@@ -465,7 +465,9 @@ static void fill_buffer(AVIOContext *s)

     /* make buffer smaller in case it ended up large after probing */

     if (s->read_packet && s->orig_buffer_size && s->buffer_size > s->orig_buffer_size) {

         if (dst == s->buffer) {

-            ffio_set_buf_size(s, s->orig_buffer_size);

+            int ret = ffio_set_buf_size(s, s->orig_buffer_size);

+            if (ret < 0)

+                av_log(s, AV_LOG_WARNING, "Failed to decrease buffer size\n");

             s->checksum_ptr = dst = s->buffer;

         }