Potential error in error (warning) message

[homebru]

I am too new at rust to know if this is really an issue or not.

I was trying to get the sample "guess" program to work. At one point I got this warning:

warning: pattern binding Less is named the same as one of the variants of the type core::cmp::Ordering [E0170]

So I change my namespace to use 'core' and I got this error:

error: failed to resolve. Use of undeclared type or module core::cmp::Ordering

In the end, the solution was to use "std::cmp::Ordering::Less" - so the bug(?) is the warning message steering me to the wrong namespace.

This is a general problem with paths in error messages and somewhat related to #13065.

What we should be doing is for each resolved definition of an item, find the publicly accessible path to that item. Such a path will always exist due to the restriction on exposing private types. This may or may not be a non-trivial change to resolve, though.