error[E0433]: failed to resolve. Use of undeclared type or module `bar`
  --> $DIR/export2.rs:12:18
   |
LL |     pub fn x() { bar::x(); } //~ ERROR failed to resolve. Use of undeclared type or module `bar`
   |                  ^^^ Use of undeclared type or module `bar`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.