fix PR6660/6168: emit padding as zeros instead of undef. Because
trailing fields may not be represented in initializer lists, they
are being handled as padding and those fields *must* be zero
initialized.
llvm-svn: 101067
diff --git a/clang/test/CodeGen/union-init2.c b/clang/test/CodeGen/union-init2.c
index ac469cd..bd56f9e 100644
--- a/clang/test/CodeGen/union-init2.c
+++ b/clang/test/CodeGen/union-init2.c
@@ -1,4 +1,7 @@
-// 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
union x {long long b;union x* a;} r = {.a = &r};
+
+
+// CHECK: bitcast (%0* @r to %union.x*), [4 x i8] zero
\ No newline at end of file