--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compiler-rt/test/tsan/fd_pipe_race.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,37 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include "test.h"
+
+int fds[2];
+
+void *Thread1(void *x) {
+  write(fds[1], "a", 1);
+  barrier_wait(&barrier);
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  barrier_wait(&barrier);
+  close(fds[0]);
+  close(fds[1]);
+  return NULL;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  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);
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:   Write of size 8
+// CHECK:     #0 close
+// CHECK:     #1 Thread2
+// CHECK:   Previous read of size 8
+// CHECK:     #0 write
+// CHECK:     #1 Thread1
+
+