From 52f806bbe7852cf9005ff59022593b7362ac6fa8 Mon Sep 17 00:00:00 2001
From: Steve Bennett <steveb@workware.net.au>
Date: Mon, 1 Jan 2018 13:23:48 +1000
Subject: [PATCH] Add an assertion for fd_printf() buffer size

Signed-off-by: Steve Bennett <steveb@workware.net.au>
---
 linenoise.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/linenoise.c b/linenoise.c
index aee3447..f6b9442 100644
--- a/linenoise.c
+++ b/linenoise.c
@@ -127,6 +127,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <stdio.h>
+#include <assert.h>
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
@@ -290,6 +291,8 @@ static void fd_printf(int fd, const char *format, ...)
 
     va_start(args, format);
     n = vsnprintf(buf, sizeof(buf), format, args);
+    /* This will never happen because we are sure to use fd_printf() for short sequences */
+    assert(n < sizeof(buf));
     va_end(args);
     IGNORE_RC(write(fd, buf, n));
 }
-- 
2.44.0