re PR c++/14401 (Uninitialized reference error not reported.)

	PR c++/14401
	* class.c (check_field_decls): Complain about non-static data
	members of reference type in unions.  Propagate
	CLASSTYPE_REF_FIELDS_NEED_INIT and
	CLASSTYPE_READONLY_FIELDS_NEED_INIT from the types of non-static
	data members.
	* init.c (perform_member_init): Complain about mbmers with const
	type that are not explicitly initialized.

	PR c++/14401
	* g++.dg/init/ctor3.C: New test.
	* g++.dg/init/union1.C: New test.
	* g++.dg/ext/anon-struct4.C: New test.

From-SVN: r79158

1 files changed, 8 insertions, 16 deletions

diff --git a/gcc/cp/lex.c b/gcc/cp/lex.c
index 2239c76..66e45ed 100644
--- a/gcc/cp/lex.c
+++ b/gcc/cp/lex.c
@@ -627,26 +627,18 @@ unqualified_name_lookup_error (tree name)
       if (name != ansi_opname (ERROR_MARK))
 	error ("`%D' not defined", name);
     }
-  else if (current_function_decl == 0)
-    error ("`%D' was not declared in this scope", name);
   else
     {
-      if (IDENTIFIER_NAMESPACE_VALUE (name) != error_mark_node
-	  || IDENTIFIER_ERROR_LOCUS (name) != current_function_decl)
+      error ("`%D' was not declared in this scope", name);
+      /* Prevent repeated error messages by creating a VAR_DECL with
+	 this NAME in the innermost block scope.  */
+      if (current_function_decl)
 	{
-	  static int undeclared_variable_notice;
-
-	  error ("`%D' undeclared (first use this function)", name);
-
-	  if (! undeclared_variable_notice)
-	    {
-	      error ("(Each undeclared identifier is reported only once for each function it appears in.)");
-	      undeclared_variable_notice = 1;
-	    }
+	  tree decl;
+	  decl = build_decl (VAR_DECL, name, error_mark_node);
+	  DECL_CONTEXT (decl) = current_function_decl;
+	  push_local_binding (name, decl, 0);
 	}
-      /* Prevent repeated error messages.  */
-      SET_IDENTIFIER_NAMESPACE_VALUE (name, error_mark_node);
-      SET_IDENTIFIER_ERROR_LOCUS (name, current_function_decl);
     }
 
   return error_mark_node;