1 files changed, 15 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/tiny_race.c b/lib/tsan/lit_tests/tiny_race.c
new file mode 100644
index 000000000000..44cc1332f2ab
--- /dev/null
+++ b/lib/tsan/lit_tests/tiny_race.c
@@ -0,0 +1,15 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <pthread.h>
+int Global;
+void *Thread1(void *x) {
+  Global = 42;
+  return x;
+}
+int main() {
+  pthread_t t;
+  pthread_create(&t, NULL, Thread1, NULL);
+  Global = 43;
+  pthread_join(t, NULL);
+  return Global;
+}
+// CHECK: WARNING: ThreadSanitizer: data race