X-Git-Url: https://git.distorted.org.uk/~mdw/secnet/blobdiff_plain/fcbc59051841c6e76a6737acf8ccaac4afd98666..6fbd4b99bc50cf9cd54a1b6e2b2c96c4ba4a9b19:/secnet.c

diff --git a/secnet.c b/secnet.c
index 16fa198..f6931b5 100644
--- a/secnet.c
+++ b/secnet.c
@@ -1,5 +1,7 @@
 #include "secnet.h"
 #include <stdio.h>
+#include <assert.h>
+#include <limits.h>
 #include <string.h>
 #include <getopt.h>
 #include <errno.h>
@@ -230,6 +232,7 @@ void register_for_poll(void *st, beforepoll_fn *before,
     i->max_nfds=max_nfds;
     i->nfds=0;
     i->desc=desc;
+    assert(total_nfds < INT_MAX - max_nfds);
     total_nfds+=max_nfds;
     i->next=reg;
     reg=i;