1 files changed, 20 insertions, 0 deletions
diff --git a/test/tsan/heap_race.cc b/test/tsan/heap_race.cc
new file mode 100644
index 000000000000..c3da68f42658
--- /dev/null
+++ b/test/tsan/heap_race.cc
@@ -0,0 +1,20 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include <pthread.h>
+#include <stdio.h>
+#include <stddef.h>
+
+void *Thread(void *a) {
+  ((int*)a)[0]++;
+  return NULL;
+}
+
+int main() {
+  int *p = new int(42);
+  pthread_t t;
+  pthread_create(&t, NULL, Thread, p);
+  p[0]++;
+  pthread_join(t, NULL);
+  delete p;
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race