[Bug c++/93915] Suboptimal error message when there is no usable postfix operator-- overload due to unsatisfied constraints

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93915

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I thought I had saw another bug asking a similar thing but without concepts
being involved.