pt.c (instantiate_class_template): Push to class's scope before tsubsting base.

cp:
	* pt.c (instantiate_class_template): Push to class's scope before
	tsubsting base.
testsuite:
	* g++.dg/template/scope2.C: New test.
	* g++.dg/template/error2.C: Correct dg-error

From-SVN: r70540

gcc/cp/ChangeLog

+2003-08-18  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* pt.c (instantiate_class_template): Push to class's scope before
+	tsubsting base.
+
 Sun Aug 17 10:05:38 CEST 2003  Jan Hubicka  <jh@suse.cz>
 
 	PR C++/11702

gcc/cp/pt.c

@@ -5173,8 +5173,14 @@ instantiate_class_template (tree type)
       tree base_list = NULL_TREE;
       tree pbases = BINFO_BASETYPES (pbinfo);
       tree paccesses = BINFO_BASEACCESSES (pbinfo);
+      tree context = TYPE_CONTEXT (type);
       int i;
 
+      /* We must enter the scope containing the type, as that is where
+	 the accessibility of types named in dependent bases are
+	 looked up from.  */
+      push_scope (context ? context : global_namespace);
+  
       /* Substitute into each of the bases to determine the actual
 	 basetypes.  */
       for (i = 0; i < TREE_VEC_LENGTH (pbases); ++i)
@@ -5201,6 +5207,8 @@ instantiate_class_template (tree type)
       /* Now call xref_basetypes to set up all the base-class
 	 information.  */
       xref_basetypes (type, base_list);
+
+      pop_scope (context ? context : global_namespace);
     }
 
   /* Now that our base classes are set up, enter the scope of the

gcc/testsuite/ChangeLog

+2003-08-18  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.dg/template/scope2.C: New test.
+	* g++.dg/template/error2.C: Correct dg-error
+
 2003-08-18  Richard Sandiford  <rsandifo@redhat.com>
 
 	* gcc.c-torture/compile/mipscop*.c: Turn into compile-only tests.

gcc/testsuite/g++.dg/template/error2.C

@@ -14,7 +14,7 @@ template<class T >
 struct Derived
 {
   class Nested : public X<T>
-  { // { dg-error "instantiated"
+  { // { dg-error "instantiated" "" }
   };
   
   Nested m; // { dg-error "instantiated" "" }

gcc/testsuite/g++.dg/template/scope2.C

+// { dg-do compile }
+
+// Copyright (C) 2003 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 15 Aug 2003 <nathan@codesourcery.com>
+
+// checked instantiated bases in wrong scope.
+
+class Helper {};
+
+template<class T> struct X { };
+
+template<class T> class Base
+{
+  protected:
+  typedef Helper H;
+};
+
+template<class T >
+struct Derived : Base<T>
+{
+  typedef Base<T> Parent;
+  typedef typename Parent::H H;
+  
+  class Nested : public X<H> {};
+  
+  Nested m;
+  
+  void Foo ();
+};
+
+void Foo (Derived<char> &x)
+{
+  x.Foo ();
+}