re PR c++/51319 (Eigen3 enums not accepted)

gcc/testsuite/ChangeLog

2011-12-05  Fabien Chene  <fabien@gcc.gnu.org>

	PR c++/51319
	* g++.dg/lookup/using50.C: New.
	* g++.dg/lookup/using51.C: New.

gcc/cp/ChangeLog

2011-12-05  Fabien Chene  <fabien@gcc.gnu.org>

	PR c++/51319
	* semantics.c (finish_id_expression): Strip using declarations
	early in the function.

From-SVN: r182029

gcc/cp/semantics.c

@@ -2893,6 +2893,8 @@ finish_id_expression (tree id_expression,
 		      const char **error_msg,
 		      location_t location)
 {
+  decl = strip_using_decl (decl);
+
   /* Initialize the output parameters.  */
   *idk = CP_ID_KIND_NONE;
   *error_msg = NULL;

gcc/testsuite/ChangeLog

+2011-12-05  Fabien Chêne  <fabien@gcc.gnu.org>
+
+	PR c++/51319
+	* g++.dg/lookup/using50.C: New.
+	* g++.dg/lookup/using51.C: New.
+
 2011-12-05  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/51396

gcc/testsuite/g++.dg/lookup/using50.C

+// PR c++/51319
+// { dg-do compile }
+
+template<int> struct X {};
+
+struct Base 
+{
+    enum { a = 1 };
+};
+
+struct Der : Base 
+{
+    using Base::a;
+    typedef X<(int)a> Y;
+};

gcc/testsuite/g++.dg/lookup/using51.C

+// PR c++/51382
+// { dg-do compile }
+
+template< int Value >
+struct Base
+{
+   enum { b_e = Value };
+};
+
+template< typename Type >
+struct Derived : Type
+{
+   Type::b_e;
+   enum { d_e = b_e };
+};
+
+int v = (int)Derived< Base< 3 > >::d_e;