c++ override test new placement operator

test/main-override.cpp

@@ -95,6 +95,10 @@ static void various_tests() {
   delete t;
   t = new (std::nothrow) Test(42);
   delete t;
+  auto tbuf = new unsigned char[sizeof(Test)];
+  t = new (tbuf) Test(42);
+  t->~Test();
+  delete tbuf;
 }
 
 class Static {
@@ -298,4 +302,4 @@ static void tsan_numa_test() {
   auto t1 = std::thread(dummy_worker);
   dummy_worker();
   t1.join();
-}
+}