Comment #8 on issue 4388 by [email protected]: TurboFan AST graph
builder TDZ check for let assignment is borked
https://code.google.com/p/v8/issues/detail?id=4388#c8
The following revision refers to this bug:
https://chromium.googlesource.com/v8/v8.git/+/cbd4f5aa98eb82f5ef68c7163f2fd4f27b958e67
commit cbd4f5aa98eb82f5ef68c7163f2fd4f27b958e67
Author: mstarzinger <[email protected]>
Date: Wed Aug 26 09:52:59 2015
[turbofan] Fix broken dynamic TDZ check for let and const.
This fixes broken dynamic hole-checks for the temporal dead zone of
non-initializing assignments to {let} and {const} declared variables.
Also note that this exemplifies a case where the dynamic check for such
assignments to {let} declared variables can no longer be elided as the
comment suggested.
[email protected]
TEST=mjsunit/regress/regress-4388
BUG=v8:4388
LOG=n
Review URL: https://codereview.chromium.org/1318693002
Cr-Commit-Position: refs/heads/master@{#30375}
[modify]
http://crrev.com/cbd4f5aa98eb82f5ef68c7163f2fd4f27b958e67/src/compiler/ast-graph-builder.cc
[add]
http://crrev.com/cbd4f5aa98eb82f5ef68c7163f2fd4f27b958e67/test/mjsunit/regress/regress-4388.js
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