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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
/*
AV in mscorwks!WKS::gc_heap::mark_object_simple1
*/
using System;
class ByRef_GCHole
{
static volatile int returnCode = 0;
~ByRef_GCHole()
{
if (returnCode == 0)
{
Console.WriteLine("FAILED: Collected the wrong object!");
returnCode = 99;
}
}
static void DoSomething(ref ByRef_GCHole p)
{
try
{
if (returnCode == 0)
{
Console.WriteLine(p.ToString() + "passed");
returnCode = 100;
}
}
catch
{
Console.WriteLine("FAILED: Object is invalid!");
returnCode = 98;
}
}
static int Main()
{
ByRef_GCHole h;
// NOTE: After talking to Grant, the if else below is necessary, because a if/else is
// required for the problem to occur and the jit should not know which branch
// is going to be executed. That's where the volatile static int comes into play.
if (returnCode == 0)
{
h = new ByRef_GCHole();
}
else
{
h = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
DoSomething(ref h);
return returnCode;
}
}
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