Bool Convert (IL Conv_I1) bug

BoolTest.cs

using System;
using System.Reflection.Emit;

namespace BoolConvertBug
{
	public class Program
	{
		public static void Main(string[] args)
		{
			Func<int, bool> func = CreateDynamicMethod();

			Console.WriteLine( "\n================ conv.i1 (1) ================" );
			IsTrueBool(func(1));
			IsTrue(func(1));
			Console.WriteLine( "\n================ conv.i1 (2) ================" );
			IsTrueBool(func(2));
			IsTrue(func(2));
			Console.WriteLine( "\n================ conv.i1 (0) ================" );
			IsFalseBool(func(0));
			IsFalse(func(0));
			Console.WriteLine( "\n================ conv.i1 (-1) ================" );
			IsFalseBool(func(-1));
			IsFalse(func(-1));
		}

		private static void IsFalseBool(bool actual)
		{
			Console.WriteLine( $"\n\n[bool] bool actual parameter = {actual}" );

			var value = System.Convert.ToBoolean(actual);
			Console.WriteLine( "[bool] var value = System.Convert.ToBoolean(actual)" );

			bool @false = false;
			Console.WriteLine( "[bool] var @false = false;" );

			bool test1 = false.Equals(false);
			Console.WriteLine($"[bool] false.Equals(false) = {test1}");

			bool test2 = false.Equals(@false);
			Console.WriteLine($"[bool] false.Equals(@false) = {test2}");

			bool isSuccess = false.Equals(value);
			Console.WriteLine($"[bool] false.Equals(value) = {isSuccess}");

			bool isSuccess2 = false.Equals(value && true);
			Console.WriteLine($"[bool] false.Equals(value && true) = {isSuccess2}");
		}

		private static void IsFalse<TActual>(TActual actual)
		{
			Console.WriteLine( $"\n\n[<TActual>] bool actual parameter = {actual}" );

			var value = System.Convert.ToBoolean(actual);
			Console.WriteLine( "[<TActual>] var value = System.Convert.ToBoolean(actual)" );

			bool @false = false;
			Console.WriteLine( "[<TActual>] var @false = false;" );

			bool test1 = false.Equals(false);
			Console.WriteLine($"[<TActual>] false.Equals(false) = {test1}");

			bool test2 = false.Equals(@false);
			Console.WriteLine($"[<TActual>] false.Equals(@false) = {test2}");

			bool isSuccess = false.Equals(value);
			Console.WriteLine($"[<TActual>] false.Equals(value) = {isSuccess}");

			bool isSuccess2 = false.Equals(value && true);
			Console.WriteLine($"[<TActual>] false.Equals(value && true) = {isSuccess2}");
		}

		private static void IsTrueBool(bool actual)
		{
			Console.WriteLine( $"\n\n[bool] bool actual parameter = {actual}" );

			var value = System.Convert.ToBoolean(actual);
			Console.WriteLine( "[bool] var value = System.Convert.ToBoolean(actual)" );

			bool @true = true;
			Console.WriteLine( "[bool] var @true = true;" );

			bool test1 = true.Equals(true);
			Console.WriteLine($"[bool] true.Equals(true) = {test1}");

			bool test2 = true.Equals(@true);
			Console.WriteLine($"[bool] true.Equals(@true) = {test2}");

			bool isSuccess = true.Equals(value);
			Console.WriteLine($"[bool] true.Equals(value) = {isSuccess}");
			
			bool isSuccess_ = true.Equals((object)value);
			Console.WriteLine($"[bool] true.Equals((object)value) = {isSuccess_}");

			bool isSuccess2 = true.Equals(value && true);
			Console.WriteLine($"[bool] true.Equals(value && true) = {isSuccess2}");

			bool isSuccess3 = true ==  value;
			Console.WriteLine($"[bool] true ==  value = {isSuccess3}");
			
			bool isSuccess3_ = (object)true ==  (object)value;
			Console.WriteLine($"[bool] (object)true ==  (object)value = {isSuccess3_}");

			bool isSuccess4 = true ==  value && true;
			Console.WriteLine($"[bool] true ==  value && true = {isSuccess4}");

			bool isSuccess5 = value == true;
			Console.WriteLine($"[bool] value == true = {isSuccess5}");

			bool isSuccess6 = value && true == true;
			Console.WriteLine($"[bool] value && true == true = {isSuccess6}");
		}

		private static void IsTrue<TActual>(TActual actual)
		{
			Console.WriteLine( $"\n\n[<TActual>] bool actual parameter = {actual}" );

			var value = System.Convert.ToBoolean(actual);
			Console.WriteLine( "[<TActual>] var value = System.Convert.ToBoolean(actual)" );

			bool @true = true;
			Console.WriteLine( "[<TActual>] var @true = true;" );

			bool test1 = true.Equals(true);
			Console.WriteLine($"[<TActual>] true.Equals(true)= {test1}");
			
			bool test1_ = true.Equals((object)value);
			Console.WriteLine($"[<TActual>] true.Equals((object)value) = {test1_}");

			bool test2 = true.Equals(@true);
			Console.WriteLine($"[<TActual>] true.Equals(@true) = {test2}");

			bool isSuccess = true.Equals(value);
			Console.WriteLine($"[<TActual>] true.Equals(value) = {isSuccess}");

			bool isSuccess2 = true.Equals(value && true);
			Console.WriteLine($"[<TActual>] true.Equals(value && true) = {isSuccess2}");
		}

		private static Func<int, bool> CreateDynamicMethod()
		{
			var methodArgs = new Type[] { typeof(int) };
			var convert = new DynamicMethod("TestMethod", typeof(bool), methodArgs, typeof(Program).Module);

			var il = convert.GetILGenerator();
			il.Emit(OpCodes.Ldarg_0);
			il.Emit(OpCodes.Conv_I1);
			il.Emit(OpCodes.Ret);						

			var @delegate = convert.CreateDelegate(typeof(Func<int, bool>));

			return @delegate as Func<int, bool>;
		}
	}
}