powerpc64 graphics/mesa-dri build failure in poudriere, system clang's /usr/bin/cc got assert failure: "Target supports vector op, but scalar requires expansion?"

[Mark Millard]

On 2019-May-23, at 11:47, Jan Beich <jbeich at FreeBSD.org> wrote:

> Mark Millard <marklmi at yahoo.com> writes:
> 
>> Unfortunately poudiere bulk tar archives of failures do not
>> catch the /tmp/* material from:
>> 
>> cc: error: unable to execute command: Abort trap (core dumped)
>> cc: error: clang frontend command failed due to signal (use -v to see invocation)
>> FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0)
>> Target: powerpc64-unknown-freebsd13.0
>> Thread model: posix
>> InstalledDir: /usr/bin
> 
> Do you have the build log? Maybe it's possible to reproduce simply by adding
> -target powerpc64-unknown-freebsd13.0 while cross-building that particular file
> using otherwise the same command line options as native build.

I have expanded the poudriere bulk's tar of the failure and rerun the
command from there. The problem reproduced:

# ls -lTdt /tmp/nir_constant_expressions-9b094e.*
-rw-r--r--  1 root  wheel    11069 May 23 12:08:35 2019 /tmp/nir_constant_expressions-9b094e.sh
-rw-r--r--  1 root  wheel  1951892 May 23 12:08:35 2019 /tmp/nir_constant_expressions-9b094e.c


So I gzip'd the .c and created:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238082

with the two files as 2 attachments.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)