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littledan 85c2c8d847 Revert of change most cases of variable redeclaration from TypeError to SyntaxError (patchset #8 id:140001 of https://codereview.chromium.org/2048703002/ ) 
Reason for revert:
This is going to break the LayoutTest inspector-protocol/console/console-let-const-with-api.html as seen in https://build.chromium.org/p/tryserver.v8/builders/v8_linux_blink_rel/builds/2247 . Please run this test manually, using instructions at https://www.chromium.org/developers/testing/webkit-layout-tests , and fix on the Chrome side if needed before resubmitting this patch.

Original issue's description:
> change most cases of variable redeclaration from TypeError to SyntaxError.
>
> Code like `let a; eval("var a;");` should throw a SyntaxError, not a TypeError
> (this caused a test262 failure.). However, the code `eval("function NaN() {}");`
> should actually throw a TypeError. This patch changes most cases of
> redeclaration errors from TypeError to SyntaxError. See the test
> mjsunit/regress/redeclaration-error-types for a thorough analysis with spec
> references.
>
> The relevant sections of the spec are ES#sec-globaldeclarationinstantiation and
> ES#sec-evaldeclarationinstantiation
>
> BUG=v8:4955
> LOG=y
>
> Committed: https://crrev.com/2b787561763d0f7e8dab698652715a742cf78291
> Cr-Commit-Position: refs/heads/master@{#36940}

TBR=adamk@chromium.org,jwolfe@igalia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4955

Review-Url: https://codereview.chromium.org/2064793002
Cr-Commit-Position: refs/heads/master@{#36941}
2016-06-13 18:23:57 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides [gn] Rework debug configurations 2016-06-07 13:44:43 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [gn] Fix gyp/gn translation of use_snapshot 2016-06-07 08:02:47 +00:00
gypfiles [build] Use icu data file by default 2016-06-09 13:24:58 +00:00
include Move EmbedderHeapTracer::TracePrologue call to the beginning of full gc 2016-06-13 17:15:30 +00:00
infra Revert of [mb] Switch staging bot to gyp for testing purposes (patchset #1 id:1 of https://codereview.chromium.org/2056673002/ ) 2016-06-09 13:21:36 +00:00
samples [icu] Support loading data file from default location 2016-06-08 12:11:34 +00:00
src Revert of change most cases of variable redeclaration from TypeError to SyntaxError (patchset #8 id:140001 of https://codereview.chromium.org/2048703002/ ) 2016-06-13 18:23:57 +00:00
test Revert of change most cases of variable redeclaration from TypeError to SyntaxError (patchset #8 id:140001 of https://codereview.chromium.org/2048703002/ ) 2016-06-13 18:23:57 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils [gn] Move build to gypfiles 2016-04-29 10:11:11 +00:00
tools [turbolizer]: Fix bugs 2016-06-13 16:36:09 +00:00
.clang-format [formatting] Remove the formatting requirement for 2 empty lines between declarations. 2016-01-25 09:50:17 +00:00
.gitignore [mb] Add mb config 2016-06-09 09:12:54 +00:00
.gn [gn] Port exec_script whitelist from chromium/src/build 2016-06-07 07:49:12 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS tools: Fix a syntax error in plot-timer-events 2016-05-23 10:19:47 +00:00
BUILD.gn [turbofan] Retiring Greedy Allocator 2016-06-13 04:24:12 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Use v8-reviews@ for review mail, so v8-dev@ is free for dev discussions 2015-09-09 08:14:11 +00:00
DEPS Update V8 DEPS. 2016-06-12 03:25:30 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile [build] Ensure target_arch is set correctly in toplevel Makefile 2016-06-08 13:54:13 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
Makefile.nacl [gn] Move build to gypfiles 2016-04-29 10:11:11 +00:00
OWNERS [owners] adding more toplevel owners (but mainly me) 2016-03-16 15:54:42 +00:00
PRESUBMIT.py Remove LOG line checking from presubmit 2016-05-10 17:21:56 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni Try to reland v8_snapshot GN build changes, take #3 2016-05-20 07:00:09 +00:00
WATCHLISTS [GN] Watchlist upadate to track gyp changes. 2016-05-17 08:14:26 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.