ES6: Make function name configurable

test/mjsunit/regress/regress-1530.js

Index: test/mjsunit/regress/regress-1530.js
diff --git a/test/mjsunit/regress/regress-1530.js b/test/mjsunit/regress/regress-1530.js
index 20d1f265c092b6b02bac7e9cd7d9608ffb8f8364..95cd679448ae5b177a9ec026e8282202da6ca8e8 100644
--- a/test/mjsunit/regress/regress-1530.js
+++ b/test/mjsunit/regress/regress-1530.js
@@ -80,8 +80,9 @@ assertFalse(Object.getOwnPropertyDescriptor(f, 'prototype').writable);
 assertThrows("'use strict'; f.prototype = {}");
 assertThrows("Object.defineProperty(f, 'prototype', { value: {} })");
 
-// Verify that non-writability of other properties is respected.
-assertThrows("Object.defineProperty(f, 'name', { value: {} })");
+// Verify that non-configurability of other properties is respected, but
+// non-writability is ignored by Object.defineProperty().
+assertDoesNotThrow("Object.defineProperty(f, 'name', { value: {} })");
 assertThrows("Object.defineProperty(f, 'length', { value: {} })");
 assertThrows("Object.defineProperty(f, 'caller', { value: {} })");
 assertThrows("Object.defineProperty(f, 'arguments', { value: {} })");