Prevent a code gen. crash on empty unions - pr5408.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86287 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/empty-union.cpp b/test/CodeGenCXX/empty-union.cpp
new file mode 100644
index 0000000..fdd9741
--- /dev/null
+++ b/test/CodeGenCXX/empty-union.cpp
@@ -0,0 +1,10 @@
+// RUN: clang-cc -emit-llvm -o - %s
+
+union sigval { };
+
+union sigval sigev_value;
+
+int main()
+{
+  return sizeof(sigev_value);
+}