Remove redundant coroutine captures note

This commit is contained in:
Michael Goulet 2024-03-19 11:37:28 -04:00
parent 200e3f7995
commit 3d56178880
10 changed files with 61 additions and 73 deletions

View File

@ -3199,15 +3199,17 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
}
};
// Don't print the tuple of capture types
'print: {
if !is_upvar_tys_infer_tuple {
let ty_str = tcx.short_ty_string(ty, &mut long_ty_file);
let msg = format!("required because it appears within the type `{ty_str}`");
match ty.kind() {
ty::Adt(def, _) => match tcx.opt_item_ident(def.did()) {
Some(ident) => err.span_note(ident.span, msg),
None => err.note(msg),
Some(ident) => {
err.span_note(ident.span, msg);
}
None => {
err.note(msg);
}
},
ty::Alias(ty::Opaque, ty::AliasTy { def_id, .. }) => {
// If the previous type is async fn, this is the future generated by the body of an async function.
@ -3226,23 +3228,10 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
_ => false,
})
{
break 'print;
// See comment above; skip printing twice.
} else {
err.span_note(tcx.def_span(def_id), msg);
}
err.span_note(tcx.def_span(def_id), msg)
}
ty::CoroutineWitness(def_id, args) => {
use std::fmt::Write;
// FIXME: this is kind of an unusual format for rustc, can we make it more clear?
// Maybe we should just remove this note altogether?
// FIXME: only print types which don't meet the trait requirement
let mut msg =
"required because it captures the following types: ".to_owned();
for bty in tcx.coroutine_hidden_types(*def_id) {
let ty = bty.instantiate(tcx, args);
write!(msg, "`{ty}`, ").unwrap();
}
err.note(msg.trim_end_matches(", ").to_string())
}
ty::Coroutine(def_id, _) => {
let sp = tcx.def_span(def_id);
@ -3254,16 +3243,25 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
with_forced_trimmed_paths!(format!(
"required because it's used within this {kind:#}",
)),
)
);
}
ty::Closure(def_id, _) => err.span_note(
ty::CoroutineWitness(..) => {
// Skip printing coroutine-witnesses, since we'll drill into
// the bad field in another derived obligation cause.
}
ty::Closure(def_id, _) | ty::CoroutineClosure(def_id, _) => {
err.span_note(
tcx.def_span(def_id),
"required because it's used within this closure",
),
ty::Str => err.note("`str` is considered to contain a `[u8]` slice for auto trait purposes"),
_ => err.note(msg),
};
);
}
ty::Str => {
err.note("`str` is considered to contain a `[u8]` slice for auto trait purposes");
}
_ => {
err.note(msg);
}
};
}
obligated_types.push(ty);

View File

@ -38,7 +38,6 @@ LL | async fn bar2<T>(_: T) -> ! {
LL | | panic!()
LL | | }
| |_^
= note: required because it captures the following types: `impl Future<Output = !>`
note: required because it's used within this `async` fn body
--> $DIR/async-await-let-else.rs:18:32
|

View File

@ -58,7 +58,6 @@ note: required because it appears within the type `impl Future<Output = Arc<RefC
|
LL | fn make_non_send_future2() -> impl Future<Output = Arc<RefCell<i32>>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: required because it captures the following types: `impl Future<Output = Arc<RefCell<i32>>>`, `Ready<i32>`
note: required because it's used within this `async` block
--> $DIR/issue-68112.rs:57:20
|

View File

@ -25,7 +25,6 @@ LL | async fn baz<T>(_c: impl FnMut() -> T) where T: Future<Output=()> {
| ___________________________________________________________________^
LL | | }
| |_^
= note: required because it captures the following types: `impl Future<Output = ()>`
note: required because it's used within this `async` block
--> $DIR/issue-70935-complex-spans.rs:18:5
|
@ -63,7 +62,6 @@ LL | async fn baz<T>(_c: impl FnMut() -> T) where T: Future<Output=()> {
| ___________________________________________________________________^
LL | | }
| |_^
= note: required because it captures the following types: `impl Future<Output = ()>`
note: required because it's used within this `async` block
--> $DIR/issue-70935-complex-spans.rs:18:5
|

View File

@ -12,7 +12,6 @@ LL | pub async fn run() {
| ------------------ within this `impl Future<Output = ()>`
|
= help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `MutexGuard<'_, ()>`, which is required by `impl Future<Output = ()>: Send`
= note: required because it captures the following types: `Arc<Mutex<()>>`, `MutexGuard<'_, ()>`, `impl Future<Output = ()>`
note: required because it's used within this `async` fn body
--> $DIR/auxiliary/issue_67893.rs:9:20
|

View File

@ -8,7 +8,6 @@ fn main() {
//~| NOTE cannot be sent
//~| NOTE bound introduced by
//~| NOTE appears within the type
//~| NOTE captures the following types
}
fn gimme_send<T: Send>(t: T) {

View File

@ -11,9 +11,8 @@ LL | async fn foo() {
|
= help: within `impl Future<Output = ()>`, the trait `Send` is not implemented for `NotSend`, which is required by `impl Future<Output = ()>: Send`
= note: required because it appears within the type `(NotSend,)`
= note: required because it captures the following types: `(NotSend,)`, `impl Future<Output = ()>`
note: required because it's used within this `async` fn body
--> $DIR/partial-drop-partial-reinit.rs:28:16
--> $DIR/partial-drop-partial-reinit.rs:27:16
|
LL | async fn foo() {
| ________________^
@ -25,7 +24,7 @@ LL | | bar().await;
LL | | }
| |_^
note: required by a bound in `gimme_send`
--> $DIR/partial-drop-partial-reinit.rs:14:18
--> $DIR/partial-drop-partial-reinit.rs:13:18
|
LL | fn gimme_send<T: Send>(t: T) {
| ^^^^ required by this bound in `gimme_send`

View File

@ -65,7 +65,6 @@ fn test2() {
//~^ ERROR `RefCell<i32>` cannot be shared between threads safely
//~| NOTE `RefCell<i32>` cannot be shared between threads safely
//~| NOTE required for
//~| NOTE captures the following types
//~| NOTE use `std::sync::RwLock` instead
}

View File

@ -44,7 +44,6 @@ note: required because it appears within the type `impl Coroutine<Return = Arc<R
|
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
|

View File

@ -43,7 +43,6 @@ note: required because it appears within the type `Opaque(DefId(0:36 ~ coroutine
|
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
|