re PR c++/47003 (ice in stabilize_expr)

	PR c++/47003
	* tree.c (stabilize_expr): Really stabilize scalar glvalues.

From-SVN: r168180

gcc/cp/ChangeLog

+2010-12-22  Jason Merrill  <jason@redhat.com>
+
+	PR c++/47003
+	* tree.c (stabilize_expr): Really stabilize scalar glvalues.
+
 2010-12-22  Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
 
 	* parser.c (cp_parser_unary_expression): Call pedwarn for alignof

gcc/cp/tree.c

@@ -3058,9 +3058,7 @@ stabilize_expr (tree exp, tree* initp)
 
   if (!TREE_SIDE_EFFECTS (exp))
     init_expr = NULL_TREE;
-  /* There are no expressions with REFERENCE_TYPE, but there can be call
-     arguments with such a type; just treat it as a pointer.  */
-  else if (TREE_CODE (TREE_TYPE (exp)) == REFERENCE_TYPE
+  else if (!TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (exp))
 	   || !lvalue_or_rvalue_with_address_p (exp))
     {
       init_expr = get_target_expr (exp);

gcc/testsuite/ChangeLog

+2010-12-22  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/init/volatile2.C: New.
+
 2010-12-22  Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
 
 	* g++.dg/cpp0x/alignof2.C: New.

gcc/testsuite/g++.dg/init/volatile2.C

+// PR c++/47003
+
+struct A
+{
+  A(int);
+};
+
+volatile int i;
+
+int main()
+{
+  A *q = new A (i);
+}