[Webkit-unassigned] [Bug 185194] [GTK] Error building WebKitGtk+ with gcc version 7.3.1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185194

--- Comment #19 from Michael Catanzaro <mcatanzaro at igalia.com> ---
As I mentioned earlier today, I'm actually not working with Fedora's GCC, but with the freedesktop.org GCC, which is GNOME's reference compiler, inside the BuildStream sandbox to ensure that there is no host pollution. So there is a reference platform here, and GNOME will not be able to upgrade to newer WebKit versions unless we fix this.

The fact that Miguel reproduced the exact same error with Fedora's GCC indicates that it's not somehow specific to the freedesktop SDK.

I intend to try replacing our std::optional with WTF::optional (but probably not until next week). I'm about 70% confident that will work. If it doesn't, I'll roll out the switch to std=c++17 and we can discuss how to proceed (or if we really want to be relying on experimental compiler features so soon).

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