Re: [FFmpeg-devel] [PATCH 1/2] avutil/opt: Alpha workaround

From: Anton Khirnov <anton@khirnov.net>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 1/2] avutil/opt: Alpha workaround
Date: Mon, 06 Jun 2022 09:55:21 +0200
Message-ID: <165450212145.13099.13616353651253482742@lain> (raw)
In-Reply-To: <20220601170127.GQ396728@pb2>

Quoting Michael Niedermayer (2022-06-01 19:01:27)
> On Wed, Jun 01, 2022 at 12:38:05PM +0200, Anton Khirnov wrote:
> > Quoting Michael Niedermayer (2022-05-30 21:09:10)
> > > alpha-linux-gnu-gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 with qemu-alpha version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.39)
> > > trigger a FPE on the DBL_MAX * 90000 operation
> > > 
> > > Iam not 100% sure why, but if i mess with mfp-trap-mode the compiler produces internal compiler errors
> > > This issue seems not to affect the fate box with an older compiler
> > > 
> > > Ive also tried the gcc 6, gcc 7, gcc 8 packages with no luck
> > 
> > Do we event want to keep support for alpha? 
> 
> I have no opinion here
> 
> 
> > Does it still have any
> > real-world use? 
> 
> i do not know 
> 
> 
> > It does not seem productive to spend development time on
> > a dead platform.
> 
> Ive had the same thought and actually was a bit angry on myself after i spend
> too long to get a gcc + qemu + gdb working together to debug this. Felt like
> i could have done something more productive
> 
> I think a question is, is there someone who wants to maintain alpha support
> because it seems it needs some support.
> If someone does, its no work for me and i certainly dont mind if we keep alpha
> on the list of supported architectures.
> If not we can just apply this and pretend its still supported until it breaks
> again. Though such support would not be with teh toolchain from the ubuntu
> i used. The old fate box seems to work a lot better
> Or we can just deprecate it and drop on a future bump
> dont really have an opinion, but i dont plan to put any significant amount
> of time in alpha support

Sounds reasonable. I would be in favor of deprecating it unless someone
volunteers to maintain it.

-- 
Anton Khirnov
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