gentoo-overlay/net-analyzer/packit/files/packit-1.0-noopt.patch

--- a/src/main.c
+++ b/src/main.c
@@ -201,6 +201,7 @@
 #ifdef DEBUG
     fprintf(stdout, "DEBUG: parse_inject\n");
 #endif
+    if (!opts) print_usage();
 
     while((opt = getopt(argc, argv, opts)) != -1)
     {