re PR c++/12397 (two-stage name lookup argument shadowed by global type)

	PR c++/12397
	* typeck.c (finish_class_member_access_expr): Don't tree
	IDENTIFIER_NODEs as non-dependent expressions.

	PR c++/12397
	* g++.dg/template/lookup3.C: New test.

From-SVN: r74949

gcc/cp/ChangeLog

+2003-12-22  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/12397
+	* typeck.c (finish_class_member_access_expr): Don't tree
+	IDENTIFIER_NODEs as non-dependent expressions.
+
 2003-12-22  Andrew Pinski  <pinskia@physics.uc.edu>
 
 	PR c++/5050

gcc/cp/typeck.c

@@ -1809,6 +1809,9 @@ finish_class_member_access_expr (tree object, tree name)
     {
       if (/* If OBJECT_TYPE is dependent, so is OBJECT.NAME.  */
 	  dependent_type_p (object_type)
+	  /* If NAME is just an IDENTIFIER_NODE, then the expression
+	     is dependent.  */
+	  || TREE_CODE (object) == IDENTIFIER_NODE
 	  /* If NAME is "f<args>", where either 'f' or 'args' is
 	     dependent, then the expression is dependent.  */
 	  || (TREE_CODE (name) == TEMPLATE_ID_EXPR

gcc/testsuite/ChangeLog

+2003-12-22  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/12397
+	* g++.dg/template/lookup3.C: New test.
+
 2003-12-22  Andrew Pinski  <pinskia@physics.uc.edu>
 
 	* g++.dg/template/recurse1.C: New test

gcc/testsuite/g++.dg/template/lookup3.C

+// PR c++/12397
+
+struct foo { }; 
+ 
+template <typename T> struct bar 
+{ 
+  bar(){} 
+  int i; 
+  bar (const bar<T>& foo) : i (foo.i) {} 
+}; 
+ 
+int main() 
+{ 
+  bar<int> b1; 
+  bar<int> b2(b1); 
+}