Improving error messages when adding properties to non JSObject receiver in

test/webkit/fast/js/Object-defineProperty-expected.txt

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
@@ skipping 120 matching lines @@
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:function(){return 13;}}); o.foo = 42; o.result; is 42
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo is undefined
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {get:undefined}); o.foo = 42; o.result; is 42
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo is 42
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:function(){this.result = 13;}}); o.foo = 42; o.result; is 13
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo is 42
 PASS 'use strict'; var o = Object.defineProperty(Object.defineProperty({foo:1}, 'foo', {get:function(){return 42;}, set:function(x){this.result = x;}}), 'foo', {set:undefined}); o.foo = 42; o.result; threw exception TypeError: Cannot set property foo of #<Object> which has only a getter.
 PASS 0 in Object.prototype is true
 PASS '0' in Object.prototype is true
 PASS var o = {}; o.readOnly = false; o.readOnly is true
-PASS 'use strict'; var o = {}; o.readOnly = false; o.readOnly threw exception TypeError: Cannot assign to read only property 'readOnly' of #<Object>.
+PASS 'use strict'; var o = {}; o.readOnly = false; o.readOnly threw exception TypeError: Cannot assign to read only property 'readOnly' of object '#<Object>'.
 PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false}), 'foo').writable is false
 PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false, writable: false}), 'foo').writable is false
 PASS Object.getOwnPropertyDescriptor(Object.defineProperty(Object.defineProperty({}, 'foo', {get: function() { return false; }, configurable: true}), 'foo', {value:false, writable: true}), 'foo').writable is true
 PASS var a = Object.defineProperty([], 'length', {writable: false}); a[0] = 42; 0 in a; is false
-PASS 'use strict'; var a = Object.defineProperty([], 'length', {writable: false}); a[0] = 42; 0 in a; threw exception TypeError: Cannot assign to read only property 'length' of [object Array].
+PASS 'use strict'; var a = Object.defineProperty([], 'length', {writable: false}); a[0] = 42; 0 in a; threw exception TypeError: Cannot assign to read only property 'length' of object '[object Array]'.
 PASS var a = Object.defineProperty([42], '0', {writable: false}); a[0] = false; a[0]; is 42
-PASS 'use strict'; var a = Object.defineProperty([42], '0', {writable: false}); a[0] = false; a[0]; threw exception TypeError: Cannot assign to read only property '0' of [object Array].
+PASS 'use strict'; var a = Object.defineProperty([42], '0', {writable: false}); a[0] = false; a[0]; threw exception TypeError: Cannot assign to read only property '0' of object '[object Array]'.
 PASS var a = Object.defineProperty([], '0', {set: undefined}); a[0] = 42; a[0]; is undefined.
 PASS 'use strict'; var a = Object.defineProperty([], '0', {set: undefined}); a[0] = 42; a[0]; threw exception TypeError: Cannot set property 0 of [object Array] which has only a getter.
 PASS anObj.slot1 is "foo"
 PASS anObj.slot2 is "bar"
 PASS anObj.propertyIsEnumerable('slot1') is true
 PASS anObj.propertyIsEnumerable('slot2') is false
 PASS anObj.slot4 is "goo"
 PASS anObj.slot5 is 123
 PASS anObj._Slot5 is 123
 PASS Object.getOwnPropertyDescriptor(anObj, 'slot5') is undefined.
 PASS anObj.slot5 is 456
 PASS anObj._Slot5 is 123
 PASS Object.getOwnPropertyDescriptor(anObj, 'slot5').value is 456
 PASS anObj.slot1 is "foo"
 PASS anObj.slot2 is "bar"
 PASS anObj.propertyIsEnumerable('slot1') is true
 PASS anObj.propertyIsEnumerable('slot2') is false
 PASS anObj.slot4 is "goo"
 PASS anObj.slot5 is 123
 PASS anObj._Slot5 is 123
 PASS Object.getOwnPropertyDescriptor(anObj, 'slot5') is undefined.
 PASS anObj.slot5 is 456
 PASS anObj._Slot5 is 123
 PASS Object.getOwnPropertyDescriptor(anObj, 'slot5').value is 456
 PASS successfullyParsed is true
 
 TEST COMPLETE