diff --git a/C++/malloc_error.cpp b/C++/malloc_error.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..1eb3532ea88d6afa9f66a08a27d125262be713c1
--- /dev/null
+++ b/C++/malloc_error.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+
+struct A {
+    vector<int> v;
+};
+
+int main() {
+    // Init the struct with 'malloc' which has a vector
+    A* a = reinterpret_cast<A*>(malloc(sizeof(A)));
+    // unexpected action
+    a->v.push_back(100);
+    return 0;
+}
\ No newline at end of file