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Benedikt Meurer b707c602f0 Revert "[base] Make USE a variadic template" 
This reverts commit 39e335c7cc.

Reason for revert: Breaks debug builds on Linux, especially mksnapshot fails now, i.e.:

FAILED: mksnapshot
python "../../build/toolchain/gcc_link_wrapper.py" --output="./mksnapshot" -- ../../third_party/llvm-build/Release+Asserts/bin/clang++ -pie -Wl,--fatal-warnings -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -fuse
-ld=gold -B../../third_party/binutils/Linux_x64/Release/bin -Wl,--threads -Wl,--thread-count=4 -Wl,--icf=all -m64 -Werror -Wl,--gdb-index --sysroot=../../build/linux/debian_jessie_amd64-sysroot -L../../build/linux/debian_jessie_amd64-sysroot/lib/x86_64-linux-gnu -Wl,-rpat
h-link=../../build/linux/debian_jessie_amd64-sysroot/lib/x86_64-linux-gnu -L../../build/linux/debian_jessie_amd64-sysroot/usr/lib/x86_64-linux-gnu -Wl,-rpath-link=../../build/linux/debian_jessie_amd64-sysroot/usr/lib/x86_64-linux-gnu -Wl,-rpath-link=. -Wl,--disable-new-dt
ags -rdynamic -nodefaultlibs -o "./mksnapshot" -Wl,--start-group @"./mksnapshot.rsp"  -Wl,--end-group   -ldl -lpthread -lrt -lc -lm -lgcc_s
../../src/elements.cc:3362: error: undefined reference to 'v8::internal::(anonymous namespace)::ElementsKindTraits<(v8::internal::ElementsKind)7>::Kind'
../../src/elements.cc:3362: error: undefined reference to 'v8::internal::(anonymous namespace)::ElementsKindTraits<(v8::internal::ElementsKind)8>::Kind'
../../src/elements.cc:3953: error: undefined reference to 'v8::internal::(anonymous namespace)::ElementsKindTraits<(v8::internal::ElementsKind)9>::Kind'
../../src/profiler/heap-snapshot-generator.cc:187: error: undefined reference to 'v8::internal::(anonymous namespace)::SnapshotSizeConstants<4ul>::kExpectedHeapGraphEdgeSize'
../../src/elements.cc:3953: error: undefined reference to 'v8::internal::(anonymous namespace)::ElementsKindTraits<(v8::internal::ElementsKind)10>::Kind'
../../src/profiler/heap-snapshot-generator.cc:198: error: undefined reference to 'v8::internal::(anonymous namespace)::SnapshotSizeConstants<4ul>::kExpectedHeapEntrySize'
../../src/profiler/heap-snapshot-generator.cc:199: error: undefined reference to 'v8::internal::(anonymous namespace)::SnapshotSizeConstants<8ul>::kExpectedHeapGraphEdgeSize'
../../src/profiler/heap-snapshot-generator.cc:200: error: undefined reference to 'v8::internal::(anonymous namespace)::SnapshotSizeConstants<8ul>::kExpectedHeapEntrySize'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

Original change's description:
> [base] Make USE a variadic template
> 
> This will allow for passing more than one variable. This is
> particularly interesting for calling a method on each type in a
> parameter pack, as in:
> 
> template<typename... T>
> void foo(T&&... ts) {
>   USE(do_something(ts)...);
> }
> 
> Drive-by fix: Allow to pass arbitrary types to USE, including
> references. This might prevent a copy for pass-by-value.
> 
> R=​ishell@chromium.org
> 
> Change-Id: I8f894d730bbcd195ed83705f98771994b4bc906f
> Reviewed-on: https://chromium-review.googlesource.com/565561
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46527}

TBR=clemensh@chromium.org,ishell@chromium.org

Change-Id: Ibd3f0529e7a3136c4bcac15443da3d9f8dde8510
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/565141
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46534}
2017-07-10 17:19:30 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides Remove build_overrides/v8.gni. 2017-01-26 20:18:58 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [build] Dump build configuration for all v8 executables 2017-06-29 08:06:45 +00:00
gypfiles [build] Clean up lto, gold plugin and cfi from gyp files 2017-06-27 15:45:18 +00:00
include Add myself to include/OWNERS 2017-07-07 15:32:00 +00:00
infra [build] Temporarily switch off custom libcxx on native arm debug 2017-07-06 09:43:51 +00:00
samples Reland of land "Turn libbase into a component" (patchset #1 id:1 of https://codereview.chromium.org/2396933002/ ) 2016-10-07 07:56:52 +00:00
src Revert "[base] Make USE a variadic template" 2017-07-10 17:19:30 +00:00
test Revert "[base] Make USE a variadic template" 2017-07-10 17:19:30 +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 [release] Explicitly use Gerrit in all release tools 2017-07-10 14:56:25 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.gitignore [wasm] Remove the wasm-asmjs fuzzer 2017-06-21 10:59:35 +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 [build] Set MSVS .obj folders in gyp for v8_base 2017-06-30 12:40:19 +00:00
BUILD.gn [builtins] Port Proxy constructor to CSA. 2017-07-10 12:15:53 +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 Update V8 DEPS. 2017-07-10 03:26:24 +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] Life support for top-level Makefile. 2017-06-07 13:10:40 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Add COMPONENT tags to OWNERS files where appropriate 2017-05-22 10:15:28 +00:00
PRESUBMIT.py [test] Automatically add a noi18n bot for changes affecting Intl 2017-06-06 13:01:14 +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.