1 files changed, 27 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/implicit-member-functions.cpp b/clang/test/SemaCXX/implicit-member-functions.cpp
index 40a61e47fd3..2112188ae67 100644
--- a/clang/test/SemaCXX/implicit-member-functions.cpp
+++ b/clang/test/SemaCXX/implicit-member-functions.cpp
@@ -12,3 +12,30 @@ C& C::operator=(const C&) { return *this; } // expected-error {{definition of im
 struct D { }; // expected-note {{previous implicit declaration is here}}
 D::~D() { } // expected-error {{definition of implicitly declared destructor}}
 
+// Make sure that the special member functions are introduced for
+// name-lookup purposes and overload with user-declared
+// constructors and assignment operators.
+namespace PR6570 {
+  class A { };
+
+  class B {
+  public:
+    B() {}
+
+    B(const A& a) {
+      operator = (CONST);
+      operator = (a);
+    }
+
+    B& operator = (const A& a) {
+      return *this;
+    }
+
+    void f(const A &a) {
+      B b(a);
+    };
+
+    static const B CONST;
+  };
+
+}