pt.c (value_dependent_expression_p): Avoid using an uninitialized variable.

	* pt.c (value_dependent_expression_p) [NOEXCEPT_EXPR]: Avoid
	using an uninitialized variable.

From-SVN: r160300

gcc/cp/ChangeLog

 2010-06-04  Jason Merrill  <jason@redhat.com>
 
+	* pt.c (value_dependent_expression_p) [NOEXCEPT_EXPR]: Avoid
+	using an uninitialized variable.
+
 	* cxx-pretty-print.c (pp_cxx_unary_expression): Handle NOEXCEPT_EXPR.
 	(pp_cxx_expression): Likewise.
 

gcc/cp/pt.c

@@ -17596,9 +17596,14 @@ value_dependent_expression_p (tree expression)
         return true;
       else if (TYPE_P (expression))
 	return dependent_type_p (expression);
-    case NOEXCEPT_EXPR:
       return type_dependent_expression_p (expression);
 
+    case NOEXCEPT_EXPR:
+      expression = TREE_OPERAND (expression, 0);
+      /* FIXME why check value-dependency?  */
+      return (type_dependent_expression_p (expression)
+	      || value_dependent_expression_p (expression));
+
     case SCOPE_REF:
       return dependent_scope_ref_p (expression, value_dependent_expression_p);