re PR c++/14476 (ICE after error about enum not being defined when using it as a bit field)

	PR c++/14476
	* decl.c (xref_tag): Do not create dummy ENUMERAL_TYPEs.

	PR c++/14476
	* g++.dg/lookup/enum1.C: New test.

From-SVN: r79312

gcc/cp/decl.c

@@ -9392,25 +9392,7 @@ xref_tag (enum tag_types tag_code, tree name,
       if (code == ENUMERAL_TYPE)
 	{
 	  error ("use of enum `%#D' without previous declaration", name);
-
-	  t = make_node (ENUMERAL_TYPE);
-
-	  /* Give the type a default layout like unsigned int
-	     to avoid crashing if it does not get defined.  */
-	  TYPE_MODE (t) = TYPE_MODE (unsigned_type_node);
-	  TYPE_ALIGN (t) = TYPE_ALIGN (unsigned_type_node);
-	  TYPE_USER_ALIGN (t) = 0;
-	  TREE_UNSIGNED (t) = 1;
-	  TYPE_PRECISION (t) = TYPE_PRECISION (unsigned_type_node);
-	  TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (unsigned_type_node);
-	  TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (unsigned_type_node);
-
-	  /* Enable us to recognize when a type is created in class context.
-	     To do nested classes correctly, this should probably be cleared
-	     out when we leave this classes scope.  Currently this in only
-	     done in `start_enum'.  */
-
-	  pushtag (name, t, globalize);
+	  POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
 	}
       else
 	{

gcc/testsuite/ChangeLog

+2004-03-11  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/14476
+	* g++.dg/lookup/enum1.C: New test.
+
 2004-03-10  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/14510

gcc/testsuite/g++.dg/lookup/enum1.C

+// PR c++/14476
+
+struct tree_common {
+  enum tree_code code : 8; // { dg-error "" }
+};