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-rw-r--r--libavcodec/hevcdec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 97f9def809..1960c6a202 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -3221,7 +3221,7 @@ static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
}
} else {
/* verify the SEI checksum */
- if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded &&
+ if (avctx->err_recognition & AV_EF_CRCCHECK && s->ref && s->is_decoded &&
s->sei.picture_hash.is_md5) {
ret = verify_md5(s, s->ref->frame);
if (ret < 0 && avctx->err_recognition & AV_EF_EXPLODE) {