1 files changed, 1 insertions, 0 deletions

diff --git a/threads/thread.c b/threads/thread.c
index 358d3a1..61ab5d9 100644
--- a/threads/thread.c
+++ b/threads/thread.c
@@ -380,6 +380,7 @@ void
 thread_other_set_priority (struct thread *t, int new_priority)
 {
   ASSERT (is_thread (t));
+  ASSERT (new_priority >= PRI_MIN && new_priority <= PRI_MAX);
 
   if (t->priority == new_priority)
     return;