Re: VLC on G5 crash : illegal instruction
On Sun, Mar 7, 2021 at 2:10 PM Luke Kenneth Casson Leighton
> On Sunday, March 7, 2021, Riccardo Mottola <firstname.lastname@example.org> wrote:.
>> the issue is most probably in libpcre2 or Qt5Core
>> #0 0x00007fffe9c5fa30 in ?? ()
>> #1 0x00007ffff02c406c in ?? () from /usr/lib/powerpc64-linux-gnu/libpcre2-16.so.0
> *splutter* but... but... wow! that's amazing. pcre2 contains a JIT assembly compiler simply for the purposes of generating highly optimised regular expression parsing.
> holy cow :)
> chances are then that an instruction was added which is assumed to exist in OpenPOWER v3.0 but is not present in v2.06 (etc)
> a cursory scan shows no evidence of the use of VSX there.
If needed... I believe it is possible to disable PCRE2's JIT at configure time.