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Date: Wed, 15 Oct 2014 12:02:11 +0200
From: Natanael Copa <ncopa@...inelinux.org>
To: *** <jianzhong.huang@...oft.com.cn>
Cc: musl@...ts.openwall.com
Subject: Re: Webkit/JavascriptCore did not work with musl libc
On Wed, 15 Oct 2014 13:58:42 +0800
*** <jianzhong.huang@...oft.com.cn> wrote:
> Hi, all,
> I build webkitgtk-2.4.4 and ewebkit2 under musl libc with
> gcc-4.9.1(patched) and clang-3.5, the javascriptCore js engine did not
> work as expected(with JIT enable or disable.)
>
> for webkitgtk, jsc just output "Exception:" when run any js codes.
> for ewebkit2, jsc just segfault with below backtrace:
>
> #0 0x00000000008cf0c4 in WTFCrash ()
> #1 0x000000000065bb72 in WTF::PassRefPtr<JSC::ProgramNode>
> JSC::parse<JSC::ProgramNode>(JSC::VM*, JSC::SourceCode const&,
> JSC::FunctionParameters*, JSC::Identifier const&,
> JSC::JSParserStrictness, JSC::JSParserMode, JSC::ParserError&,
> JSC::JSTextPosition*, bool) ()
> #2 0x000000000077c6f0 in
> JSC::BuiltinExecutables::createBuiltinExecutable(JSC::SourceCode const&,
> JSC::Identifier const&) ()
> #3 0x000000000077cc73 in
> JSC::BuiltinExecutables::functionPrototypeApplyCodeExecutable() ()
> #4 0x000000000076ee90 in
> JSC::functionPrototypeApplyCodeGenerator(JSC::VM&) ()
> #5 0x00000000007c1a78 in
> JSC::FunctionPrototype::addFunctionProperties(JSC::ExecState*,
> JSC::JSGlobalObject*, JSC::JSFunction**, JSC::JSFunction**) ()
> #6 0x0000000000682f89 in JSC::JSGlobalObject::reset(JSC::JSValue) ()
> #7 0x00000000004f68c1 in JSC::JSGlobalObject::finishCreation(JSC::VM&) ()
> #8 0x00000000004f600c in GlobalObject::finishCreation(JSC::VM&,
> WTF::Vector<WTF::String, 0ul, WTF::CrashOnOverflow> const&) ()
> #9 0x00000000004f01b8 in jscmain(int, char**) ()
> #10 0x00000000004eff5d in main ()
>
> The JSCore codes is too complex and I even can not figure out the buggy
> codes quickly.
>
> My environment is a customized linux with musl libc/wayland
> only/gcc/clang/systemd and so on.
>
> can Anybody who use a musl libc based distribution try and check it? for
> webkitgtk2, there is no need to build it completely, just:
> configure and "make jsc" then try it.
Alpine Linux, x86_64, musl-1.1.5, gcc (Alpine 4.8.3) 4.8.3
ncopa-desktop:~$ apk version webkitgtk
Installed: Available:
webkitgtk-2.4.5-r1 = 2.4.5-r1
ncopa-desktop:~$ jsc-3
"hello"
>>> Exception: RangeError: Maximum call stack size exceeded.
Maybe the thread stack needs to be increased?
>
> I am also working on it.
>
-nc
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