(x_connection_signal): Set an alarm around XNoOp call.

1 files changed, 12 insertions, 1 deletions

diff --git a/src/xterm.c b/src/xterm.c
index c2e1e56d76c..6002f9cecc7 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -4650,13 +4650,24 @@ x_connection_signal (signalnum)	/* If we don't have an argument, */
 {
   x_connection_signal_dpyinfo = x_display_list;
 
+  stop_polling ();
   sigunblock (SIGPIPE);
 
   while (x_connection_signal_dpyinfo)
     {
       signal (SIGPIPE, x_connection_signal_1);
-
+      signal (SIGALRM, x_connection_signal_1);
+
+      /* According to Jim Campbell <jec@murzim.ca.boeing.com>,
+         On Solaris 2.4, XNoOp can hang when the connection
+         has already died.  Since XNoOp should not wait,
+         let's assume that if it hangs for 3 seconds
+         that means the connection is dead.
+         This is a kludge, but I don't see any other way that works.  */
+      alarm (3);
       XNoOp (x_connection_signal_dpyinfo->display);
+      alarm (0);
+
       XSync (x_connection_signal_dpyinfo->display, False);
 
       /* Each time we get here, cycle through the displays now open.  */