diff options
| -rw-r--r-- | libavcodec/assdec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/assdec.c b/libavcodec/assdec.c index 3178f29..f0b1069 100644 --- a/libavcodec/assdec.c +++ b/libavcodec/assdec.c @@ -31,7 +31,8 @@ static av_cold int ass_decode_init(AVCodecContext *avctx) avctx->subtitle_header = av_malloc(avctx->extradata_size + 1); if (!avctx->subtitle_header) return AVERROR(ENOMEM); - memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size); + if (avctx->extradata_size) + memcpy(avctx->subtitle_header, avctx->extradata, avctx->extradata_size); avctx->subtitle_header[avctx->extradata_size] = 0; avctx->subtitle_header_size = avctx->extradata_size; return 0; |
