From: Jakub Narebski <jnareb@gmail•com>
To: "Shawn O. Pearce" <spearce@spearce•org>
Cc: git@vger•kernel.org
Subject: Re: [PATCH] autoconf: Add tests for memmem, strtoumax and mkdtemp functions
Date: Wed, 21 Nov 2007 19:47:50 +0100 [thread overview]
Message-ID: <200711211947.50661.jnareb@gmail.com> (raw)
In-Reply-To: <20071121065858.GU14735@spearce.org>
Shawn O. Pearce wrote:
> Jakub Narebski <jnareb@gmail•com> wrote:
>> By the way, do you have idea how to test for the following
>> in configure.ac:
>>
>> * Define NO_PREAD if you have a problem with pread() system call (e.g.
>> cygwin.dll before v1.5.22).
>>
>> - what is the problem? how to detect it?
>
> This also appears to be broken on HP-UX (e.g. we need to set
> NO_PREAD there). Thiago on IRC talked about this the other day
> when he was trying to build git on a bunch of different systems.
>
> Unfortunately this may just need to be an OS based test. The code
> compiles just fine but when index-pack tries to use pread to walk
> back through the deltas and generate their SHA-1s it barfs without
> an error code. I suspect the failure is pread claiming it put the
> data into the user buffer but not actually doing so, which causes
> zlib's inflate() to then see data corruption.
Can you write a short program which demonstrates this error (either
fails with some error code, or produces wrong output)? That would be
enough for configure.ac (see for example NO_C99_FORMAT in configure.ac)
Unless this is Schroedinger bug...
--
Jakub Narebski
Poland
prev parent reply other threads:[~2007-11-21 18:48 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-19 18:47 [PATCH] autoconf: Add tests for memmem, strtoumax and mkdtemp functions Jakub Narebski
[not found] ` <7vd4u5l29v.fsf@gitster.siamese.dyndns.org>
2007-11-20 18:12 ` Stefan-W. Hahn
2007-11-21 0:08 ` Matt Kraai
2007-12-05 15:45 ` [PATCH/RFC] autoconf: Add test for OLD_ICONV Jakub Narebski
2007-12-05 16:11 ` Brian Gernhardt
2007-12-05 16:33 ` Jakub Narebski
2007-12-05 16:31 ` Wincent Colaiuta
2007-12-05 16:52 ` Jakub Narebski
2007-12-05 20:49 ` Wincent Colaiuta
2007-12-05 21:19 ` Jakub Narebski
2007-12-05 21:38 ` Brian Gernhardt
2007-12-06 19:07 ` Wincent Colaiuta
2007-12-05 19:38 ` Junio C Hamano
2007-12-05 21:26 ` Jakub Narebski
2007-12-05 22:22 ` Junio C Hamano
2007-12-05 23:05 ` [PATCH/RFC (amend)] autoconf: Add test for OLD_ICONV (squelching compiler warning) Jakub Narebski
2007-12-05 23:27 ` Junio C Hamano
2007-12-05 21:46 ` [PATCH/RFC] autoconf: Add test for OLD_ICONV Pascal Obry
2007-11-21 6:58 ` [PATCH] autoconf: Add tests for memmem, strtoumax and mkdtemp functions Shawn O. Pearce
2007-11-21 18:47 ` Jakub Narebski [this message]
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