From 3570a62b3236c359f0ff36ada921df1641a5e3db Mon Sep 17 00:00:00 2001
From: Matthew Fredrickson <creslin@digium.com>
Date: Fri, 15 Jun 2018 15:21:27 -0500
Subject: [PATCH] menuselect/menuselect_curses: Resolves sprintf usage error

Acccording to the man page for sprintf, using the same buffer for
output as one used as an input yields undefined behavior.
This patch should work around this problem.

ASTERISK-27903
Reported-by: Alexander Traud

Change-Id: I2213dcb454aff26457e2e4cc9c6821276463ae3a
---
 menuselect/menuselect_curses.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/menuselect/menuselect_curses.c b/menuselect/menuselect_curses.c
index 97f1f17149..0917eba62b 100644
--- a/menuselect/menuselect_curses.c
+++ b/menuselect/menuselect_curses.c
@@ -227,7 +227,7 @@ static void display_mem_info(WINDOW *menu, struct member *mem, int start_y, int
 				buf[0] = '\0';
 				new_line = 1;
 			}
-			sprintf(buf, "%s%*.*s%s", buf, new_line ? 0 : 1, new_line ? 0 : 1, " ", word);
+			sprintf(buf + strlen(buf), "%*.*s%s", new_line ? 0 : 1, new_line ? 0 : 1, " ", word);
 			new_line = 0;
 		}
 		if (strlen(buf)) {