From 3fdd243182b1cb2fb7667ecfffe6692b6fce4ddf Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 30 May 2007 05:37:18 +0000
Subject: [PATCH] new testcase for PR1421

llvm-svn: 37356
---
 test/CFrontend/2007-05-29-UnionCopy.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 test/CFrontend/2007-05-29-UnionCopy.c

diff --git a/test/CFrontend/2007-05-29-UnionCopy.c b/test/CFrontend/2007-05-29-UnionCopy.c
new file mode 100644
index 00000000000..ded67d4d6b2
--- /dev/null
+++ b/test/CFrontend/2007-05-29-UnionCopy.c
@@ -0,0 +1,18 @@
+// RUN: %llvmgcc -S -o - -emit-llvm %s | grep memcpy
+// PR1421
+
+struct A {
+  char c;
+  int i;
+};
+
+struct B {
+  int c;
+  unsigned char x;
+};
+
+union U { struct A a; struct B b; };
+
+void check(union U *u, union U *v) {
+  *u = *v;
+}