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Remove unnecessary select_obligations_where_possible and redundant errors

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This commit is contained in:
Esteban Küber 2023-08-26 19:35:54 +00:00
parent b6494a7bb4
commit ef11db803c
12 changed files with 22 additions and 105 deletions
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1
compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs
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@ -322,7 +322,6 @@ impl<'a, 'tcx> AstConv<'tcx> for FnCtxt<'a, 'tcx> {
ty.kind()
{
self.add_required_obligations_for_hir(span, *def_id, args, hir_id);
self.select_obligations_where_possible(|_| {});
}
self.normalize(span, ty)
} else {

1
tests/ui/associated-types/associated-types-invalid-trait-ref-issue-18865.rs
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@ -9,7 +9,6 @@ trait Foo<T> {
fn f<T:Foo<isize>>(t: &T) {
let u: <T as Foo<usize>>::Bar = t.get_bar();
//~^ ERROR the trait bound `T: Foo<usize>` is not satisfied
//~| ERROR the trait bound `T: Foo<usize>` is not satisfied
}
fn main() { }

13
tests/ui/associated-types/associated-types-invalid-trait-ref-issue-18865.stderr
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@ -9,17 +9,6 @@ help: consider further restricting this bound
LL | fn f<T:Foo<isize> + Foo<usize>>(t: &T) {
| ++++++++++++
error[E0277]: the trait bound `T: Foo<usize>` is not satisfied
--> $DIR/associated-types-invalid-trait-ref-issue-18865.rs:10:12
|
LL | let u: <T as Foo<usize>>::Bar = t.get_bar();
| ^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo<usize>` is not implemented for `T`
|
help: consider further restricting this bound
|
LL | fn f<T:Foo<isize> + Foo<usize>>(t: &T) {
| ++++++++++++
error: aborting due to 2 previous errors
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.

1
tests/ui/generic-associated-types/multiple-type-params-with-unmet-bounds.rs
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@ -7,5 +7,4 @@ impl Trait for () {
fn main() {
let _: <() as Trait>::P<String, String>;
//~^ ERROR the trait bound `String: Copy` is not satisfied
//~| ERROR the trait bound `String: Copy` is not satisfied
}

14
tests/ui/generic-associated-types/multiple-type-params-with-unmet-bounds.stderr
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@ -10,18 +10,6 @@ note: required by a bound in `Trait::P`
LL | type P<T: Copy, U: Copy>;
| ^^^^ required by this bound in `Trait::P`
error[E0277]: the trait bound `String: Copy` is not satisfied
--> $DIR/multiple-type-params-with-unmet-bounds.rs:8:12
|
LL | let _: <() as Trait>::P<String, String>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String`
|
note: required by a bound in `Trait::P`
--> $DIR/multiple-type-params-with-unmet-bounds.rs:2:15
|
LL | type P<T: Copy, U: Copy>;
| ^^^^ required by this bound in `Trait::P`
error: aborting due to 2 previous errors
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.

4
tests/ui/generic-associated-types/own-bound-span.rs
View File

@ -4,8 +4,6 @@ trait D {
type P<T: Copy>;
//~^ NOTE required by this bound in `D::P`
//~| NOTE required by a bound in `D::P`
//~| NOTE required by this bound in `D::P`
//~| NOTE required by a bound in `D::P`
}
impl D for S {
@ -16,6 +14,4 @@ fn main() {
let _: <S as D>::P<String>;
//~^ ERROR the trait bound `String: Copy` is not satisfied
//~| NOTE the trait `Copy` is not implemented for `String`
//~| ERROR the trait bound `String: Copy` is not satisfied
//~| NOTE the trait `Copy` is not implemented for `String`
}

16
tests/ui/generic-associated-types/own-bound-span.stderr
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@ -1,5 +1,5 @@
error[E0277]: the trait bound `String: Copy` is not satisfied
--> $DIR/own-bound-span.rs:16:24
--> $DIR/own-bound-span.rs:14:24
|
LL | let _: <S as D>::P<String>;
| ^^^^^^ the trait `Copy` is not implemented for `String`
@ -10,18 +10,6 @@ note: required by a bound in `D::P`
LL | type P<T: Copy>;
| ^^^^ required by this bound in `D::P`
error[E0277]: the trait bound `String: Copy` is not satisfied
--> $DIR/own-bound-span.rs:16:12
|
LL | let _: <S as D>::P<String>;
| ^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String`
|
note: required by a bound in `D::P`
--> $DIR/own-bound-span.rs:4:15
|
LL | type P<T: Copy>;
| ^^^^ required by this bound in `D::P`
error: aborting due to 2 previous errors
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.

1
tests/ui/issues/issue-66353.rs
View File

@ -11,6 +11,5 @@ trait _A {
fn main() {
_Func::< <() as _A>::AssocT >::func(());
//~^ ERROR the trait bound `(): _A` is not satisfied
//~| ERROR the trait bound `(): _A` is not satisfied
//~| ERROR the trait bound `(): _Func<_>` is not satisfied
}

8
tests/ui/issues/issue-66353.stderr
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@ -4,12 +4,6 @@ error[E0277]: the trait bound `(): _A` is not satisfied
LL | _Func::< <() as _A>::AssocT >::func(());
| ^^ the trait `_A` is not implemented for `()`
error[E0277]: the trait bound `(): _A` is not satisfied
--> $DIR/issue-66353.rs:12:14
|
LL | _Func::< <() as _A>::AssocT >::func(());
| ^^^^^^^^^^^^^^^^^^ the trait `_A` is not implemented for `()`
error[E0277]: the trait bound `(): _Func<_>` is not satisfied
--> $DIR/issue-66353.rs:12:41
|
@ -18,6 +12,6 @@ LL | _Func::< <() as _A>::AssocT >::func(());
| |
| required by a bound introduced by this call
error: aborting due to 3 previous errors
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.

1
tests/ui/object-safety/assoc_type_bounds_sized_used.rs
View File

@ -12,7 +12,6 @@ fn bop<T: Bop + ?Sized>() {
let _ = <T as Bop>::Bar::default();
//~^ ERROR: trait bounds were not satisfied
//~| ERROR: the size for values of type `T` cannot be known at compilation time
//~| ERROR: the size for values of type `T` cannot be known at compilation time
}
fn main() {

54
tests/ui/object-safety/assoc_type_bounds_sized_used.stderr
View File

@ -1,3 +1,17 @@
error[E0599]: the function or associated item `default` exists for associated type `<T as Bop>::Bar`, but its trait bounds were not satisfied
--> $DIR/assoc_type_bounds_sized_used.rs:12:30
|
LL | let _ = <T as Bop>::Bar::default();
| ^^^^^^^ function or associated item cannot be called on `<T as Bop>::Bar` due to unsatisfied trait bounds
|
= note: the following trait bounds were not satisfied:
`T: Sized`
which is required by `<T as Bop>::Bar: Default`
help: consider restricting the type parameter to satisfy the trait bound
|
LL | fn bop<T: Bop + ?Sized>() where T: Sized {
| ++++++++++++++
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/assoc_type_bounds_sized_used.rs:12:14
|
@ -20,44 +34,8 @@ LL - fn bop<T: Bop + ?Sized>() {
LL + fn bop<T: Bop>() {
|
error[E0599]: the function or associated item `default` exists for associated type `<T as Bop>::Bar`, but its trait bounds were not satisfied
--> $DIR/assoc_type_bounds_sized_used.rs:12:30
|
LL | let _ = <T as Bop>::Bar::default();
| ^^^^^^^ function or associated item cannot be called on `<T as Bop>::Bar` due to unsatisfied trait bounds
|
= note: the following trait bounds were not satisfied:
`T: Sized`
which is required by `<T as Bop>::Bar: Default`
help: consider restricting the type parameter to satisfy the trait bound
|
LL | fn bop<T: Bop + ?Sized>() where T: Sized {
| ++++++++++++++
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/assoc_type_bounds_sized_used.rs:12:13
|
LL | fn bop<T: Bop + ?Sized>() {
| - this type parameter needs to be `Sized`
LL | let _ = <T as Bop>::Bar::default();
| ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
|
note: required by a bound in `Bop::Bar`
--> $DIR/assoc_type_bounds_sized_used.rs:8:15
|
LL | type Bar: Default
| --- required by a bound in this associated type
LL | where
LL | Self: Sized;
| ^^^^^ required by this bound in `Bop::Bar`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
|
LL - fn bop<T: Bop + ?Sized>() {
LL + fn bop<T: Bop>() {
|
error[E0277]: the size for values of type `dyn Bop` cannot be known at compilation time
--> $DIR/assoc_type_bounds_sized_used.rs:19:11
--> $DIR/assoc_type_bounds_sized_used.rs:18:11
|
LL | bop::<dyn Bop>();
| ^^^^^^^ doesn't have a size known at compile-time
@ -69,7 +47,7 @@ note: required by a bound in `bop`
LL | fn bop<T: Bop + ?Sized>() {
| ^^^ required by this bound in `bop`
error: aborting due to 4 previous errors
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0277, E0599.
For more information about an error, try `rustc --explain E0277`.

13
tests/ui/rfcs/rfc-2632-const-trait-impl/assoc-type-const-bound-usage.stderr
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@ -9,17 +9,6 @@ help: consider further restricting this bound
LL | const fn foo<T: ~const Foo + Foo>() {
| +++++
error[E0277]: the trait bound `T: Foo` is not satisfied
--> $DIR/assoc-type-const-bound-usage.rs:12:5
|
LL | <T as Foo>::Assoc::foo();
| ^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `T`
|
help: consider further restricting this bound
|
LL | const fn foo<T: ~const Foo + Foo>() {
| +++++
error: aborting due to 2 previous errors
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.