698899 - TI: "Assertion failure: type->canProvideEmptyShape(clasp),"

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Attachment: stack

o = evalcx("lazy").__proto__
gc()
try {
    o.watch()
} catch (e) {}
o.constructor()

asserts js debug shell on JM changeset f951e9151626 with -n at Assertion failure: type->canProvideEmptyShape(clasp),

Related to bug 698150 ?

autoBisect shows this is probably related to the following changeset:

The first bad revision is:
changeset:   78127:40f829990c82
user:        Brian Hackett
date:        Fri Oct 07 20:09:09 2011 -0700
summary:     Move JSObject::newType to a hashtable, bug 684410.

Comment 1

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

This was likely fixed by bug 684507.

autoBisect shows this is probably related to the following changeset:

The first good revision is:
changeset:   79618:3e9445901e8b
user:        Brian Hackett
date:        Wed Nov 02 13:34:19 2011 -0700
summary:     Remove JSObject::isNewborn, refactor object creation code, bug 684507.

Comment 2

[Christian Holler (:decoder)]

Automatically extracted testcase for this bug was committed:

https://hg.mozilla.org/mozilla-central/rev/efaf8960a929