From ae5e48376422743341394c374be3732808d789cb Mon Sep 17 00:00:00 2001
From: Marek Safar <marek.safar@gmail.com>
Date: Thu, 13 Apr 2017 17:54:47 +0200
Subject: [PATCH] [linker] Update linker to recognize debug async notification
 methods. Fixes #55037 (#2004)

---
 tools/linker/MobileMarkStep.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tools/linker/MobileMarkStep.cs b/tools/linker/MobileMarkStep.cs
index 1e41495f0f14..f7b2dbe02b27 100644
--- a/tools/linker/MobileMarkStep.cs
+++ b/tools/linker/MobileMarkStep.cs
@@ -259,6 +259,19 @@ void MarkMetadata (IMetadataTokenProvider tp)
 		void ProcessCorlib (TypeDefinition type)
 		{
 			switch (type.Namespace) {
+			case "System.Runtime.CompilerServices.AsyncTaskMethodBuilder":
+				if (DebugBuild)
+					MarkNamedMethod (type, "SetNotificationForWaitCompletion");
+				break;
+			case "System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1":
+				if (DebugBuild)
+					MarkNamedMethod (type, "SetNotificationForWaitCompletion");
+				break;
+			case "System.Threading.Tasks.Task":
+				if (DebugBuild)
+					MarkNamedMethod (type, "NotifyDebuggerOfWaitCompletion");
+				break;
+
 			case "System.Security.Cryptography":
 				switch (type.Name) {
 				case "Aes":