avutil/file: add more check befor destory the buffer

add more check befor destory the buffer Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2019-08-30 09:09:16 +08:00 · 2019-08-30 09:09:16 +08:00 · 95780f4dcb
parent 7ce15b1d43
commit 95780f4dcb
1 changed files with 1 additions and 1 deletions
--- a/libavutil/file.c
+++ b/libavutil/file.c
@ -143,7 +143,7 @@ out:

 void av_file_unmap(uint8_t *bufptr, size_t size)
 {
-    if (!size)
+    if (!size || !bufptr)
        return;
 #if HAVE_MMAP
    munmap(bufptr, size);