6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
|
6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
|
help: this trait has no implementations, consider adding one
--> f100.rs:2:1
|
2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
|
3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
62 lines
2.7 KiB
Plaintext
62 lines
2.7 KiB
Plaintext
error: coroutine cannot be sent between threads safely
|
|
--> $DIR/issue-68112.rs:40:5
|
|
|
|
|
LL | require_send(send_gen);
|
|
| ^^^^^^^^^^^^^^^^^^^^^^ coroutine is not `Send`
|
|
|
|
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{coroutine@$DIR/issue-68112.rs:33:20: 33:22}: 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/issue-68112.rs:36:9
|
|
|
|
|
LL | let _non_send_gen = make_non_send_coroutine();
|
|
| ------------- has type `impl Coroutine<Return = Arc<RefCell<i32>>>` which is not `Send`
|
|
LL |
|
|
LL | yield;
|
|
| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
|
|
note: required by a bound in `require_send`
|
|
--> $DIR/issue-68112.rs:22:25
|
|
|
|
|
LL | fn require_send(_: impl Send) {}
|
|
| ^^^^ required by this bound in `require_send`
|
|
|
|
error[E0277]: `RefCell<i32>` cannot be shared between threads safely
|
|
--> $DIR/issue-68112.rs:64:5
|
|
|
|
|
LL | require_send(send_gen);
|
|
| ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
|
|
|
|
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{coroutine@$DIR/issue-68112.rs:60:20: 60:22}: 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/issue-68112.rs:49:5
|
|
|
|
|
LL | || {
|
|
| ^^
|
|
note: required because it appears within the type `impl Coroutine<Return = Arc<RefCell<i32>>>`
|
|
--> $DIR/issue-68112.rs:46:30
|
|
|
|
|
LL | pub fn make_gen2<T>(t: T) -> impl Coroutine<Return = T> {
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
note: required because it appears within the type `impl Coroutine<Return = Arc<RefCell<i32>>>`
|
|
--> $DIR/issue-68112.rs:54:34
|
|
|
|
|
LL | fn make_non_send_coroutine2() -> impl Coroutine<Return = Arc<RefCell<i32>>> {
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
= note: required because it captures the following types: `impl Coroutine<Return = Arc<RefCell<i32>>>`
|
|
note: required because it's used within this coroutine
|
|
--> $DIR/issue-68112.rs:60:20
|
|
|
|
|
LL | let send_gen = || {
|
|
| ^^
|
|
note: required by a bound in `require_send`
|
|
--> $DIR/issue-68112.rs:22:25
|
|
|
|
|
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`.
|