x86 in-kernel fpu bug

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Mon, 20 Jul 2020 11:04:21 +0100
> From: Patrick Welche <prlw1%cam.ac.uk@localhost>
> 
> After a -current/amd64 update, a sudden outbreak of floating point exceptions:
> 
> /usr/src/tools/gcc/../../external/gpl3/gcc/dist/gcc/tree-ssa-operands.c:1348:1: 
> internal compiler error: Floating point exception                               
> 
> Fetching message headers...
> Floating point exception (core dumped) mutt
> 
> Any guesses?

There's a good chance this has been fixed in sys/arch/x86/x86/fpu.c
revision 1.72 -- can you update and try again with a new kernel?