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1// RUN: %clang_tsan -O1 %s -lpthread -o %t && %deflake %run %t | FileCheck %s2// Regression test for3// https://github.com/google/sanitizers/issues/4684// When the data race was reported, pthread_atfork() handler used to be5// executed which caused another race report in the same thread, which resulted6// in a deadlock.7#include "test.h"8 9int glob = 0;10 11void *worker(void *unused) {12 barrier_wait(&barrier);13 glob++;14 return NULL;15}16 17void atfork() {18 fprintf(stderr, "ATFORK\n");19 glob++;20}21 22int main() {23 barrier_init(&barrier, 2);24 pthread_atfork(atfork, atfork, atfork);25 pthread_t t;26 pthread_create(&t, NULL, worker, NULL);27 glob++;28 barrier_wait(&barrier);29 pthread_join(t, NULL);30 // CHECK: ThreadSanitizer: data race31 // CHECK-NOT: ATFORK32 return 0;33}34