1 files changed, 26 insertions, 0 deletions
diff --git a/test/tsan/simple_race.cc b/test/tsan/simple_race.cc
new file mode 100644
index 000000000..47854cfd9
--- /dev/null
+++ b/test/tsan/simple_race.cc
@@ -0,0 +1,26 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+
+int Global;
+
+void *Thread1(void *x) {
+  Global++;
+  return NULL;
+}
+
+void *Thread2(void *x) {
+  Global--;
+  return NULL;
+}
+
+int main() {
+  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: SUMMARY: ThreadSanitizer: data race{{.*}}Thread