re PR c++/47068 ([C++0x] internal compiler error on decltype(~ expression))

	PR c++/47068
	* semantics.c (finish_id_expression): Don't note non-names
	as being used in the class.

From-SVN: r168309

gcc/cp/ChangeLog

+2010-12-28  Jason Merrill  <jason@redhat.com>
+
+	PR c++/47068
+	* semantics.c (finish_id_expression): Don't note non-names
+	as being used in the class.
+
 2010-12-23  Jason Merrill  <jason@redhat.com>
 
 	* parser.c (cp_parser_unary_expression): Remove redundant C++0x

gcc/cp/semantics.c

@@ -2797,7 +2797,8 @@ finish_id_expression (tree id_expression,
 	 the current class so that we can check later to see if
 	 the meaning would have been different after the class
 	 was entirely defined.  */
-      if (!scope && decl != error_mark_node)
+      if (!scope && decl != error_mark_node
+	  && TREE_CODE (id_expression) == IDENTIFIER_NODE)
 	maybe_note_name_used_in_class (id_expression, decl);
 
       /* Disallow uses of local variables from containing functions, except

gcc/testsuite/ChangeLog

+2010-12-28  Jason Merrill  <jason@redhat.com>
+
+	PR c++/47068
+	* g++.dg/cpp0x/decltype24.C: New.
+
 2010-12-28  Nicola Pero  <nicola.pero@meta-innovation.com>
 
 	PR objc/47076

gcc/testsuite/g++.dg/cpp0x/decltype24.C

+// PR c++/47068
+// { dg-options -std=c++0x }
+
+template <class T> struct broken {
+  int member;
+  typedef decltype(~ member) gcc_crashes_here;
+};