Comment #2 on issue 4284 by [email protected]: Sloppy let binding and
eval does not enforce TDZ
https://code.google.com/p/v8/issues/detail?id=4284#c2
The following revision refers to this bug:
https://chromium.googlesource.com/v8/v8.git/+/a73338ba9e22c2ac0e2213995849d61a521b8cd0
commit a73338ba9e22c2ac0e2213995849d61a521b8cd0
Author: arv <[email protected]>
Date: Fri Jul 10 16:20:34 2015
[es6] Enforce TDZ checks for let/const in StoreLookupSlot
With --harmony-sloppy we can get to a runtime store in the presence of
an eval. We therefor need to check that the value is not the hole which
is used to enforce TDZ.
BUG=v8:4284
LOG=N
[email protected], [email protected]
Review URL: https://codereview.chromium.org/1214733013
Cr-Commit-Position: refs/heads/master@{#29577}
[modify]
http://crrev.com/a73338ba9e22c2ac0e2213995849d61a521b8cd0/src/runtime/runtime-scopes.cc
[modify]
http://crrev.com/a73338ba9e22c2ac0e2213995849d61a521b8cd0/test/mjsunit/es6/block-let-semantics.js
[modify]
http://crrev.com/a73338ba9e22c2ac0e2213995849d61a521b8cd0/test/mjsunit/harmony/block-let-semantics-sloppy.js
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