[Bug other/77421] Bugs found in GCC with the help of PVS-Studio

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77421

--- Comment #8 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #5)
> Remaining issues:

The missing warning is tracked in PR77430.