[Webkit-unassigned] [Bug 179606] WebAssembly crash in UIWebView iOS 11

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179606

--- Comment #4 from Saam Barati <sbarati at apple.com> ---
(In reply to JF Bastien from comment #2)
> Comment on attachment 326751 [details]
> Bugfix Patch
> 
> Options.cpp does the following:
> 
>     if (!Options::useJIT())
>         Options::useWebAssembly() = false;
> 
> That should cover some cases, but indeed doesn't cover the case where we
> dynamically discover that we can't allocate executable memory. I think we
> might want to update useJIT in that case and re-run the part that makes
> options consistent, since executable allocation runs early?

VM::canUseJIT() is the way we ask this question, not Options::useJIT(). VM::canUseJIT() changes its answer based on Options::useJIT(). There really shouldn't be any other clients of Options::useJIT().

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