From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Mon, 20 Nov 2017 11:14:47 +0000 (+0100)
Subject: meson: add -Wimplicit-fallthrough=3 to compilation options (#7393)
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=c123b93e593eb93e45df12ee30185fb2049b973c;p=elogind.git

meson: add -Wimplicit-fallthrough=3 to compilation options (#7393)

At some point before gcc-7 was released, -Wimplicit-fallthrough=3 was included
in -Wextra. The documentation for gcc-7.2.1-2.fc27.x86_64 still says that, but
empirical testing shows that it's not. The documentation also misstates that
-Wimplicit-fallthrough is equivalent to -Wimplicit-fallthrough=3.

Let's add -Wimplicit-fallthrough=3 explicitly to get the warnings if we regress.

Prompted by #7389.
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