From 4c6c73468a8d8a4724c7d122290c33b13a4174f5 Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>
Date: Sat, 25 Jul 2020 19:54:02 +0200
Subject: [PATCH] mescc: Mes C Library: Prepare for M2-Planet: dup.

* lib/linux/dup.c (dup): Prepare for M2-Planet.
---
 lib/linux/dup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/linux/dup.c b/lib/linux/dup.c
index 02d01283..9237ef97 100644
--- a/lib/linux/dup.c
+++ b/lib/linux/dup.c
@@ -24,5 +24,6 @@
 int
 dup (int old)
 {
-  return _sys_call1 (SYS_dup, (int) old);
+  long long_old = old;
+  return _sys_call1 (SYS_dup, long_old);
 }