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Add another test case + fmt

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This commit is contained in:
Deadbeef 2021-09-03 10:04:43 +00:00
parent 49ac725d51
commit 146abdd119
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GPG Key ID: 027DF9338862ADDD
4 changed files with 94 additions and 14 deletions
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6
compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs
View File

@ -119,10 +119,8 @@ impl Qualif for NeedsNonConstDrop {
// without having the lang item present.
return false;
};
let trait_ref = ty::TraitRef {
def_id: drop_trait,
substs: cx.tcx.mk_substs_trait(ty, &[]),
};
let trait_ref =
ty::TraitRef { def_id: drop_trait, substs: cx.tcx.mk_substs_trait(ty, &[]) };
let obligation = Obligation::new(
ObligationCause::dummy(),
cx.param_env,

42
src/test/ui/rfc-2632-const-trait-impl/const-drop-fail.precise.stderr
View File

@ -1,27 +1,59 @@
error: `~const` is not allowed here
--> $DIR/const-drop-fail.rs:27:35
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^
|
= note: only allowed on bounds on traits' associated types and functions, const fns, const impls and its associated functions
error[E0277]: the trait bound `NonTrivialDrop: Drop` is not satisfied
--> $DIR/const-drop-fail.rs:30:5
--> $DIR/const-drop-fail.rs:45:5
|
LL | NonTrivialDrop,
| ^^^^^^^^^^^^^^ the trait `Drop` is not implemented for `NonTrivialDrop`
|
note: required by a bound in `check`
--> $DIR/const-drop-fail.rs:21:19
--> $DIR/const-drop-fail.rs:36:19
|
LL | const fn check<T: ~const Drop>(_: T) {}
| ^^^^^^^^^^^ required by this bound in `check`
error[E0277]: the trait bound `ConstImplWithDropGlue: Drop` is not satisfied
--> $DIR/const-drop-fail.rs:32:5
--> $DIR/const-drop-fail.rs:47:5
|
LL | ConstImplWithDropGlue(NonTrivialDrop),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Drop` is not implemented for `ConstImplWithDropGlue`
|
note: required by a bound in `check`
--> $DIR/const-drop-fail.rs:21:19
--> $DIR/const-drop-fail.rs:36:19
|
LL | const fn check<T: ~const Drop>(_: T) {}
| ^^^^^^^^^^^ required by this bound in `check`
error: aborting due to 2 previous errors
error[E0277]: the trait bound `NonTrivialDrop: A` is not satisfied
--> $DIR/const-drop-fail.rs:49:5
|
LL | ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `A` is not implemented for `NonTrivialDrop`
|
note: required by `ConstDropImplWithBounds`
--> $DIR/const-drop-fail.rs:27:1
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0277]: the trait bound `NonTrivialDrop: A` is not satisfied
--> $DIR/const-drop-fail.rs:49:5
|
LL | ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `A` is not implemented for `NonTrivialDrop`
|
note: required by a bound in `ConstDropImplWithBounds`
--> $DIR/const-drop-fail.rs:27:35
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^ required by this bound in `ConstDropImplWithBounds`
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0277`.

18
src/test/ui/rfc-2632-const-trait-impl/const-drop-fail.rs
View File

@ -4,6 +4,8 @@
#![feature(const_fn_trait_bound)]
#![cfg_attr(precise, feature(const_precise_live_drops))]
use std::marker::PhantomData;
struct NonTrivialDrop;
impl Drop for NonTrivialDrop {
@ -18,6 +20,19 @@ impl const Drop for ConstImplWithDropGlue {
fn drop(&mut self) {}
}
trait A { fn a() { println!("A"); } }
impl A for NonTrivialDrop {}
struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
//~^ ERROR `~const` is not allowed
impl<T: ~const A> const Drop for ConstDropImplWithBounds<T> {
fn drop(&mut self) {
T::a();
}
}
const fn check<T: ~const Drop>(_: T) {}
macro_rules! check_all {
@ -31,6 +46,9 @@ check_all! {
//~^ ERROR the trait bound
ConstImplWithDropGlue(NonTrivialDrop),
//~^ ERROR the trait bound
ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
//~^ ERROR the trait bound
//~| ERROR the trait bound
}
fn main() {}

42
src/test/ui/rfc-2632-const-trait-impl/const-drop-fail.stock.stderr
View File

@ -1,27 +1,59 @@
error: `~const` is not allowed here
--> $DIR/const-drop-fail.rs:27:35
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^
|
= note: only allowed on bounds on traits' associated types and functions, const fns, const impls and its associated functions
error[E0277]: the trait bound `NonTrivialDrop: Drop` is not satisfied
--> $DIR/const-drop-fail.rs:30:5
--> $DIR/const-drop-fail.rs:45:5
|
LL | NonTrivialDrop,
| ^^^^^^^^^^^^^^ the trait `Drop` is not implemented for `NonTrivialDrop`
|
note: required by a bound in `check`
--> $DIR/const-drop-fail.rs:21:19
--> $DIR/const-drop-fail.rs:36:19
|
LL | const fn check<T: ~const Drop>(_: T) {}
| ^^^^^^^^^^^ required by this bound in `check`
error[E0277]: the trait bound `ConstImplWithDropGlue: Drop` is not satisfied
--> $DIR/const-drop-fail.rs:32:5
--> $DIR/const-drop-fail.rs:47:5
|
LL | ConstImplWithDropGlue(NonTrivialDrop),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Drop` is not implemented for `ConstImplWithDropGlue`
|
note: required by a bound in `check`
--> $DIR/const-drop-fail.rs:21:19
--> $DIR/const-drop-fail.rs:36:19
|
LL | const fn check<T: ~const Drop>(_: T) {}
| ^^^^^^^^^^^ required by this bound in `check`
error: aborting due to 2 previous errors
error[E0277]: the trait bound `NonTrivialDrop: A` is not satisfied
--> $DIR/const-drop-fail.rs:49:5
|
LL | ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `A` is not implemented for `NonTrivialDrop`
|
note: required by `ConstDropImplWithBounds`
--> $DIR/const-drop-fail.rs:27:1
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0277]: the trait bound `NonTrivialDrop: A` is not satisfied
--> $DIR/const-drop-fail.rs:49:5
|
LL | ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `A` is not implemented for `NonTrivialDrop`
|
note: required by a bound in `ConstDropImplWithBounds`
--> $DIR/const-drop-fail.rs:27:35
|
LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
| ^^^^^^^^ required by this bound in `ConstDropImplWithBounds`
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0277`.