[Webkit-unassigned] [Bug 186223] LayoutTests/fast/css/parsing-css-matches-7.html always abandons its Document (disabling JIT fixes it)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186223

--- Comment #9 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Also ScratchBuffer::dataBuffer() can be called off the main thread:

2   0x11573e1e5 JSC::ScratchBuffer::dataBuffer()
3   0x1158bfa56 JSC::DFG::SpeculativeJIT::compileExtractCatchLocal(JSC::DFG::Node*)
4   0x11586a168 JSC::DFG::SpeculativeJIT::compile(JSC::DFG::Node*)
5   0x11585cbba JSC::DFG::SpeculativeJIT::compileCurrentBlock()
6   0x11586b7a3 JSC::DFG::SpeculativeJIT::compile()
7   0x1156d3df7 JSC::DFG::JITCompiler::compileBody()
8   0x1156d88c5 JSC::DFG::JITCompiler::compileFunction()
9   0x1158054bd JSC::DFG::Plan::compileInThreadImpl()
10  0x115802b12 JSC::DFG::Plan::compileInThread(JSC::DFG::ThreadData*)
11  0x115a6d17c JSC::DFG::Worklist::ThreadBody::work()
12  0x114e3b377 WTF::AutomaticThread::start(WTF::AbstractLocker const&)::$_0::operator()() const
13  0x114e3afb9 WTF::Function<void ()>::CallableWrapper<WTF::AutomaticThread::start(WTF::AbstractLocker const&)::$_0>::call()
14  0x114e4b8bb WTF::Function<void ()>::operator()() const
15  0x114eced7f WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*)

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