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.

From-SVN: r74172

gcc/cp/ChangeLog

+2003-12-02  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
+
+	PR c++/12573
+	* pt.c (value_dependent_expression_p): Handle COMPONENT_REFs by
+	looking into them recursively.
+
 2003-12-02  Richard Henderson  <rth@redhat.com>
 
 	* name-lookup.h (struct cp_binding_level): Use ENUM_BITFIELD.

gcc/cp/pt.c

@@ -11713,6 +11713,9 @@ 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))))