| // RUN: %clang_tsan -O1 %s -lpthread -o %t && %deflake %run %t | FileCheck %s |
| // Regression test for |
| // https://github.com/google/sanitizers/issues/468 |
| // 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 "test.h" |
| |
| int glob = 0; |
| |
| void *worker(void *unused) { |
| barrier_wait(&barrier); |
| glob++; |
| return NULL; |
| } |
| |
| void atfork() { |
| fprintf(stderr, "ATFORK\n"); |
| glob++; |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| pthread_atfork(atfork, atfork, atfork); |
| pthread_t t; |
| pthread_create(&t, NULL, worker, NULL); |
| glob++; |
| barrier_wait(&barrier); |
| pthread_join(t, NULL); |
| // CHECK: ThreadSanitizer: data race |
| // CHECK-NOT: ATFORK |
| return 0; |
| } |