From 8c2bb10ddfef1f151b9455d152c9aca91140a4b0 Mon Sep 17 00:00:00 2001 From: Vitaly Buka Date: Sun, 20 Aug 2017 11:56:47 -0700 Subject: avcodec/utils: Fix signed integer overflow in rc_initial_buffer_occupancy initialization Signed integer overflow is undefined behavior. Detected with clang and -fsanitize=signed-integer-overflow Signed-off-by: Vitaly Buka Signed-off-by: Michael Niedermayer --- libavcodec/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec') diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 1336e921c9..1b8ad1d200 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -971,7 +971,7 @@ FF_ENABLE_DEPRECATION_WARNINGS } if (!avctx->rc_initial_buffer_occupancy) - avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; + avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4; if (avctx->ticks_per_frame && avctx->time_base.num && avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) { -- cgit v1.2.3