From: simplejackcoder <40817635+simplejackcoder@users.noreply.github.com>
Date: Thu, 28 Mar 2019 15:20:15 +0000 (-0700)
Subject: GetPinnableReference on String.cs (#23428)
X-Git-Tag: accepted/tizen/unified/20190813.215958~54^2~61
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7c4717e01baf2cc5f4f6a73fc56109b527311c2d;p=platform%2Fupstream%2Fcoreclr.git

GetPinnableReference on String.cs (#23428)

* GetPinnableReference on String.cs

* Add attributes for debugger and performance
---

diff --git a/src/System.Private.CoreLib/shared/System/String.cs b/src/System.Private.CoreLib/shared/System/String.cs
index 1a1b80c..3ae88bb 100644
--- a/src/System.Private.CoreLib/shared/System/String.cs
+++ b/src/System.Private.CoreLib/shared/System/String.cs
@@ -473,6 +473,13 @@ namespace System
             return true;
         }
 
+        /// <summary>
+        /// Returns a reference to the first element of the String. If the string is null, an access will throw a NullReferenceException.
+        /// </summary>
+        [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+        [NonVersionable]
+        public ref readonly char GetPinnableReference() => ref _firstChar;
+
         internal ref char GetRawStringData() => ref _firstChar;
 
         // Helper for encodings so they can talk to our buffer directly