From: Justin Van Patten <jvp@justinvp.com>
Date: Thu, 10 Nov 2016 04:05:11 +0000 (-0800)
Subject: Avoid repeated delegate allocations in FileStream.FlushAsync (#8048)
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d19d2e7d57deee034650a8cc078c4ad93ce03c8;p=platform%2Fupstream%2Fcoreclr.git

Avoid repeated delegate allocations in FileStream.FlushAsync (#8048)

Avoid the `Action<object>` allocation on each invocation of
`FileStream.FlushAsync` on Windows. This change makes the Win32
implementation match Unix.
---

diff --git a/src/mscorlib/corefx/System/IO/FileStream.Win32.cs b/src/mscorlib/corefx/System/IO/FileStream.Win32.cs
index 8b9adb5436..350d948b00 100644
--- a/src/mscorlib/corefx/System/IO/FileStream.Win32.cs
+++ b/src/mscorlib/corefx/System/IO/FileStream.Win32.cs
@@ -1715,7 +1715,7 @@ namespace System.IO
             if (CanWrite)
             {
                 return Task.Factory.StartNew(
-                    state => FlushOSBuffer(),
+                    state => ((FileStream)state).FlushOSBuffer(),
                     this,
                     cancellationToken,
                     TaskCreationOptions.DenyChildAttach,