re PR c++/5655 (Member redeclared within its class definition with a different…

re PR c++/5655 (Member redeclared within its class definition with a different access specifier is not rejected)

	PR c++/5655
	* parser.c (cp_parser_check_access_in_redeclaration): New function.
	(cp_parser_member_declaration): Use it.
	(cp_parser_template_declaration_after_export): Likewise.

	* g++.dg/parse/access7.C: New test.
	* g++.old-deja/g++.brendan/crash56.C: Fix redeclaration error.

From-SVN: r71771

gcc/cp/ChangeLog

+2003-09-25  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/5655
+	* parser.c (cp_parser_check_access_in_redeclaration): New function.
+	(cp_parser_member_declaration): Use it.
+	(cp_parser_template_declaration_after_export): Likewise.
+
 2003-09-22  Gabriel Dos Reis  <gcc@integrable-solutions.net>
 
 	* cp-tree.h (scope_kind): Add new enumerator.
@@ -706,7 +713,7 @@
 	(do_friend): Adjust add_friend call.
 	* decl.c (grokdeclarator): Adjust make_friend_class call.
 	* parser.c (cp_parser_member_declaration): Likewise.
-	(cp_parser_template_declaration_after_exp): Likewise.
+	(cp_parser_template_declaration_after_export): Likewise.
 	* pt.c (instantiate_class_template): Adjust make_friend_class
 	and add_friend call.
 	* cp-tree.h (make_friend_class): Adjust declaration.

gcc/cp/parser.c

@@ -1651,6 +1651,8 @@ static enum tag_types cp_parser_token_is_class_key
   (cp_token *);
 static void cp_parser_check_class_key
   (enum tag_types, tree type);
+static void cp_parser_check_access_in_redeclaration
+  (tree type);
 static bool cp_parser_optional_template_keyword
   (cp_parser *);
 static void cp_parser_pre_parsed_nested_name_specifier 
@@ -11870,6 +11872,8 @@ cp_parser_member_declaration (cp_parser* parser)
 	      /* Add it to the class.  */
 	      finish_member_declaration (decl);
 	    }
+	  else
+	    cp_parser_check_access_in_redeclaration (TYPE_NAME (type));
 	}
     }
   else
@@ -13657,7 +13661,12 @@ cp_parser_template_declaration_after_export (cp_parser* parser, bool member_p)
       /* If this is a member template declaration, let the front
 	 end know.  */
       if (member_p && !friend_p && decl)
-	decl = finish_member_template_decl (decl);
+	{
+	  if (TREE_CODE (decl) == TYPE_DECL)
+	    cp_parser_check_access_in_redeclaration (decl);
+
+	  decl = finish_member_template_decl (decl);
+	}
       else if (friend_p && decl && TREE_CODE (decl) == TYPE_DECL)
 	make_friend_class (current_class_type, TREE_TYPE (decl),
 			   /*complain=*/true);
@@ -14265,6 +14274,23 @@ cp_parser_check_class_key (enum tag_types class_key, tree type)
 	     type);
 }
 			   
+/* Issue an error message if DECL is redeclared with differnt
+   access than its original declaration [class.access.spec/3].
+   This applies to nested classes and nested class templates.
+   [class.mem/1].  */
+
+static void cp_parser_check_access_in_redeclaration (tree decl)
+{
+  if (!CLASS_TYPE_P (TREE_TYPE (decl)))
+    return;
+
+  if ((TREE_PRIVATE (decl)
+       != (current_access_specifier == access_private_node))
+      || (TREE_PROTECTED (decl)
+	  != (current_access_specifier == access_protected_node)))
+    error ("%D redeclared with different access", decl);
+}
+
 /* Look for the `template' keyword, as a syntactic disambiguator.
    Return TRUE iff it is present, in which case it will be 
    consumed.  */

gcc/testsuite/ChangeLog

+2003-09-25  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/5655
+	* g++.dg/parse/access7.C: New test.
+	* g++.old-deja/g++.brendan/crash56.C: Fix redeclaration error.
+
 2003-09-24  Ziemowit Laski  <zlaski@apple.com>
 
 	MERGE OF objc-improvements-branch into MAINLINE:

gcc/testsuite/g++.dg/parse/access7.C

+// { dg-do compile }
+
+// Origin: Paolo Carlini <pcarlini@unitus.it>
+
+// PR c++/5655: Access of member redeclaration.
+
+struct S {
+ class A;
+ template <class T> class B;
+private:
+ class A {};			// { dg-error "different access" }
+ template <class T> class B {};	// { dg-error "different access" }
+};

gcc/testsuite/g++.old-deja/g++.brendan/crash56.C

@@ -5,6 +5,8 @@
 const bool FALSE = 0;
 const bool TRUE = 1;
 class ListDProto {
+protected:
+    class link;
 public:
     ListDProto();
     ListDProto(const ListDProto&);
@@ -15,7 +17,6 @@ public:
     void clear();
     void remove_head();
     void remove_tail();
-    class link;
     class Vix {
     public:
 	Vix();