re PR c++/12573 (ICE (segfault) with Boost.Python)

	PR c++/12573
	* pt.c (value_dependent_expression_p): Handle COMPONENT_REFs by
	looking into them recursively. They can be there because of the
	new __offsetof__ extension.

From-SVN: r75546

gcc/cp/ChangeLog

+2004-01-08  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
+
+	PR c++/12573
+	* pt.c (value_dependent_expression_p): Handle COMPONENT_REFs by
+	looking into them recursively. They can be there because of the
+	new __offsetof__ extension.
+
 2004-01-07  Zack Weinberg  <zack@codesourcery.com>
 
 	* parser.c (cp_parser_save_member_function_body): Mark the

gcc/cp/pt.c

@@ -11671,6 +11671,9 @@ value_dependent_expression_p (tree expression)
     }
   if (TREE_CODE (expression) == SCOPE_REF)
     return dependent_scope_ref_p (expression, value_dependent_expression_p);
+  if (TREE_CODE (expression) == COMPONENT_REF)
+    return (value_dependent_expression_p (TREE_OPERAND (expression, 0))
+	    || value_dependent_expression_p (TREE_OPERAND (expression, 1)));
   /* A constant expression is value-dependent if any subexpression is
      value-dependent.  */
   if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (expression))))