On Mon, Feb 1, 2021 at 10:06 AM Tom Lane <[email protected]> wrote: > Heikki Linnakangas <[email protected]> writes: > > On 31/01/2021 22:54, Alexander Korotkov wrote: > >> Implementation of subscripting for jsonb > > > The Itanium and sparc64 buildfarm members didn't like this, and are > > crashing at "select ('123'::jsonb)['a'];". Unaligned memory access, perhaps? > > I think I just identified the cause.
Thanks again for fixing this. BTW, I managed to reproduce the issue by compiling with CFLAGS="-O0 -fsanitize=alignment -fsanitize-trap=alignment" and the patch attached. I can propose the following to catch such issues earlier. We could finish (wrap attribute with macro and apply it to other places with misalignment access if any) and apply the attached patch and make commitfest.cputube.org check patches with CFLAGS="-O0 -fsanitize=alignment -fsanitize-trap=alignment". What do you think? ------ Regards, Alexander Korotkov
pg_comp_crc32c_sse42_no_sanitize_alignment.patch
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