From 1cc7e2630fecac0b91e28f402a02f7e268c9d156 Mon Sep 17 00:00:00 2001 From: Jun Zhao Date: Fri, 10 May 2019 22:28:38 +0800 Subject: [PATCH] lavc/pngenc: check malloc fail before using the pointer Need to check malloc fail before using the pointer Signed-off-by: Jun Zhao --- libavcodec/pngenc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c index 69b4495404..d4d8dc8b5e 100644 --- a/libavcodec/pngenc.c +++ b/libavcodec/pngenc.c @@ -748,11 +748,11 @@ static int apng_encode_frame(AVCodecContext *avctx, const AVFrame *pict, original_bytestream_end = s->bytestream_end; temp_bytestream = av_malloc(original_bytestream_end - original_bytestream); - temp_bytestream_end = temp_bytestream + (original_bytestream_end - original_bytestream); if (!temp_bytestream) { ret = AVERROR(ENOMEM); goto fail; } + temp_bytestream_end = temp_bytestream + (original_bytestream_end - original_bytestream); for (last_fctl_chunk.dispose_op = 0; last_fctl_chunk.dispose_op < 3; ++last_fctl_chunk.dispose_op) { // 0: APNG_DISPOSE_OP_NONE