1 files changed, 23 insertions, 0 deletions
diff --git a/test/SemaCXX/pragma-pack.cpp b/test/SemaCXX/pragma-pack.cpp
index 1bc738b087a9..5c1d5c6c82af 100644
--- a/test/SemaCXX/pragma-pack.cpp
+++ b/test/SemaCXX/pragma-pack.cpp
@@ -32,3 +32,26 @@ struct Sub : virtual Base {
 int check[sizeof(Sub) == 13 ? 1 : -1];
 
 }
+
+namespace llvm_support_endian {
+
+template<typename, bool> struct X;
+
+#pragma pack(push)
+#pragma pack(1)
+template<typename T> struct X<T, true> {
+  T t;
+};
+#pragma pack(pop)
+
+#pragma pack(push)
+#pragma pack(2)
+template<> struct X<long double, true> {
+  long double c;
+};
+#pragma pack(pop)
+
+int check1[__alignof(X<int, true>) == 1 ? 1 : -1];
+int check2[__alignof(X<long double, true>) == 2 ? 1 : -1];
+
+}