Re: [PATCH] packfile: Correct zlib buffer handling

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Duy Nguyen <pclouds@xxxxxxxxx> writes:

> On Sun, May 27, 2018 at 1:57 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
>> Duy Nguyen <pclouds@xxxxxxxxx> writes:
>>
>>> On Sat, May 26, 2018 at 12:56 AM, Jeremy Linton <lintonrjeremy@xxxxxxxxx> wrote:
>>>> @@ -1416,7 +1416,7 @@ static void *unpack_compressed_entry(struct packed_git *p,
>>>>                 return NULL;
>>>>         memset(&stream, 0, sizeof(stream));
>>>>         stream.next_out = buffer;
>>>> -       stream.avail_out = size + 1;
>>>> +       stream.avail_out = size;
>>>
>>> You may want to include in your commit message a reference to
>>> 39eea7bdd9 (Fix incorrect error check while reading deflated pack data
>>> - 2009-10-21) which adds this plus one with a fascinating story
>>> behind.
>>
>> A bit puzzled---are you saying that this recent patch breaks the old
>> fix and must be done in some other way?
>
> No. I actually wanted to answer that question when I tried to track
> down the commit that adds " + 1" but I did not spend enough time to
> understand the old problem. I guess your puzzle means you didn't think
> it would break anything, which is good.

No it merely means I am puzzled how the posted patch that goes
directly opposite to what an earlier "fix" did is a correct solution
to anything X-<.



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