[FFmpeg-devel] [PATCH] avutil/video_enc_param: fix warning

[lance.lmwang at gmail.com]

From: Limin Wang <lance.lmwang at gmail.com>

warning: comparison is always false due to limited range of data type [-Wtype-limits]
Also nb_blocks is unsigned int, so nb_blocks * sizeof(AVVideoBlockParams) may overflow,
so force to size_t

Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
---
 libavutil/video_enc_params.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavutil/video_enc_params.c b/libavutil/video_enc_params.c
index c46c0f1..4a4c85f 100644
--- a/libavutil/video_enc_params.c
+++ b/libavutil/video_enc_params.c
@@ -33,8 +33,8 @@ AVVideoEncParams *av_video_enc_params_alloc(enum AVVideoEncParamsType type,
     size_t size;
 
     size = sizeof(*par);
-    if (nb_blocks > SIZE_MAX / sizeof(AVVideoBlockParams) ||
-        nb_blocks * sizeof(AVVideoBlockParams) > SIZE_MAX - size)
+    if (nb_blocks > UINT_MAX / sizeof(AVVideoBlockParams) ||
+        (size_t)nb_blocks * sizeof(AVVideoBlockParams) > SIZE_MAX - size)
         return NULL;
     size += sizeof(AVVideoBlockParams) * nb_blocks;
 
-- 
1.8.3.1