From d0caba8b42f767ce7ff83ef969819906e5754999 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Sat, 11 Jul 2026 22:06:28 +0000
Subject: [PATCH] Check for error from fselect()

---
 ncat/ncat_listen.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ncat/ncat_listen.c b/ncat/ncat_listen.c
index 2064eaa42..ead17cbb4 100644
--- a/ncat/ncat_listen.c
+++ b/ncat/ncat_listen.c
@@ -342,6 +342,13 @@ int ncat_listen()
 
         fds_ready = fselect(client_fdlist.fdmax + 1, &readfds, &writefds, NULL, tvp);
 
+        if (fds_ready < 0) {
+          int e = socket_errno();
+          if (e != EINTR) {
+            bye("fselect error %d: %s", e, socket_strerror(e));
+          }
+        }
+
         if (o.debug > 1)
             logdebug("select returned %d fds ready\n", fds_ready);