Nov 30, 2022 · Nov 29, 2022 · Nov 30, 2022
diff --git a/CHANGELOG.md b/CHANGELOG.md

 ### Fixed

 - Fixed error occuring when inheriting a class containing a virtual generic method.

 ## [3.0.1](https://github.com/pythonnet/pythonnet/releases/tag/v3.0.1) - 2022-11-03

 ### Added
diff --git a/src/runtime/Types/ClassDerived.cs b/src/runtime/Types/ClassDerived.cs
            foreach (MethodInfo method in methods)
            {
                if (!method.Attributes.HasFlag(MethodAttributes.Virtual) |
                    method.Attributes.HasFlag(MethodAttributes.Final))
                    method.Attributes.HasFlag(MethodAttributes.Final)
                    // overriding generic virtual methods is not supported
                    // so a call to that should be deferred to the base class method.
                    || method.IsGenericMethod)
                {
                    continue;
                }
diff --git a/src/testing/generictest.cs b/src/testing/generictest.cs
            return items;
        }
    }

    public abstract class GenericVirtualMethodTest
    {
        public virtual Q VirtMethod<Q>(Q arg1)
        {
            return arg1;
        }
    }
 }
diff --git a/tests/test_subclass.py b/tests/test_subclass.py
 import System
 import pytest
 from Python.Test import (IInterfaceTest, SubClassTest, EventArgsTest,
                         FunctionsTest, IGenericInterface)
                         FunctionsTest, IGenericInterface, GenericVirtualMethodTest)
 from System.Collections.Generic import List


    obj = GenericInterfaceImpl()
    SpecificInterfaceUser(obj, Int32(0))
    GenericInterfaceUser[Int32](obj, Int32(0))

 def test_virtual_generic_method():
    class OverloadingSubclass(GenericVirtualMethodTest):
        __namespace__ = "test_virtual_generic_method_cls"
    class OverloadingSubclass2(OverloadingSubclass):
        __namespace__ = "test_virtual_generic_method_cls"
    obj = OverloadingSubclass()
    assert obj.VirtMethod[int](5) == 5
    obj = OverloadingSubclass2()
    assert obj.VirtMethod[int](5) == 5
Original file line number	Diff line number	Diff line change
Expand Up		@@ -13,6 +13,8 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].

		### Fixed

		- Fixed error occuring when inheriting a class containing a virtual generic method.

		## [3.0.1](https://github.com/pythonnet/pythonnet/releases/tag/v3.0.1) - 2022-11-03

		### Added
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -220,7 +220,10 @@ internal static Type CreateDerivedType(string name,
		foreach (MethodInfo method in methods)
		{
		if (!method.Attributes.HasFlag(MethodAttributes.Virtual) \|
		method.Attributes.HasFlag(MethodAttributes.Final))
		method.Attributes.HasFlag(MethodAttributes.Final)
		// overriding generic virtual methods is not supported
		// so a call to that should be deferred to the base class method.
		\|\| method.IsGenericMethod)
		{
		continue;
		}
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -136,4 +136,12 @@ public static T[] EchoRange<T>(T[] items)
		return items;
		}
		}

		public abstract class GenericVirtualMethodTest
		{
		public virtual Q VirtMethod<Q>(Q arg1)
		{
		return arg1;
		}
		}
		}
Original file line number	Diff line number	Diff line change
Expand Up		@@ -9,7 +9,7 @@
		import System
		import pytest
		from Python.Test import (IInterfaceTest, SubClassTest, EventArgsTest,
		FunctionsTest, IGenericInterface)
		FunctionsTest, IGenericInterface, GenericVirtualMethodTest)
		from System.Collections.Generic import List


Expand DownExpand Up		@@ -327,3 +327,15 @@ def test_generic_interface():
		obj = GenericInterfaceImpl()
		SpecificInterfaceUser(obj, Int32(0))
		GenericInterfaceUser[Int32](obj, Int32(0))

		def test_virtual_generic_method():
		class OverloadingSubclass(GenericVirtualMethodTest):
		__namespace__ = "test_virtual_generic_method_cls"
		class OverloadingSubclass2(OverloadingSubclass):
		__namespace__ = "test_virtual_generic_method_cls"
		obj = OverloadingSubclass()
		assert obj.VirtMethod[int](5) == 5
		obj = OverloadingSubclass2()
		assert obj.VirtMethod[int](5) == 5