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9 changes: 9 additions & 0 deletions
9
tests/ui/const-generics/adt_const_params/const_param_ty_object_safety.rs
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#![feature(adt_const_params, unsized_const_parameters)] | ||
#![allow(incomplete_features)] | ||
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use std::marker::ConstParamTy_; | ||
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fn foo(a: &dyn ConstParamTy_) {} | ||
//~^ ERROR: the trait `ConstParamTy_` | ||
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fn main() {} |
18 changes: 18 additions & 0 deletions
18
tests/ui/const-generics/adt_const_params/const_param_ty_object_safety.stderr
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error[E0038]: the trait `ConstParamTy_` cannot be made into an object | ||
--> $DIR/const_param_ty_object_safety.rs:6:12 | ||
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LL | fn foo(a: &dyn ConstParamTy_) {} | ||
| ^^^^^^^^^^^^^^^^^ `ConstParamTy_` cannot be made into an object | ||
| | ||
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> | ||
--> $SRC_DIR/core/src/cmp.rs:LL:COL | ||
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= note: the trait cannot be made into an object because it uses `Self` as a type parameter | ||
help: consider using an opaque type instead | ||
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LL | fn foo(a: &impl ConstParamTy_) {} | ||
| ~~~~ | ||
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error: aborting due to 1 previous error | ||
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For more information about this error, try `rustc --explain E0038`. |
11 changes: 11 additions & 0 deletions
11
tests/ui/const-generics/adt_const_params/reference_pointee_is_const_param-1.rs
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#![feature(adt_const_params, unsized_const_parameters)] | ||
#![allow(incomplete_features)] | ||
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use std::marker::ConstParamTy_; | ||
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struct Foo; | ||
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impl ConstParamTy_ for &'static Foo {} | ||
//~^ ERROR: the trait `ConstParamTy_` cannot be implemented for this type | ||
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fn main() {} |
9 changes: 9 additions & 0 deletions
9
tests/ui/const-generics/adt_const_params/reference_pointee_is_const_param-1.stderr
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error[E0204]: the trait `ConstParamTy_` cannot be implemented for this type | ||
--> $DIR/reference_pointee_is_const_param-1.rs:8:24 | ||
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LL | impl ConstParamTy_ for &'static Foo {} | ||
| ^^^^^^^^^^^^ this field does not implement `ConstParamTy_` | ||
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error: aborting due to 1 previous error | ||
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For more information about this error, try `rustc --explain E0204`. |
6 changes: 4 additions & 2 deletions
6
tests/crashes/119299.rs → ...ams/reference_pointee_is_const_param-2.rs
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9 changes: 9 additions & 0 deletions
9
tests/ui/const-generics/adt_const_params/reference_pointee_is_const_param-2.stderr
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error[E0204]: the trait `ConstParamTy_` cannot be implemented for this type | ||
--> $DIR/reference_pointee_is_const_param-2.rs:11:24 | ||
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LL | impl ConstParamTy_ for &'static ConstStrU {} | ||
| ^^^^^^^^^^^^^^^^^^ this field does not implement `ConstParamTy_` | ||
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error: aborting due to 1 previous error | ||
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For more information about this error, try `rustc --explain E0204`. |
13 changes: 13 additions & 0 deletions
13
tests/ui/const-generics/adt_const_params/trait_objects_as_a_const_generic.rs
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#![feature(adt_const_params, unsized_const_parameters)] | ||
#![allow(incomplete_features)] | ||
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use std::marker::ConstParamTy_; | ||
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trait Trait {} | ||
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impl ConstParamTy_ for dyn Trait {} | ||
//~^ ERROR: the trait `ConstParamTy` may not be implemented for this type | ||
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fn foo<const N: dyn Trait>() {} | ||
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fn main() {} |
8 changes: 8 additions & 0 deletions
8
tests/ui/const-generics/adt_const_params/trait_objects_as_a_const_generic.stderr
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error: the trait `ConstParamTy` may not be implemented for this type | ||
--> $DIR/trait_objects_as_a_const_generic.rs:8:24 | ||
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LL | impl ConstParamTy_ for dyn Trait {} | ||
| ^^^^^^^^^ type is not a structure or enumeration | ||
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error: aborting due to 1 previous error | ||
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