diff options
Diffstat (limited to 'src/test/ui/lint/unused')
12 files changed, 44 insertions, 18 deletions
diff --git a/src/test/ui/lint/unused/issue-47390-unused-variable-in-struct-pattern.stderr b/src/test/ui/lint/unused/issue-47390-unused-variable-in-struct-pattern.stderr index 26fa6eb9b..fe2e3afc8 100644 --- a/src/test/ui/lint/unused/issue-47390-unused-variable-in-struct-pattern.stderr +++ b/src/test/ui/lint/unused/issue-47390-unused-variable-in-struct-pattern.stderr @@ -49,8 +49,8 @@ warning: value assigned to `hours_are_suns` is never read LL | hours_are_suns = false; | ^^^^^^^^^^^^^^ | - = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]` = help: maybe it is overwritten before being read? + = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]` warning: unused variable: `fire` --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:52:32 diff --git a/src/test/ui/lint/unused/must-use-box-from-raw.stderr b/src/test/ui/lint/unused/must-use-box-from-raw.stderr index 7769f09aa..011acc3bf 100644 --- a/src/test/ui/lint/unused/must-use-box-from-raw.stderr +++ b/src/test/ui/lint/unused/must-use-box-from-raw.stderr @@ -4,12 +4,12 @@ warning: unused return value of `Box::<T>::from_raw` that must be used LL | Box::from_raw(ptr); | ^^^^^^^^^^^^^^^^^^^ | + = note: call `drop(from_raw(ptr))` if you intend to drop the `Box` note: the lint level is defined here --> $DIR/must-use-box-from-raw.rs:5:9 | LL | #![warn(unused_must_use)] | ^^^^^^^^^^^^^^^ - = note: call `drop(from_raw(ptr))` if you intend to drop the `Box` warning: 1 warning emitted diff --git a/src/test/ui/lint/unused/must_use-in-stdlib-traits.stderr b/src/test/ui/lint/unused/must_use-in-stdlib-traits.stderr index 76978d29d..f5199f43c 100644 --- a/src/test/ui/lint/unused/must_use-in-stdlib-traits.stderr +++ b/src/test/ui/lint/unused/must_use-in-stdlib-traits.stderr @@ -4,12 +4,12 @@ error: unused implementer of `Iterator` that must be used LL | iterator(); | ^^^^^^^^^^^ | + = note: iterators are lazy and do nothing unless consumed note: the lint level is defined here --> $DIR/must_use-in-stdlib-traits.rs:1:9 | LL | #![deny(unused_must_use)] | ^^^^^^^^^^^^^^^ - = note: iterators are lazy and do nothing unless consumed error: unused implementer of `Future` that must be used --> $DIR/must_use-in-stdlib-traits.rs:43:4 diff --git a/src/test/ui/lint/unused/must_use-tuple.stderr b/src/test/ui/lint/unused/must_use-tuple.stderr index e5709a5f0..63e0318fb 100644 --- a/src/test/ui/lint/unused/must_use-tuple.stderr +++ b/src/test/ui/lint/unused/must_use-tuple.stderr @@ -4,12 +4,12 @@ error: unused `Result` in tuple element 0 that must be used LL | (Ok::<(), ()>(()),); | ^^^^^^^^^^^^^^^^ | + = note: this `Result` may be an `Err` variant, which should be handled note: the lint level is defined here --> $DIR/must_use-tuple.rs:1:9 | LL | #![deny(unused_must_use)] | ^^^^^^^^^^^^^^^ - = note: this `Result` may be an `Err` variant, which should be handled error: unused `Result` in tuple element 0 that must be used --> $DIR/must_use-tuple.rs:10:6 diff --git a/src/test/ui/lint/unused/unused-attr-duplicate.stderr b/src/test/ui/lint/unused/unused-attr-duplicate.stderr index f592323b5..769b17487 100644 --- a/src/test/ui/lint/unused/unused-attr-duplicate.stderr +++ b/src/test/ui/lint/unused/unused-attr-duplicate.stderr @@ -4,16 +4,16 @@ error: unused attribute LL | #[no_link] | ^^^^^^^^^^ help: remove this attribute | -note: the lint level is defined here - --> $DIR/unused-attr-duplicate.rs:12:9 - | -LL | #![deny(unused_attributes)] - | ^^^^^^^^^^^^^^^^^ note: attribute also specified here --> $DIR/unused-attr-duplicate.rs:32:1 | LL | #[no_link] | ^^^^^^^^^^ +note: the lint level is defined here + --> $DIR/unused-attr-duplicate.rs:12:9 + | +LL | #![deny(unused_attributes)] + | ^^^^^^^^^^^^^^^^^ error: unused attribute --> $DIR/unused-attr-duplicate.rs:37:1 diff --git a/src/test/ui/lint/unused/unused-closure.stderr b/src/test/ui/lint/unused/unused-closure.stderr index 265d3e8e0..4362abd20 100644 --- a/src/test/ui/lint/unused/unused-closure.stderr +++ b/src/test/ui/lint/unused/unused-closure.stderr @@ -6,12 +6,12 @@ LL | | println!("Hello!"); LL | | }; | |______^ | + = note: closures are lazy and do nothing unless called note: the lint level is defined here --> $DIR/unused-closure.rs:6:9 | LL | #![deny(unused_must_use)] | ^^^^^^^^^^^^^^^ - = note: closures are lazy and do nothing unless called error: unused implementer of `Future` that must be used --> $DIR/unused-closure.rs:13:5 diff --git a/src/test/ui/lint/unused/unused-doc-comments-edge-cases.stderr b/src/test/ui/lint/unused/unused-doc-comments-edge-cases.stderr index 1a022c309..078b780d8 100644 --- a/src/test/ui/lint/unused/unused-doc-comments-edge-cases.stderr +++ b/src/test/ui/lint/unused/unused-doc-comments-edge-cases.stderr @@ -23,12 +23,12 @@ LL | LL | _ => false, | ---------- rustdoc does not generate documentation for match arms | + = help: use `//` for a plain comment note: the lint level is defined here --> $DIR/unused-doc-comments-edge-cases.rs:1:9 | LL | #![deny(unused_doc_comments)] | ^^^^^^^^^^^^^^^^^^^ - = help: use `//` for a plain comment error: unused doc comment --> $DIR/unused-doc-comments-edge-cases.rs:23:5 diff --git a/src/test/ui/lint/unused/unused-doc-comments-for-macros.stderr b/src/test/ui/lint/unused/unused-doc-comments-for-macros.stderr index f4f5bb71e..26b1c2b05 100644 --- a/src/test/ui/lint/unused/unused-doc-comments-for-macros.stderr +++ b/src/test/ui/lint/unused/unused-doc-comments-for-macros.stderr @@ -8,12 +8,12 @@ LL | | /// line3 | | | rustdoc does not generate documentation for macro invocations | + = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion note: the lint level is defined here --> $DIR/unused-doc-comments-for-macros.rs:1:9 | LL | #![deny(unused_doc_comments)] | ^^^^^^^^^^^^^^^^^^^ - = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion error: unused doc comment --> $DIR/unused-doc-comments-for-macros.rs:13:5 diff --git a/src/test/ui/lint/unused/unused-supertrait.rs b/src/test/ui/lint/unused/unused-supertrait.rs new file mode 100644 index 000000000..64a8e5204 --- /dev/null +++ b/src/test/ui/lint/unused/unused-supertrait.rs @@ -0,0 +1,11 @@ +#![deny(unused_must_use)] + +fn it() -> impl ExactSizeIterator<Item = ()> { + let x: Box<dyn ExactSizeIterator<Item = ()>> = todo!(); + x +} + +fn main() { + it(); + //~^ ERROR unused implementer of `Iterator` that must be used +} diff --git a/src/test/ui/lint/unused/unused-supertrait.stderr b/src/test/ui/lint/unused/unused-supertrait.stderr new file mode 100644 index 000000000..d2f8c0078 --- /dev/null +++ b/src/test/ui/lint/unused/unused-supertrait.stderr @@ -0,0 +1,15 @@ +error: unused implementer of `Iterator` that must be used + --> $DIR/unused-supertrait.rs:9:5 + | +LL | it(); + | ^^^^^ + | + = note: iterators are lazy and do nothing unless consumed +note: the lint level is defined here + --> $DIR/unused-supertrait.rs:1:9 + | +LL | #![deny(unused_must_use)] + | ^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/src/test/ui/lint/unused/unused_attributes-must_use.stderr b/src/test/ui/lint/unused/unused_attributes-must_use.stderr index dd112c23e..ce959ddbc 100644 --- a/src/test/ui/lint/unused/unused_attributes-must_use.stderr +++ b/src/test/ui/lint/unused/unused_attributes-must_use.stderr @@ -4,16 +4,16 @@ error: unused attribute `must_use` LL | #[must_use] | ^^^^^^^^^^^ | -note: the lint level is defined here - --> $DIR/unused_attributes-must_use.rs:2:9 - | -LL | #![deny(unused_attributes, unused_must_use)] - | ^^^^^^^^^^^^^^^^^ note: the built-in attribute `must_use` will be ignored, since it's applied to the macro invocation `global_asm` --> $DIR/unused_attributes-must_use.rs:59:1 | LL | global_asm!(""); | ^^^^^^^^^^ +note: the lint level is defined here + --> $DIR/unused_attributes-must_use.rs:2:9 + | +LL | #![deny(unused_attributes, unused_must_use)] + | ^^^^^^^^^^^^^^^^^ error: `#[must_use]` has no effect when applied to an extern crate --> $DIR/unused_attributes-must_use.rs:5:1 diff --git a/src/test/ui/lint/unused/useless-comment.stderr b/src/test/ui/lint/unused/useless-comment.stderr index 0054426fb..8bb5bdaeb 100644 --- a/src/test/ui/lint/unused/useless-comment.stderr +++ b/src/test/ui/lint/unused/useless-comment.stderr @@ -4,12 +4,12 @@ error: unused doc comment LL | /// foo | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations | + = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion note: the lint level is defined here --> $DIR/useless-comment.rs:3:9 | LL | #![deny(unused_doc_comments)] | ^^^^^^^^^^^^^^^^^^^ - = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion error: unused doc comment --> $DIR/useless-comment.rs:32:5 |