Re: Failures with gcd functions with GCC snapshots GCC and -O3 (?)

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Michael Paquier <michael(at)paquier(dot)xyz>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>
Subject: Re: Failures with gcd functions with GCC snapshots GCC and -O3 (?)
Date: 2021-06-04 13:03:36
Message-ID: alpine.DEB.2.22.394.2106041502140.1430613@pseudo
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>> serinus has been complaining about the new gcd functions in 13~:
>
> moonjelly, which also runs a bleeding-edge gcc, started to fail the same
> way at about the same time. Given that none of our code in that area
> has changed, it's hard to think it's anything but a broken compiler.

> Maybe somebody should report that to gcc upstream?

Yes.

I will isolate a small case (hopefully) and do a report over week-end,
after checking that the latest version is still broken.

--
Fabien.

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