Add support for derived class special members hiding functions brought in from

a base class via a using-declaration. If a class has a using-declaration
declaring either a constructor or an assignment operator, eagerly declare its
special members in case they need to displace a shadow declaration from a
using-declaration.

llvm-svn: 269398

1 files changed, 32 insertions, 0 deletions

diff --git a/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
index cc28bf6c28c..ce43720cb2d 100644
--- a/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
+++ b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p12.cpp
@@ -1,3 +1,5 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
 // RUN: %clang_cc1 -fsyntax-only -verify %s
 
 // C++03 [namespace.udecl]p12:
@@ -161,3 +163,33 @@ namespace test4 {
     d.bar<int>(3); // expected-error {{'bar' is a protected member}}
   }
 }
+
+namespace test5 {
+  struct Derived;
+  struct Base {
+    void operator=(const Derived&);
+  };
+  struct Derived : Base {
+    // Hidden by implicit derived class operator.
+    using Base::operator=;
+  };
+  void f(Derived d) {
+    d = d;
+  }
+}
+
+#if __cplusplus >= 201103L
+namespace test6 {
+  struct Derived;
+  struct Base {
+    void operator=(Derived&&);
+  };
+  struct Derived : Base {
+    // Hidden by implicit derived class operator.
+    using Base::operator=;
+  };
+  void f(Derived d) {
+    d = Derived();
+  }
+}
+#endif