[mappu]

Is this really the case? Can you link to anything or an example on go.dev/play/ ?

I can find a mention of "cmp.Equal" having that behavior, but that's just a third-party package panic.

[assbuttbuttass]

It's true, but you'd never really write code like this

https://go.dev/play/p/r9NkQb6bQTx

[erik_seaberg]

The problem also affects structs that happen to have a private map or cache or callback anywhere within.

https://go.dev/play/p/uP-vjpvuhku

[preseinger]

Obviously `interface{}` values are not comparable?

[erik_seaberg]

The comparison is explicitly allowed in the language spec, there’s no warning for doing it, and it often works depending on the types. It’s a data-dependent runtime error, which is usually hard to guarantee test coverage for.