PR4316: Fix IRGen for cast-to-union extension.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/cast-to-union.c b/test/CodeGen/cast-to-union.c
index 03aee3e..6098bcc 100644
--- a/test/CodeGen/cast-to-union.c
+++ b/test/CodeGen/cast-to-union.c
@@ -7,6 +7,7 @@
 
 void foo() {
   union u ola = (union u) 351;
+  union u olb = (union u) 1.0;
 }
 
 union u w = (union u)2;