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Anton Bikineev 454272dfca cppgc: Check poisoness only on 64bit archs. 
On 64bit we guarantee that object alignment and sizes are multiple of
the default shadow memory granularity (8 bytes). The CL also introduces
CHECKs that the assumption holds.

Having kObjectAlignment be multiple of this granularity allows us to
check poisoness of each byte of an object. On 32bit we can not do that,
since the object alignment requirement is 4 bytes.

Bug: chromium:1241514
Change-Id: Ib19667724adaa7bc791ffa054eea618c365d65cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3118552
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76499}
2021-08-26 08:35:43 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Initial support to mjsunit tests 2021-08-09 14:12:02 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
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gni [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
include Reland "cppgc: Fix CTP for destruction"" 2021-08-25 18:45:56 +00:00
infra [infra] Add NumFuzz CI builders with infra staging flags 2021-08-24 11:46:14 +00:00
samples Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
src cppgc: Check poisoness only on 64bit archs. 2021-08-26 08:35:43 +00:00
test [wasm-simd] Share i32x4.trunc_sat_f64x2 s,u zero implementation 2021-08-25 23:10:59 +00:00
testing [macros] Upstream Google3 changes 2021-06-24 16:36:14 +00:00
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tools [sandbox] Disallow ArrayBuffers outside the VM Cage 2021-08-25 09:52:38 +00:00
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.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS [date] Fix Date#getMinutes() test failures 2021-08-18 14:54:40 +00:00
BUILD.bazel cppgc-js: Allow custom OOM handling and redirect to V8 handler 2021-08-24 20:21:28 +00:00
BUILD.gn Reland "cppgc: Fix CTP for destruction"" 2021-08-25 18:45:56 +00:00
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PRESUBMIT.py [bigint] Move multiplication to src/bigint/ 2021-04-19 15:40:43 +00:00
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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.