[Bug ada/123945] Mutable tagged types specified as generic formal types can not be used for generic formal objects

[liam at liampwll dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123945

--- Comment #2 from Liam Powell <liam at liampwll dot com> ---
Ah, I didn't scroll down to my last comment there and realise I already came
across this.