Fix a crash when generating vtables that contain destructors.

llvm-svn: 81587
diff --git a/clang/test/CodeGenCXX/vtable-cast-crash.cpp b/clang/test/CodeGenCXX/vtable-cast-crash.cpp
new file mode 100644
index 0000000..a91d979
--- /dev/null
+++ b/clang/test/CodeGenCXX/vtable-cast-crash.cpp
@@ -0,0 +1,21 @@
+// RUN: clang-cc -emit-llvm-only %s
+struct A
+{
+A();    
+virtual ~A();
+};
+
+struct B: A
+{
+  B();
+  ~B();
+};
+
+B::B()
+{
+}
+
+B::~B()
+{
+}
+