1 files changed, 4 insertions, 0 deletions

diff --git a/src/dispnew.c b/src/dispnew.c
index 3f2ae3e6ad1..48a36f2006c 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -5904,8 +5904,12 @@ when TERMINAL is nil.  */)
         }
       out = tty->output;
     }
+  /* STRING might be very long, in which case fwrite could be
+     interrupted by SIGIO.  So we temporarily block SIGIO.  */
+  unrequest_sigio ();
   fwrite (SDATA (string), 1, SBYTES (string), out);
   fflush (out);
+  request_sigio ();
   unblock_input ();
   return Qnil;
 }