(init_sys_modes): Don't set up sigio here if window system.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index ddee0b4560a..cb8ee1cfaae 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1318,7 +1318,8 @@ init_sys_modes ()
 #ifdef F_SETFL
 #ifndef F_SETOWN_BUG
 #ifdef F_GETOWN         /* F_SETFL does not imply existence of F_GETOWN */
-  if (interrupt_input)
+  if (interrupt_input
+      && ! read_socket_hook && EQ (Vwindow_system, Qnil))
     {
       old_fcntl_owner = fcntl (input_fd, F_GETOWN, 0);
       fcntl (input_fd, F_SETOWN, getpid ());