From a66c72749a113cc6b2423d96d1f1f7c692d48ff5 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Tue, 3 Mar 2020 03:10:56 -0500
Subject: [PATCH] more macos fixes

---
 lib/std/os.zig | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/std/os.zig b/lib/std/os.zig
index 8913a1599f5f843b544169a3f67f2d15832bdb9f..558dea4524569c5d9452602f003344eaff8b927d 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -3714,11 +3714,12 @@ pub fn sendfile(
                 hdtr = &hdtr_data;
             }
 
-            const adjusted_count = math.min(count, max_count);
+            const adjusted_count = math.min(count, @as(u63, max_count));
 
             while (true) {
                 var sbytes: off_t = adjusted_count;
-                const err = errno(system.sendfile(out_fd, in_fd, in_offset, &sbytes, hdtr, flags));
+                const signed_offset = @bitCast(i64, in_offset);
+                const err = errno(system.sendfile(out_fd, in_fd, signed_offset, &sbytes, hdtr, flags));
                 const amt = @bitCast(usize, sbytes);
                 switch (err) {
                     0 => return amt,
@@ -3745,7 +3746,7 @@ pub fn sendfile(
                     EPIPE => return error.BrokenPipe,
 
                     else => {
-                        _ = unexpectedErrno(err);
+                        const discard = unexpectedErrno(err);
                         if (amt != 0) {
                             return amt;
                         } else {
-- 
2.54.0