1 files changed, 91 insertions, 0 deletions
diff --git a/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p11.cpp b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p11.cpp
new file mode 100644
index 0000000..c7966ce
--- /dev/null
+++ b/clang/test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p11.cpp
@@ -0,0 +1,91 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+// C++03 [namespace.udecl]p11:
+//   If a function declaration in namespace scope or block scope has
+//   the same name and the same parameter types as a function
+//   introduced by a using-declaration, the program is
+//   ill-formed. [Note: two using-declarations may introduce functions
+//   with the same name and the same parameter types. If, for a call
+//   to an unqualified function name, function overload resolution
+//   selects the functions introduced by such using-declarations, the
+//   function call is ill-formed.
+
+namespace test0 {
+  namespace ns { void foo(); } // expected-note {{target of using declaration}}
+  int foo(void); // expected-note {{conflicting declaration}}
+  using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
+}
+
+namespace test1 {
+  namespace ns { void foo(); } // expected-note {{target of using declaration}}
+  using ns::foo; //expected-note {{using declaration}}
+  int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
+}
+
+namespace test2 {
+  namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
+  void test0() {
+    int foo(void); // expected-note {{conflicting declaration}}
+    using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
+  }
+
+  void test1() {
+    using ns::foo; //expected-note {{using declaration}}
+    int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
+  }
+}
+
+namespace test3 {
+  namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
+  class Test0 {
+    void test() {
+      int foo(void); // expected-note {{conflicting declaration}}
+      using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
+    }
+  };
+
+  class Test1 {
+    void test() {
+      using ns::foo; //expected-note {{using declaration}}
+      int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
+    }
+  };
+}
+
+namespace test4 {
+  namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
+  template <typename> class Test0 {
+    void test() {
+      int foo(void); // expected-note {{conflicting declaration}}
+      using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
+    }
+  };
+
+  template <typename> class Test1 {
+    void test() {
+      using ns::foo; //expected-note {{using declaration}}
+      int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
+    }
+  };
+}
+
+// FIXME: we should be able to diagnose both of these, but we can't.
+namespace test5 {
+  namespace ns { void foo(int); }
+  template <typename T> class Test0 {
+    void test() {
+      int foo(T);
+      using ns::foo;
+    }
+  };
+
+  template <typename T> class Test1 {
+    void test() {
+      using ns::foo;
+      int foo(T);
+    }
+  };
+
+  template class Test0<int>;
+  template class Test1<int>;
+}