From 8d2a902945ef97f28152c3d5a68bb974809c8539 Mon Sep 17 00:00:00 2001
From: Maya Rashish <maya@NetBSD.org>
Date: Sun, 17 Feb 2019 08:34:20 +0200
Subject: [PATCH] freebsd: fix pointer cast in mmap

---
 std/os/freebsd/index.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/std/os/freebsd/index.zig b/std/os/freebsd/index.zig
index a3ab5e774..48c0ea5b1 100644
--- a/std/os/freebsd/index.zig
+++ b/std/os/freebsd/index.zig
@@ -617,7 +617,7 @@ pub fn mkdir(path: [*]const u8, mode: u32) usize {
 
 pub fn mmap(address: ?[*]u8, length: usize, prot: usize, flags: u32, fd: i32, offset: isize) usize {
     const ptr_result = c.mmap(
-        @ptrCast(*c_void, address),
+        @ptrCast(?*c_void, address),
         length,
         @bitCast(c_int, @intCast(c_uint, prot)),
         @bitCast(c_int, c_uint(flags)),