contrib/compiler-rt/lib/ubsan/ubsan_diag_standalone.cc

   1 //===-- ubsan_diag_standalone.cc ------------------------------------------===//
   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 // Diagnostic reporting for the standalone UBSan runtime.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "ubsan_platform.h"
  15 #if CAN_SANITIZE_UB
  16 #include "ubsan_diag.h"
  17
  18 using namespace __ubsan;
  19
  20 extern "C" {
  21 SANITIZER_INTERFACE_ATTRIBUTE
  22 void __sanitizer_print_stack_trace() {
  23   uptr top = 0;
  24   uptr bottom = 0;
  25   bool request_fast_unwind = common_flags()->fast_unwind_on_fatal;
  26   if (request_fast_unwind)
  27     __sanitizer::GetThreadStackTopAndBottom(false, &top, &bottom);
  28
  29   GET_CURRENT_PC_BP_SP;
  30   (void)sp;
  31   BufferedStackTrace stack;
  32   stack.Unwind(kStackTraceMax, pc, bp, nullptr, top, bottom,
  33                request_fast_unwind);
  34   stack.Print();
  35 }
  36 } // extern "C"
  37
  38 #endif  // CAN_SANITIZE_UB