Subject: Re: [PATCH] pretty.c: make git_pretty_formats_config return -1 on git_config_string failure

From: Matthieu Moy <[email-masked]>
Date: Mon, 04 Aug 2014 21:49:51 +0200

Eric Sunshine <[email-masked]> writes:

> On Mon, Aug 4, 2014 at 11:45 AM, Matthieu Moy
> <[email-masked]> wrote:
>> Tanay Abhra <[email-masked]> writes:
>>
>>> `git_pretty_formats_config()` continues without checking git_config_string's
>>> return value which can lead to a SEGFAULT.
>>
>> Indeed, without the patch:
>>
>> $ git -c pretty.my= log --pretty=my
>> error: Missing value for 'pretty.my'
>> zsh: segmentation fault  git -c pretty.my= log --pretty=my
>
> This probably should be formalized as a proper test and included with
> Tanay's patch.

Not sure it's worth the trouble: the bug corresponds to a
mis-application of a pattern used in tens of places in Git's code
(basically, each call to git_config_string, 50 callsites). Testing this
particular case does not ensure non-regression, and testing all
occurences of the pattern would be overkill IMHO.

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/