tests/rustdoc-ui/check-doc-alias-attr-location.stderr

warning: unused doc comment
  --> $DIR/check-doc-alias-attr-location.rs:9:1
   |
LL | #[doc(alias = "foo")]
   | ^^^^^^^^^^^^^^^^^^^^^
LL | extern "C" {}
   | ------------- rustdoc does not generate documentation for extern blocks
   |
   = help: use `//` for a plain comment
   = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default

error: `#[doc(alias = "...")]` isn't allowed on foreign module
  --> $DIR/check-doc-alias-attr-location.rs:9:15
   |
LL | #[doc(alias = "foo")]
   |               ^^^^^

error: `#[doc(alias = "...")]` isn't allowed on implementation block
  --> $DIR/check-doc-alias-attr-location.rs:12:15
   |
LL | #[doc(alias = "bar")]
   |               ^^^^^

error: `#[doc(alias = "...")]` isn't allowed on implementation block
  --> $DIR/check-doc-alias-attr-location.rs:18:15
   |
LL | #[doc(alias = "foobar")]
   |               ^^^^^^^^

error: `#[doc(alias = "...")]` isn't allowed on type alias in implementation block
  --> $DIR/check-doc-alias-attr-location.rs:20:19
   |
LL |     #[doc(alias = "assoc")]
   |                   ^^^^^^^

error: aborting due to 4 previous errors; 1 warning emitted