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Diffstat (limited to 'src/test/ui/traits/issue-38604.stderr')
| -rw-r--r-- | src/test/ui/traits/issue-38604.stderr | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/traits/issue-38604.stderr b/src/test/ui/traits/issue-38604.stderr new file mode 100644 index 000000000..d41488c15 --- /dev/null +++ b/src/test/ui/traits/issue-38604.stderr @@ -0,0 +1,33 @@ +error[E0038]: the trait `Foo` cannot be made into an object + --> $DIR/issue-38604.rs:14:13 + | +LL | let _f: Box<dyn Foo> = + | ^^^^^^^^^^^^ `Foo` 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> + --> $DIR/issue-38604.rs:2:22 + | +LL | trait Foo where u32: Q<Self> { + | --- ^^^^^^^ ...because it uses `Self` as a type parameter + | | + | this trait cannot be made into an object... + +error[E0038]: the trait `Foo` cannot be made into an object + --> $DIR/issue-38604.rs:15:9 + | +LL | Box::new(()); + | ^^^^^^^^^^^^ `Foo` 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> + --> $DIR/issue-38604.rs:2:22 + | +LL | trait Foo where u32: Q<Self> { + | --- ^^^^^^^ ...because it uses `Self` as a type parameter + | | + | this trait cannot be made into an object... + = note: required because of the requirements on the impl of `CoerceUnsized<Box<dyn Foo>>` for `Box<()>` + = note: required by cast to type `Box<dyn Foo>` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0038`. |