From 06fbffbab3d4c0ff7205984a03feec0b2a561806 Mon Sep 17 00:00:00 2001
From: Sejong Oh <sejooh@microsoft.com>
Date: Fri, 1 Apr 2016 16:09:00 -0700
Subject: [PATCH] Fix singlinkgen test.

If the address of SingLink is stored at stack, GC.Collect() cannot collect
the object since the address variable is still alive at stack.


Commit migrated from https://github.com/dotnet/coreclr/commit/030136228abccb8b6d4737f92358bec8a9a50c09
---
 .../src/GC/Scenarios/SingLinkList/singlinkgen.cs      | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/src/coreclr/tests/src/GC/Scenarios/SingLinkList/singlinkgen.cs b/src/coreclr/tests/src/GC/Scenarios/SingLinkList/singlinkgen.cs
index 028a1a3..db68ab7 100644
--- a/src/coreclr/tests/src/GC/Scenarios/SingLinkList/singlinkgen.cs
+++ b/src/coreclr/tests/src/GC/Scenarios/SingLinkList/singlinkgen.cs
@@ -12,6 +12,7 @@
 
 namespace SingLink {
     using System;
+    using System.Runtime.CompilerServices;
 
     public class SingLinkGen
     {
@@ -72,17 +73,26 @@ namespace SingLink {
             Console.WriteLine(retVal);
             return ( retVal == iRep*iObj);
         }
-
+        
+        [MethodImplAttribute(MethodImplOptions.NoInlining)]
+        void Create(int iObj) {
+            Mv_Sing = new SingLink(iObj);
+        }
+        
+        [MethodImplAttribute(MethodImplOptions.NoInlining)]
+        void Delete() {
+            Mv_Sing = null;
+            GC.Collect();
+        }
 
         public int SetLink(int iRep, int iObj)
         {
             for(int i=0; i<iRep; i++)
             {
-                Mv_Sing = new SingLink(iObj);
+                Create(iObj);
                 //Console.WriteLine("after number {0} singlink is set: {1}", i, GC.GetTotalMemory(false) );
 
-                Mv_Sing = null;
-                GC.Collect();
+                Delete();
                 GC.WaitForPendingFinalizers();
 
             }
@@ -147,3 +157,4 @@ namespace SingLink {
         }
     }
 }
+
-- 
2.7.4