1 files changed, 22 insertions, 0 deletions
diff --git a/test/tsan/sleep_sync2.cc b/test/tsan/sleep_sync2.cc
new file mode 100644
index 000000000000..4e616992ecc9
--- /dev/null
+++ b/test/tsan/sleep_sync2.cc
@@ -0,0 +1,22 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include <pthread.h>
+#include <unistd.h>
+
+int X = 0;
+
+void *Thread(void *p) {
+  X = 42;
+  return 0;
+}
+
+int main() {
+  pthread_t t;
+  sleep(1);
+  pthread_create(&t, 0, Thread, 0);
+  X = 43;
+  pthread_join(t, 0);
+  return 0;
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK-NOT: As if synchronized via sleep