| Dmitry Vyukov | b4ede78 | 2013-01-09 08:22:06 +0000 | [diff] [blame^] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s |
| 2 | #include <stdio.h> |
| 3 | |
| 4 | // defined by tsan. |
| 5 | extern "C" void *__interceptor_malloc(unsigned long size); |
| 6 | extern "C" void __interceptor_free(void *p); |
| 7 | |
| 8 | extern "C" void *malloc(unsigned long size) { |
| 9 | static int first = 0; |
| 10 | if (__sync_lock_test_and_set(&first, 1) == 0) |
| 11 | printf("user malloc\n"); |
| 12 | return __interceptor_malloc(size); |
| 13 | } |
| 14 | |
| 15 | extern "C" void free(void *p) { |
| 16 | __interceptor_free(p); |
| 17 | } |
| 18 | |
| 19 | int main() { |
| 20 | volatile char *p = (char*)malloc(10); |
| 21 | p[0] = 0; |
| 22 | free((void*)p); |
| 23 | } |
| 24 | |
| 25 | // CHECK: user malloc |
| 26 | // CHECK-NOT: ThreadSanitizer |
| 27 | |