Add GC.KeepAlive to keep collectible ALC alive across usage. (dotnet/coreclr#22133)

Commit migrated from https://github.com/dotnet/coreclr/commit/ad8975dd4b064381e1560536b77e5dcfb3195c84

diff --git a/src/coreclr/tests/src/Interop/ICustomMarshaler/ConflictingNames/RunInALC.cs b/src/coreclr/tests/src/Interop/ICustomMarshaler/ConflictingNames/RunInALC.cs
index 1d61f2d..fdae979 100644 (file)
--- a/src/coreclr/tests/src/Interop/ICustomMarshaler/ConflictingNames/RunInALC.cs
+++ b/src/coreclr/tests/src/Interop/ICustomMarshaler/ConflictingNames/RunInALC.cs
@@ -46,6 +46,7 @@ public class RunInALC
         object instance = Activator.CreateInstance(inContextType);
         MethodInfo parseIntMethod = inContextType.GetMethod("ParseInt", BindingFlags.Instance | BindingFlags.Public);
         Assert.AreEqual(1234, (int)parseIntMethod.Invoke(instance, new object[]{"1234"}));
+        GC.KeepAlive(context);
     }
 }