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Tim van der Lippe f054a1916f Add explanation for DCHECK that can fire with embedder misconfiguration 
While debugging, we discovered a Blink misconfiguration in the
navigator.mimeTypes object. We fixed the issue in
https://crrev.com/c/3303674, but let's also document on the V8 side when
you can hit the DCHECK and where to look next.

R=yangguo@chromium.org

Bug: chromium:1262066
Change-Id: I256331ec4296963deb152485d8c6699b75c42e37
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3302804
Auto-Submit: Tim Van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Tim Van der Lippe <tvanderlippe@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78154}
2021-11-30 12:07:20 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Upstream Google3 changes 2021-11-23 14:05:14 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
custom_deps
docs
gni [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
include [api] Inline ScriptOrigin methods as declaration 2021-11-30 10:39:28 +00:00
infra [infra] Add a blocking compile only mac64 CQ builder 2021-11-29 16:14:35 +00:00
samples cppgc: Fix hello world example 2021-11-11 10:16:08 +00:00
src Add explanation for DCHECK that can fire with embedder misconfiguration 2021-11-30 12:07:20 +00:00
test heap: Replace WeakObjects Worklist with ::heap::base::Worklist 2021-11-30 11:37:31 +00:00
testing [test][cleanup] Fix -Wshadow warnings in unittests 2021-09-27 08:59:01 +00:00
third_party [numbers] Rename ConversionFlags:NO_FLAG to NO_CONVERSION_FLAGS 2021-11-11 22:04:22 +00:00
tools [numfuzz] Extend numfuzz with more interrupt-budget fuzzing 2021-11-26 15:08:50 +00:00
.bazelrc [bazel] Support build mode compilation 2021-07-13 10:14:16 +00:00
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.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS [cppgc][unittests] Only expect guard pages support on 4k platforms. 2021-11-29 10:11:11 +00:00
BUILD.bazel Reland^2 "[fastcall] Enable float support on arm64 simulator"" 2021-11-24 11:58:39 +00:00
BUILD.gn [snapshot] Disable snapshot compression on desktop 2021-11-25 11:25:00 +00:00
CODE_OF_CONDUCT.md
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COMMON_OWNERS Remove neis@ from owners file 2021-10-26 11:15:20 +00:00
DEPS Update V8 DEPS. 2021-11-30 04:27:34 +00:00
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MIPS_OWNERS [mips] Add LiuYu to MIPS_OWNERS 2021-09-08 01:38:52 +00:00
OWNERS Let infra owners own all dot files 2021-11-05 18:57:18 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [bigint] Move multiplication to src/bigint/ 2021-04-19 15:40:43 +00:00
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WORKSPACE [bazel] Upstream BUILD and create config pkg 2021-10-28 15:14:40 +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://v8.dev/docs

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 at v8.dev/docs/contribute.