C# 14 Extension Members - Property Extension Resolution Question

[LeQuackers]

Hi,

I ran into this the other day and I was wondering if this case was covered anywhere:

public static class CharExtensions
{
    extension(char @char)
    {
        public char ToUpperInvariant => char.ToUpperInvariant(@char);
    }
}

public class Test
{
    public static void Foo()
    {
        // error CS8917
        var upper = 'a'.ToUpperInvariant;
    }
}

Should this case resolve to the extension(char).ToUpperInvariant { get; } property?

Should this case cause a compilation error?

I'd understand if it was an instance method conflicting with an instance extension property, but in this case it seems unnecessary; it's a static method conflicting with an instance extension property on an instance. Even if there wasn't an extension property, you'd get a CS0176 error, so it'd expect the extension property to have resolution priority.

[333fred]

@jcouv

[jcouv]

Will need to confirm expectations with WG, but this feels like a bug. Filed dotnet/roslyn#79309
Thanks for reporting!