https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126924

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> That test mentions
> https://web.archive.org/web/20160610055209/http://security.coverity.com/blog/
> 2013/Sep/gimme-a-break.html as partial rationale (guess more discussions
> will be on the mailing list).

Specifically:

"In this case the subsequent case labels immediately break. In this case
inserting a break would not change the program behavior, so we do not report."

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