From a27a8561e9387b22d7c694af924e8f2ed0f17290 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 15 Mar 2020 17:26:29 -0400
Subject: [PATCH] adjust renameatW to always supply dest root dir

this fixes tests for wine
---
 lib/std/mem.zig | 2 +-
 lib/std/os.zig  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/std/mem.zig b/lib/std/mem.zig
index 9d2232d3eb..438c15c2eb 100644
--- a/lib/std/mem.zig
+++ b/lib/std/mem.zig
@@ -116,7 +116,7 @@ pub const Allocator = struct {
     pub fn allocSentinel(self: *Allocator, comptime Elem: type, n: usize, comptime sentinel: Elem) Error![:sentinel]Elem {
         var ptr = try self.alloc(Elem, n + 1);
         ptr[n] = sentinel;
-        return ptr[0 .. n :sentinel];
+        return ptr[0..n :sentinel];
     }
 
     pub fn alignedAlloc(
diff --git a/lib/std/os.zig b/lib/std/os.zig
index 5a56224e61..377f7d7077 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -1664,7 +1664,7 @@ pub fn renameatW(
 
     rename_info.* = .{
         .ReplaceIfExists = ReplaceIfExists,
-        .RootDirectory = if (old_dir_fd == new_dir_fd or std.fs.path.isAbsoluteWindowsW(new_path_w)) null else new_dir_fd,
+        .RootDirectory = if (std.fs.path.isAbsoluteWindowsW(new_path_w)) null else new_dir_fd,
         .FileNameLength = @intCast(u32, new_path.len * 2), // already checked error.NameTooLong
         .FileName = undefined,
     };