[Bug middle-end/21161] [6/7/8 Regression] "clobbered by longjmp" warning ignores the data flow

[bruno at clisp dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21161

--- Comment #15 from Bruno Haible <bruno at clisp dot org> ---
> I think the following test case does show what Bruno was trying to prove.

Yes, the test case from comment 14 much better reflects what this bug report is
about, than the one from comment 13.