rust/tests/ui/conditional-compilation/cfg-attr-empty-is-unused.stderr

error: `#[cfg_attr]` does not expand to any attributes
  --> $DIR/cfg-attr-empty-is-unused.rs:5:1
   |
LL | #[cfg_attr(FALSE,)]
   | ^^^^^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/cfg-attr-empty-is-unused.rs:3:9
   |
LL | #![deny(unused)]
   |         ^^^^^^
   = note: `#[deny(unused_attributes)]` implied by `#[deny(unused)]`

error: `#[cfg_attr]` does not expand to any attributes
  --> $DIR/cfg-attr-empty-is-unused.rs:8:1
   |
LL | #[cfg_attr(not(FALSE),)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors
Remove `Session.used_attrs` and move logic to `CheckAttrVisitor` Instead of updating global state to mark attributes as used, we now explicitly emit a warning when an attribute is used in an unsupported position. As a side effect, we are to emit more detailed warning messages (instead of just a generic "unused" message). `Session.check_name` is removed, since its only purpose was to mark the attribute as used. All of the callers are modified to use `Attribute.has_name` Additionally, `AttributeType::AssumedUsed` is removed - an 'assumed used' attribute is implemented by simply not performing any checks in `CheckAttrVisitor` for a particular attribute. We no longer emit unused attribute warnings for the `#[rustc_dummy]` attribute - it's an internal attribute used for tests, so it doesn't mark sense to treat it as 'unused'. With this commit, a large source of global untracked state is removed. 2021-07-29 17:00:41 +00:00			error: `#[cfg_attr]` does not expand to any attributes
Unify all the always-false cfgs under the `FALSE` cfg 2024-04-06 22:43:00 +00:00			`--> $DIR/cfg-attr-empty-is-unused.rs:5:1`
Add test for linting on 'cfg_attr(,)'. 2019-06-22 10:12:26 +00:00			`\|`
			`LL \| #[cfg_attr(FALSE,)]`
			`\| ^^^^^^^^^^^^^^^^^^^`
			`\|`
Normalise notes with the/is 2020-01-22 23:57:38 +00:00			`note: the lint level is defined here`
Unify all the always-false cfgs under the `FALSE` cfg 2024-04-06 22:43:00 +00:00			`--> $DIR/cfg-attr-empty-is-unused.rs:3:9`
Add test for linting on 'cfg_attr(,)'. 2019-06-22 10:12:26 +00:00			`\|`
			`LL \| #![deny(unused)]`
			`\| ^^^^^^`
normalize use of backticks in compiler messages for librustc/lint https://github.com/rust-lang/rust/issues/60532 2019-07-16 20:17:38 +00:00			= note: `#[deny(unused_attributes)]` implied by `#[deny(unused)]`
Add test for linting on 'cfg_attr(,)'. 2019-06-22 10:12:26 +00:00
Remove `Session.used_attrs` and move logic to `CheckAttrVisitor` Instead of updating global state to mark attributes as used, we now explicitly emit a warning when an attribute is used in an unsupported position. As a side effect, we are to emit more detailed warning messages (instead of just a generic "unused" message). `Session.check_name` is removed, since its only purpose was to mark the attribute as used. All of the callers are modified to use `Attribute.has_name` Additionally, `AttributeType::AssumedUsed` is removed - an 'assumed used' attribute is implemented by simply not performing any checks in `CheckAttrVisitor` for a particular attribute. We no longer emit unused attribute warnings for the `#[rustc_dummy]` attribute - it's an internal attribute used for tests, so it doesn't mark sense to treat it as 'unused'. With this commit, a large source of global untracked state is removed. 2021-07-29 17:00:41 +00:00			error: `#[cfg_attr]` does not expand to any attributes
Unify all the always-false cfgs under the `FALSE` cfg 2024-04-06 22:43:00 +00:00			`--> $DIR/cfg-attr-empty-is-unused.rs:8:1`
Add test for linting on 'cfg_attr(,)'. 2019-06-22 10:12:26 +00:00			`\|`
Unify all the always-false cfgs under the `FALSE` cfg 2024-04-06 22:43:00 +00:00			`LL \| #[cfg_attr(not(FALSE),)]`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^`
Add test for linting on 'cfg_attr(,)'. 2019-06-22 10:12:26 +00:00
			`error: aborting due to 2 previous errors`