[FFmpeg-devel] [PATCH 05/10] avformat/hls: fix leak of variant when dynarray_add fail

[Steven Liu]

Zhao Zhili <quinkblack at foxmail.com> 于2022年4月12日周二 16:16写道：
>
> ---
>  libavformat/hls.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/libavformat/hls.c b/libavformat/hls.c
> index d5c3009d07..b5cdf158c6 100644
> --- a/libavformat/hls.c
> +++ b/libavformat/hls.c
> @@ -366,8 +366,16 @@ static struct variant *new_variant(HLSContext *c, struct variant_info *info,
>          strcpy(var->subtitles_group, info->subtitles);
>      }
>
> -    dynarray_add(&c->variants, &c->n_variants, var);
> -    dynarray_add(&var->playlists, &var->n_playlists, pls);
> +    if (av_dynarray_add_nofree(&var->playlists, &var->n_playlists, pls) < 0) {
> +        /* Don't free pls since it's not owned by variant */
> +        av_free(var);
> +        return NULL;
> +    }
> +    if (av_dynarray_add_nofree(&c->variants, &c->n_variants, var) < 0) {
> +        av_free(var->playlists);
> +        av_free(var);
Why don't use av_freep about these contexts?
> +        return NULL;
> +    }
>      return var;
>  }
>
> --
> 2.31.1
>
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Thanks
Steven