using System;

namespace WrongRedundantCastWarning
{
	struct Flag
	{
		public Flag(int value) => this.Value = value;

		public int Value { get; }

		// This cast is wrongly reported as redundant
		public static FlagSet operator ~(Flag flag) => ~(FlagSet)flag;
	}

	struct FlagSet
	{
		public FlagSet(int value) => this.Value = value;

		public int Value { get; }

		public static implicit operator FlagSet(Flag flag) => new FlagSet(flag.Value);

		public static FlagSet operator ~(FlagSet flagSet) => new FlagSet(~flagSet.Value);
	}

	class Program
	{
		static readonly Flag One = new Flag(1);
		static readonly Flag Two = new Flag(2);

		static void Main(string[] args)
		{
			var flipped = ~Two;

			Console.WriteLine(flipped.Value);
		}
	}
}