Try to repro dotnet#85377 in CI

jkotas · Apr 26, 2023 · d8acbb5 · d8acbb5
1 parent 9f07f65
commit d8acbb5
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/src/coreclr/nativeaot/Runtime/thread.cpp b/src/coreclr/nativeaot/Runtime/thread.cpp
@@ -1146,7 +1146,7 @@ FORCEINLINE bool Thread::InlineTryFastReversePInvoke(ReversePInvokeFrame * pFram
         return false; // bad transition
     }
 
-    // this is an ordinary transition to managed code
+    // This is an ordinary transition to managed code
     // GC threads should not do that
     ASSERT(!IsGCSpecial());
 

diff --git a/...nteropServices.UnitTests/System/Runtime/InteropServices/Marshal/Common/COMWrappersImpl.cs b/...nteropServices.UnitTests/System/Runtime/InteropServices/Marshal/Common/COMWrappersImpl.cs
@@ -3,6 +3,7 @@
 
 using System.Collections;
 using System.Runtime.CompilerServices;
+using System.Threading;
 using Xunit;
 
 namespace System.Runtime.InteropServices.Tests.Common
@@ -39,5 +40,17 @@ protected override object CreateObject(IntPtr externalComObject, CreateObjectFla
 
         protected override void ReleaseObjects(IEnumerable objects)
             => throw new NotImplementedException();
+
+        [ModuleInitializer]
+        internal static void GcStress()
+        {
+            var t = new Thread(() => {
+                var a = new object[1_000_000];
+                var r = new Random();
+                for (;;) { a[r.Next(a.Length)] = new byte[r.Next(300)]; }
+            });
+            t.IsBackground = true;
+            t.Start();
+        }
     }
 }