diff options
Diffstat (limited to 'src/test/ui/parser/trait-object-trait-parens.stderr')
| -rw-r--r-- | src/test/ui/parser/trait-object-trait-parens.stderr | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/test/ui/parser/trait-object-trait-parens.stderr b/src/test/ui/parser/trait-object-trait-parens.stderr new file mode 100644 index 000000000..7ee965bd2 --- /dev/null +++ b/src/test/ui/parser/trait-object-trait-parens.stderr @@ -0,0 +1,97 @@ +error: `?Trait` is not permitted in trait object types + --> $DIR/trait-object-trait-parens.rs:8:24 + | +LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>; + | ^^^^^^^^ + +error: `?Trait` is not permitted in trait object types + --> $DIR/trait-object-trait-parens.rs:13:16 + | +LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>; + | ^^^^^^ + +error: `?Trait` is not permitted in trait object types + --> $DIR/trait-object-trait-parens.rs:18:44 + | +LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>; + | ^^^^^^^^ + +warning: trait objects without an explicit `dyn` are deprecated + --> $DIR/trait-object-trait-parens.rs:8:16 + | +LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `#[warn(bare_trait_objects)]` on by default + = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! + = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> +help: use `dyn` + | +LL - let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>; +LL + let _: Box<dyn (Obj) + (?Sized) + (for<'a> Trait<'a>)>; + | + +error[E0225]: only auto traits can be used as additional traits in a trait object + --> $DIR/trait-object-trait-parens.rs:8:35 + | +LL | let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>; + | ----- ^^^^^^^^^^^^^^^^^^^ additional non-auto trait + | | + | first non-auto trait + | + = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: Obj + for<'a> Trait<'a> {}` + = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits> + +warning: trait objects without an explicit `dyn` are deprecated + --> $DIR/trait-object-trait-parens.rs:13:16 + | +LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! + = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> +help: use `dyn` + | +LL - let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>; +LL + let _: Box<dyn ?Sized + (for<'a> Trait<'a>) + (Obj)>; + | + +error[E0225]: only auto traits can be used as additional traits in a trait object + --> $DIR/trait-object-trait-parens.rs:13:47 + | +LL | let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>; + | ------------------- ^^^^^ additional non-auto trait + | | + | first non-auto trait + | + = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}` + = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits> + +warning: trait objects without an explicit `dyn` are deprecated + --> $DIR/trait-object-trait-parens.rs:18:16 + | +LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! + = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> +help: use `dyn` + | +LL - let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>; +LL + let _: Box<dyn for<'a> Trait<'a> + (Obj) + (?Sized)>; + | + +error[E0225]: only auto traits can be used as additional traits in a trait object + --> $DIR/trait-object-trait-parens.rs:18:36 + | +LL | let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>; + | ----------------- ^^^^^ additional non-auto trait + | | + | first non-auto trait + | + = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}` + = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits> + +error: aborting due to 6 previous errors; 3 warnings emitted + +For more information about this error, try `rustc --explain E0225`. |