From cb3999cd83a3fbfbd79aaeef3a295aff46c9ea14 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Marie?= <semarie@users.noreply.github.com>
Date: Wed, 23 Dec 2015 11:24:11 +0100
Subject: [PATCH] switch from syscall(2) to getentropy(2)

use the `getentropy()` function instead of `syscall()` and
syscall-numbers.
---
 src/libstd/rand/os.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstd/rand/os.rs b/src/libstd/rand/os.rs
index 0ba0e01ce29..23a368a30a5 100644
--- a/src/libstd/rand/os.rs
+++ b/src/libstd/rand/os.rs
@@ -222,7 +222,7 @@ mod imp {
             // getentropy(2) permits a maximum buffer size of 256 bytes
             for s in v.chunks_mut(256) {
                 let ret = unsafe {
-                    libc::syscall(libc::NR_GETENTROPY, s.as_mut_ptr(), s.len())
+                    libc::getentropy(s.as_mut_ptr() as *mut libc::c_void, s.len())
                 };
                 if ret == -1 {
                     panic!("unexpected getentropy error: {}", errno());