1 files changed, 21 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae48.C b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae48.C
new file mode 100644
index 0000000..ba728d9
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/cpp0x/sfinae48.C
@@ -0,0 +1,21 @@
+// PR c++/57874
+// { dg-do compile { target c++11 } }
+
+namespace NX
+{
+  struct X {};
+  void foo(X) {}
+}
+
+namespace NY
+{
+  struct Y {};
+}
+
+template<class T>
+auto ADLfoo(T&&) -> decltype((foo(T{}), short()));
+
+char ADLfoo(...);
+
+static_assert(sizeof(ADLfoo(NY::Y{})) == 1, "");
+static_assert(sizeof(ADLfoo(NX::X{})) == 2, "");