Alternatives to BinaryCompatOnlyAttribute

[ds5678]

Context

Since the main motivation for BinaryCompatOnlyAttribute is to resolve overload resolution problems, I propose this be resolved by changing ObsoleteAttribute instead.

Idea 1: Make Obsolescence Affect Overload Resolution

We define an "obsolete context" where a containing type or member is obsolete. In this context, overload resolution is treated the same as it is today.

Outside of an obsolete context, obsolete members are treated as a last resort for resolution, perhaps even after extension members with the same signature.

Idea 2: Add a Boolean Property to ObsoleteAttribute

partial class ObsoleteAttribute
{
    bool BinaryCompatOnly { get; set; }
}

[333fred]

These have already been suggested on the original issue, we don't need a separate discussion to fracture the conversation and make it harder to follow.

[ds5678]

Sorry, I searched for other discussions and didn't find any.

[ds5678]

I found the issue: #7706.