blob: 282eac1b686efa9cb5adfb6289c5dbd76e7e4f7d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
error: generator cannot be sent between threads safely
--> $DIR/issue-68112.rs:43:18
|
LL | require_send(send_gen);
| ^^^^^^^^ generator is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: generator is not `Send` as this value is used across a yield
--> $DIR/issue-68112.rs:39:9
|
LL | let _non_send_gen = make_non_send_generator();
| ------------- has type `impl Generator<Return = Arc<RefCell<i32>>>` which is not `Send`
LL |
LL | yield;
| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
...
LL | };
| - `_non_send_gen` is later dropped here
note: required by a bound in `require_send`
--> $DIR/issue-68112.rs:25:25
|
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:67:18
|
LL | require_send(send_gen);
| ------------ ^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
| |
| required by a bound introduced by this call
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
= 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 generator
--> $DIR/issue-68112.rs:52:5
|
LL | || {
| ^^
note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
--> $DIR/issue-68112.rs:49:30
|
LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
--> $DIR/issue-68112.rs:57:34
|
LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: required because it captures the following types: `impl Generator<Return = Arc<RefCell<i32>>>`, `()`
note: required because it's used within this generator
--> $DIR/issue-68112.rs:63:20
|
LL | let send_gen = || {
| ^^
note: required by a bound in `require_send`
--> $DIR/issue-68112.rs:25:25
|
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`.
|
