizer_symbolizer_libbacktrace.h" |
696d846a | 27 | #include "sanitizer_symbolizer_mac.h" |
f35db108 | 28 | |
10189819 | 29 | #include <dlfcn.h> // for dlsym() |
ef1b3fda | 30 | #include <errno.h> |
10189819 | 31 | #include <stdint.h> |
ef1b3fda KS |
32 | #include <stdlib.h> |
33 | #include <sys/wait.h> | |
34 | #include <unistd.h> | |
35 | ||
36 | // C++ demangling function, as required by Itanium C++ ABI. This is weak, | |
37 | // because we do not require a C++ ABI library to be linked to a program | |
38 | // using sanitizers; if it's not present, we'll just use the mangled name. | |
39 | namespace __cxxabiv1 { | |
40 | extern "C" SANITIZER_WEAK_ATTRIBUTE | |
41 | char *__cxa_demangle(const char *mangled, char *buffer, | |
42 | size_t *length, int *status); | |
43 | } | |
44 | ||
f35db108 WM |
45 | namespace __sanitizer { |
46 | ||
ef1b3fda | 47 | // Attempts to demangle the name via __cxa_demangle from __cxxabiv1. |
696d846a | 48 | const char *DemangleCXXABI(const char *name) { |
ef1b3fda KS |
49 | // FIXME: __cxa_demangle aggressively insists on allocating memory. |
50 | // There's not much we can do about that, short of providing our | |
51 | // own demangler (libc++abi's implementation could be adapted so that | |
52 | // it does not allocate). For now, we just call it anyway, and we leak | |
53 | // the returned value. | |
5d3805fc | 54 | if (&__cxxabiv1::__cxa_demangle) |
ef1b3fda KS |
55 | if (const char *demangled_name = |
56 | __cxxabiv1::__cxa_demangle(name, 0, 0, 0)) | |
57 | return demangled_name; | |
58 | ||
59 | return name; | |
f35db108 WM |
60 | } |
61 | ||
10189819 MO |
62 | // As of now, there are no headers for the Swift runtime. Once they are |
63 | // present, we will weakly link since we do not require Swift runtime to be | |
64 | // linked. | |
65 | typedef char *(*swift_demangle_ft)(const char *mangledName, | |
66 | size_t mangledNameLength, char *outputBuffer, | |
67 | size_t *outputBufferSize, uint32_t flags); | |
68 | static swift_demangle_ft swift_demangle_f; | |
69 | ||
70 | // This must not happen lazily at symbolication time, because dlsym uses | |
71 | // malloc and thread-local storage, which is not a good thing to do during | |
72 | // symbolication. | |
73 | static void InitializeSwiftDemangler() { | |
74 | swift_demangle_f = (swift_demangle_ft)dlsym(RTLD_DEFAULT, "swift_demangle"); | |
eac97531 | 75 | (void)dlerror(); // Cleanup error message in case of failure |
10189819 MO |
76 | } |
77 | ||
78 | // Attempts to demangle a Swift name. The demangler will return nullptr if a | |
79 | // non-Swift name is passed in. | |
80 | const char *DemangleSwift(const char *name) { | |
81 | if (!name) return nullptr; | |
82 | ||
83 | // Check if we are dealing with a Swift mangled name first. | |
84 | if (name[0] != '_' || name[1] != 'T') { | |
85 | return nullptr; | |
86 | } | |
87 | ||
88 | if (swift_demangle_f) | |
89 | return swift_demangle_f(name, internal_strlen(name), 0, 0, 0); | |
90 | ||
91 | return nullptr; | |
92 | } | |
93 | ||
94 | const char *DemangleSwiftAndCXX(const char *name) { | |
95 | if (!name) return nullptr; | |
96 | if (const char *swift_demangled_name = DemangleSwift(name)) | |
97 | return swift_demangled_name; | |
98 | return DemangleCXXABI(name); | |
99 | } | |
100 | ||
5d3805fc JJ |
101 | static bool CreateTwoHighNumberedPipes(int *infd_, int *outfd_) { |
102 | int *infd = NULL; | |
103 | int *outfd = NULL; | |
104 | // The client program may close its stdin and/or stdout and/or stderr | |
105 | // thus allowing socketpair to reuse file descriptors 0, 1 or 2. | |
106 | // In this case the communication between the forked processes may be | |
107 | // broken if either the parent or the child tries to close or duplicate | |
108 | // these descriptors. The loop below produces two pairs of file | |
109 | // descriptors, each greater than 2 (stderr). | |
110 | int sock_pair[5][2]; | |
111 | for (int i = 0; i < 5; i++) { | |
112 | if (pipe(sock_pair[i]) == -1) { | |
113 | for (int j = 0; j < i; j++) { | |
114 | internal_close(sock_pair[j][0]); | |
115 | internal_close(sock_pair[j][1]); | |
116 | } | |
117 | return false; | |
118 | } else if (sock_pair[i][0] > 2 && sock_pair[i][1] > 2) { | |
119 | if (infd == NULL) { | |
120 | infd = sock_pair[i]; | |
121 | } else { | |
122 | outfd = sock_pair[i]; | |
123 | for (int j = 0; j < i; j++) { | |
124 | if (sock_pair[j] == infd) continue; | |
125 | internal_close(sock_pair[j][0]); | |
126 | internal_close(sock_pair[j][1]); | |
127 | } | |
128 | break; | |
129 | } | |
130 | } | |
131 | } | |
132 | CHECK(infd); | |
133 | CHECK(outfd); | |
134 | infd_[0] = infd[0]; | |
135 | infd_[1] = infd[1]; | |
136 | outfd_[0] = outfd[0]; | |
137 | outfd_[1] = outfd[1]; | |
138 | return true; | |
139 | } | |
140 | ||
696d846a MO |
141 | bool SymbolizerProcess::StartSymbolizerSubprocess() { |
142 | if (!FileExists(path_)) { | |
143 | if (!reported_invalid_path_) { | |
144 | Report("WARNING: invalid path to external symbolizer!\n"); | |
145 | reported_invalid_path_ = true; | |
f35db108 | 146 | } |
696d846a | 147 | return false; |
f35db108 WM |
148 | } |
149 | ||
3ca75cd5 ML |
150 | const char *argv[kArgVMax]; |
151 | GetArgV(path_, argv); | |
152 | pid_t pid; | |
5d3805fc | 153 | |
3c6331c2 ML |
154 | // Report how symbolizer is being launched for debugging purposes. |
155 | if (Verbosity() >= 3) { | |
156 | // Only use `Report` for first line so subsequent prints don't get prefixed | |
157 | // with current PID. | |
158 | Report("Launching Symbolizer process: "); | |
159 | for (unsigned index = 0; index < kArgVMax && argv[index]; ++index) | |
160 | Printf("%s ", argv[index]); | |
161 | Printf("\n"); | |
162 | } | |
163 | ||
3ca75cd5 | 164 | if (use_posix_spawn_) { |
696d846a | 165 | #if SANITIZER_MAC |
3c6331c2 | 166 | fd_t fd = internal_spawn(argv, const_cast<const char **>(GetEnvP()), &pid); |
3ca75cd5 ML |
167 | if (fd == kInvalidFd) { |
168 | Report("WARNING: failed to spawn external symbolizer (errno: %d)\n", | |
696d846a | 169 | errno); |
dee5ea7a KS |
170 | return false; |
171 | } | |
172 | ||
5d3805fc | 173 | input_fd_ = fd; |
3ca75cd5 | 174 | output_fd_ = fd; |
696d846a MO |
175 | #else // SANITIZER_MAC |
176 | UNIMPLEMENTED(); | |
177 | #endif // SANITIZER_MAC | |
178 | } else { | |
3ca75cd5 ML |
179 | fd_t infd[2] = {}, outfd[2] = {}; |
180 | if (!CreateTwoHighNumberedPipes(infd, outfd)) { | |
181 | Report("WARNING: Can't create a socket pair to start " | |
182 | "external symbolizer (errno: %d)\n", errno); | |
183 | return false; | |
184 | } | |
185 | ||
3c6331c2 | 186 | pid = StartSubprocess(path_, argv, GetEnvP(), /* stdin */ outfd[0], |
10189819 MO |
187 | /* stdout */ infd[1]); |
188 | if (pid < 0) { | |
dee5ea7a | 189 | internal_close(infd[0]); |
dee5ea7a | 190 | internal_close(outfd[1]); |
dee5ea7a | 191 | return false; |
dee5ea7a KS |
192 | } |
193 | ||
dee5ea7a KS |
194 | input_fd_ = infd[0]; |
195 | output_fd_ = outfd[1]; | |
dee5ea7a KS |
196 | } |
197 | ||
5d3805fc JJ |
198 | CHECK_GT(pid, 0); |
199 | ||
696d846a | 200 | // Check that symbolizer subprocess started successfully. |
696d846a | 201 | SleepForMillis(kSymbolizerStartupTimeMillis); |
10189819 | 202 | if (!IsProcessRunning(pid)) { |
696d846a MO |
203 | // Either waitpid failed, or child has already exited. |
204 | Report("WARNING: external symbolizer didn't start up correctly!\n"); | |
205 | return false; | |
dee5ea7a KS |
206 | } |
207 | ||
696d846a MO |
208 | return true; |
209 | } | |
dee5ea7a KS |
210 | |
211 | class Addr2LineProcess : public SymbolizerProcess { | |
212 | public: | |
213 | Addr2LineProcess(const char *path, const char *module_name) | |
214 | : SymbolizerProcess(path), module_name_(internal_strdup(module_name)) {} | |
215 | ||
216 | const char *module_name() const { return module_name_; } | |
217 | ||
218 | private: | |
696d846a MO |
219 | void GetArgV(const char *path_to_binary, |
220 | const char *(&argv)[kArgVMax]) const override { | |
221 | int i = 0; | |
222 | argv[i++] = path_to_binary; | |
223 | argv[i++] = "-iCfe"; | |
224 | argv[i++] = module_name_; | |
225 | argv[i++] = nullptr; | |
dee5ea7a KS |
226 | } |
227 | ||
696d846a | 228 | bool ReachedEndOfOutput(const char *buffer, uptr length) const override; |
dee5ea7a | 229 | |
696d846a MO |
230 | bool ReadFromSymbolizer(char *buffer, uptr max_length) override { |
231 | if (!SymbolizerProcess::ReadFromSymbolizer(buffer, max_length)) | |
232 | return false; | |
5d3805fc JJ |
233 | // The returned buffer is empty when output is valid, but exceeds |
234 | // max_length. | |
235 | if (*buffer == '\0') | |
236 | return true; | |
696d846a MO |
237 | // We should cut out output_terminator_ at the end of given buffer, |
238 | // appended by addr2line to mark the end of its meaningful output. | |
239 | // We cannot scan buffer from it's beginning, because it is legal for it | |
240 | // to start with output_terminator_ in case given offset is invalid. So, | |
241 | // scanning from second character. | |
242 | char *garbage = internal_strstr(buffer + 1, output_terminator_); | |
243 | // This should never be NULL since buffer must end up with | |
244 | // output_terminator_. | |
245 | CHECK(garbage); | |
246 | // Trim the buffer. | |
247 | garbage[0] = '\0'; | |
248 | return true; | |
dee5ea7a KS |
249 | } |
250 | ||
251 | const char *module_name_; // Owned, leaked. | |
696d846a | 252 | static const char output_terminator_[]; |
dee5ea7a KS |
253 | }; |
254 | ||
696d846a MO |
255 | const char Addr2LineProcess::output_terminator_[] = "??\n??:0\n"; |
256 | ||
257 | bool Addr2LineProcess::ReachedEndOfOutput(const char *buffer, | |
258 | uptr length) const { | |
259 | const size_t kTerminatorLen = sizeof(output_terminator_) - 1; | |
260 | // Skip, if we read just kTerminatorLen bytes, because Addr2Line output | |
261 | // should consist at least of two pairs of lines: | |
262 | // 1. First one, corresponding to given offset to be symbolized | |
263 | // (may be equal to output_terminator_, if offset is not valid). | |
264 | // 2. Second one for output_terminator_, itself to mark the end of output. | |
265 | if (length <= kTerminatorLen) return false; | |
266 | // Addr2Line output should end up with output_terminator_. | |
267 | return !internal_memcmp(buffer + length - kTerminatorLen, | |
268 | output_terminator_, kTerminatorLen); | |
269 | } | |
270 | ||
271 | class Addr2LinePool : public SymbolizerTool { | |
dee5ea7a KS |
272 | public: |
273 | explicit Addr2LinePool(const char *addr2line_path, | |
274 | LowLevelAllocator *allocator) | |
eac97531 ML |
275 | : addr2line_path_(addr2line_path), allocator_(allocator) { |
276 | addr2line_pool_.reserve(16); | |
277 | } | |
dee5ea7a | 278 | |
696d846a MO |
279 | bool SymbolizePC(uptr addr, SymbolizedStack *stack) override { |
280 | if (const char *buf = | |
281 | SendCommand(stack->info.module, stack->info.module_offset)) { | |
282 | ParseSymbolizePCOutput(buf, stack); | |
283 | return true; | |
284 | } | |
285 | return false; | |
286 | } | |
287 | ||
288 | bool SymbolizeData(uptr addr, DataInfo *info) override { | |
289 | return false; | |
290 | } | |
291 | ||
292 | private: | |
293 | const char *SendCommand(const char *module_name, uptr module_offset) { | |
dee5ea7a KS |
294 | Addr2LineProcess *addr2line = 0; |
295 | for (uptr i = 0; i < addr2line_pool_.size(); ++i) { | |
296 | if (0 == | |
297 | internal_strcmp(module_name, addr2line_pool_[i]->module_name())) { | |
298 | addr2line = addr2line_pool_[i]; | |
299 | break; | |
300 | } | |
301 | } | |
302 | if (!addr2line) { | |
303 | addr2line = | |
304 | new(*allocator_) Addr2LineProcess(addr2line_path_, module_name); | |
305 | addr2line_pool_.push_back(addr2line); | |
306 | } | |
696d846a MO |
307 | CHECK_EQ(0, internal_strcmp(module_name, addr2line->module_name())); |
308 | char buffer[kBufferSize]; | |
309 | internal_snprintf(buffer, kBufferSize, "0x%zx\n0x%zx\n", | |
310 | module_offset, dummy_address_); | |
311 | return addr2line->SendCommand(buffer); | |
dee5ea7a KS |
312 | } |
313 | ||
696d846a | 314 | static const uptr kBufferSize = 64; |
dee5ea7a KS |
315 | const char *addr2line_path_; |
316 | LowLevelAllocator *allocator_; | |
317 | InternalMmapVector<Addr2LineProcess*> addr2line_pool_; | |
696d846a MO |
318 | static const uptr dummy_address_ = |
319 | FIRST_32_SECOND_64(UINT32_MAX, UINT64_MAX); | |
f35db108 WM |
320 | }; |
321 | ||
b4ab7d34 KS |
322 | #if SANITIZER_SUPPORTS_WEAK_HOOKS |
323 | extern "C" { | |
ef1b3fda | 324 | SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE |
b4ab7d34 KS |
325 | bool __sanitizer_symbolize_code(const char *ModuleName, u64 ModuleOffset, |
326 | char *Buffer, int MaxLength); | |
ef1b3fda | 327 | SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE |
b4ab7d34 KS |
328 | bool __sanitizer_symbolize_data(const char *ModuleName, u64 ModuleOffset, |
329 | char *Buffer, int MaxLength); | |
ef1b3fda KS |
330 | SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE |
331 | void __sanitizer_symbolize_flush(); | |
332 | SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE | |
333 | int __sanitizer_symbolize_demangle(const char *Name, char *Buffer, | |
334 | int MaxLength); | |
b4ab7d34 KS |
335 | } // extern "C" |
336 | ||
696d846a | 337 | class InternalSymbolizer : public SymbolizerTool { |
b4ab7d34 | 338 | public: |
df77f0e4 | 339 | static InternalSymbolizer *get(LowLevelAllocator *alloc) { |
b4ab7d34 KS |
340 | if (__sanitizer_symbolize_code != 0 && |
341 | __sanitizer_symbolize_data != 0) { | |
df77f0e4 | 342 | return new(*alloc) InternalSymbolizer(); |
b4ab7d34 KS |
343 | } |
344 | return 0; | |
345 | } | |
ef1b3fda | 346 | |
696d846a MO |
347 | bool SymbolizePC(uptr addr, SymbolizedStack *stack) override { |
348 | bool result = __sanitizer_symbolize_code( | |
349 | stack->info.module, stack->info.module_offset, buffer_, kBufferSize); | |
350 | if (result) ParseSymbolizePCOutput(buffer_, stack); | |
351 | return result; | |
352 | } | |
353 | ||
354 | bool SymbolizeData(uptr addr, DataInfo *info) override { | |
355 | bool result = __sanitizer_symbolize_data(info->module, info->module_offset, | |
356 | buffer_, kBufferSize); | |
357 | if (result) { | |
358 | ParseSymbolizeDataOutput(buffer_, info); | |
359 | info->start += (addr - info->module_offset); // Add the base address. | |
360 | } | |
361 | return result; | |
b4ab7d34 KS |
362 | } |
363 | ||
696d846a | 364 | void Flush() override { |
ef1b3fda KS |
365 | if (__sanitizer_symbolize_flush) |
366 | __sanitizer_symbolize_flush(); | |
367 | } | |
368 | ||
696d846a | 369 | const char *Demangle(const char *name) override { |
ef1b3fda KS |
370 | if (__sanitizer_symbolize_demangle) { |
371 | for (uptr res_length = 1024; | |
372 | res_length <= InternalSizeClassMap::kMaxSize;) { | |
373 | char *res_buff = static_cast<char*>(InternalAlloc(res_length)); | |
374 | uptr req_length = | |
375 | __sanitizer_symbolize_demangle(name, res_buff, res_length); | |
376 | if (req_length > res_length) { | |
377 | res_length = req_length + 1; | |
378 | InternalFree(res_buff); | |
379 | continue; | |
380 | } | |
381 | return res_buff; | |
382 | } | |
383 | } | |
384 | return name; | |
385 | } | |
386 | ||
b4ab7d34 KS |
387 | private: |
388 | InternalSymbolizer() { } | |
389 | ||
390 | static const int kBufferSize = 16 * 1024; | |
391 | char buffer_[kBufferSize]; | |
392 | }; | |
393 | #else // SANITIZER_SUPPORTS_WEAK_HOOKS | |
394 | ||
696d846a | 395 | class InternalSymbolizer : public SymbolizerTool { |
b4ab7d34 | 396 | public: |
df77f0e4 | 397 | static InternalSymbolizer *get(LowLevelAllocator *alloc) { return 0; } |
b4ab7d34 KS |
398 | }; |
399 | ||
400 | #endif // SANITIZER_SUPPORTS_WEAK_HOOKS | |
401 | ||
696d846a | 402 | const char *Symbolizer::PlatformDemangle(const char *name) { |
10189819 | 403 | return DemangleSwiftAndCXX(name); |
696d846a | 404 | } |
b4ab7d34 | 405 | |
696d846a MO |
406 | static SymbolizerTool *ChooseExternalSymbolizer(LowLevelAllocator *allocator) { |
407 | const char *path = common_flags()->external_symbolizer_path; | |
408 | const char *binary_name = path ? StripModuleName(path) : ""; | |
409 | if (path && path[0] == '\0') { | |
410 | VReport(2, "External symbolizer is explicitly disabled.\n"); | |
411 | return nullptr; | |
412 | } else if (!internal_strcmp(binary_name, "llvm-symbolizer")) { | |
413 | VReport(2, "Using llvm-symbolizer at user-specified path: %s\n", path); | |
414 | return new(*allocator) LLVMSymbolizer(path, allocator); | |
415 | } else if (!internal_strcmp(binary_name, "atos")) { | |
416 | #if SANITIZER_MAC | |
417 | VReport(2, "Using atos at user-specified path: %s\n", path); | |
418 | return new(*allocator) AtosSymbolizer(path, allocator); | |
419 | #else // SANITIZER_MAC | |
420 | Report("ERROR: Using `atos` is only supported on Darwin.\n"); | |
421 | Die(); | |
422 | #endif // SANITIZER_MAC | |
423 | } else if (!internal_strcmp(binary_name, "addr2line")) { | |
424 | VReport(2, "Using addr2line at user-specified path: %s\n", path); | |
425 | return new(*allocator) Addr2LinePool(path, allocator); | |
426 | } else if (path) { | |
427 | Report("ERROR: External symbolizer path is set to '%s' which isn't " | |
428 | "a known symbolizer. Please set the path to the llvm-symbolizer " | |
429 | "binary or other known tool.\n", path); | |
430 | Die(); | |
431 | } | |
432 | ||
433 | // Otherwise symbolizer program is unknown, let's search $PATH | |
434 | CHECK(path == nullptr); | |
696d846a MO |
435 | #if SANITIZER_MAC |
436 | if (const char *found_path = FindPathToBinary("atos")) { | |
437 | VReport(2, "Using atos found at: %s\n", found_path); | |
438 | return new(*allocator) AtosSymbolizer(found_path, allocator); | |
439 | } | |
440 | #endif // SANITIZER_MAC | |
5d3805fc JJ |
441 | if (const char *found_path = FindPathToBinary("llvm-symbolizer")) { |
442 | VReport(2, "Using llvm-symbolizer found at: %s\n", found_path); | |
443 | return new(*allocator) LLVMSymbolizer(found_path, allocator); | |
444 | } | |
696d846a MO |
445 | if (common_flags()->allow_addr2line) { |
446 | if (const char *found_path = FindPathToBinary("addr2line")) { | |
447 | VReport(2, "Using addr2line found at: %s\n", found_path); | |
448 | return new(*allocator) Addr2LinePool(found_path, allocator); | |
df77f0e4 | 449 | } |
ef1b3fda | 450 | } |
696d846a MO |
451 | return nullptr; |
452 | } | |
ef1b3fda | 453 | |
696d846a MO |
454 | static void ChooseSymbolizerTools(IntrusiveList<SymbolizerTool> *list, |
455 | LowLevelAllocator *allocator) { | |
456 | if (!common_flags()->symbolize) { | |
457 | VReport(2, "Symbolizer is disabled.\n"); | |
458 | return; | |
ef1b3fda | 459 | } |
5d3805fc | 460 | if (IsAllocatorOutOfMemory()) { |
10189819 MO |
461 | VReport(2, "Cannot use internal symbolizer: out of memory\n"); |
462 | } else if (SymbolizerTool *tool = InternalSymbolizer::get(allocator)) { | |
696d846a MO |
463 | VReport(2, "Using internal symbolizer.\n"); |
464 | list->push_back(tool); | |
465 | return; | |
ef1b3fda | 466 | } |
696d846a MO |
467 | if (SymbolizerTool *tool = LibbacktraceSymbolizer::get(allocator)) { |
468 | VReport(2, "Using libbacktrace symbolizer.\n"); | |
469 | list->push_back(tool); | |
470 | return; | |
2660d12d KS |
471 | } |
472 | ||
696d846a MO |
473 | if (SymbolizerTool *tool = ChooseExternalSymbolizer(allocator)) { |
474 | list->push_back(tool); | |
f35db108 | 475 | } |
ef1b3fda | 476 | |
696d846a MO |
477 | #if SANITIZER_MAC |
478 | VReport(2, "Using dladdr symbolizer.\n"); | |
479 | list->push_back(new(*allocator) DlAddrSymbolizer()); | |
480 | #endif // SANITIZER_MAC | |
481 | } | |
f35db108 | 482 | |
866e32ad | 483 | Symbolizer *Symbolizer::PlatformInit() { |
696d846a MO |
484 | IntrusiveList<SymbolizerTool> list; |
485 | list.clear(); | |
486 | ChooseSymbolizerTools(&list, &symbolizer_allocator_); | |
487 | return new(symbolizer_allocator_) Symbolizer(list); | |
b4ab7d34 KS |
488 | } |
489 | ||
10189819 | 490 | void Symbolizer::LateInitialize() { |
3c6331c2 | 491 | Symbolizer::GetOrInit()->LateInitializeTools(); |
10189819 MO |
492 | InitializeSwiftDemangler(); |
493 | } | |
494 | ||
f35db108 | 495 | } // namespace __sanitizer |
ef1b3fda KS |
496 | |
497 | #endif // SANITIZER_POSIX |