> Date: Thu, 7 Mar 2024 12:55:50 +0000
> From: Stuart Henderson <stu@spacehopper.org>
> 
> On 2024/03/07 10:28, Mark Kettenis wrote:
> > This version looks best to me.  But I suspect arm64 needs more work in
> > this version too.
> 
> I tried to give it a spin with gnustep-based software, but no
> gnustep-base package is available for arm64 yet (I suspect because of
> the previous bugs in the libobjc2 port).
> 
> If I try to build gnustep-base myself it fails with BTI SIGILL during
> autoconf when doing a test for libffi, so it looks like we're probably
> missing something in libffi (tobhe fixed some things last November).
> I'm not getting useful backtraces so not sure where in libffi it's
> needed. Test program from libobjc2's autoconf files attached:
> 
> $ cc -I/usr/local/include -L/usr/local/lib config.ffi.c -lffi
> $ ktrace ./a.out
> a
> Illegal instruction (core dumped)
> $ kdump | tail
>   5909 a.out    RET   mmap 29349658624/0x6d5604000
>   5909 a.out    CALL  fcntl(1,F_ISATTY)
>   5909 a.out    RET   fcntl 1
>   5909 a.out    CALL  write(1,0x6d5604000,0x2)
>   5909 a.out    GIO   fd 1 wrote 2 bytes
>        "a
>        "
>   5909 a.out    RET   write 2
>   5909 a.out    PSIG  SIGILL SIG_DFL code=ILL_BTCFI addr=0x6e74fe010 trapno=905969666
>   5909 a.out    NAMI  "a.out.core"
> 
> "make test" in libffi runs ok, but picking another consumber of libffi
> I tried "make test" in guile3, and that has SIGILLs too.

I'll take a look.