GNU bug report logs - #75964
Switching the Emacs build to -Wswitch-enum in src/

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Message #176 received at 75964 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Pip Cet <pipcet <at> protonmail.com>
Cc: Andrea Corallo <acorallo <at> gnu.org>, Eli Zaretskii <eliz <at> gnu.org>,
 eggert <at> cs.ucla.edu, 75964 <at> debbugs.gnu.org, stefankangas <at> gmail.com
Subject: Re: bug#75964: Switching the Emacs build to -Wswitch-enum in src/
Date: Tue, 04 Feb 2025 08:58:21 -0500

> Switching over an enum without a default: label will generate
> fall-through code, for those cases in which the enum variable has a
> value that's not in the enumeration.

Ah, thanks, now I understand the problem.

Yes, this part of C sucks and I had forgotten about it.
I wish it offered a special label (call it `invalid:`, `notenum:`,
`bogus:`, `outofrange:`, ...) for "what to do when the value is not
a member of the enum".


        Stefan

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