AuroraMiddleware/v8
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addaleax 8ed65b97a3 Make FieldType::None() non-nullptr value to avoid undefined behaviour 
When FieldType::None() returns a cast Smi::FromInt(0), which translates
as nullptr, the FieldType::IsNone() check becomes equivalent to
`this == nullptr` which is not allowed by the standard and
therefore optimized away as a false constant by GCC 6.

This has lead to crashes when invoking methods on FieldType::None().

Using a different Smi constant for FieldType::None() makes the compiler
always include a comparison against that value. The choice of these
constants has no effect as they are effectively arbitrary.

BUG=https://github.com/nodejs/node/issues/8310

Review-Url: https://codereview.chromium.org/2292953002
Cr-Commit-Position: refs/heads/master@{#39023}
2016-08-30 17:56:05 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides [gn] Allow overriding sanitizer suppression files 2016-08-30 12:15:53 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [swarming] Remove hard-coded shared library configs 2016-07-28 07:18:15 +00:00
gypfiles Reland of Fix compiler warnings on "make android_arm" (patchset #1 id:1 of https://codereview.chromium.org/2286163002/ ) 2016-08-28 21:03:32 +00:00
include Blink-compatible serialization of SharedArrayBuffer. 2016-08-30 14:05:49 +00:00
infra [gn] Switch tsan to gn 2016-08-05 11:55:23 +00:00
samples Provide a convenience array buffer allocator 2016-06-29 07:42:40 +00:00
src Make FieldType::None() non-nullptr value to avoid undefined behaviour 2016-08-30 17:56:05 +00:00
test Make FieldType::None() non-nullptr value to avoid undefined behaviour 2016-08-30 17:56:05 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party/binutils Update binutils version to match Chromium. 2016-07-08 07:03:29 +00:00
tools Add an option --gn to run-tests.py that just runs the latest gn build 2016-08-30 12:21:27 +00:00
.clang-format [formatting] Remove the formatting requirement for 2 empty lines between declarations. 2016-01-25 09:50:17 +00:00
.gitignore Add generated fuzzer files to .gitignore 2016-08-30 15:31:37 +00:00
.gn Remove NaCl support. 2016-07-27 07:50:31 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS Solaris/OpenBSD/FreeBSD: [heap] Uncommit unused large object page memory. 2016-08-16 12:00:53 +00:00
BUILD.gn [wasm] Create a new fuzzer for wasm code. 2016-08-29 13:56:00 +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. 2016-08-30 12:20:37 +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
LICENSE.v8
LICENSE.valgrind
Makefile Remove NaCl support. 2016-07-27 07:50:31 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Adding some wasm committers to top level OWNERS. 2016-06-28 16:28:06 +00:00
PRESUBMIT.py Enable check for non-gender neutral pronouns 2016-06-23 07:15:18 +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 Use clang for snapshot_toolchain by default, except on ChromeOS. 2016-08-23 14:04:27 +00:00
WATCHLISTS Remove oth from v8 WATCHLISTS file. 2016-08-30 08:32:33 +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.