e9d18f5f78
Point at assoc fn definition on type param divergence When the number of type parameters in the associated function of an impl and its trait differ, we now *always* point at the trait one, even if it comes from a foreign crate. When it is local, we point at the specific params, when it is foreign, we point at the whole associated item. Fix #69944.
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.