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Eric Holk e6defddc15 [d8] zero realm_count_ on RealmScope teardown 
Promises can sometimes be resolved after the RealmScope has been destroyed, such
as when a Wasm compile job finishes after the script main has finished. If the
Promise.then function refers to Realm.current, we were getting a use-after free
error when it would search for the list of realms. This change also zeros out
realm_count_ in addition to deleting the realms_ so that RealmFind will not
reference freed memory.

Bug: chromium:761710
Change-Id: I2d42997f363b284ccc5f4b225d3f59e0361e68d6
Reviewed-on: https://chromium-review.googlesource.com/671923
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48073}
2017-09-19 00:42:11 +00:00
benchmarks Fix common misspellings 2017-08-02 09:35:28 +00:00
build_overrides Remove build_override for macOS min SDK and deployment target. 2017-07-14 18:24:44 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni add gn jumbo build support 2017-08-09 09:05:29 +00:00
gypfiles [build] Change Typed Array threshold to an actual build time flag. 2017-09-15 08:55:06 +00:00
include Allow overriding DCHECK handling and make it non-fatal. 2017-09-15 11:48:16 +00:00
infra [build] Add MB config for win64 asan bots 2017-08-16 14:01:31 +00:00
samples [presubmit] Enable and fix "build/namespaces" linter check. 2017-09-04 11:24:26 +00:00
src [d8] zero realm_count_ on RealmScope teardown 2017-09-19 00:42:11 +00:00
test [intl] fix off-by-1 in NumberFormat formatToParts parameter parsing 2017-09-18 20:07:23 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Remove myself from non-toplevel owners files 2017-06-28 10:00:48 +00:00
tools Make JavaScriptFrame pure virtual. 2017-09-15 11:40:06 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.gitignore add .vscode to .gitignore 2017-08-14 23:18:09 +00:00
.gn For building v8 using gn on aix_ppc64, linux_s390x and linux_ppc64(both LE and BE). 2017-05-12 01:35:09 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS Pass Isolate pointer to String::Utf8Value/Value constructors 2017-08-28 18:17:08 +00:00
BUILD.gn Revert "Revert "[wasm] A simple allocator datastructure for off-the heap"" 2017-09-16 05:23:35 +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 Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
DEPS [test] test262 roll 2017-09-11 17:12:48 +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 [heap] Port concurrent marking flag to GYP. 2017-08-23 15:26:43 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Add eholk and gdeepti to toplevel owners 2017-08-12 07:07:29 +00:00
PRESUBMIT.py [iwyu] Turn inclusion presubmit warning into and error. 2017-09-14 10:17:58 +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 MIPS[64]: Add support for big endian build using GN 2017-06-02 15:02:18 +00:00
WATCHLISTS [V8Tracing] Add lpy@ and fmeawad@ into watchlist for tracing/. 2017-05-22 19:40:17 +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.