diff --git a/test/test-overflow.cpp b/test/test-overflow.cpp
new file mode 100644
index 00000000..7aca6068
--- /dev/null
+++ b/test/test-overflow.cpp
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <new>
+#include <vector>
+#include <future>
+#include <iostream>
+
+#include <thread>
+#include <assert.h>
+static void block_overflow1(void) {
+  uint8_t* p = (uint8_t*)malloc(17);
+  p[18] = 0;
+  free(p);
+  uint8_t* q = (uint8_t*)malloc(17);
+  free(p);
+  free(q);
+}
+
+#define OVF_SIZE 100
+
+static void block_overflow2(void) {
+  uint8_t* p = (uint8_t*)malloc(30);
+  memset(p+30, 0, OVF_SIZE);
+  free(p);
+}
+
+int main() {
+  printf("test overflow..\n");
+  block_overflow1();
+  block_overflow2(); 
+  printf("done..\n");
+  return 0;
+}