[Bug ada/126740] Assert_Failure from mix of records, generics, and -gnatn

[liam at liampwll dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126740

--- Comment #5 from Liam Powell <liam at liampwll dot com> ---
Looks like g:60ea3af75ccf6356abac83aa9eecee5c672202d0

Backporting to my branch fixes it. I'm still not sure if there's a real bug in
Abstract_Interface_List though.