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Additional wf test

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This commit is contained in:
Michael Goulet 2023-06-30 20:05:17 +00:00
parent a14285ca7e
commit b0ab37eb08
3 changed files with 51 additions and 10 deletions
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27
tests/ui/impl-trait/in-trait/wf-bounds.current.stderr
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@ -1,5 +1,5 @@
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:13:22
--> $DIR/wf-bounds.rs:17:22
|
LL | fn nya() -> impl Wf<Vec<[u8]>>;
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
@ -9,14 +9,14 @@ note: required by a bound in `Vec`
--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:16:23
--> $DIR/wf-bounds.rs:20:23
|
LL | fn nya2() -> impl Wf<[u8]>;
| ^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `Wf`
--> $DIR/wf-bounds.rs:8:10
--> $DIR/wf-bounds.rs:10:10
|
LL | trait Wf<T> {
| ^ required by this bound in `Wf`
@ -26,7 +26,7 @@ LL | trait Wf<T: ?Sized> {
| ++++++++
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:19:44
--> $DIR/wf-bounds.rs:23:44
|
LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>;
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
@ -35,6 +35,23 @@ LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>;
note: required by a bound in `Vec`
--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
error: aborting due to 3 previous errors
error[E0277]: `T` doesn't implement `std::fmt::Display`
--> $DIR/wf-bounds.rs:26:26
|
LL | fn nya4<T>() -> impl Wf<NeedsDisplay<T>>;
| ^^^^^^^^^^^^^^^^^^^ `T` cannot be formatted with the default formatter
|
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
note: required by a bound in `NeedsDisplay`
--> $DIR/wf-bounds.rs:14:24
|
LL | struct NeedsDisplay<T: Display>(T);
| ^^^^^^^ required by this bound in `NeedsDisplay`
help: consider restricting type parameter `T`
|
LL | fn nya4<T: std::fmt::Display>() -> impl Wf<NeedsDisplay<T>>;
| +++++++++++++++++++
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0277`.

27
tests/ui/impl-trait/in-trait/wf-bounds.next.stderr
View File

@ -1,5 +1,5 @@
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:13:22
--> $DIR/wf-bounds.rs:17:22
|
LL | fn nya() -> impl Wf<Vec<[u8]>>;
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
@ -9,14 +9,14 @@ note: required by a bound in `Vec`
--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:16:23
--> $DIR/wf-bounds.rs:20:23
|
LL | fn nya2() -> impl Wf<[u8]>;
| ^^^^^^^^ doesn't have a size known at compile-time
|
= help: the trait `Sized` is not implemented for `[u8]`
note: required by a bound in `Wf`
--> $DIR/wf-bounds.rs:8:10
--> $DIR/wf-bounds.rs:10:10
|
LL | trait Wf<T> {
| ^ required by this bound in `Wf`
@ -26,7 +26,7 @@ LL | trait Wf<T: ?Sized> {
| ++++++++
error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/wf-bounds.rs:19:44
--> $DIR/wf-bounds.rs:23:44
|
LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>;
| ^^^^^^^^^^^^^ doesn't have a size known at compile-time
@ -35,6 +35,23 @@ LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>;
note: required by a bound in `Vec`
--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
error: aborting due to 3 previous errors
error[E0277]: `T` doesn't implement `std::fmt::Display`
--> $DIR/wf-bounds.rs:26:26
|
LL | fn nya4<T>() -> impl Wf<NeedsDisplay<T>>;
| ^^^^^^^^^^^^^^^^^^^ `T` cannot be formatted with the default formatter
|
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
note: required by a bound in `NeedsDisplay`
--> $DIR/wf-bounds.rs:14:24
|
LL | struct NeedsDisplay<T: Display>(T);
| ^^^^^^^ required by this bound in `NeedsDisplay`
help: consider restricting type parameter `T`
|
LL | fn nya4<T: std::fmt::Display>() -> impl Wf<NeedsDisplay<T>>;
| +++++++++++++++++++
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0277`.

7
tests/ui/impl-trait/in-trait/wf-bounds.rs
View File

@ -5,10 +5,14 @@
#![feature(return_position_impl_trait_in_trait)]
#![allow(incomplete_features)]
use std::fmt::Display;
trait Wf<T> {
type Output;
}
struct NeedsDisplay<T: Display>(T);
trait Uwu {
fn nya() -> impl Wf<Vec<[u8]>>;
//~^ ERROR the size for values of type `[u8]` cannot be known at compilation time
@ -18,6 +22,9 @@ trait Uwu {
fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>;
//~^ ERROR the size for values of type `[u8]` cannot be known at compilation time
fn nya4<T>() -> impl Wf<NeedsDisplay<T>>;
//~^ ERROR `T` doesn't implement `std::fmt::Display`
}
fn main() {}