[Bug d/118248] [15 Regression] gdc ICE (segfault) building a riscv64 cross compiler on s390x-linux-gnu

[ibuclaw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118248

--- Comment #23 from Iain Buclaw <ibuclaw at gcc dot gnu.org> ---
(In reply to Iain Buclaw from comment #22)
>     pthis.msgBuf = buf;
In D, this is an array copy assignment.

I've tried lowering this to `foreach (i; 0 .. 100) msgBuf[i] = buf[i]`, but
that doesn't trigger the ICE.