[FFmpeg-devel] [PATCH v2] avformat/hls: use av_strlcopy instead of strncpy

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Mon Oct 30 02:23:07 EET 2023


Leo Izen:
> Avoids a -Wstringop-truncation warning by using av_strlcopy instead of
> strncpy.
> 
> Signed-off-by: Leo Izen <leo.izen at gmail.com>
> ---
>  libavformat/hls.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/hls.c b/libavformat/hls.c
> index f5f549b24d..39440176c9 100644
> --- a/libavformat/hls.c
> +++ b/libavformat/hls.c
> @@ -543,8 +543,8 @@ static struct rendition *new_rendition(HLSContext *c, struct rendition_info *inf
>          int langlen = strlen(rend->language);
>          if (langlen < sizeof(rend->language) - 3) {
>              rend->language[langlen] = ',';
> -            strncpy(rend->language + langlen + 1, info->assoc_language,
> -                    sizeof(rend->language) - langlen - 2);
> +            av_strlcpy(rend->language + langlen + 1, info->assoc_language,
> +                    sizeof(rend->language) - langlen - 1);
>          }
>      }
>  

As I said before: You are merely hiding the truncation issue instead of
fixing it.

- Andreas



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