Compiler should not permit fields with function types and struct functions to share the same name

[tgschultz]

pub const S = struct
{
    func: fn() usize,
    
    pub fn func(self: *S) usize
    {
        return 2;
    }
};

pub fn func() usize
{
    return 1;
}

test ""
{
    var s = S{ .func = func, };
    debug.assert(s.func() == 2); //ambiguous
}

[andrewrk]

I think this is an important proposal, but deliberation and decision will have to wait until 0.5.0.