[Bug c++/62182] New warning wished: operator== and "equality comparison result unused [-Wunused-comparison]"/-Wunsed-value

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62182

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Arnaud Bienner from comment #3)
> One thing that doesn't work is turning on this warning using
> -Wunused-comparison parameter. But surprisingly, turning it off with
> -Wno-unused-comparison (when -Wunused or -Wall is used) works. Not sure what
> I'm missing here.

Because the emit_side_effect_warnings calls are guarded by warn_unused_value.