1 files changed, 20 insertions, 0 deletions
diff --git a/test/tsan/Darwin/realloc-zero.cc b/test/tsan/Darwin/realloc-zero.cc
new file mode 100644
index 000000000000..98262463cb2d
--- /dev/null
+++ b/test/tsan/Darwin/realloc-zero.cc
@@ -0,0 +1,20 @@
+// Test that realloc(nullptr, 0) return a non-NULL pointer.
+
+// RUN: %clang_tsan %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include <malloc/malloc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+
+int main() {
+  void *p = realloc(NULL, 0);
+  if (!p) {
+    abort();
+  }
+  fprintf(stderr, "Okay.\n");
+  return 0;
+}
+
+// CHECK: Okay.