From 5c065e96880ce8872d60e097ffb719e640b95b84 Mon Sep 17 00:00:00 2001
From: Jelena Mirkovic <mirkovic@steellab.isi.edu>
Date: Mon, 28 Mar 2022 11:47:15 -0700
Subject: [PATCH] Fixed a bug

---
 amonsenss.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/amonsenss.cc b/amonsenss.cc
index 41e2a74..72500bc 100644
--- a/amonsenss.cc
+++ b/amonsenss.cc
@@ -1725,6 +1725,9 @@ double read_one_line(void* nf, char* format, char* line, u_char* p,  struct pcap
   if (!strcmp(format, "nf") || !strcmp(format, "ft") || !strcmp(format,"fr"))
     {
       char* s = fgets(line, MAXLINE, (FILE*) nf);
+      if (s == NULL)
+	return -1;
+      
       char tmpline[MAXLINE];
       strcpy(tmpline, line);