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|
error: coroutine cannot be sent between threads safely
--> $DIR/coroutine-print-verbose-1.rs:37:5
|
LL | require_send(send_gen);
| ^^^^^^^^^^^^^^^^^^^^^^ coroutine is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{test1::{closure#0} upvar_tys=() witness={test1::{closure#0}}}: Send`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: coroutine is not `Send` as this value is used across a yield
--> $DIR/coroutine-print-verbose-1.rs:35:9
|
LL | let _non_send_gen = make_non_send_coroutine();
| ------------- has type `Opaque(DefId(0:34 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine::{opaque#0}), [])` which is not `Send`
LL | yield;
| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
note: required by a bound in `require_send`
--> $DIR/coroutine-print-verbose-1.rs:26:25
|
LL | fn require_send(_: impl Send) {}
| ^^^^ required by this bound in `require_send`
error[E0277]: `RefCell<i32>` cannot be shared between threads safely
--> $DIR/coroutine-print-verbose-1.rs:56:5
|
LL | require_send(send_gen);
| ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{test2::{closure#0} upvar_tys=() witness={test2::{closure#0}}}: Send`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Arc<RefCell<i32>>` to implement `Send`
note: required because it's used within this coroutine
--> $DIR/coroutine-print-verbose-1.rs:42:5
|
LL | || {
| ^^
note: required because it appears within the type `Opaque(DefId(0:35 ~ coroutine_print_verbose_1[75fb]::make_gen2::{opaque#0}), [Arc<RefCell<i32>>])`
--> $DIR/coroutine-print-verbose-1.rs:41:30
|
LL | pub fn make_gen2<T>(t: T) -> impl Coroutine<Return = T> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
note: required because it appears within the type `Opaque(DefId(0:36 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine2::{opaque#0}), [])`
--> $DIR/coroutine-print-verbose-1.rs:47:34
|
LL | fn make_non_send_coroutine2() -> impl Coroutine<Return = Arc<RefCell<i32>>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: required because it captures the following types: `Opaque(DefId(0:36 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine2::{opaque#0}), [])`
note: required because it's used within this coroutine
--> $DIR/coroutine-print-verbose-1.rs:52:20
|
LL | let send_gen = || {
| ^^
note: required by a bound in `require_send`
--> $DIR/coroutine-print-verbose-1.rs:26:25
|
LL | fn require_send(_: impl Send) {}
| ^^^^ required by this bound in `require_send`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
|
