libsanitizer/asan/asan_stack.cc

   1 //===-- asan_stack.cc -----------------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of AddressSanitizer, an address sanity checker.
   9 //
  10 // Code for ASan stack trace.
  11 //===----------------------------------------------------------------------===//
  12 #include "asan_internal.h"
  13 #include "asan_flags.h"
  14 #include "asan_stack.h"
  15 #include "sanitizer_common/sanitizer_flags.h"
  16
  17 namespace __asan {
  18
  19 static bool MaybeCallAsanSymbolize(const void *pc, char *out_buffer,
  20                                    int out_size) {
  21   return (&__asan_symbolize) ? __asan_symbolize(pc, out_buffer, out_size)
  22                              : false;
  23 }
  24
  25 void PrintStack(const uptr *trace, uptr size) {
  26   StackTrace::PrintStack(trace, size, MaybeCallAsanSymbolize);
  27 }
  28
  29 void PrintStack(StackTrace *stack) {
  30   PrintStack(stack->trace, stack->size);
  31 }
  32
  33 }  // namespace __asan
  34
  35 // ------------------ Interface -------------- {{{1
  36
  37 // Provide default implementation of __asan_symbolize that does nothing
  38 // and may be overriden by user if he wants to use his own symbolization.
  39 // ASan on Windows has its own implementation of this.
  40 #if !SANITIZER_WINDOWS && !SANITIZER_SUPPORTS_WEAK_HOOKS
  41 SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE NOINLINE
  42 bool __asan_symbolize(const void *pc, char *out_buffer, int out_size) {
  43   return false;
  44 }
  45 #endif
  46
  47 extern "C" {
  48 SANITIZER_INTERFACE_ATTRIBUTE
  49 void __sanitizer_print_stack_trace() {
  50   using namespace __asan;
  51   PRINT_CURRENT_STACK();
  52 }
  53 }  // extern "C"