Erroneous duplicate value warning

[disarray2077]

When compiling the code below, the compiler incorrectly reports duplicate values in the IndexerMethods enum, even though no duplicates are present.

using System;
using System.Collections;

namespace simple_test;

class Program
{
	struct Yes;
	struct No;

	struct IsIndexable<T, TKey>
	{
		public typealias Result = comptype(_isIndexable(typeof(T), typeof(TKey)));

		private enum IndexerMethods
		{
			Undefined = 0,
			Get = 1,
			Set = 2,
			GetSet = Get | Set
		}

		[Comptime]
		private static Type _isIndexable(Type type, Type keyType)
		{
			IndexerMethods m = .();
			return typeof(No);
		}
	}

	class ClassInstanceWrapper<T>
		where IsIndexable<T, int>.Result : No
	{
	}

	static void Main ()
	{
		let c1 = scope ClassInstanceWrapper<List<int>>();
		Console.WriteLine(c1);
	}
}

Tested with: 206023f

[bfiete]

Fixed at 03f5c41