re PR c++/2294 (using declaration confusion)

        PR c++/2294
        * g++.dg/lookup/using9.c: New test.

From-SVN: r73621

gcc/testsuite/ChangeLog

+2003-11-14  Giovanni Bajo  <giovannibajo@libero.it>
+
+        PR c++/2294
+        * g++.dg/lookup/using9.c: New test.
+
 2003-11-14  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/12762

gcc/testsuite/g++.dg/lookup/using9.C

+// { dg-do compile }
+// Origin: C++ Standard Draft (7.3.3/12)
+// PR c++/2294: using declarations should not conflict, but only cause
+//  an ambiguous overload set to be created.
+
+namespace B {
+  void f(int);     // { dg-error "note" }
+  void f(double);  // { dg-error "note" }
+}
+
+namespace C {
+  void f(int);     // { dg-error "note" }
+  void f(double);  // { dg-error "note" }
+  void f(char);    // { dg-error "note" }
+}
+
+void h()
+{
+  using B::f;
+  using C::f;
+  f('h');
+  f(1);         // { dg-error "ambiguous" }
+  void f(int);  // { dg-error "previous using declaration" }
+}
+
+void m()
+{
+  void f(int);
+  using B::f;   // { dg-error "already declared" }
+}