1 files changed, 10 insertions, 1 deletions
diff --git a/test/CodeGen/union-init2.c b/test/CodeGen/union-init2.c
index ac469cd4b512..1386c27cc0bd 100644
--- a/test/CodeGen/union-init2.c
+++ b/test/CodeGen/union-init2.c
@@ -1,4 +1,13 @@
-// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-linux-gnu | grep "bitcast (%0\* @r to %union.x\*), \[4 x i8\] undef"
+// RUN: %clang_cc1 -emit-llvm %s -o - -triple i686-pc-linux-gnu | FileCheck %s
 
 // Make sure we generate something sane instead of a ptrtoint
+// CHECK: bitcast (%0* @r to %union.x*), [4 x i8] undef
 union x {long long b;union x* a;} r = {.a = &r};
+
+
+// CHECK: global %1 { [3 x i8] zeroinitializer, [5 x i8] undef }
+union z {
+  char a[3];
+  long long b;
+};
+union z y = {};