diff options
Diffstat (limited to 'tests/ui/lint/must_not_suspend')
30 files changed, 635 insertions, 0 deletions
diff --git a/tests/ui/lint/must_not_suspend/boxed.rs b/tests/ui/lint/must_not_suspend/boxed.rs new file mode 100644 index 000000000..1f823fc55 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/boxed.rs @@ -0,0 +1,25 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + i: i64 +} + + +fn bar() -> Box<Umm> { + Box::new(Umm { + i: 1 + }) +} + +async fn other() {} + +pub async fn uhoh() { + let _guard = bar(); //~ ERROR boxed `Umm` held across + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/boxed.stderr b/tests/ui/lint/must_not_suspend/boxed.stderr new file mode 100644 index 000000000..9efc7b069 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/boxed.stderr @@ -0,0 +1,26 @@ +error: boxed `Umm` held across a suspend point, but should not be + --> $DIR/boxed.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/boxed.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/boxed.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +note: the lint level is defined here + --> $DIR/boxed.rs:3:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/dedup.rs b/tests/ui/lint/must_not_suspend/dedup.rs new file mode 100644 index 000000000..81a08579b --- /dev/null +++ b/tests/ui/lint/must_not_suspend/dedup.rs @@ -0,0 +1,20 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend] +struct No {} + +async fn shushspend() {} + +async fn wheeee<T>(t: T) { + shushspend().await; + drop(t); +} + +async fn yes() { + wheeee(&No {}).await; //~ ERROR `No` held across +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/dedup.stderr b/tests/ui/lint/must_not_suspend/dedup.stderr new file mode 100644 index 000000000..f8978ba57 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/dedup.stderr @@ -0,0 +1,19 @@ +error: `No` held across a suspend point, but should not be + --> $DIR/dedup.rs:16:13 + | +LL | wheeee(&No {}).await; + | ^^^^^ ------ the value is held across this suspend point + | +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/dedup.rs:16:13 + | +LL | wheeee(&No {}).await; + | ^^^^^ +note: the lint level is defined here + --> $DIR/dedup.rs:3:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.rs b/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.rs new file mode 100644 index 000000000..1554408c1 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.rs @@ -0,0 +1,9 @@ +// edition:2018 + +#[must_not_suspend = "You gotta use Umm's, ya know?"] //~ ERROR the `#[must_not_suspend]` +struct Umm { + _i: i64 +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.stderr b/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.stderr new file mode 100644 index 000000000..ab20a8be8 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/feature-gate-must_not_suspend.stderr @@ -0,0 +1,12 @@ +error[E0658]: the `#[must_not_suspend]` attribute is an experimental feature + --> $DIR/feature-gate-must_not_suspend.rs:3:1 + | +LL | #[must_not_suspend = "You gotta use Umm's, ya know?"] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #83310 <https://github.com/rust-lang/rust/issues/83310> for more information + = help: add `#![feature(must_not_suspend)]` to the crate attributes to enable + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0658`. diff --git a/tests/ui/lint/must_not_suspend/gated.rs b/tests/ui/lint/must_not_suspend/gated.rs new file mode 100644 index 000000000..b73a76555 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/gated.rs @@ -0,0 +1,17 @@ +// check-pass + +// edition:2018 +#![deny(must_not_suspend)] +//~^ WARNING unknown lint: `must_not_suspend` +//~| WARNING unknown lint: `must_not_suspend` +//~| WARNING unknown lint: `must_not_suspend` + +async fn other() {} + +pub async fn uhoh(m: std::sync::Mutex<()>) { + let _guard = m.lock().unwrap(); + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/gated.stderr b/tests/ui/lint/must_not_suspend/gated.stderr new file mode 100644 index 000000000..64de1ebea --- /dev/null +++ b/tests/ui/lint/must_not_suspend/gated.stderr @@ -0,0 +1,33 @@ +warning: unknown lint: `must_not_suspend` + --> $DIR/gated.rs:4:1 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the `must_not_suspend` lint is unstable + = note: see issue #83310 <https://github.com/rust-lang/rust/issues/83310> for more information + = help: add `#![feature(must_not_suspend)]` to the crate attributes to enable + = note: `#[warn(unknown_lints)]` on by default + +warning: unknown lint: `must_not_suspend` + --> $DIR/gated.rs:4:1 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the `must_not_suspend` lint is unstable + = note: see issue #83310 <https://github.com/rust-lang/rust/issues/83310> for more information + = help: add `#![feature(must_not_suspend)]` to the crate attributes to enable + +warning: unknown lint: `must_not_suspend` + --> $DIR/gated.rs:4:1 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: the `must_not_suspend` lint is unstable + = note: see issue #83310 <https://github.com/rust-lang/rust/issues/83310> for more information + = help: add `#![feature(must_not_suspend)]` to the crate attributes to enable + +warning: 3 warnings emitted + diff --git a/tests/ui/lint/must_not_suspend/generic.rs b/tests/ui/lint/must_not_suspend/generic.rs new file mode 100644 index 000000000..b3effa020 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/generic.rs @@ -0,0 +1,20 @@ +// edition:2018 +// run-pass +// +// this test shows a case where the lint doesn't fire in generic code +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend] +struct No {} + +async fn shushspend() {} + +async fn wheeee<T>(t: T) { + shushspend().await; + drop(t); +} + +fn main() { + let _fut = wheeee(No {}); +} diff --git a/tests/ui/lint/must_not_suspend/handled.rs b/tests/ui/lint/must_not_suspend/handled.rs new file mode 100644 index 000000000..8714be644 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/handled.rs @@ -0,0 +1,28 @@ +// edition:2018 +// run-pass +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + _i: i64 +} + + +fn bar() -> Umm { + Umm { + _i: 1 + } +} + +async fn other() {} + +pub async fn uhoh() { + { + let _guard = bar(); + } + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/issue-89562.rs b/tests/ui/lint/must_not_suspend/issue-89562.rs new file mode 100644 index 000000000..acdb36fcd --- /dev/null +++ b/tests/ui/lint/must_not_suspend/issue-89562.rs @@ -0,0 +1,19 @@ +// edition:2018 +// run-pass + +use std::sync::Mutex; + +// Copied from the issue. Allow-by-default for now, so run-pass +pub async fn foo() { + let foo = Mutex::new(1); + let lock = foo.lock().unwrap(); + + // Prevent mutex lock being held across `.await` point. + drop(lock); + + bar().await; +} + +async fn bar() {} + +fn main() {} diff --git a/tests/ui/lint/must_not_suspend/mutex.rs b/tests/ui/lint/must_not_suspend/mutex.rs new file mode 100644 index 000000000..7bb895e7d --- /dev/null +++ b/tests/ui/lint/must_not_suspend/mutex.rs @@ -0,0 +1,13 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +async fn other() {} + +pub async fn uhoh(m: std::sync::Mutex<()>) { + let _guard = m.lock().unwrap(); //~ ERROR `MutexGuard` held across + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/mutex.stderr b/tests/ui/lint/must_not_suspend/mutex.stderr new file mode 100644 index 000000000..c251cb845 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/mutex.stderr @@ -0,0 +1,26 @@ +error: `MutexGuard` held across a suspend point, but should not be + --> $DIR/mutex.rs:8:9 + | +LL | let _guard = m.lock().unwrap(); + | ^^^^^^ +LL | other().await; + | ------ the value is held across this suspend point + | +note: holding a MutexGuard across suspend points can cause deadlocks, delays, and cause Futures to not implement `Send` + --> $DIR/mutex.rs:8:9 + | +LL | let _guard = m.lock().unwrap(); + | ^^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/mutex.rs:8:9 + | +LL | let _guard = m.lock().unwrap(); + | ^^^^^^ +note: the lint level is defined here + --> $DIR/mutex.rs:3:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/other_items.rs b/tests/ui/lint/must_not_suspend/other_items.rs new file mode 100644 index 000000000..5aa1abb14 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/other_items.rs @@ -0,0 +1,8 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend] //~ ERROR attribute should be +mod inner {} + +fn main() {} diff --git a/tests/ui/lint/must_not_suspend/other_items.stderr b/tests/ui/lint/must_not_suspend/other_items.stderr new file mode 100644 index 000000000..41c889692 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/other_items.stderr @@ -0,0 +1,10 @@ +error: `must_not_suspend` attribute should be applied to a struct, enum, or trait + --> $DIR/other_items.rs:5:1 + | +LL | #[must_not_suspend] + | ^^^^^^^^^^^^^^^^^^^ +LL | mod inner {} + | ------------ is not a struct, enum, or trait + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/ref-drop-tracking.rs b/tests/ui/lint/must_not_suspend/ref-drop-tracking.rs new file mode 100644 index 000000000..1bc4a3812 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/ref-drop-tracking.rs @@ -0,0 +1,30 @@ +// edition:2018 +// compile-flags: -Zdrop-tracking +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + i: i64 +} + +struct Bar { + u: Umm, +} + +async fn other() {} + +impl Bar { + async fn uhoh(&mut self) { + let guard = &mut self.u; //~ ERROR `Umm` held across + + other().await; + + *guard = Umm { + i: 2 + } + } +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/ref-drop-tracking.stderr b/tests/ui/lint/must_not_suspend/ref-drop-tracking.stderr new file mode 100644 index 000000000..180e187c1 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/ref-drop-tracking.stderr @@ -0,0 +1,27 @@ +error: reference to `Umm` held across a suspend point, but should not be + --> $DIR/ref-drop-tracking.rs:19:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +LL | +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/ref-drop-tracking.rs:19:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/ref-drop-tracking.rs:19:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +note: the lint level is defined here + --> $DIR/ref-drop-tracking.rs:4:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/ref.drop_tracking.stderr b/tests/ui/lint/must_not_suspend/ref.drop_tracking.stderr new file mode 100644 index 000000000..abf76711b --- /dev/null +++ b/tests/ui/lint/must_not_suspend/ref.drop_tracking.stderr @@ -0,0 +1,27 @@ +error: reference to `Umm` held across a suspend point, but should not be + --> $DIR/ref.rs:21:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +LL | +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/ref.rs:21:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/ref.rs:21:13 + | +LL | let guard = &mut self.u; + | ^^^^^ +note: the lint level is defined here + --> $DIR/ref.rs:6:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/ref.no_drop_tracking.stderr b/tests/ui/lint/must_not_suspend/ref.no_drop_tracking.stderr new file mode 100644 index 000000000..41ac09ea7 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/ref.no_drop_tracking.stderr @@ -0,0 +1,27 @@ +error: `Umm` held across a suspend point, but should not be + --> $DIR/ref.rs:21:26 + | +LL | let guard = &mut self.u; + | ^^^^^^ +LL | +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/ref.rs:21:26 + | +LL | let guard = &mut self.u; + | ^^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/ref.rs:21:26 + | +LL | let guard = &mut self.u; + | ^^^^^^ +note: the lint level is defined here + --> $DIR/ref.rs:6:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/ref.rs b/tests/ui/lint/must_not_suspend/ref.rs new file mode 100644 index 000000000..f6b23746f --- /dev/null +++ b/tests/ui/lint/must_not_suspend/ref.rs @@ -0,0 +1,29 @@ +// edition:2018 +// revisions: no_drop_tracking drop_tracking +// [drop_tracking] compile-flags: -Zdrop-tracking=yes +// [no_drop_tracking] compile-flags: -Zdrop-tracking=no +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + i: i64, +} + +struct Bar { + u: Umm, +} + +async fn other() {} + +impl Bar { + async fn uhoh(&mut self) { + let guard = &mut self.u; //~ ERROR `Umm` held across + + other().await; + + *guard = Umm { i: 2 } + } +} + +fn main() {} diff --git a/tests/ui/lint/must_not_suspend/return.rs b/tests/ui/lint/must_not_suspend/return.rs new file mode 100644 index 000000000..5b1fa5e27 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/return.rs @@ -0,0 +1,9 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend] //~ ERROR attribute should be +fn foo() -> i32 { + 0 +} +fn main() {} diff --git a/tests/ui/lint/must_not_suspend/return.stderr b/tests/ui/lint/must_not_suspend/return.stderr new file mode 100644 index 000000000..fdada85eb --- /dev/null +++ b/tests/ui/lint/must_not_suspend/return.stderr @@ -0,0 +1,12 @@ +error: `must_not_suspend` attribute should be applied to a struct, enum, or trait + --> $DIR/return.rs:5:1 + | +LL | #[must_not_suspend] + | ^^^^^^^^^^^^^^^^^^^ +LL | / fn foo() -> i32 { +LL | | 0 +LL | | } + | |_- is not a struct, enum, or trait + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/trait.rs b/tests/ui/lint/must_not_suspend/trait.rs new file mode 100644 index 000000000..6c911cb4b --- /dev/null +++ b/tests/ui/lint/must_not_suspend/trait.rs @@ -0,0 +1,28 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend] +trait Wow {} + +impl Wow for i32 {} + +fn r#impl() -> impl Wow { + 1 +} + +fn r#dyn() -> Box<dyn Wow> { + Box::new(1) +} + +async fn other() {} + +pub async fn uhoh() { + let _guard1 = r#impl(); //~ ERROR implementer of `Wow` held across + let _guard2 = r#dyn(); //~ ERROR boxed `Wow` trait object held across + + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/trait.stderr b/tests/ui/lint/must_not_suspend/trait.stderr new file mode 100644 index 000000000..d64d25aae --- /dev/null +++ b/tests/ui/lint/must_not_suspend/trait.stderr @@ -0,0 +1,37 @@ +error: implementer of `Wow` held across a suspend point, but should not be + --> $DIR/trait.rs:21:9 + | +LL | let _guard1 = r#impl(); + | ^^^^^^^ +... +LL | other().await; + | ------ the value is held across this suspend point + | +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/trait.rs:21:9 + | +LL | let _guard1 = r#impl(); + | ^^^^^^^ +note: the lint level is defined here + --> $DIR/trait.rs:3:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: boxed `Wow` trait object held across a suspend point, but should not be + --> $DIR/trait.rs:22:9 + | +LL | let _guard2 = r#dyn(); + | ^^^^^^^ +LL | +LL | other().await; + | ------ the value is held across this suspend point + | +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/trait.rs:22:9 + | +LL | let _guard2 = r#dyn(); + | ^^^^^^^ + +error: aborting due to 2 previous errors + diff --git a/tests/ui/lint/must_not_suspend/tuple-mismatch.rs b/tests/ui/lint/must_not_suspend/tuple-mismatch.rs new file mode 100644 index 000000000..c7e14e425 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/tuple-mismatch.rs @@ -0,0 +1,9 @@ +#![feature(generators)] + +fn main() { + let _generator = || { + yield ((), ((), ())); + yield ((), ()); + //~^ ERROR mismatched types + }; +} diff --git a/tests/ui/lint/must_not_suspend/tuple-mismatch.stderr b/tests/ui/lint/must_not_suspend/tuple-mismatch.stderr new file mode 100644 index 000000000..cca8cd9bd --- /dev/null +++ b/tests/ui/lint/must_not_suspend/tuple-mismatch.stderr @@ -0,0 +1,12 @@ +error[E0308]: mismatched types + --> $DIR/tuple-mismatch.rs:6:20 + | +LL | yield ((), ()); + | ^^ expected tuple, found `()` + | + = note: expected tuple `((), ())` + found unit type `()` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/lint/must_not_suspend/unit.rs b/tests/ui/lint/must_not_suspend/unit.rs new file mode 100644 index 000000000..d3a19f704 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/unit.rs @@ -0,0 +1,25 @@ +// edition:2018 +#![feature(must_not_suspend)] +#![deny(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + i: i64 +} + + +fn bar() -> Umm { + Umm { + i: 1 + } +} + +async fn other() {} + +pub async fn uhoh() { + let _guard = bar(); //~ ERROR `Umm` held across + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/unit.stderr b/tests/ui/lint/must_not_suspend/unit.stderr new file mode 100644 index 000000000..c967dbac5 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/unit.stderr @@ -0,0 +1,26 @@ +error: `Umm` held across a suspend point, but should not be + --> $DIR/unit.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/unit.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/unit.rs:20:9 + | +LL | let _guard = bar(); + | ^^^^^^ +note: the lint level is defined here + --> $DIR/unit.rs:3:9 + | +LL | #![deny(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/tests/ui/lint/must_not_suspend/warn.rs b/tests/ui/lint/must_not_suspend/warn.rs new file mode 100644 index 000000000..7fdea66a2 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/warn.rs @@ -0,0 +1,26 @@ +// edition:2018 +// run-pass +#![feature(must_not_suspend)] +#![warn(must_not_suspend)] + +#[must_not_suspend = "You gotta use Umm's, ya know?"] +struct Umm { + _i: i64 +} + + +fn bar() -> Umm { + Umm { + _i: 1 + } +} + +async fn other() {} + +pub async fn uhoh() { + let _guard = bar(); //~ WARNING `Umm` held across + other().await; +} + +fn main() { +} diff --git a/tests/ui/lint/must_not_suspend/warn.stderr b/tests/ui/lint/must_not_suspend/warn.stderr new file mode 100644 index 000000000..fe551c652 --- /dev/null +++ b/tests/ui/lint/must_not_suspend/warn.stderr @@ -0,0 +1,26 @@ +warning: `Umm` held across a suspend point, but should not be + --> $DIR/warn.rs:21:9 + | +LL | let _guard = bar(); + | ^^^^^^ +LL | other().await; + | ------ the value is held across this suspend point + | +note: You gotta use Umm's, ya know? + --> $DIR/warn.rs:21:9 + | +LL | let _guard = bar(); + | ^^^^^^ +help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point + --> $DIR/warn.rs:21:9 + | +LL | let _guard = bar(); + | ^^^^^^ +note: the lint level is defined here + --> $DIR/warn.rs:4:9 + | +LL | #![warn(must_not_suspend)] + | ^^^^^^^^^^^^^^^^ + +warning: 1 warning emitted + |