forked from OSchip/llvm-project
55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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int fds[2];
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void *ThreadCreatePipe(void *x) {
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pipe(fds);
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return NULL;
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}
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void *ThreadDummy(void *x) {
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return NULL;
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}
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void *ThreadWrite(void *x) {
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write(fds[1], "a", 1);
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barrier_wait(&barrier);
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return NULL;
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}
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void *ThreadClose(void *x) {
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barrier_wait(&barrier);
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close(fds[0]);
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close(fds[1]);
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return NULL;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_t t_create;
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pthread_create(&t_create, NULL, ThreadCreatePipe, NULL);
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pthread_join(t_create, NULL);
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for (int i = 0; i < 100; i++) {
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pthread_t t_dummy;
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pthread_create(&t_dummy, NULL, ThreadDummy, NULL);
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pthread_join(t_dummy, NULL);
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}
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pthread_t t[2];
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pthread_create(&t[0], NULL, ThreadWrite, NULL);
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pthread_create(&t[1], NULL, ThreadClose, NULL);
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pthread_join(t[0], NULL);
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pthread_join(t[1], NULL);
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}
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// CHECK-NOT: CHECK failed
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 8
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// CHECK: #0 close
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// CHECK: #1 ThreadClose
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// CHECK: Previous read of size 8
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// CHECK: #0 write
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// CHECK: #1 ThreadWrite
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