1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/pr54318.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/pr54318.C
new file mode 100644
index 0000000..4dac31b
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/pr54318.C
@@ -0,0 +1,24 @@
+// PR c++/54318
+// { dg-do compile { target c++11 } }
+
+template <typename T>
+struct wrapped
+{
+  typedef T type;
+};
+
+template <typename T>
+typename T::type unwrap1(T);
+
+int unwrap(int);
+
+template <typename T>
+auto unwrap(T t) -> decltype(unwrap(unwrap1(t)))
+{
+  return unwrap(unwrap1(t));
+}
+
+int main()
+{
+  unwrap(wrapped<wrapped<int>>());
+}