| // RUN: %clang_tsan -O1 %s -lpthread -o %t && %deflake %run %t | FileCheck %s |
| // Regression test for |
| // https://code.google.com/p/thread-sanitizer/issues/detail?id=61 |
| // When the data race was reported, pthread_atfork() handler used to be |
| // executed which caused another race report in the same thread, which resulted |
| // in a deadlock. |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| int glob = 0; |
| |
| void *worker(void *unused) { |
| sleep(1); |
| glob++; |
| return NULL; |
| } |
| |
| void atfork() { |
| fprintf(stderr, "ATFORK\n"); |
| glob++; |
| } |
| |
| int main() { |
| pthread_atfork(atfork, NULL, NULL); |
| pthread_t t; |
| pthread_create(&t, NULL, worker, NULL); |
| glob++; |
| pthread_join(t, NULL); |
| // CHECK: ThreadSanitizer: data race |
| // CHECK-NOT: ATFORK |
| return 0; |
| } |