libsanitizer/ubsan/ubsan_diag_standalone.cc

   1 //===-- ubsan_diag_standalone.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 // Diagnostic reporting for the standalone UBSan runtime.
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 #include "ubsan_platform.h"
  13 #if CAN_SANITIZE_UB
  14 #include "ubsan_diag.h"
  15
  16 using namespace __ubsan;
  17
  18 extern "C" {
  19 SANITIZER_INTERFACE_ATTRIBUTE
  20 void __sanitizer_print_stack_trace() {
  21   uptr top = 0;
  22   uptr bottom = 0;
  23   bool request_fast_unwind = common_flags()->fast_unwind_on_fatal;
  24   if (request_fast_unwind)
  25     __sanitizer::GetThreadStackTopAndBottom(false, &top, &bottom);
  26
  27   GET_CURRENT_PC_BP_SP;
  28   (void)sp;
  29   BufferedStackTrace stack;
  30   stack.Unwind(kStackTraceMax, pc, bp, nullptr, top, bottom,
  31                request_fast_unwind);
  32   stack.Print();
  33 }
  34 } // extern "C"
  35
  36 #endif  // CAN_SANITIZE_UB