| // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
| |
| // Windows does not have execinfo.h. For now, be conservative and |
| // restrict the test to glibc. |
| // REQUIRES: glibc-2.27 |
| |
| // Test the backtrace() interceptor. |
| |
| #include <assert.h> |
| #include <execinfo.h> |
| #include <math.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #define MAX_BT 100 |
| |
| int main() { |
| void **buffer = (void **)malloc(sizeof(void *) * MAX_BT); |
| assert(buffer != NULL); |
| free(buffer); |
| |
| // Deliberate use-after-free of 'buffer'. We expect ASan to |
| // catch this, without triggering internal sanitizer errors. |
| int numEntries = backtrace(buffer, MAX_BT); |
| printf("backtrace returned %d entries\n", numEntries); |
| |
| // CHECK: use-after-free |
| // CHECK: SUMMARY |
| return 0; |
| } |