@@ -19,6 +19,8 @@

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  */

+

+#include "avassert.h"

 #include "common.h"

 #include "fifo.h"

@@ -144,6 +146,7 @@ int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,

 /** Discard data from the FIFO. */

 void av_fifo_drain(AVFifoBuffer *f, int size)

 {

+    av_assert2(av_fifo_size(f) >= size);

     f->rptr += size;

     if (f->rptr >= f->end)

         f->rptr -= f->end - f->buffer;