From 81931ba19aee66ac9e0d3df948858a42048453a5 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Tue, 13 Sep 1994 04:13:32 +0000
Subject: [PATCH] (gobble_input): Block SIGALRM if we are using it.

---
 src/keyboard.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/keyboard.c b/src/keyboard.c
index 96f0c651658..5eb05979717 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -3415,7 +3415,7 @@ get_input_pending (addr)
   *addr = !NILP (Vquit_flag) || readable_events ();
 }
 
-/* Interface to read_avail_input, blocking SIGIO if necessary.  */
+/* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary.  */
 
 int
 gobble_input (expected)
@@ -3431,6 +3431,16 @@ gobble_input (expected)
       sigsetmask (mask);
     }
   else
+#endif
+#ifdef POLL_FOR_INPUT
+  if (read_socket_hook && !interrupt_input && poll_suppress_count == 0)
+    {
+      SIGMASKTYPE mask;
+      mask = sigblockx (SIGALRM);
+      read_avail_input (expected);
+      sigsetmask (mask);
+    }
+  else
 #endif
     read_avail_input (expected);
 #endif
-- 
2.39.5