67 lines
2.7 KiB
Plaintext
67 lines
2.7 KiB
Plaintext
error: generator cannot be sent between threads safely
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--> $DIR/issue-68112.rs:40:18
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LL | require_send(send_gen);
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| ^^^^^^^^ generator is not `Send`
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= help: the trait `Sync` is not implemented for `RefCell<i32>`
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= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
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note: generator is not `Send` as this value is used across a yield
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--> $DIR/issue-68112.rs:36:9
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LL | let _non_send_gen = make_non_send_generator();
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| ------------- has type `impl Generator<Return = Arc<RefCell<i32>>>` which is not `Send`
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LL |
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LL | yield;
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| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
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...
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LL | };
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| - `_non_send_gen` is later dropped here
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note: required by a bound in `require_send`
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--> $DIR/issue-68112.rs:22:25
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LL | fn require_send(_: impl Send) {}
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| ^^^^ required by this bound in `require_send`
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error[E0277]: `RefCell<i32>` cannot be shared between threads safely
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--> $DIR/issue-68112.rs:64:18
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LL | require_send(send_gen);
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| ------------ ^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
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| |
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| required by a bound introduced by this call
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= help: the trait `Sync` is not implemented for `RefCell<i32>`
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= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
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= note: required for `Arc<RefCell<i32>>` to implement `Send`
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note: required because it's used within this generator
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--> $DIR/issue-68112.rs:49:5
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LL | || {
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| ^^
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note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
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--> $DIR/issue-68112.rs:46:30
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LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
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--> $DIR/issue-68112.rs:54:34
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LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: required because it captures the following types: `impl Generator<Return = Arc<RefCell<i32>>>`, `()`
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note: required because it's used within this generator
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--> $DIR/issue-68112.rs:60:20
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LL | let send_gen = || {
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| ^^
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note: required by a bound in `require_send`
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--> $DIR/issue-68112.rs:22:25
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LL | fn require_send(_: impl Send) {}
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| ^^^^ required by this bound in `require_send`
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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