https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103215

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Does double post-increment `if (type-- == name_and_type || type-- == 
>name_and_type)` have defined behaviour?

Yes as the || acts as a sequence point.

My bet is there is a (bad) transformation going on that converts v-- == array
to v == array-1, v-- and that is causing the warnings to show up.

> I think error message is at least incorrectly worded. 

the warning is correct iif array-2 was used and that seems to be the problem
here is that is not used directly but the compiler decides to create it
(incorrectly).

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