[Webkit-unassigned] [Bug 220662] std::is_literal_type causes -Wdeprecated-declarations warning with GCC 11

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220662

--- Comment #4 from Darin Adler <darin at apple.com> ---
Here are my preferences for solutions to this:

- switch to std::variant

- update to (or maybe it’s "merge in") a newer version of the variant implementation; in r204227, Sam Weinig got it from https://bitbucket.org/anthonyw/variant/src and we could look there for a newer version

- disable this warning just for Variant.h

- patch our Variant.h to sidestep the lack of is_literal_type (might be straightforward to do it at least well enough to not break WebKit?)

- disable this warning globally

We can also do any combination of these, and do one first and then move up to the "better solutions" later. I’d like to climb from the bottom up to the top as far as we can go.

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