subst::{GenericArgKind, Subst, SubstsRef},
Region, Ty, TyCtxt, TypeFoldable,
};
-use rustc_span::{sym, BytePos, DesugaringKind, Pos, Span};
+use rustc_span::{sym, BytePos, DesugaringKind, MultiSpan, Pos, Span};
use rustc_target::spec::abi;
use std::ops::ControlFlow;
use std::{cmp, fmt, iter};
let count = values.len();
let kind = key.descr();
let mut returned_async_output_error = false;
- for sp in values {
- err.span_label(
- *sp,
- format!(
- "{}{}{} {}{}",
- if sp.is_desugaring(DesugaringKind::Async)
- && !returned_async_output_error
- {
- "checked the `Output` of this `async fn`, "
- } else if count == 1 {
- "the "
- } else {
- ""
- },
- if count > 1 { "one of the " } else { "" },
- target,
- kind,
- pluralize!(count),
- ),
- );
- if sp.is_desugaring(DesugaringKind::Async)
- && returned_async_output_error == false
- {
- err.note("while checking the return type of the `async fn`");
+ for &sp in values {
+ if sp.is_desugaring(DesugaringKind::Async) && !returned_async_output_error {
+ if &[sp] != err.span.primary_spans() {
+ let mut span: MultiSpan = sp.into();
+ span.push_span_label(
+ sp,
+ format!(
+ "checked the `Output` of this `async fn`, {}{} {}{}",
+ if count > 1 { "one of the " } else { "" },
+ target,
+ kind,
+ pluralize!(count),
+ ),
+ );
+ err.span_note(
+ span,
+ "while checking the return type of the `async fn`",
+ );
+ } else {
+ err.span_label(
+ sp,
+ format!(
+ "checked the `Output` of this `async fn`, {}{} {}{}",
+ if count > 1 { "one of the " } else { "" },
+ target,
+ kind,
+ pluralize!(count),
+ ),
+ );
+ err.note("while checking the return type of the `async fn`");
+ }
returned_async_output_error = true;
+ } else {
+ err.span_label(
+ sp,
+ format!(
+ "{}{} {}{}",
+ if count == 1 { "the " } else { "one of the " },
+ target,
+ kind,
+ pluralize!(count),
+ ),
+ );
}
}
}
error[E0308]: mismatched types
--> $DIR/dont-suggest-missing-await.rs:14:18
|
-LL | async fn make_u32() -> u32 {
- | --- checked the `Output` of this `async fn`, found opaque type
-...
LL | take_u32(x)
| ^ expected `u32`, found opaque type
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/dont-suggest-missing-await.rs:7:24
+ |
+LL | async fn make_u32() -> u32 {
+ | ^^^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `u32`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
error[E0308]: mismatched types
--> $DIR/generator-desc.rs:12:16
|
-LL | async fn one() {}
- | - checked the `Output` of this `async fn`, expected opaque type
-LL | async fn two() {}
- | - checked the `Output` of this `async fn`, found opaque type
-...
LL | fun(one(), two());
| ^^^^^ expected opaque type, found a different opaque type
|
- = note: while checking the return type of the `async fn`
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/generator-desc.rs:5:16
+ |
+LL | async fn one() {}
+ | ^ checked the `Output` of this `async fn`, expected opaque type
+note: while checking the return type of the `async fn`
+ --> $DIR/generator-desc.rs:6:16
+ |
+LL | async fn two() {}
+ | ^ checked the `Output` of this `async fn`, found opaque type
= note: expected opaque type `impl Future` (opaque type at <$DIR/generator-desc.rs:5:16>)
found opaque type `impl Future` (opaque type at <$DIR/generator-desc.rs:6:16>)
= help: consider `await`ing on both `Future`s
async fn tuple() -> Tuple {
//~^ NOTE checked the `Output` of this `async fn`, expected opaque type
+ //~| NOTE while checking the return type of the `async fn`
+ //~| NOTE in this expansion of desugaring of `async` block or function
Tuple(1i32)
}
Tuple(_) => {} //~ ERROR mismatched types
//~^ NOTE expected opaque type, found struct `Tuple`
//~| NOTE expected opaque type `impl Future`
- //~| NOTE while checking the return type of the `async fn`
}
}
| ^^^^^^
error[E0277]: the `?` operator can only be applied to values that implement `Try`
- --> $DIR/issue-61076.rs:65:5
+ --> $DIR/issue-61076.rs:67:5
|
LL | t?;
| ^^ the `?` operator cannot be applied to type `T`
| ^^^^^^
error[E0609]: no field `0` on type `impl Future`
- --> $DIR/issue-61076.rs:76:26
+ --> $DIR/issue-61076.rs:78:26
|
LL | let _: i32 = tuple().0;
| ^ field not available in `impl Future`, but it is available in its `Output`
| ^^^^^^
error[E0609]: no field `a` on type `impl Future`
- --> $DIR/issue-61076.rs:80:28
+ --> $DIR/issue-61076.rs:82:28
|
LL | let _: i32 = struct_().a;
| ^ field not available in `impl Future`, but it is available in its `Output`
| ^^^^^^
error[E0599]: no method named `method` found for opaque type `impl Future` in the current scope
- --> $DIR/issue-61076.rs:84:15
+ --> $DIR/issue-61076.rs:86:15
|
LL | struct_().method();
| ^^^^^^ method not found in `impl Future`
| ^^^^^^
error[E0308]: mismatched types
- --> $DIR/issue-61076.rs:92:9
+ --> $DIR/issue-61076.rs:94:9
|
-LL | async fn tuple() -> Tuple {
- | ----- checked the `Output` of this `async fn`, expected opaque type
-...
LL | Tuple(_) => {}
| ^^^^^^^^ expected opaque type, found struct `Tuple`
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/issue-61076.rs:58:21
+ |
+LL | async fn tuple() -> Tuple {
+ | ^^^^^ checked the `Output` of this `async fn`, expected opaque type
= note: expected opaque type `impl Future`
found struct `Tuple`
help: consider `await`ing on the `Future`
error[E0308]: mismatched types
--> $DIR/suggest-missing-await-closure.rs:16:18
|
-LL | async fn make_u32() -> u32 {
- | --- checked the `Output` of this `async fn`, found opaque type
-...
LL | take_u32(x)
| ^ expected `u32`, found opaque type
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/suggest-missing-await-closure.rs:8:24
+ |
+LL | async fn make_u32() -> u32 {
+ | ^^^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `u32`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
error[E0308]: mismatched types
--> $DIR/suggest-missing-await.rs:12:14
|
-LL | async fn make_u32() -> u32 {
- | --- checked the `Output` of this `async fn`, found opaque type
-...
LL | take_u32(x)
| ^ expected `u32`, found opaque type
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/suggest-missing-await.rs:5:24
+ |
+LL | async fn make_u32() -> u32 {
+ | ^^^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `u32`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
error[E0308]: mismatched types
--> $DIR/suggest-missing-await.rs:22:5
|
-LL | async fn dummy() {}
- | - checked the `Output` of this `async fn`, found opaque type
-...
LL | dummy()
| ^^^^^^^ expected `()`, found opaque type
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/suggest-missing-await.rs:18:18
+ |
+LL | async fn dummy() {}
+ | ^ checked the `Output` of this `async fn`, found opaque type
= note: expected unit type `()`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
| | ^^^^^^^^^^^^^^^^^^^ expected `()`, found opaque type
LL | | }
| |_____- `match` arms have incompatible types
- |
- ::: $DIR/auxiliary/issue-81839.rs:6:49
|
-LL | pub async fn answer_str(&self, _s: &str) -> Test {
- | ---- checked the `Output` of this `async fn`, found opaque type
+note: while checking the return type of the `async fn`
+ --> $DIR/auxiliary/issue-81839.rs:6:49
|
- = note: while checking the return type of the `async fn`
+LL | pub async fn answer_str(&self, _s: &str) -> Test {
+ | ^^^^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `()`
found opaque type `impl Future`
}
async fn async_dummy() {} //~ NOTE checked the `Output` of this `async fn`, found opaque type
+//~| NOTE while checking the return type of the `async fn`
+//~| NOTE in this expansion of desugaring of `async` block or function
async fn async_dummy2() {} //~ NOTE checked the `Output` of this `async fn`, found opaque type
//~| NOTE checked the `Output` of this `async fn`, found opaque type
+//~| NOTE while checking the return type of the `async fn`
+//~| NOTE in this expansion of desugaring of `async` block or function
+//~| NOTE while checking the return type of the `async fn`
+//~| NOTE in this expansion of desugaring of `async` block or function
async fn async_extra_semicolon_same() {
let _ = match true { //~ NOTE `match` arms have incompatible types
false => async_dummy(), //~ ERROR `match` arms have incompatible types
//~^ NOTE expected `()`, found opaque type
//~| NOTE expected type `()`
- //~| NOTE while checking the return type of the `async fn`
//~| HELP consider `await`ing on the `Future`
};
}
false => async_dummy2(), //~ ERROR `match` arms have incompatible types
//~^ NOTE expected `()`, found opaque type
//~| NOTE expected type `()`
- //~| NOTE while checking the return type of the `async fn`
//~| HELP consider `await`ing on the `Future`
};
}
//~^ NOTE expected opaque type, found a different opaque type
//~| NOTE expected type `impl Future`
//~| NOTE distinct uses of `impl Trait` result in different opaque types
- //~| NOTE while checking the return type of the `async fn`
};
}
error[E0308]: `match` arms have incompatible types
- --> $DIR/match-prev-arm-needing-semi.rs:26:18
+ --> $DIR/match-prev-arm-needing-semi.rs:32:18
|
-LL | async fn async_dummy() {}
- | - checked the `Output` of this `async fn`, found opaque type
-...
LL | let _ = match true {
| _____________-
LL | | true => {
LL | | };
| |_____- `match` arms have incompatible types
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/match-prev-arm-needing-semi.rs:16:24
+ |
+LL | async fn async_dummy() {}
+ | ^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `()`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
| --
error[E0308]: `match` arms have incompatible types
- --> $DIR/match-prev-arm-needing-semi.rs:40:18
+ --> $DIR/match-prev-arm-needing-semi.rs:45:18
|
-LL | async fn async_dummy2() {}
- | - checked the `Output` of this `async fn`, found opaque type
-...
LL | let _ = match true {
| _____________-
LL | | true => {
LL | | };
| |_____- `match` arms have incompatible types
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/match-prev-arm-needing-semi.rs:19:25
+ |
+LL | async fn async_dummy2() {}
+ | ^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `()`
found opaque type `impl Future`
help: consider `await`ing on the `Future`
|
error[E0308]: `match` arms have incompatible types
- --> $DIR/match-prev-arm-needing-semi.rs:52:18
+ --> $DIR/match-prev-arm-needing-semi.rs:56:18
|
-LL | async fn async_dummy2() {}
- | - checked the `Output` of this `async fn`, found opaque type
-...
LL | let _ = match true {
| _____________-
LL | | true => async_dummy(),
LL | | };
| |_____- `match` arms have incompatible types
|
- = note: while checking the return type of the `async fn`
+note: while checking the return type of the `async fn`
+ --> $DIR/match-prev-arm-needing-semi.rs:19:25
+ |
+LL | async fn async_dummy2() {}
+ | ^ checked the `Output` of this `async fn`, found opaque type
= note: expected type `impl Future` (opaque type at <$DIR/match-prev-arm-needing-semi.rs:16:24>)
- found opaque type `impl Future` (opaque type at <$DIR/match-prev-arm-needing-semi.rs:17:25>)
+ found opaque type `impl Future` (opaque type at <$DIR/match-prev-arm-needing-semi.rs:19:25>)
= note: distinct uses of `impl Trait` result in different opaque types
help: consider `await`ing on both `Future`s
|