(update_frame): Make preempt_count positive.

Defend against negative baud_rate.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/dispnew.c b/src/dispnew.c
index e9c7521494a..a5f35362f1c 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -955,6 +955,9 @@ update_frame (f, force, inhibit_hairy_id)
   register int downto, leftmost;
 #endif
 
+  if (preempt_count <= 0)
+    preempt_count = 1;
+
   if (FRAME_HEIGHT (f) == 0) abort (); /* Some bug zeros some core */
 
   detect_input_pending ();
@@ -1025,7 +1028,8 @@ update_frame (f, force, inhibit_hairy_id)
                         outq = PENDING_OUTPUT_COUNT (stdout);
 #endif
                       outq *= 10;
-                      sleep (outq / baud_rate);
+                      if (baud_rate > 0)
+                        sleep (outq / baud_rate);
                     }
                 }
               if ((i - 1) % preempt_count == 0)