[Webkit-unassigned] [Bug 188501] Meaning of OptionSet::contains is unclear when used with OptionSet argument

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188501

--- Comment #12 from Don Olmstead <don.olmstead at sony.com> ---
Ok I've had some time to narrow this down.

It was failing to compile Source/WebCore/rendering/TextDecorationPainter.cpp on MSVC within the contains method. There are multiple instances of contains with an OptionSet within that file but the part its choking on is within a lambda.

https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/rendering/TextDecorationPainter.cpp#L385

I have a feeling its another MSVC bug that's the issue here. Will attempt to make a godbolt example and throw it at the Visual Studio folks.

Anyways if contains doesn't use an std::initializer_list things get back to green. Its not just WinCairo but AppleWin that are red here.

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