rust/tests/ui/coroutine/print/coroutine-print-verbose-2.stderr
Oli Scherer aef0f4024a Error on using yield without also using #[coroutine] on the closure
And suggest adding the `#[coroutine]` to the closure
2024-04-24 08:05:29 +00:00

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error: coroutine cannot be shared between threads safely
--> $DIR/coroutine-print-verbose-2.rs:17:5
|
LL | / assert_sync(#[coroutine] || {
LL | |
LL | | let a = NotSync;
LL | | yield;
LL | | drop(a);
LL | | });
| |______^ coroutine is not `Sync`
|
= help: within `{main::{closure#0} upvar_tys=() witness={main::{closure#0}}}`, the trait `Sync` is not implemented for `NotSync`, which is required by `{main::{closure#0} upvar_tys=() witness={main::{closure#0}}}: Sync`
note: coroutine is not `Sync` as this value is used across a yield
--> $DIR/coroutine-print-verbose-2.rs:20:9
|
LL | let a = NotSync;
| - has type `NotSync` which is not `Sync`
LL | yield;
| ^^^^^ yield occurs here, with `a` maybe used later
note: required by a bound in `assert_sync`
--> $DIR/coroutine-print-verbose-2.rs:14:23
|
LL | fn assert_sync<T: Sync>(_: T) {}
| ^^^^ required by this bound in `assert_sync`
error: coroutine cannot be sent between threads safely
--> $DIR/coroutine-print-verbose-2.rs:24:5
|
LL | / assert_send(#[coroutine] || {
LL | |
LL | | let a = NotSend;
LL | | yield;
LL | | drop(a);
LL | | });
| |______^ coroutine is not `Send`
|
= help: within `{main::{closure#1} upvar_tys=() witness={main::{closure#1}}}`, the trait `Send` is not implemented for `NotSend`, which is required by `{main::{closure#1} upvar_tys=() witness={main::{closure#1}}}: Send`
note: coroutine is not `Send` as this value is used across a yield
--> $DIR/coroutine-print-verbose-2.rs:27:9
|
LL | let a = NotSend;
| - has type `NotSend` which is not `Send`
LL | yield;
| ^^^^^ yield occurs here, with `a` maybe used later
note: required by a bound in `assert_send`
--> $DIR/coroutine-print-verbose-2.rs:15:23
|
LL | fn assert_send<T: Send>(_: T) {}
| ^^^^ required by this bound in `assert_send`
error: aborting due to 2 previous errors