diff -up tcp_wrappers_7.6/misc.c.xgets tcp_wrappers_7.6/misc.c
--- tcp_wrappers_7.6/misc.c.xgets	2011-08-15 05:50:26.403091995 -0400
+++ tcp_wrappers_7.6/misc.c	2011-08-15 05:51:02.289091985 -0400
@@ -35,7 +35,7 @@ FILE   *fp;
     int     got;
     char   *start = ptr;
 
-    while (fgets(ptr, len, fp)) {
+    while (len && fgets(ptr, len, fp)) {
 	got = strlen(ptr);
 	if (got >= 1 && ptr[got - 1] == '\n') {
 	    tcpd_context.line++;