error: unknown `doc` attribute `as_ptr`
  --> $DIR/doc-attr.rs:5:7
   |
LL | #[doc(as_ptr)]
   |       ^^^^^^
   |
   = note: `#[deny(invalid_doc_attributes)]` on by default

error: invalid `doc` attribute
  --> $DIR/doc-attr.rs:9:7
   |
LL | #[doc(123)]
   |       ^^^

error: invalid `doc` attribute
  --> $DIR/doc-attr.rs:11:7
   |
LL | #[doc("hello", "bar")]
   |       ^^^^^^^

error: invalid `doc` attribute
  --> $DIR/doc-attr.rs:11:16
   |
LL | #[doc("hello", "bar")]
   |                ^^^^^

error: unknown `doc` attribute `foo::bar`
  --> $DIR/doc-attr.rs:14:7
   |
LL | #[doc(foo::bar, crate::bar::baz = "bye")]
   |       ^^^^^^^^

error: unknown `doc` attribute `crate::bar::baz`
  --> $DIR/doc-attr.rs:14:17
   |
LL | #[doc(foo::bar, crate::bar::baz = "bye")]
   |                 ^^^^^^^^^^^^^^^^^^^^^^^

error: unknown `doc` attribute `as_ptr`
  --> $DIR/doc-attr.rs:2:8
   |
LL | #![doc(as_ptr)]
   |        ^^^^^^

error: aborting due to 7 previous errors