Horton

Re: BUG #14897: Segfault on statitics SQL request

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Vincent Lachenal <vincent.lachenal@gmail.com>
Cc: pgsql-bugs@postgresql.org
Date: 2017-11-10T22:16:07Z
Lists: pgsql-bugs 
Vincent Lachenal <vincent.lachenal@gmail.com> writes:
> With a fresh database, bug is still here ...
> I will try to compile PostgreSQL on my computer before open a bug on
> Archlinux (I will also try the testing Gentoo package). If I find something
> interesting, I will reply in in this thread.

> Thanks for your help and your reactivity. The bug seems to be limited to my
> specific environment which is a good news (Arch has been installed for
> almost 4 years and is not known for its stablility).

FWIW, I tried a build on Fedora 25 using the same compiler flags you
showed.  Works OK there too.  So this suggests possibly an Archlinux-
specific compiler bug, though I wouldn't want to pin blame without
more evidence.

It'd definitely be interesting to see a stack trace, if you manage
to reproduce the problem in a debug-enabled build.

			regards, tom lane

Commits

  1. Prevent int128 from requiring more than MAXALIGN alignment.

  2. Rearrange c.h to create a "compiler characteristics" section.