diff options
Diffstat (limited to 'tests/ui/type-alias-impl-trait/issue-53092-2.stderr')
-rw-r--r-- | tests/ui/type-alias-impl-trait/issue-53092-2.stderr | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/issue-53092-2.stderr b/tests/ui/type-alias-impl-trait/issue-53092-2.stderr new file mode 100644 index 000000000..2565a28b4 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/issue-53092-2.stderr @@ -0,0 +1,46 @@ +error[E0391]: cycle detected when computing type of `Bug::{opaque#0}` + --> $DIR/issue-53092-2.rs:4:18 + | +LL | type Bug<T, U> = impl Fn(T) -> U + Copy; + | ^^^^^^^^^^^^^^^^^^^^^^ + | +note: ...which requires type-checking `CONST_BUG`... + --> $DIR/issue-53092-2.rs:6:1 + | +LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) }; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: ...which requires computing layout of `Bug<u8, ()>`... + = note: ...which requires normalizing `Bug<u8, ()>`... + = note: ...which again requires computing type of `Bug::{opaque#0}`, completing the cycle +note: cycle used when checking item types in top-level module + --> $DIR/issue-53092-2.rs:1:1 + | +LL | / #![feature(type_alias_impl_trait)] +LL | | #![allow(dead_code)] +LL | | +LL | | type Bug<T, U> = impl Fn(T) -> U + Copy; +... | +LL | | CONST_BUG(0); +LL | | } + | |_^ + +error[E0277]: the trait bound `U: From<T>` is not satisfied + --> $DIR/issue-53092-2.rs:9:5 + | +LL | |x| x.into() + | ^^^^^^^^^^^^ the trait `From<T>` is not implemented for `U` + | +note: required by a bound in `make_bug` + --> $DIR/issue-53092-2.rs:8:19 + | +LL | fn make_bug<T, U: From<T>>() -> Bug<T, U> { + | ^^^^^^^ required by this bound in `make_bug` +help: consider restricting type parameter `U` + | +LL | type Bug<T, U: std::convert::From<T>> = impl Fn(T) -> U + Copy; + | +++++++++++++++++++++++ + +error: aborting due to 2 previous errors + +Some errors have detailed explanations: E0277, E0391. +For more information about an error, try `rustc --explain E0277`. |