[MS ABI] Error instead of generating bad vftables for certain virtual hierarchies (PR18967)

Erroring out until we fix the bug means we don't have to keep chasing down
this same miscompile in a bunch of different places.

Differential Revision: http://llvm-reviews.chandlerc.com/D2890

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@202331 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp b/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
index 80efdd0490..0f53f73919 100644
--- a/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
+++ b/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
@@ -217,7 +217,12 @@ void call_complete_dtor() {
   // CHECK: ret
 }
 
-struct C : B {
+struct X : virtual VBase {
+  int x;
+};
+
+
+struct C : X {
   C();
   // has an implicit vdtor.
 };