Add a little more testing for default arguments of constructors in a class template

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79989 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaTemplate/default-expr-arguments.cpp b/test/SemaTemplate/default-expr-arguments.cpp
index 7c813c9..7e705b0 100644
--- a/test/SemaTemplate/default-expr-arguments.cpp
+++ b/test/SemaTemplate/default-expr-arguments.cpp
@@ -23,8 +23,11 @@
 	F(T t = 10);
 };
 
+struct FD : F<int> { };
+
 void g2() {
 	F<int> f;
+  FD fd;
 }
 
 template<typename T> struct G {