Remove cv qualifiers from member pointers in the __member_pointer_traits test. This was causing a const-qualified bind result to malfunction. This was a recent regression due to the new use of __member_pointer_traits in restricting the __invokable and __invoke_of tests.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@181935 91177308-0d34-0410-b5e6-96231b3b80d8

include/type_traits

@@ -1653,7 +1653,7 @@ struct __member_pointer_traits_imp<_Rp _Class::*, false, true>
 
 template <class _MP>
 struct __member_pointer_traits
-    : public __member_pointer_traits_imp<_MP,
+    : public __member_pointer_traits_imp<typename remove_cv<_MP>::type,
                     is_member_function_pointer<_MP>::value,
                     is_member_object_pointer<_MP>::value>
 {

test/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_lvalue.pass.cpp

@@ -260,6 +260,24 @@ test_void_2()
     }
 }
 
+struct TFENode
+{
+    bool foo(unsigned long long) const
+    {
+        return true;
+    }
+};
+
+void
+test3()
+{
+    using namespace std;
+    using namespace std::placeholders;
+    const auto f = bind(&TFENode::foo, _1, 0UL);
+    const TFENode n = TFENode{};
+    bool b = f(n);
+}
+
 int main()
 {
     test_void_1();