InstanceOfStub incorrectly interprets the hole as a prototype.

InstanceOfStub incorrectly interprets the hole as a prototype.

Repair this to match what the runtime correctly does, by first checking if the
function is a constructor before we access the prototype.

R=verwaest@chromium.org
BUG=

Committed: https://crrev.com/2aa070be4fd2960df98905b254f12ed801ef26cd
Cr-Commit-Position: refs/heads/master@{#34863}

[mvstanton, 2016-03-17 13:07:55]

Hi Toon,
Here is a CL for the issue we discussed, thx for the look!
--Mike

[Toon Verwaest, 2016-03-17 14:06:31]

lgtm, awesome :)

[mvstanton, 2016-03-17 14:25:04]

The CQ bit was checked by mvstanton@chromium.org

[commit-bot: I haz the power, 2016-03-17 14:25:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1810953002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1810953002/1

[commit-bot: I haz the power, 2016-03-17 14:30:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-17 14:32:31]

Description was changed from

==========
InstanceOfStub incorrectly interprets the hole as a prototype.

Repair this to match what the runtime correctly does, by first checking if the
function is a constructor before we access the prototype.

R=verwaest@chromium.org
BUG=
==========

to

==========
InstanceOfStub incorrectly interprets the hole as a prototype.

Repair this to match what the runtime correctly does, by first checking if the
function is a constructor before we access the prototype.

R=verwaest@chromium.org
BUG=

Committed: https://crrev.com/2aa070be4fd2960df98905b254f12ed801ef26cd
Cr-Commit-Position: refs/heads/master@{#34863}
==========

[commit-bot: I haz the power, 2016-03-17 14:32:32]

Patchset 1 (id:??) landed as
https://crrev.com/2aa070be4fd2960df98905b254f12ed801ef26cd
Cr-Commit-Position: refs/heads/master@{#34863}