From: Mark Brown <broonie@sirena.org.uk>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>,
git@vger.kernel.org
Subject: Re: Valgrind updates
Date: Tue, 27 Jan 2009 13:14:04 +0000 [thread overview]
Message-ID: <20090127131404.GA11870@sirena.org.uk> (raw)
In-Reply-To: <alpine.DEB.1.00.0901270512171.14855@racer>
On Tue, Jan 27, 2009 at 05:26:34AM +0100, Johannes Schindelin wrote:
> I suspected that zlib does something "cute" with alignments, i.e. that it
> writes a possibly odd number of bytes, but then rounds up the buffer to
> the next multiple of two of four bytes.
I don't recall anything along those lines in zlib but it does generate
warnings with valgrind which require overrides - it has at least one
unrolled loop which roll on beyond initialised memory (but keep within
memory that zlib knows it has allocated). It rolls back the results of
the loop before producing output, but it's possible that some unused
bits in the stream may be derived from the results.
next prev parent reply other threads:[~2009-01-27 13:15 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-19 9:13 What's cooking in git.git (Jan 2009, #04; Mon, 19) Junio C Hamano
2009-01-19 11:54 ` Kjetil Barvik
2009-01-19 13:09 ` Johannes Schindelin
2009-01-19 13:08 ` Johannes Schindelin
2009-01-20 4:44 ` Jeff King
2009-01-20 13:51 ` valgrind patches, was " Johannes Schindelin
2009-01-20 14:19 ` Jeff King
2009-01-20 14:50 ` Johannes Schindelin
2009-01-20 15:04 ` [PATCH 1/2] Add valgrind support in test scripts Johannes Schindelin
2009-01-20 15:05 ` [PATCH 2/2] valgrind: ignore ldso errors Johannes Schindelin
2009-01-21 0:12 ` [PATCH 1/2] Add valgrind support in test scripts Jeff King
2009-01-21 0:41 ` Johannes Schindelin
2009-01-21 1:10 ` [PATCH 1/2 v2] " Johannes Schindelin
2009-01-21 1:11 ` [INTERDIFF of PATCH " Johannes Schindelin
2009-01-21 8:48 ` [PATCH " Junio C Hamano
2009-01-21 12:21 ` Johannes Schindelin
2009-01-21 19:02 ` Jeff King
2009-01-21 20:49 ` Johannes Schindelin
2009-01-21 21:53 ` Jeff King
2009-01-21 22:38 ` Johannes Schindelin
2009-01-25 23:18 ` [PATCH 0/3] Valgrind support Johannes Schindelin
2009-01-25 23:18 ` [PATCH v3 1/3] Add valgrind support in test scripts Johannes Schindelin
2009-01-25 23:29 ` Jeff King
2009-01-25 23:35 ` Johannes Schindelin
2009-01-25 23:42 ` Jeff King
2009-01-25 23:19 ` [PATCH v3 2/3] valgrind: ignore ldso and more libz errors Johannes Schindelin
2009-01-25 23:32 ` Jeff King
2009-01-26 0:02 ` Johannes Schindelin
2009-01-26 0:14 ` Jeff King
2009-01-25 23:20 ` [PATCH 3/3] Valgrind support: check for more than just programming errors Johannes Schindelin
2009-01-25 23:42 ` Jeff King
2009-01-26 0:43 ` Johannes Schindelin
2009-01-21 22:31 ` [PATCH] valgrind tests: be super-super paranoid when creating symlinks Johannes Schindelin
2009-01-20 23:24 ` valgrind patches, was Re: What's cooking in git.git (Jan 2009, #04; Mon, 19) Jeff King
2009-01-21 0:10 ` Johannes Schindelin
2009-01-21 0:15 ` Jeff King
2009-01-21 0:28 ` Johannes Schindelin
2009-01-21 0:37 ` Jeff King
2009-01-21 1:26 ` Johannes Schindelin
2009-01-21 1:36 ` [PATCH 2/2 v2] valgrind: ignore ldso errors Johannes Schindelin
2009-01-21 19:09 ` Jeff King
2009-01-21 20:51 ` Johannes Schindelin
2009-01-21 19:07 ` valgrind patches, was Re: What's cooking in git.git (Jan 2009, #04; Mon, 19) Jeff King
2009-01-21 22:17 ` Johannes Schindelin
2009-01-21 23:57 ` Jeff King
2009-01-22 0:42 ` Junio C Hamano
2009-01-22 0:59 ` Jeff King
2009-01-22 5:02 ` Johannes Schindelin
2009-01-22 5:39 ` Jeff King
2009-01-27 2:50 ` Valgrind updates Johannes Schindelin
2009-01-27 3:38 ` Linus Torvalds
2009-01-27 4:26 ` Johannes Schindelin
2009-01-27 4:46 ` Johannes Schindelin
2009-01-27 13:14 ` Mark Brown [this message]
2009-01-27 16:54 ` Johannes Schindelin
2009-01-27 18:55 ` Linus Torvalds
2009-01-27 21:52 ` Johannes Schindelin
2009-01-29 1:56 ` Linus Torvalds
2009-01-29 14:22 ` Johannes Schindelin
2009-01-28 23:06 ` Mark Adler
2009-01-28 23:27 ` Johannes Schindelin
2009-01-29 0:15 ` Mark Adler
2009-01-29 14:14 ` Johannes Schindelin
2009-01-29 14:54 ` Johannes Schindelin
2009-01-27 4:48 ` Jeff King
2009-01-27 9:31 ` Johannes Schindelin
2009-01-20 4:30 ` What's cooking in git.git (Jan 2009, #04; Mon, 19) Jeff King
2009-01-20 4:40 ` Jeff King
2009-01-20 7:04 ` Junio C Hamano
2009-01-20 7:55 ` Johannes Sixt
2009-01-20 14:18 ` Jeff King
2009-01-20 5:17 ` Boyd Stephen Smith Jr.
2009-01-20 8:57 ` Thomas Rast
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