| Greg Fitzgerald | b8aae54 | 2014-04-30 21:34:17 +0000 | [diff] [blame] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
| Bill Seurer | f2611ac | 2017-02-02 21:32:07 +0000 | [diff] [blame] | 2 | // UNSUPPORTED: powerpc64le |
| Dmitry Vyukov | b4ede78 | 2013-01-09 08:22:06 +0000 | [diff] [blame] | 3 | #include <stdio.h> |
| 4 | |
| Viktor Kutuzov | 348758b | 2014-10-10 07:01:52 +0000 | [diff] [blame] | 5 | // Defined by tsan. |
| Dmitry Vyukov | b4ede78 | 2013-01-09 08:22:06 +0000 | [diff] [blame] | 6 | extern "C" void *__interceptor_malloc(unsigned long size); |
| 7 | extern "C" void __interceptor_free(void *p); |
| 8 | |
| 9 | extern "C" void *malloc(unsigned long size) { |
| 10 | static int first = 0; |
| 11 | if (__sync_lock_test_and_set(&first, 1) == 0) |
| Renato Golin | 1f42286 | 2016-04-15 12:34:00 +0000 | [diff] [blame] | 12 | fprintf(stderr, "user malloc\n"); |
| Dmitry Vyukov | b4ede78 | 2013-01-09 08:22:06 +0000 | [diff] [blame] | 13 | return __interceptor_malloc(size); |
| 14 | } |
| 15 | |
| 16 | extern "C" void free(void *p) { |
| 17 | __interceptor_free(p); |
| 18 | } |
| 19 | |
| 20 | int main() { |
| 21 | volatile char *p = (char*)malloc(10); |
| 22 | p[0] = 0; |
| 23 | free((void*)p); |
| 24 | } |
| 25 | |
| 26 | // CHECK: user malloc |
| 27 | // CHECK-NOT: ThreadSanitizer |
| 28 | |