[FFmpeg-devel] [PATCH 19/25] avcodec/utils: Remove always-true check
Andreas Rheinhardt
andreas.rheinhardt at gmail.com
Wed Sep 30 14:14:27 EEST 2020
Andreas Rheinhardt:
> The first thing avcodec_open2() allocates is the AVCodecInternal. If
> allocating it fails, a jump to end occurs; but if an error happens after
> its allocation, a jump to free_and_end happens which frees all
> allocations performed so far and then jumps to end. Yet free_and_end
> contained a check for AVCodecInternal (after having already dereferenced
> it to check whether ff_thread_free() needs to be called) which is of
> course always true. So remove it.
>
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
> ---
> libavcodec/utils.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/libavcodec/utils.c b/libavcodec/utils.c
> index 94b9e94584..8e7c3125aa 100644
> --- a/libavcodec/utils.c
> +++ b/libavcodec/utils.c
> @@ -1043,7 +1043,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
> av_dict_free(&tmp);
> av_freep(&avctx->priv_data);
> av_freep(&avctx->subtitle_header);
> - if (avci) {
> +
> av_frame_free(&avci->to_free);
> av_frame_free(&avci->compat_decode_frame);
> av_frame_free(&avci->buffer_frame);
> @@ -1056,7 +1056,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
> av_bsf_free(&avci->bsf);
>
> av_buffer_unref(&avci->pool);
> - }
> av_freep(&avci);
> avctx->internal = NULL;
> avctx->codec = NULL;
>
Will apply the rest of this patchset this evening unless there are
objections.
- Andreas
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