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Subject: Re: Kind of undefined behavior (or bug?) with GCC 10.1
To: Jonathan Wakely <jwakely.gcc@gmail.com>
Cc: gcc-help <gcc-help@gcc.gnu.org>
References: <e4cfa51e-2512-3fbf-7238-6dde4067a3cc@math.univ-lyon1.fr>
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From: Roland Denis <denis@math.univ-lyon1.fr>
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Date: Tue, 16 Jun 2020 15:34:26 +0200
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Thanks for your quick answer and the update on the bugtracker ! In a 
way, I'm relieved it's not my code's fault ;)

I will keep an eye on this bug report.

Regards,

-- 
Roland DENIS

Le 16/06/2020 à 14:59, Jonathan Wakely a écrit :
> On Tue, 16 Jun 2020 at 12:58, Roland Denis wrote:
>> Am I missing something important or does that look like a GCC bug ?
> It's a bug. It started with https://gcc.gnu.org/r271510 and was fixed
> in the master branch by https://gcc.gnu.org/r11-963 which was
> addressing https://gcc.gnu.org/PR95493 which is a different bug.
>
>> PS: result is correct with trunk version of GCC in godbolt, does that
>> mean it is an already solved bug?
> Looks like it, but I've added a comment to PR 95493 so that it can be
> investigated and we can be sure your problem is really fixed.