Comment # 3 on bug 1068967 from Freek de Kruijf

(In reply to Matthias Brugger from comment #1)
> Please provide the g++ version. I added some toolchain guys, so they can
> help to debug or provide info to where you should report the problem.

# gcc --version
gcc (SUSE Linux) 7.2.1 20171020 [gcc-7-branch revision 253932]
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


(In reply to Richard Biener from comment #2)
> More interesting information is a gdb session that shows the illegal
> instruction and where (in what binary/library) it happens.

Please provide the gdb command I should use.

> I suspect mpfr/gmp/gcc use some instructions that are not available on armv7
> due to bogus RPM_OPT_FLAGS or your hardware is simply not supported.
> 
> Or those components use some CPU variant dispatching with an error.
> 
> A core file might also help.

How would I produce such a file?