[FFmpeg-cvslog] Make av_realloc(0) behave like our av_malloc(0)

[Daniel Verkamp]

On Sat, May 7, 2011 at 7:54 AM, Reimar Döffinger
<Reimar.Doeffinger at gmx.de> wrote:
>
>
> On 7 May 2011, at 16:23, git at videolan.org (Michael Niedermayer) wrote:
>
>> ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat May  7 15:28:07 2011 +0200| [91ff05f6ac5c65a6cd3701d5a7cdcfb6ccfd87e4] | committer: Michael Niedermayer
>>
>> Make av_realloc(0) behave like our av_malloc(0)
>> Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
>>
>>> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=91ff05f6ac5c65a6cd3701d5a7cdcfb6ccfd87e4
>> ---
>>
>> libavutil/mem.c |    2 +-
>> 1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/libavutil/mem.c b/libavutil/mem.c
>> index 965daa9..83e8c35 100644
>> --- a/libavutil/mem.c
>> +++ b/libavutil/mem.c
>> @@ -132,7 +132,7 @@ void *av_realloc(void *ptr, size_t size)
>>     diff= ((char*)ptr)[-1];
>>     return (char*)realloc((char*)ptr - diff, size + diff) + diff;
>> #else
>> -    return realloc(ptr, size);
>> +    return realloc(ptr, size + !size);
>> #endif
>
> Not sure if it's such a great idea, but I think you could
> use exactly the same code as in av_malloc to avoid doing
> something when not necessary.

Isn't realloc(ptr, 0) supposed to be free(ptr), or does that not apply
to av_realloc?