1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/packed-union.c b/test/CodeGen/packed-union.c
new file mode 100644
index 000000000000..d11d3a490234
--- /dev/null
+++ b/test/CodeGen/packed-union.c
@@ -0,0 +1,16 @@
+// RUN: clang-cc -triple x86_64-apple-darwin10 -emit-llvm %s -o %t &&
+
+// RUN: grep "struct._attrs = type <{ i32, i8 }>" %t &&
+typedef struct _attrs {
+        unsigned file_attributes;
+        unsigned char filename_length;
+} __attribute__((__packed__)) attrs;
+
+// RUN: grep "union._attr_union = type <{ i32, i8 }>" %t
+typedef union _attr_union {
+  attrs file_attrs;
+  unsigned owner_id;
+} __attribute__((__packed__)) attr_union;
+
+attr_union u;
+