re PR c++/10554 (ICE with illegal using declaration)

	PR c++/10554
	* decl2.c (do_class_using_decl): Check if operand 0 of SCOPE_REF
	is not NULL.

	* g++.dg/lookup/using5.C: New test.

From-SVN: r66329

gcc/cp/ChangeLog

+2003-05-01  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
+	PR c++/10554
+	* decl2.c (do_class_using_decl): Check if operand 0 of SCOPE_REF
+	is not NULL.
+
 2003-05-01  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* cp-tree.h (struct lang_id2): Remove.  Move fields from here...

gcc/cp/decl2.c

@@ -4458,6 +4458,7 @@ do_class_using_decl (tree decl)
   tree name, value;
 
   if (TREE_CODE (decl) != SCOPE_REF
+      || !TREE_OPERAND (decl, 0)
       || !TYPE_P (TREE_OPERAND (decl, 0)))
     {
       error ("using-declaration for non-member at class scope");

gcc/testsuite/ChangeLog

 2003-05-01  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
+	PR c++/10554
+	* g++.dg/lookup/using5.C: New test.
+
+2003-05-01  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
+
 	PR c++/8772
 	* g++.dg/template/ttp5.C: New test.
 

gcc/testsuite/g++.dg/lookup/using5.C

+// { dg-do compile }
+
+// Origin: Volker Reichelt <reichelt@igpm.rwth-aachen.de>
+
+// PR c++/10554: ICE for member using declaration with failed
+// scope name lookup.
+
+template <typename> struct A
+{
+    typedef A X;
+    void foo();
+};
+
+template <typename T> struct B : A<T>
+{
+    using X::foo; { dg-error "not a class-name|expected|non-member" }
+};