diff -up netkit-ftp-0.17/ftp/ftp.c.orig netkit-ftp-0.17/ftp/ftp.c

diff -up netkit-ftp-0.17/ftp/ftp_var.h.orig netkit-ftp-0.17/ftp/ftp_var.h

diff -up netkit-ftp-0.17/ftp/main.c.orig netkit-ftp-0.17/ftp/main.c

--- netkit-ftp-0.17/ftp/main.c.orig	2018-09-03 16:49:16.459000000 +0200

+++ netkit-ftp-0.17/ftp/main.c	2018-09-03 17:00:14.853452345 +0200

@@ -399,7 +399,7 @@ int slrflag;

 char **

 makeargv(int *pargc, char **parg)

 {

-	static char *rargv[20];

+	static char *rargv[LINELEN];

 	int rargc = 0;

 	char **argp;

@@ -407,7 +407,7 @@ makeargv(int *pargc, char **parg)

 	stringbase = line;		/* scan from first of buffer */

 	argbase = argbuf;		/* store from first of buffer */

 	slrflag = 0;

-	while ((*argp++ = slurpstring())!=NULL)

+	while ((rargc < LINELEN) && (*argp++ = slurpstring())!=NULL)

 		rargc++;

 	*pargc = rargc;