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From: Brandon Casey <drafnel@gmail.com>
To: Jeff King <peff@peff.net>
Cc: "git@vger.kernel.org" <git@vger.kernel.org>
Subject: Re: [PATCH 4/4] pack-revindex: radix-sort the revindex
Date: Mon, 8 Jul 2013 14:35:10 -0700	[thread overview]
Message-ID: <CA+sFfMfHYkLc1rAnMKWGiGtH9kOC11D9CqpAsFXpeE_VBY0otA@mail.gmail.com> (raw)
In-Reply-To: <CA+sFfMfQcnx+OGNd+v7NJC5zSXg2OR1QiLyRSqDjXD0zb4mvtA@mail.gmail.com>

On Mon, Jul 8, 2013 at 1:50 PM, Brandon Casey <drafnel@gmail.com> wrote:
> On Sun, Jul 7, 2013 at 3:14 AM, Jeff King <peff@peff.net> wrote:

>> diff --git a/pack-revindex.c b/pack-revindex.c
>> index 77a0465..d2adf36 100644
>> --- a/pack-revindex.c
>> +++ b/pack-revindex.c
>> @@ -59,11 +59,78 @@ static int cmp_offset(const void *a_, const void *b_)
>>         /* revindex elements are lazily initialized */
>>  }
>>
>> -static int cmp_offset(const void *a_, const void *b_)
>> +/*
>> + * This is a least-significant-digit radix sort using a 16-bit "digit".
>> + */
>> +static void sort_revindex(struct revindex_entry *entries, int n, off_t max)
>
> If 'n' is the number of objects in the pack, shouldn't it be unsigned?
>
> The data type for struct packed_git.num_objects is uint32_t.  Looks
> like create_pack_revindex uses the wrong datatype when it captures
> num_objects in the int num_ent and passes it to sort_revindex.  So, it
> looks like that function needs to be updated too.

Hmm.  It seems more than just create_pack_revindex holds num_objects
in a signed int.  Don't we support 4G objects in packs?

find_pack_revindex uses a signed int for the index variables in its
binary search which means it will fail when num_objects >= 2^31.

-Brandon

  reply	other threads:[~2013-07-08 21:35 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-07 10:01 [RFC/PATCH 0/4] cat-file --batch-disk-sizes Jeff King
2013-07-07 10:03 ` [PATCH 1/4] zero-initialize object_info structs Jeff King
2013-07-07 17:34   ` Junio C Hamano
2013-07-07 10:04 ` [PATCH 2/4] teach sha1_object_info_extended a "disk_size" query Jeff King
2013-07-07 10:09 ` [PATCH 3/4] cat-file: add --batch-disk-sizes option Jeff King
2013-07-07 17:49   ` Junio C Hamano
2013-07-07 18:19     ` Jeff King
2013-07-08 11:04     ` Duy Nguyen
2013-07-08 12:00       ` Ramkumar Ramachandra
2013-07-08 13:13         ` Duy Nguyen
2013-07-08 13:37           ` Ramkumar Ramachandra
2013-07-09  2:55             ` Duy Nguyen
2013-07-09 10:32               ` Ramkumar Ramachandra
2013-07-10 11:16             ` Jeff King
2013-07-08 16:40           ` Junio C Hamano
2013-07-10 11:04     ` Jeff King
2013-07-11 16:35       ` Junio C Hamano
2013-07-07 21:15   ` brian m. carlson
2013-07-10 10:57     ` Jeff King
2013-07-07 10:14 ` [PATCH 4/4] pack-revindex: radix-sort the revindex Jeff King
2013-07-07 23:52   ` Shawn Pearce
2013-07-08  7:57     ` Jeff King
2013-07-08 15:38       ` Shawn Pearce
2013-07-08 20:50   ` Brandon Casey
2013-07-08 21:35     ` Brandon Casey [this message]
2013-07-10 10:57       ` Jeff King
2013-07-10 10:52     ` Jeff King
2013-07-10 11:34 ` [PATCHv2 00/10] cat-file formats/on-disk sizes Jeff King
2013-07-10 11:35   ` [PATCH 01/10] zero-initialize object_info structs Jeff King
2013-07-10 11:35   ` [PATCH 02/10] teach sha1_object_info_extended a "disk_size" query Jeff King
2013-07-10 11:36   ` [PATCH 03/10] t1006: modernize output comparisons Jeff King
2013-07-10 11:38   ` [PATCH 04/10] cat-file: teach --batch to stream blob objects Jeff King
2013-07-10 11:38   ` [PATCH 05/10] cat-file: refactor --batch option parsing Jeff King
2013-07-10 11:45   ` [PATCH 06/10] cat-file: add --batch-check=<format> Jeff King
2013-07-10 11:57     ` Eric Sunshine
2013-07-10 14:51     ` Ramkumar Ramachandra
2013-07-11 11:24       ` Jeff King
2013-07-10 11:46   ` [PATCH 07/10] cat-file: add %(objectsize:disk) format atom Jeff King
2013-07-10 11:48   ` [PATCH 08/10] cat-file: split --batch input lines on whitespace Jeff King
2013-07-10 15:29     ` Ramkumar Ramachandra
2013-07-11 11:36       ` Jeff King
2013-07-11 17:42         ` Junio C Hamano
2013-07-11 20:45         ` [PATCHv3 " Jeff King
2013-07-10 11:50   ` [PATCH 09/10] pack-revindex: use unsigned to store number of objects Jeff King
2013-07-10 11:55   ` [PATCH 10/10] pack-revindex: radix-sort the revindex Jeff King
2013-07-10 12:00     ` Jeff King
2013-07-10 13:17     ` Ramkumar Ramachandra
2013-07-11 11:03       ` Jeff King
2013-07-10 17:10     ` Brandon Casey
2013-07-11 11:17       ` Jeff King
2013-07-11 12:16     ` [PATCHv3 " Jeff King
2013-07-11 21:12       ` Brandon Casey

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