https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94685
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This diagnostic seems wrong too:
using A = int[1];
A a1{A{}};
ntconsarr.cc:1:26: error: taking address of temporary array
1 | using A = int[1]; A a1{A{}};
| ^~~
