662044 - TI: Assertion failure: obj->nativeContains(*shape), at jsinterp.cpp:4355

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on TI revision a638ecbe6843 (run with -j -m -n -a), tested on 64 bit:


eval("var OBJ = new MyObject(true); OBJ.valueOf()") 
function MyObject( value ) {
  this.valueOf = new Function( "return this.value" );
}
eval("\
var VERSION = \"ECMA_1\";\
var DATE1 = new Date();\
var MYOB1 = new MyObject( DATE1 );\
function MyProtoValuelessObject() {}\
function Function() {\
  __proto__[MyProtoValuelessObject] = VERSION;\
}");

Comment 1

[Brian Hackett [Laid off!]]

obj->rollbackProperties() (called when we invalidate the definite property information on an object while it is in the middle of being initialized) was not updating the shape number after fixing the last property of the object.

http://hg.mozilla.org/projects/jaegermonkey/rev/2ebc9b25756b

Comment 2

[Christian Holler (:decoder)]

A testcase for this bug was automatically identified at js/src/jit-test/tests/basic/bug662044.js.