[Bug d/95155] d: wrong vtable offset in virtual function call

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95155

--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Looks like fix was in r10-7280, taken from the upstream backport in
https://github.com/dlang/dmd/pull/10913