Index: lib/asan/asan_mac.cc =================================================================== --- lib/asan/asan_mac.cc +++ lib/asan/asan_mac.cc @@ -374,13 +374,6 @@ work(); \ } -// Forces the compiler to generate a frame pointer in the function. -#define ENABLE_FRAME_POINTER \ - do { \ - volatile uptr enable_fp; \ - enable_fp = GET_CURRENT_FRAME(); \ - } while (0) - INTERCEPTOR(void, dispatch_async, dispatch_queue_t dq, void(^work)(void)) { ENABLE_FRAME_POINTER; Index: lib/asan/asan_report.cc =================================================================== --- lib/asan/asan_report.cc +++ lib/asan/asan_report.cc @@ -937,6 +937,8 @@ void __asan_report_error(uptr pc, uptr bp, uptr sp, uptr addr, int is_write, uptr access_size) { + ENABLE_FRAME_POINTER; + // Determine the error type. const char *bug_descr = "unknown-crash"; if (AddrIsInMem(addr)) { Index: lib/sanitizer_common/sanitizer_internal_defs.h =================================================================== --- lib/sanitizer_common/sanitizer_internal_defs.h +++ lib/sanitizer_common/sanitizer_internal_defs.h @@ -325,4 +325,11 @@ } while (internal_iserror(res, &rverrno) && rverrno == EINTR); \ } +// Forces the compiler to generate a frame pointer in the function. +#define ENABLE_FRAME_POINTER \ + do { \ + volatile uptr enable_fp; \ + enable_fp = GET_CURRENT_FRAME(); \ + } while (0) + #endif // SANITIZER_DEFS_H Index: test/asan/TestCases/Darwin/crashlog-stacktraces.c =================================================================== --- test/asan/TestCases/Darwin/crashlog-stacktraces.c +++ test/asan/TestCases/Darwin/crashlog-stacktraces.c @@ -0,0 +1,43 @@ +// RUN: %clang_asan -O0 %s -o %t +// RUN: not %run %t 2>&1 | FileCheck %s + +#include +#include +#include +#include + +void death_function() { + fprintf(stderr, "DEATH CALLBACK\n"); + + void* callstack[128]; + int i, frames = backtrace(callstack, 128); + char** strs = backtrace_symbols(callstack, frames); + for (i = 0; i < frames; ++i) { + fprintf(stderr, "%s\n", strs[i]); + } + free(strs); + + fprintf(stderr, "END OF BACKTRACE\n"); +} + +int fault_function() { + char *x = (char*)malloc(10 * sizeof(char)); + free(x); + return x[5]; // BOOM +} + +int main() { + __sanitizer_set_death_callback(death_function); + fault_function(); + return 0; +} + +// CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}} +// CHECK: {{READ of size 1 at 0x.* thread T0}} +// CHECK: {{ #0 0x.* in fault_function}} + +// CHECK: DEATH CALLBACK +// CHECK: death_function +// CHECK: fault_function +// CHECK: main +// CHECK: END OF BACKTRACE