1// RUN: %clang_asan -O0 %s -o %t
2// RUN: not %run %t 2>&1 | FileCheck %s
3
4// Since ASan is built with -fomit-frame-pointer, backtrace is not able to
5// symbolicate the trace past ASan runtime on i386. (This is fixed in
6// latest OS X.)
7// REQUIRES: asan-64-bits
8
9#include <execinfo.h>
10#include <sanitizer/common_interface_defs.h>
11#include <stdio.h>
12#include <stdlib.h>
13
14void death_function() {
15  fprintf(stderr, "DEATH CALLBACK\n");
16
17  void* callstack[128];
18  int i, frames = backtrace(callstack, 128);
19  char** strs = backtrace_symbols(callstack, frames);
20  for (i = 0; i < frames; ++i) {
21    fprintf(stderr, "%s\n", strs[i]);
22  }
23  free(strs);
24
25  fprintf(stderr, "END OF BACKTRACE\n");
26}
27
28int fault_function() {
29  char *x = (char*)malloc(10 * sizeof(char));
30  free(x);
31  return x[5];  // BOOM
32}
33
34int main() {
35  __sanitizer_set_death_callback(death_function);
36  fault_function();
37  return 0;
38}
39
40// CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
41// CHECK: {{READ of size 1 at 0x.* thread T0}}
42// CHECK: {{    #0 0x.* in fault_function}}
43
44// CHECK: DEATH CALLBACK
45// CHECK: death_function
46// CHECK: fault_function
47// CHECK: main
48// CHECK: END OF BACKTRACE
49