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| // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
| #include <pthread.h>
| #include <stdio.h>
| #include <unistd.h>
|
| int fds[2];
| int X;
|
| void *Thread1(void *x) {
| X = 42;
| write(fds[1], "a", 1);
| return NULL;
| }
|
| void *Thread2(void *x) {
| char buf;
| while (read(fds[0], &buf, 1) != 1) {
| }
| X = 43;
| return NULL;
| }
|
| int main() {
| pipe(fds);
| pthread_t t[2];
| pthread_create(&t[0], NULL, Thread1, NULL);
| pthread_create(&t[1], NULL, Thread2, NULL);
| pthread_join(t[0], NULL);
| pthread_join(t[1], NULL);
| fprintf(stderr, "OK\n");
| }
|
| // CHECK-NOT: WARNING: ThreadSanitizer: data race
|
|
