1 //===-- asan_rtl.cc ---------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of AddressSanitizer, an address sanity checker. 11 // 12 // Main file of the ASan run-time library. 13 //===----------------------------------------------------------------------===// 14 #include "asan_allocator.h" 15 #include "asan_interceptors.h" 16 #include "asan_interface.h" 17 #include "asan_internal.h" 18 #include "asan_lock.h" 19 #include "asan_mapping.h" 20 #include "asan_stack.h" 21 #include "asan_stats.h" 22 #include "asan_thread.h" 23 #include "asan_thread_registry.h" 24 25 namespace __asan { 26 27 // -------------------------- Flags ------------------------- {{{1 28 static const size_t kMallocContextSize = 30; 29 static int FLAG_atexit; 30 31 size_t FLAG_redzone; // power of two, >= 32 32 size_t FLAG_quarantine_size; 33 int FLAG_demangle; 34 bool FLAG_symbolize; 35 int FLAG_v; 36 int FLAG_debug; 37 bool FLAG_poison_shadow; 38 int FLAG_report_globals; 39 size_t FLAG_malloc_context_size = kMallocContextSize; 40 uintptr_t FLAG_large_malloc; 41 bool FLAG_handle_segv; 42 bool FLAG_use_sigaltstack; 43 bool FLAG_replace_str; 44 bool FLAG_replace_intrin; 45 bool FLAG_replace_cfallocator; // Used on Mac only. 46 size_t FLAG_max_malloc_fill_size = 0; 47 bool FLAG_use_fake_stack; 48 bool FLAG_abort_on_error; 49 int FLAG_exitcode = ASAN_DEFAULT_FAILURE_EXITCODE; 50 bool FLAG_allow_user_poisoning; 51 int FLAG_sleep_before_dying; 52 bool FLAG_unmap_shadow_on_exit; 53 bool FLAG_disable_core; 54 55 // -------------------------- Globals --------------------- {{{1 56 int asan_inited; 57 bool asan_init_is_running; 58 static void (*death_callback)(void); 59 static void (*error_report_callback)(const char*); 60 char *error_message_buffer = NULL; 61 size_t error_message_buffer_pos = 0; 62 size_t error_message_buffer_size = 0; 63 64 // -------------------------- Misc ---------------- {{{1 65 void ShowStatsAndAbort() { 66 __asan_print_accumulated_stats(); 67 AsanDie(); 68 } 69 70 static void PrintBytes(const char *before, uintptr_t *a) { 71 uint8_t *bytes = (uint8_t*)a; 72 size_t byte_num = (__WORDSIZE) / 8; 73 Printf("%s%p:", before, (void*)a); 74 for (size_t i = 0; i < byte_num; i++) { 75 Printf(" %x%x", bytes[i] >> 4, bytes[i] & 15); 76 } 77 Printf("\n"); 78 } 79 80 size_t ReadFileToBuffer(const char *file_name, char **buff, 81 size_t *buff_size, size_t max_len) { 82 const size_t kMinFileLen = kPageSize; 83 size_t read_len = 0; 84 *buff = 0; 85 *buff_size = 0; 86 // The files we usually open are not seekable, so try different buffer sizes. 87 for (size_t size = kMinFileLen; size <= max_len; size *= 2) { 88 int fd = AsanOpenReadonly(file_name); 89 if (fd < 0) return -1; 90 AsanUnmapOrDie(*buff, *buff_size); 91 *buff = (char*)AsanMmapSomewhereOrDie(size, __FUNCTION__); 92 *buff_size = size; 93 // Read up to one page at a time. 94 read_len = 0; 95 bool reached_eof = false; 96 while (read_len + kPageSize <= size) { 97 size_t just_read = AsanRead(fd, *buff + read_len, kPageSize); 98 if (just_read == 0) { 99 reached_eof = true; 100 break; 101 } 102 read_len += just_read; 103 } 104 AsanClose(fd); 105 if (reached_eof) // We've read the whole file. 106 break; 107 } 108 return read_len; 109 } 110 111 void AsanDie() { 112 static int num_calls = 0; 113 if (AtomicInc(&num_calls) > 1) { 114 // Don't die twice - run a busy loop. 115 while (1) { } 116 } 117 if (FLAG_sleep_before_dying) { 118 Report("Sleeping for %d second(s)\n", FLAG_sleep_before_dying); 119 SleepForSeconds(FLAG_sleep_before_dying); 120 } 121 if (FLAG_unmap_shadow_on_exit) 122 AsanUnmapOrDie((void*)kLowShadowBeg, kHighShadowEnd - kLowShadowBeg); 123 if (death_callback) 124 death_callback(); 125 if (FLAG_abort_on_error) 126 Abort(); 127 Exit(FLAG_exitcode); 128 } 129 130 // ---------------------- mmap -------------------- {{{1 131 void OutOfMemoryMessageAndDie(const char *mem_type, size_t size) { 132 Report("ERROR: AddressSanitizer failed to allocate " 133 "0x%zx (%zd) bytes of %s\n", 134 size, size, mem_type); 135 PRINT_CURRENT_STACK(); 136 ShowStatsAndAbort(); 137 } 138 139 // Reserve memory range [beg, end]. 140 static void ReserveShadowMemoryRange(uintptr_t beg, uintptr_t end) { 141 CHECK((beg % kPageSize) == 0); 142 CHECK(((end + 1) % kPageSize) == 0); 143 size_t size = end - beg + 1; 144 void *res = AsanMmapFixedNoReserve(beg, size); 145 CHECK(res == (void*)beg && "ReserveShadowMemoryRange failed"); 146 } 147 148 // ---------------------- LowLevelAllocator ------------- {{{1 149 void *LowLevelAllocator::Allocate(size_t size) { 150 CHECK((size & (size - 1)) == 0 && "size must be a power of two"); 151 if (allocated_end_ - allocated_current_ < size) { 152 size_t size_to_allocate = Max(size, kPageSize); 153 allocated_current_ = 154 (char*)AsanMmapSomewhereOrDie(size_to_allocate, __FUNCTION__); 155 allocated_end_ = allocated_current_ + size_to_allocate; 156 PoisonShadow((uintptr_t)allocated_current_, size_to_allocate, 157 kAsanInternalHeapMagic); 158 } 159 CHECK(allocated_end_ - allocated_current_ >= size); 160 void *res = allocated_current_; 161 allocated_current_ += size; 162 return res; 163 } 164 165 // ---------------------- DescribeAddress -------------------- {{{1 166 static bool DescribeStackAddress(uintptr_t addr, uintptr_t access_size) { 167 AsanThread *t = asanThreadRegistry().FindThreadByStackAddress(addr); 168 if (!t) return false; 169 const intptr_t kBufSize = 4095; 170 char buf[kBufSize]; 171 uintptr_t offset = 0; 172 const char *frame_descr = t->GetFrameNameByAddr(addr, &offset); 173 // This string is created by the compiler and has the following form: 174 // "FunctioName n alloc_1 alloc_2 ... alloc_n" 175 // where alloc_i looks like "offset size len ObjectName ". 176 CHECK(frame_descr); 177 // Report the function name and the offset. 178 const char *name_end = internal_strchr(frame_descr, ' '); 179 CHECK(name_end); 180 buf[0] = 0; 181 internal_strncat(buf, frame_descr, 182 Min(kBufSize, 183 static_cast<intptr_t>(name_end - frame_descr))); 184 Printf("Address %p is located at offset %zu " 185 "in frame <%s> of T%d's stack:\n", 186 addr, offset, buf, t->tid()); 187 // Report the number of stack objects. 188 char *p; 189 size_t n_objects = internal_simple_strtoll(name_end, &p, 10); 190 CHECK(n_objects > 0); 191 Printf(" This frame has %zu object(s):\n", n_objects); 192 // Report all objects in this frame. 193 for (size_t i = 0; i < n_objects; i++) { 194 size_t beg, size; 195 intptr_t len; 196 beg = internal_simple_strtoll(p, &p, 10); 197 size = internal_simple_strtoll(p, &p, 10); 198 len = internal_simple_strtoll(p, &p, 10); 199 if (beg <= 0 || size <= 0 || len < 0 || *p != ' ') { 200 Printf("AddressSanitizer can't parse the stack frame descriptor: |%s|\n", 201 frame_descr); 202 break; 203 } 204 p++; 205 buf[0] = 0; 206 internal_strncat(buf, p, Min(kBufSize, len)); 207 p += len; 208 Printf(" [%zu, %zu) '%s'\n", beg, beg + size, buf); 209 } 210 Printf("HINT: this may be a false positive if your program uses " 211 "some custom stack unwind mechanism\n" 212 " (longjmp and C++ exceptions *are* supported)\n"); 213 t->summary()->Announce(); 214 return true; 215 } 216 217 static NOINLINE void DescribeAddress(uintptr_t addr, uintptr_t access_size) { 218 // Check if this is a global. 219 if (DescribeAddrIfGlobal(addr)) 220 return; 221 222 if (DescribeStackAddress(addr, access_size)) 223 return; 224 225 // finally, check if this is a heap. 226 DescribeHeapAddress(addr, access_size); 227 } 228 229 // -------------------------- Run-time entry ------------------- {{{1 230 // exported functions 231 #define ASAN_REPORT_ERROR(type, is_write, size) \ 232 extern "C" NOINLINE ASAN_INTERFACE_ATTRIBUTE \ 233 void __asan_report_ ## type ## size(uintptr_t addr); \ 234 void __asan_report_ ## type ## size(uintptr_t addr) { \ 235 GET_CALLER_PC_BP_SP; \ 236 __asan_report_error(pc, bp, sp, addr, is_write, size); \ 237 } 238 239 ASAN_REPORT_ERROR(load, false, 1) 240 ASAN_REPORT_ERROR(load, false, 2) 241 ASAN_REPORT_ERROR(load, false, 4) 242 ASAN_REPORT_ERROR(load, false, 8) 243 ASAN_REPORT_ERROR(load, false, 16) 244 ASAN_REPORT_ERROR(store, true, 1) 245 ASAN_REPORT_ERROR(store, true, 2) 246 ASAN_REPORT_ERROR(store, true, 4) 247 ASAN_REPORT_ERROR(store, true, 8) 248 ASAN_REPORT_ERROR(store, true, 16) 249 250 // Force the linker to keep the symbols for various ASan interface functions. 251 // We want to keep those in the executable in order to let the instrumented 252 // dynamic libraries access the symbol even if it is not used by the executable 253 // itself. This should help if the build system is removing dead code at link 254 // time. 255 static NOINLINE void force_interface_symbols() { 256 volatile int fake_condition = 0; // prevent dead condition elimination. 257 if (fake_condition) { 258 __asan_report_load1(0); 259 __asan_report_load2(0); 260 __asan_report_load4(0); 261 __asan_report_load8(0); 262 __asan_report_load16(0); 263 __asan_report_store1(0); 264 __asan_report_store2(0); 265 __asan_report_store4(0); 266 __asan_report_store8(0); 267 __asan_report_store16(0); 268 __asan_register_global(0, 0, NULL); 269 __asan_register_globals(NULL, 0); 270 __asan_unregister_globals(NULL, 0); 271 __asan_set_death_callback(NULL); 272 __asan_set_error_report_callback(NULL); 273 __asan_handle_no_return(); 274 } 275 } 276 277 // -------------------------- Init ------------------- {{{1 278 static int64_t IntFlagValue(const char *flags, const char *flag, 279 int64_t default_val) { 280 if (!flags) return default_val; 281 const char *str = internal_strstr(flags, flag); 282 if (!str) return default_val; 283 return internal_atoll(str + internal_strlen(flag)); 284 } 285 286 static void asan_atexit() { 287 Printf("AddressSanitizer exit stats:\n"); 288 __asan_print_accumulated_stats(); 289 } 290 291 void CheckFailed(const char *cond, const char *file, int line) { 292 Report("CHECK failed: %s at %s:%d\n", cond, file, line); 293 PRINT_CURRENT_STACK(); 294 ShowStatsAndAbort(); 295 } 296 297 } // namespace __asan 298 299 // ---------------------- Interface ---------------- {{{1 300 using namespace __asan; // NOLINT 301 302 int __asan_set_error_exit_code(int exit_code) { 303 int old = FLAG_exitcode; 304 FLAG_exitcode = exit_code; 305 return old; 306 } 307 308 void NOINLINE __asan_handle_no_return() { 309 int local_stack; 310 AsanThread *curr_thread = asanThreadRegistry().GetCurrent(); 311 CHECK(curr_thread); 312 uintptr_t top = curr_thread->stack_top(); 313 uintptr_t bottom = ((uintptr_t)&local_stack - kPageSize) & ~(kPageSize-1); 314 PoisonShadow(bottom, top - bottom, 0); 315 } 316 317 void NOINLINE __asan_set_death_callback(void (*callback)(void)) { 318 death_callback = callback; 319 } 320 321 void NOINLINE __asan_set_error_report_callback(void (*callback)(const char*)) { 322 error_report_callback = callback; 323 if (callback) { 324 error_message_buffer_size = 1 << 14; 325 error_message_buffer = 326 (char*)AsanMmapSomewhereOrDie(error_message_buffer_size, __FUNCTION__); 327 error_message_buffer_pos = 0; 328 } 329 } 330 331 void __asan_report_error(uintptr_t pc, uintptr_t bp, uintptr_t sp, 332 uintptr_t addr, bool is_write, size_t access_size) { 333 // Do not print more than one report, otherwise they will mix up. 334 static int num_calls = 0; 335 if (AtomicInc(&num_calls) > 1) return; 336 337 Printf("=================================================================\n"); 338 const char *bug_descr = "unknown-crash"; 339 if (AddrIsInMem(addr)) { 340 uint8_t *shadow_addr = (uint8_t*)MemToShadow(addr); 341 // If we are accessing 16 bytes, look at the second shadow byte. 342 if (*shadow_addr == 0 && access_size > SHADOW_GRANULARITY) 343 shadow_addr++; 344 // If we are in the partial right redzone, look at the next shadow byte. 345 if (*shadow_addr > 0 && *shadow_addr < 128) 346 shadow_addr++; 347 switch (*shadow_addr) { 348 case kAsanHeapLeftRedzoneMagic: 349 case kAsanHeapRightRedzoneMagic: 350 bug_descr = "heap-buffer-overflow"; 351 break; 352 case kAsanHeapFreeMagic: 353 bug_descr = "heap-use-after-free"; 354 break; 355 case kAsanStackLeftRedzoneMagic: 356 bug_descr = "stack-buffer-underflow"; 357 break; 358 case kAsanStackMidRedzoneMagic: 359 case kAsanStackRightRedzoneMagic: 360 case kAsanStackPartialRedzoneMagic: 361 bug_descr = "stack-buffer-overflow"; 362 break; 363 case kAsanStackAfterReturnMagic: 364 bug_descr = "stack-use-after-return"; 365 break; 366 case kAsanUserPoisonedMemoryMagic: 367 bug_descr = "use-after-poison"; 368 break; 369 case kAsanGlobalRedzoneMagic: 370 bug_descr = "global-buffer-overflow"; 371 break; 372 } 373 } 374 375 AsanThread *curr_thread = asanThreadRegistry().GetCurrent(); 376 int curr_tid = asanThreadRegistry().GetCurrentTidOrMinusOne(); 377 378 if (curr_thread) { 379 // We started reporting an error message. Stop using the fake stack 380 // in case we will call an instrumented function from a symbolizer. 381 curr_thread->fake_stack().StopUsingFakeStack(); 382 } 383 384 Report("ERROR: AddressSanitizer %s on address " 385 "%p at pc 0x%zx bp 0x%zx sp 0x%zx\n", 386 bug_descr, addr, pc, bp, sp); 387 388 Printf("%s of size %zu at %p thread T%d\n", 389 access_size ? (is_write ? "WRITE" : "READ") : "ACCESS", 390 access_size, addr, curr_tid); 391 392 if (FLAG_debug) { 393 PrintBytes("PC: ", (uintptr_t*)pc); 394 } 395 396 GET_STACK_TRACE_WITH_PC_AND_BP(kStackTraceMax, pc, bp); 397 stack.PrintStack(); 398 399 CHECK(AddrIsInMem(addr)); 400 401 DescribeAddress(addr, access_size); 402 403 uintptr_t shadow_addr = MemToShadow(addr); 404 Report("ABORTING\n"); 405 __asan_print_accumulated_stats(); 406 Printf("Shadow byte and word:\n"); 407 Printf(" %p: %x\n", shadow_addr, *(unsigned char*)shadow_addr); 408 uintptr_t aligned_shadow = shadow_addr & ~(kWordSize - 1); 409 PrintBytes(" ", (uintptr_t*)(aligned_shadow)); 410 Printf("More shadow bytes:\n"); 411 PrintBytes(" ", (uintptr_t*)(aligned_shadow-4*kWordSize)); 412 PrintBytes(" ", (uintptr_t*)(aligned_shadow-3*kWordSize)); 413 PrintBytes(" ", (uintptr_t*)(aligned_shadow-2*kWordSize)); 414 PrintBytes(" ", (uintptr_t*)(aligned_shadow-1*kWordSize)); 415 PrintBytes("=>", (uintptr_t*)(aligned_shadow+0*kWordSize)); 416 PrintBytes(" ", (uintptr_t*)(aligned_shadow+1*kWordSize)); 417 PrintBytes(" ", (uintptr_t*)(aligned_shadow+2*kWordSize)); 418 PrintBytes(" ", (uintptr_t*)(aligned_shadow+3*kWordSize)); 419 PrintBytes(" ", (uintptr_t*)(aligned_shadow+4*kWordSize)); 420 if (error_report_callback) { 421 error_report_callback(error_message_buffer); 422 } 423 AsanDie(); 424 } 425 426 void __asan_init() { 427 if (asan_inited) return; 428 asan_init_is_running = true; 429 430 // Make sure we are not statically linked. 431 AsanDoesNotSupportStaticLinkage(); 432 433 // flags 434 const char *options = AsanGetEnv("ASAN_OPTIONS"); 435 FLAG_malloc_context_size = 436 IntFlagValue(options, "malloc_context_size=", kMallocContextSize); 437 CHECK(FLAG_malloc_context_size <= kMallocContextSize); 438 439 FLAG_max_malloc_fill_size = 440 IntFlagValue(options, "max_malloc_fill_size=", 0); 441 442 FLAG_v = IntFlagValue(options, "verbosity=", 0); 443 444 FLAG_redzone = IntFlagValue(options, "redzone=", 445 (ASAN_LOW_MEMORY) ? 64 : 128); 446 CHECK(FLAG_redzone >= 32); 447 CHECK((FLAG_redzone & (FLAG_redzone - 1)) == 0); 448 449 FLAG_atexit = IntFlagValue(options, "atexit=", 0); 450 FLAG_poison_shadow = IntFlagValue(options, "poison_shadow=", 1); 451 FLAG_report_globals = IntFlagValue(options, "report_globals=", 1); 452 FLAG_handle_segv = IntFlagValue(options, "handle_segv=", ASAN_NEEDS_SEGV); 453 FLAG_use_sigaltstack = IntFlagValue(options, "use_sigaltstack=", 0); 454 FLAG_symbolize = IntFlagValue(options, "symbolize=", 1); 455 FLAG_demangle = IntFlagValue(options, "demangle=", 1); 456 FLAG_debug = IntFlagValue(options, "debug=", 0); 457 FLAG_replace_cfallocator = IntFlagValue(options, "replace_cfallocator=", 1); 458 FLAG_replace_str = IntFlagValue(options, "replace_str=", 1); 459 FLAG_replace_intrin = IntFlagValue(options, "replace_intrin=", 1); 460 FLAG_use_fake_stack = IntFlagValue(options, "use_fake_stack=", 1); 461 FLAG_exitcode = IntFlagValue(options, "exitcode=", 462 ASAN_DEFAULT_FAILURE_EXITCODE); 463 FLAG_allow_user_poisoning = IntFlagValue(options, 464 "allow_user_poisoning=", 1); 465 FLAG_sleep_before_dying = IntFlagValue(options, "sleep_before_dying=", 0); 466 FLAG_abort_on_error = IntFlagValue(options, "abort_on_error=", 0); 467 FLAG_unmap_shadow_on_exit = IntFlagValue(options, "unmap_shadow_on_exit=", 0); 468 // By default, disable core dumper on 64-bit -- 469 // it makes little sense to dump 16T+ core. 470 FLAG_disable_core = IntFlagValue(options, "disable_core=", __WORDSIZE == 64); 471 472 FLAG_quarantine_size = IntFlagValue(options, "quarantine_size=", 473 (ASAN_LOW_MEMORY) ? 1UL << 24 : 1UL << 28); 474 475 if (FLAG_v) { 476 Report("Parsed ASAN_OPTIONS: %s\n", options); 477 } 478 479 if (FLAG_atexit) { 480 Atexit(asan_atexit); 481 } 482 483 // interceptors 484 InitializeAsanInterceptors(); 485 486 ReplaceSystemMalloc(); 487 ReplaceOperatorsNewAndDelete(); 488 489 if (FLAG_v) { 490 Printf("|| `[%p, %p]` || HighMem ||\n", kHighMemBeg, kHighMemEnd); 491 Printf("|| `[%p, %p]` || HighShadow ||\n", 492 kHighShadowBeg, kHighShadowEnd); 493 Printf("|| `[%p, %p]` || ShadowGap ||\n", 494 kShadowGapBeg, kShadowGapEnd); 495 Printf("|| `[%p, %p]` || LowShadow ||\n", 496 kLowShadowBeg, kLowShadowEnd); 497 Printf("|| `[%p, %p]` || LowMem ||\n", kLowMemBeg, kLowMemEnd); 498 Printf("MemToShadow(shadow): %p %p %p %p\n", 499 MEM_TO_SHADOW(kLowShadowBeg), 500 MEM_TO_SHADOW(kLowShadowEnd), 501 MEM_TO_SHADOW(kHighShadowBeg), 502 MEM_TO_SHADOW(kHighShadowEnd)); 503 Printf("red_zone=%zu\n", (size_t)FLAG_redzone); 504 Printf("malloc_context_size=%zu\n", (size_t)FLAG_malloc_context_size); 505 506 Printf("SHADOW_SCALE: %zx\n", (size_t)SHADOW_SCALE); 507 Printf("SHADOW_GRANULARITY: %zx\n", (size_t)SHADOW_GRANULARITY); 508 Printf("SHADOW_OFFSET: %zx\n", (size_t)SHADOW_OFFSET); 509 CHECK(SHADOW_SCALE >= 3 && SHADOW_SCALE <= 7); 510 } 511 512 if (FLAG_disable_core) { 513 AsanDisableCoreDumper(); 514 } 515 516 if (AsanShadowRangeIsAvailable()) { 517 if (kLowShadowBeg != kLowShadowEnd) { 518 // mmap the low shadow plus at least one page. 519 ReserveShadowMemoryRange(kLowShadowBeg - kMmapGranularity, kLowShadowEnd); 520 } 521 // mmap the high shadow. 522 ReserveShadowMemoryRange(kHighShadowBeg, kHighShadowEnd); 523 // protect the gap 524 void *prot = AsanMprotect(kShadowGapBeg, kShadowGapEnd - kShadowGapBeg + 1); 525 CHECK(prot == (void*)kShadowGapBeg); 526 } else { 527 Report("Shadow memory range interleaves with an existing memory mapping. " 528 "ASan cannot proceed correctly. ABORTING.\n"); 529 AsanDumpProcessMap(); 530 AsanDie(); 531 } 532 533 InstallSignalHandlers(); 534 535 // On Linux AsanThread::ThreadStart() calls malloc() that's why asan_inited 536 // should be set to 1 prior to initializing the threads. 537 asan_inited = 1; 538 asan_init_is_running = false; 539 540 asanThreadRegistry().Init(); 541 asanThreadRegistry().GetMain()->ThreadStart(); 542 force_interface_symbols(); // no-op. 543 544 if (FLAG_v) { 545 Report("AddressSanitizer Init done\n"); 546 } 547 } 548 549 #if defined(ASAN_USE_PREINIT_ARRAY) 550 // On Linux, we force __asan_init to be called before anyone else 551 // by placing it into .preinit_array section. 552 // FIXME: do we have anything like this on Mac? 553 __attribute__((section(".preinit_array"))) 554 typeof(__asan_init) *__asan_preinit =__asan_init; 555 #elif defined(_WIN32) && defined(_DLL) 556 // On Windows, when using dynamic CRT (/MD), we can put a pointer 557 // to __asan_init into the global list of C initializers. 558 // See crt0dat.c in the CRT sources for the details. 559 #pragma section(".CRT$XIB", long, read) // NOLINT 560 __declspec(allocate(".CRT$XIB")) void (*__asan_preinit)() = __asan_init; 561 #endif 562
