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Use clearer message when obligation is caused by await expr

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This commit is contained in:
Tyler Mandry 2020-04-01 18:53:00 -07:00
parent 6edfd66c5d
commit aed7c30e4f
5 changed files with 127 additions and 47 deletions
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9
src/test/ui/async-await/issue-68112.stderr
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@ -8,16 +8,13 @@ LL | require_send(send_fut);
| ^^^^^^^^^^^^ future created by async block is not `Send`
|
= help: the trait `std::marker::Sync` is not implemented for `std::cell::RefCell<i32>`
note: future is not `Send` as this value is used across an await
--> $DIR/issue-68112.rs:32:9
note: future is not `Send` as this value is used in an await
--> $DIR/issue-68112.rs:31:17
|
LL | let non_send_fut = make_non_send_future1();
| ------------ created here
LL | let _ = non_send_fut.await;
LL | ready(0).await;
| ^^^^^^^^ await occurs here, with `non_send_fut` maybe used later
LL | };
| - `non_send_fut` is later dropped here
| ^^^^^^^^^^^^ await occurs here
error[E0277]: `std::cell::RefCell<i32>` cannot be shared between threads safely
--> $DIR/issue-68112.rs:49:5