Check whether a typed array was neutered before writing to it

Check whether a typed array was neutered before writing to it

As demanded by the spec.

BUG=chromium:516251
R=jkummerow@chromium.org
LOG=n

Committed: https://crrev.com/ed3e5d1f3a57ad1756b4276235e1a72033f2f16f
Cr-Commit-Position: refs/heads/master@{#29981}

[Jakob Kummerow, 2015-08-03 16:06:00]

LGTM. I can haz regression test?

[jochen (gone - plz use gerrit), 2015-08-03 16:07:21]

On 2015/08/03 at 16:06:00, jkummerow wrote:
> LGTM. I can haz regression test?

i tried, but it's more or less invisible. the array buffer is neutered one way
or another, we don't have a good way to catch the write :-/

asan would probably trip over it, so I could just check that in?

[Jakob Kummerow, 2015-08-03 16:08:25]

On 2015/08/03 16:07:21, jochen wrote:
> On 2015/08/03 at 16:06:00, jkummerow wrote:
> > LGTM. I can haz regression test?
> 
> i tried, but it's more or less invisible. the array buffer is neutered one way
> or another, we don't have a good way to catch the write :-/

Hm, good point. OK then, let's just land the fix.

[jochen (gone - plz use gerrit), 2015-08-03 16:09:20]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2015-08-03 16:09:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1261453004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1261453004/20001

[commit-bot: I haz the power, 2015-08-03 16:11:22]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-03 16:11:38]

Patchset 2 (id:??) landed as
https://crrev.com/ed3e5d1f3a57ad1756b4276235e1a72033f2f16f
Cr-Commit-Position: refs/heads/master@{#29981}