From 05f6f8d401518fdf1401cd0f013eaa8498d587d0 Mon Sep 17 00:00:00 2001
From: Jon Shallow <supjps-libcoap@jpshallow.com>
Date: Fri, 13 Nov 2020 17:00:19 +0000
Subject: [PATCH] cmdline_read_user: Fix NULL terminating code

Add indirection to pointer when NULL terminating the 'user' variable in
cmdline_read_user().
---
 examples/client.c      | 2 +-
 examples/coap-server.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/client.c b/examples/client.c
index 618740ad..a28e15e8 100644
--- a/examples/client.c
+++ b/examples/client.c
@@ -1306,7 +1306,7 @@ cmdline_read_user(char *arg, unsigned char **buf, size_t maxlen) {
   if (len) {
     *buf = (unsigned char *)arg;
     /* len is the size or less, so 0 terminate to maxlen */
-    buf[len] = '\000';
+    (*buf)[len] = '\000';
   }
   /* 0 length Identity is valid */
   return len;
diff --git a/examples/coap-server.c b/examples/coap-server.c
index a2505e46..fcabd6fc 100644
--- a/examples/coap-server.c
+++ b/examples/coap-server.c
@@ -2222,7 +2222,7 @@ cmdline_read_user(char *arg, unsigned char **buf, size_t maxlen) {
   if (len) {
     *buf = (unsigned char *)arg;
     /* len is the size or less, so 0 terminate to maxlen */
-    buf[len] = '\000';
+    (*buf)[len] = '\000';
   }
   /* 0 length Identity is valid */
   return len;