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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 computing type of opaque `Bug::{opaque#0}`...
--> $DIR/issue-53092-2.rs:4:18
|
LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires borrow-checking `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires promoting constants in MIR for `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires const checking `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires building MIR for `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires match-checking `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires type-checking `CONST_BUG`...
--> $DIR/issue-53092-2.rs:8:1
|
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 that `Bug::{opaque#0}` is well-formed
--> $DIR/issue-53092-2.rs:4:18
|
LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
error: item does not constrain `Bug::{opaque#0}`
--> $DIR/issue-53092-2.rs:8:7
|
LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^
|
= note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
note: this opaque type is supposed to be constrained
--> $DIR/issue-53092-2.rs:4:18
|
LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0391`.
|
