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On implicit Sized bound on fn argument, point at type instead of pattern

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Instead of

```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
  --> $DIR/issue-59324.rs:23:20
   |
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
   |                    ^^^^^^^ doesn't have a size known at compile-time
```

output

```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
  --> $DIR/issue-59324.rs:23:29
   |
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
   |                             ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
```
This commit is contained in:
Esteban Küber 2024-09-27 00:45:02 +00:00
parent 648d024a78
commit c7d171d771
31 changed files with 110 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
compiler/rustc_hir_typeck/src/check.rs
View File

@ -99,7 +99,7 @@ pub(super) fn check_fn<'a, 'tcx>(
if !params_can_be_unsized {
fcx.require_type_is_sized(
param_ty,
param.pat.span,
param.ty_span,
// ty.span == binding_span iff this is a closure parameter with no type ascription,
// or if it's an implicit `self` parameter
ObligationCauseCode::SizedArgumentType(

2
compiler/rustc_hir_typeck/src/gather_locals.rs
View File

@ -144,7 +144,7 @@ fn visit_pat(&mut self, p: &'tcx hir::Pat<'tcx>) {
if !self.fcx.tcx.features().unsized_fn_params {
self.fcx.require_type_is_sized(
var_ty,
p.span,
ty_span,
// ty_span == ident.span iff this is a closure parameter with no type
// ascription, or if it's an implicit `self` parameter
ObligationCauseCode::SizedArgumentType(

4
src/tools/clippy/tests/ui/crashes/ice-6251.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> tests/ui/crashes/ice-6251.rs:4:45
--> tests/ui/crashes/ice-6251.rs:4:48
|
LL | fn bug<T>() -> impl Iterator<Item = [(); { |x: [u8]| x }]> {
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: the trait `std::marker::Sized` is not implemented for `[u8]`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/associated-types/issue-59324.stderr
View File

@ -79,10 +79,10 @@ LL | pub trait Foo: NotFoo {
| ^^^^^^^^^^^^^^^^^^^^^
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:20
--> $DIR/issue-59324.rs:23:29
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn ThriftService<(), AssocType = _> + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/coherence/occurs-check/opaques.next.stderr
View File

@ -8,10 +8,10 @@ LL | impl<T> Trait<T> for defining_scope::Alias<T> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation
error[E0282]: type annotations needed
--> $DIR/opaques.rs:13:20
--> $DIR/opaques.rs:13:23
|
LL | pub fn cast<T>(x: Container<Alias<T>, T>) -> Container<T, T> {
| ^ cannot infer type
| ^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
error: aborting due to 2 previous errors

4
tests/ui/did_you_mean/replace-impl-infer-ty-from-trait.stderr
View File

@ -14,10 +14,10 @@ LL | fn bar(i: i32, t: usize, s: &()) -> (usize, i32) {
| ~~~ ~~~~~ ~~~ ~~~~~~~~~~~~
error[E0282]: type annotations needed
--> $DIR/replace-impl-infer-ty-from-trait.rs:9:12
--> $DIR/replace-impl-infer-ty-from-trait.rs:9:15
|
LL | fn bar(i: _, t: _, s: _) -> _ {
| ^ cannot infer type
| ^ cannot infer type
error: aborting due to 2 previous errors

4
tests/ui/error-codes/E0277.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/E0277.rs:11:6
--> $DIR/E0277.rs:11:9
|
LL | fn f(p: Path) { }
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: within `Path`, the trait `Sized` is not implemented for `[u8]`, which is required by `Path: Sized`
note: required because it appears within the type `Path`

12
tests/ui/feature-gates/feature-gate-unsized_fn_params.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
--> $DIR/feature-gate-unsized_fn_params.rs:17:8
--> $DIR/feature-gate-unsized_fn_params.rs:17:11
|
LL | fn foo(x: dyn Foo) {
| ^ doesn't have a size known at compile-time
| ^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
= help: unsized fn params are gated as an unstable feature
@ -16,10 +16,10 @@ LL | fn foo(x: &dyn Foo) {
| +
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
--> $DIR/feature-gate-unsized_fn_params.rs:21:8
--> $DIR/feature-gate-unsized_fn_params.rs:21:11
|
LL | fn bar(x: Foo) {
| ^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
= help: unsized fn params are gated as an unstable feature
@ -33,10 +33,10 @@ LL | fn bar(x: &dyn Foo) {
| ++++
error[E0277]: the size for values of type `[()]` cannot be known at compilation time
--> $DIR/feature-gate-unsized_fn_params.rs:25:8
--> $DIR/feature-gate-unsized_fn_params.rs:25:11
|
LL | fn qux(_: [()]) {}
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `[()]`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/feature-gates/feature-gate-unsized_locals.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn FnOnce() + 'static)` cannot be known at compilation time
--> $DIR/feature-gate-unsized_locals.rs:1:6
--> $DIR/feature-gate-unsized_locals.rs:1:9
|
LL | fn f(f: dyn FnOnce()) {}
| ^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn FnOnce() + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/inference/ice-ifer-var-leaked-out-of-rollback-122098.stderr
View File

@ -36,10 +36,10 @@ LL | struct Query<'q> {}
= help: consider removing `'q`, referring to it in a field, or using a marker such as `PhantomData`
error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/ice-ifer-var-leaked-out-of-rollback-122098.rs:7:17
--> $DIR/ice-ifer-var-leaked-out-of-rollback-122098.rs:7:21
|
LL | fn for_each(mut self, mut f: Box<dyn FnMut(Self::Item<'_>) + 'static>) {}
| ^^^^^^^^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: unsized fn params are gated as an unstable feature
help: consider further restricting `Self`

4
tests/ui/issues/issue-38954.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/issue-38954.rs:1:10
--> $DIR/issue-38954.rs:1:18
|
LL | fn _test(ref _p: str) {}
| ^^^^^^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `str`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/issues/issue-41229-ref-str.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/issue-41229-ref-str.rs:1:16
--> $DIR/issue-41229-ref-str.rs:1:23
|
LL | pub fn example(ref s: str) {}
| ^^^^^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `str`
= help: unsized fn params are gated as an unstable feature

8
tests/ui/issues/issue-42312.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `<Self as Deref>::Target` cannot be known at compilation time
--> $DIR/issue-42312.rs:4:12
--> $DIR/issue-42312.rs:4:15
|
LL | fn baz(_: Self::Target) where Self: Deref {}
| ^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `<Self as Deref>::Target`
= help: unsized fn params are gated as an unstable feature
@ -16,10 +16,10 @@ LL | fn baz(_: &Self::Target) where Self: Deref {}
| +
error[E0277]: the size for values of type `(dyn ToString + 'static)` cannot be known at compilation time
--> $DIR/issue-42312.rs:8:10
--> $DIR/issue-42312.rs:8:13
|
LL | pub fn f(_: dyn ToString) {}
| ^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn ToString + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/issues/issue-5883.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn A + 'static)` cannot be known at compilation time
--> $DIR/issue-5883.rs:8:5
--> $DIR/issue-5883.rs:8:8
|
LL | r: dyn A + 'static
| ^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn A + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/issues/issue-66706.stderr
View File

@ -29,10 +29,10 @@ LL | [0; match [|f @ &ref _| () ] {} ]
| while parsing this `match` expression
error[E0282]: type annotations needed
--> $DIR/issue-66706.rs:2:11
--> $DIR/issue-66706.rs:2:14
|
LL | [0; [|_: _ &_| ()].len()]
| ^ cannot infer type
| ^ cannot infer type
error[E0282]: type annotations needed
--> $DIR/issue-66706.rs:13:11

4
tests/ui/object-safety/avoid-ice-on-warning-2.new.stderr
View File

@ -19,10 +19,10 @@ LL | f()
| call expression requires function
error[E0277]: the size for values of type `(dyn Copy + 'static)` cannot be known at compilation time
--> $DIR/avoid-ice-on-warning-2.rs:4:10
--> $DIR/avoid-ice-on-warning-2.rs:4:13
|
LL | fn id<F>(f: Copy) -> usize {
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Copy + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/object-safety/avoid-ice-on-warning-2.old.stderr
View File

@ -47,10 +47,10 @@ LL | f()
| call expression requires function
error[E0277]: the size for values of type `(dyn Copy + 'static)` cannot be known at compilation time
--> $DIR/avoid-ice-on-warning-2.rs:4:10
--> $DIR/avoid-ice-on-warning-2.rs:4:13
|
LL | fn id<F>(f: Copy) -> usize {
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Copy + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/resolve/issue-3907-2.stderr
View File

@ -11,10 +11,10 @@ LL | fn bar();
| ^^^ the trait cannot be made into an object because associated function `bar` has no `self` parameter
error[E0277]: the size for values of type `(dyn issue_3907::Foo + 'static)` cannot be known at compilation time
--> $DIR/issue-3907-2.rs:11:8
--> $DIR/issue-3907-2.rs:11:12
|
LL | fn bar(_x: Foo) {}
| ^^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn issue_3907::Foo + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/resolve/issue-5035-2.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn I + 'static)` cannot be known at compilation time
--> $DIR/issue-5035-2.rs:4:8
--> $DIR/issue-5035-2.rs:4:12
|
LL | fn foo(_x: K) {}
| ^^ doesn't have a size known at compile-time
| ^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn I + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/suggestions/object-unsafe-trait-references-self.stderr
View File

@ -32,10 +32,10 @@ LL | trait Other: Sized {}
| this trait cannot be made into an object...
error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/object-unsafe-trait-references-self.rs:2:19
--> $DIR/object-unsafe-trait-references-self.rs:2:22
|
LL | fn baz(&self, _: Self) {}
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: unsized fn params are gated as an unstable feature
help: consider further restricting `Self`

4
tests/ui/suggestions/path-by-value.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/path-by-value.rs:3:6
--> $DIR/path-by-value.rs:3:9
|
LL | fn f(p: Path) { }
| ^ doesn't have a size known at compile-time
| ^^^^ doesn't have a size known at compile-time
|
= help: within `Path`, the trait `Sized` is not implemented for `[u8]`, which is required by `Path: Sized`
note: required because it appears within the type `Path`

12
tests/ui/suggestions/unsized-function-parameter.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/unsized-function-parameter.rs:5:9
--> $DIR/unsized-function-parameter.rs:5:14
|
LL | fn foo1(bar: str) {}
| ^^^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `str`
= help: unsized fn params are gated as an unstable feature
@ -12,10 +12,10 @@ LL | fn foo1(bar: &str) {}
| +
error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/unsized-function-parameter.rs:11:9
--> $DIR/unsized-function-parameter.rs:11:15
|
LL | fn foo2(_bar: str) {}
| ^^^^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `str`
= help: unsized fn params are gated as an unstable feature
@ -25,10 +25,10 @@ LL | fn foo2(_bar: &str) {}
| +
error[E0277]: the size for values of type `str` cannot be known at compilation time
--> $DIR/unsized-function-parameter.rs:17:9
--> $DIR/unsized-function-parameter.rs:17:12
|
LL | fn foo3(_: str) {}
| ^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `str`
= help: unsized fn params are gated as an unstable feature

18
tests/ui/trait-bounds/apit-unsized.stderr
View File

@ -1,10 +1,11 @@
error[E0277]: the size for values of type `impl Iterator<Item = i32> + ?Sized` cannot be known at compilation time
--> $DIR/apit-unsized.rs:1:8
--> $DIR/apit-unsized.rs:1:11
|
LL | fn foo(_: impl Iterator<Item = i32> + ?Sized) {}
| ^ ---------------------------------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider removing the `?Sized` bound to make the type parameter `Sized`
@ -18,12 +19,13 @@ LL | fn foo(_: &impl Iterator<Item = i32> + ?Sized) {}
| +
error[E0277]: the size for values of type `impl ?Sized` cannot be known at compilation time
--> $DIR/apit-unsized.rs:2:8
--> $DIR/apit-unsized.rs:2:11
|
LL | fn bar(_: impl ?Sized) {}
| ^ ----------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider replacing `?Sized` with `Sized`

52
tests/ui/trait-bounds/bad-suggestionf-for-repeated-unsized-bound-127441.stderr
View File

@ -35,10 +35,10 @@ LL | fn foo8(_: impl ?Sized + Debug + ?Sized ) {}
| ^^^^^^ ^^^^^^
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:9:20
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:9:23
|
LL | fn foo1<T: ?Sized>(a: T) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|
@ -54,10 +54,10 @@ LL | fn foo1<T: ?Sized>(a: &T) {}
| +
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:12:29
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:12:32
|
LL | fn foo2<T: ?Sized + ?Sized>(a: T) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|
@ -73,10 +73,10 @@ LL | fn foo2<T: ?Sized + ?Sized>(a: &T) {}
| +
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:16:37
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:16:40
|
LL | fn foo3<T: ?Sized + ?Sized + Debug>(a: T) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|
@ -92,10 +92,10 @@ LL | fn foo3<T: ?Sized + ?Sized + Debug>(a: &T) {}
| +
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:20:38
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:20:41
|
LL | fn foo4<T: ?Sized + Debug + ?Sized >(a: T) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|
@ -111,12 +111,13 @@ LL | fn foo4<T: ?Sized + Debug + ?Sized >(a: &T) {}
| +
error[E0277]: the size for values of type `impl ?Sized` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:24:9
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:24:12
|
LL | fn foo5(_: impl ?Sized) {}
| ^ ----------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider replacing `?Sized` with `Sized`
@ -130,12 +131,13 @@ LL | fn foo5(_: &impl ?Sized) {}
| +
error[E0277]: the size for values of type `impl ?Sized + ?Sized` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:27:9
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:27:12
|
LL | fn foo6(_: impl ?Sized + ?Sized) {}
| ^ -------------------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider restricting type parameters
@ -149,12 +151,13 @@ LL | fn foo6(_: &impl ?Sized + ?Sized) {}
| +
error[E0277]: the size for values of type `impl ?Sized + ?Sized + Debug` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:31:9
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:31:12
|
LL | fn foo7(_: impl ?Sized + ?Sized + Debug) {}
| ^ ---------------------------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider restricting type parameters
@ -168,12 +171,13 @@ LL | fn foo7(_: &impl ?Sized + ?Sized + Debug) {}
| +
error[E0277]: the size for values of type `impl ?Sized + Debug + ?Sized` cannot be known at compilation time
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:35:9
--> $DIR/bad-suggestionf-for-repeated-unsized-bound-127441.rs:35:12
|
LL | fn foo8(_: impl ?Sized + Debug + ?Sized ) {}
| ^ ---------------------------- this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| doesn't have a size known at compile-time
| this type parameter needs to be `Sized`
|
= help: unsized fn params are gated as an unstable feature
help: consider restricting type parameters

4
tests/ui/traits/alias/dont-elaborate-non-self.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn Fn() -> Fut + 'static)` cannot be known at compilation time
--> $DIR/dont-elaborate-non-self.rs:7:11
--> $DIR/dont-elaborate-non-self.rs:7:14
|
LL | fn f<Fut>(a: dyn F<Fut>) {}
| ^ doesn't have a size known at compile-time
| ^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Fn() -> Fut + 'static)`
= help: unsized fn params are gated as an unstable feature

8
tests/ui/traits/bound/not-on-bare-trait-2021.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time
--> $DIR/not-on-bare-trait-2021.rs:8:8
--> $DIR/not-on-bare-trait-2021.rs:8:12
|
LL | fn foo(_x: Foo + Send) {
| ^^ doesn't have a size known at compile-time
| ^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)`
= help: unsized fn params are gated as an unstable feature
@ -16,10 +16,10 @@ LL | fn foo(_x: &(dyn Foo + Send)) {
| +++++ +
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
--> $DIR/not-on-bare-trait-2021.rs:12:8
--> $DIR/not-on-bare-trait-2021.rs:12:11
|
LL | fn bar(x: Foo) -> Foo {
| ^ doesn't have a size known at compile-time
| ^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
= help: unsized fn params are gated as an unstable feature

8
tests/ui/traits/bound/not-on-bare-trait.stderr
View File

@ -13,10 +13,10 @@ LL | fn foo(_x: dyn Foo + Send) {
| +++
error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time
--> $DIR/not-on-bare-trait.rs:7:8
--> $DIR/not-on-bare-trait.rs:7:12
|
LL | fn foo(_x: Foo + Send) {
| ^^ doesn't have a size known at compile-time
| ^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)`
= help: unsized fn params are gated as an unstable feature
@ -30,10 +30,10 @@ LL | fn foo(_x: &(dyn Foo + Send)) {
| +++++ +
error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time
--> $DIR/not-on-bare-trait.rs:12:8
--> $DIR/not-on-bare-trait.rs:12:12
|
LL | fn bar(_x: (dyn Foo + Send)) {
| ^^ doesn't have a size known at compile-time
| ^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)`
= help: unsized fn params are gated as an unstable feature

4
tests/ui/type/type-check/unknown_type_for_closure.stderr
View File

@ -16,10 +16,10 @@ LL | let x = |_: /* Type */| {};
| ++++++++++++
error[E0282]: type annotations needed
--> $DIR/unknown_type_for_closure.rs:10:14
--> $DIR/unknown_type_for_closure.rs:10:17
|
LL | let x = |k: _| {};
| ^ cannot infer type
| ^ cannot infer type
error[E0282]: type annotations needed
--> $DIR/unknown_type_for_closure.rs:14:28

4
tests/ui/typeck/typeck_type_placeholder_item.stderr
View File

@ -358,10 +358,10 @@ LL ~ b: (T, T),
|
error[E0282]: type annotations needed
--> $DIR/typeck_type_placeholder_item.rs:128:18
--> $DIR/typeck_type_placeholder_item.rs:128:21
|
LL | fn fn_test11(_: _) -> (_, _) { panic!() }
| ^ cannot infer type
| ^ cannot infer type
error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
--> $DIR/typeck_type_placeholder_item.rs:128:28

4
tests/ui/unsized/unsized-fn-arg.stderr
View File

@ -1,8 +1,8 @@
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/unsized-fn-arg.rs:5:17
--> $DIR/unsized-fn-arg.rs:5:20
|
LL | fn f<T: ?Sized>(t: T) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|

8
tests/ui/unsized/unsized6.stderr
View File

@ -206,10 +206,10 @@ LL + fn f4<X: T>(x1: Box<X>, x2: Box<X>, x3: Box<X>) {
|
error[E0277]: the size for values of type `X` cannot be known at compilation time
--> $DIR/unsized6.rs:38:18
--> $DIR/unsized6.rs:38:21
|
LL | fn g1<X: ?Sized>(x: X) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|
@ -225,10 +225,10 @@ LL | fn g1<X: ?Sized>(x: &X) {}
| +
error[E0277]: the size for values of type `X` cannot be known at compilation time
--> $DIR/unsized6.rs:40:22
--> $DIR/unsized6.rs:40:25
|
LL | fn g2<X: ?Sized + T>(x: X) {}
| - ^ doesn't have a size known at compile-time
| - ^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `Sized`
|