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

[Reimar Döffinger]

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.