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Re: Testing parallel mode and PR34106

From: "Chris Jefferson" <chris at bubblescope dot net>
To: "Paolo Carlini" <pcarlini at suse dot de>
Cc: "Benjamin Kosnik" <bkoz at redhat dot com>, "Jonathan Wakely" <jwakely dot gcc at gmail dot com>, libstdc++ at gcc dot gnu dot org
Date: Wed, 12 Dec 2007 00:19:31 +0000
Subject: Re: Testing parallel mode and PR34106
References: <4348dea50712110602n53e802d6nea5ddf4992812ea8@mail.gmail.com> <20071211175423.7eee935e@concorde.artheist.org> <475F2568.6080103@suse.de>

On 12/12/2007, Paolo Carlini <pcarlini@suse.de> wrote:
> Hi,
>
> some additional details, almost obvious, but anyway.
> > FAIL: 25_algorithms/partial_sort/moveable.cc (test for excess errors)
> >
> This one is because the parallel version of partial_sort doesn't move.
> > FAIL: 25_algorithms/sort/vectorbool.cc (test for excess errors)
> >
> No idea, we should probably look into it as soon as possible.

I haven't looked at this example, but I've previously had trouble with
vector<bool> in threaded code. You can't assume you can read and write
to distinct values in different threads, because of how the different
bits are compressed together.

Chris

Follow-Ups:
- Re: Testing parallel mode and PR34106
  - From: Paolo Carlini

References:
- Testing parallel mode and PR34106
  - From: Jonathan Wakely
- Re: Testing parallel mode and PR34106
  - From: Benjamin Kosnik
- Re: Testing parallel mode and PR34106
  - From: Paolo Carlini

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