1 files changed, 13 insertions, 0 deletions
diff --git a/test/CodeGen/union.c b/test/CodeGen/union.c
index 5c89e2d72a7e..730218210213 100644
--- a/test/CodeGen/union.c
+++ b/test/CodeGen/union.c
@@ -44,3 +44,16 @@ typedef union T0 { unsigned int : 0; } T0;
 T0 t0;
 
 union { int large_bitfield: 31; char c } u2;
+
+struct dt_t_s {
+  union {
+    long long u : 56;
+  } __attribute__((packed));
+};
+struct {
+  struct {
+    struct {
+      struct dt_t_s t;
+    };
+  };
+} a;