re PR c++/10712 (ICE in constructor_name_full, at cp/decl2.c:1255)

	PR c++/1255
	* class.c (handle_using_decl): Robustify.

	PR c++/1255
	* g++.dg/lookup/using3.C: New test.

From-SVN: r68118

gcc/cp/ChangeLog

 2003-06-17  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/1255
+	* class.c (handle_using_decl): Robustify.
+
 	PR c++/11105
 	* cp-tree.h (DECL_CONV_FN_TYPE): New method.
 	* mangle.c (struct globals): Remove internal_mangling_p.

gcc/cp/class.c

@@ -1108,6 +1108,9 @@ handle_using_decl (tree using_decl, tree t)
   tree flist = NULL_TREE;
   tree old_value;
 
+  if (ctype == error_mark_node)
+    return;
+
   binfo = lookup_base (t, ctype, ba_any, NULL);
   if (! binfo)
     {

gcc/testsuite/ChangeLog

 2003-06-17  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/1255
+	* g++.dg/lookup/using7.C: New test.
+	
+2003-06-17  Mark Mitchell  <mark@codesourcery.com>
+
 	PR c++/11105
 	* g++.dg/abi/conv1.C: Remove it.
 	* g++.dg/template/conv7.C: New test.

gcc/testsuite/g++.dg/lookup/using7.C

+template <typename T, bool=T::X> struct A
+{
+  int i;
+};
+
+template <typename T> struct B : A<T>
+{
+  using A<T>::i; // { dg-error "" } 
+};
+
+B<void> b; // { dg-error "" }