mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
72 lines
2.9 KiB
Plaintext
72 lines
2.9 KiB
Plaintext
error[E0658]: cannot borrow here, since the borrowed element may contain interior mutability
|
|
--> $DIR/const-promoted-opaque.rs:29:25
|
|
|
|
|
LL | let _: &'static _ = &FOO;
|
|
| ^^^^
|
|
|
|
|
= note: see issue #80384 <https://github.com/rust-lang/rust/issues/80384> for more information
|
|
= help: add `#![feature(const_refs_to_cell)]` to the crate attributes to enable
|
|
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
|
|
|
|
error[E0493]: destructor of `helper::Foo` cannot be evaluated at compile-time
|
|
--> $DIR/const-promoted-opaque.rs:29:26
|
|
|
|
|
LL | let _: &'static _ = &FOO;
|
|
| ^^^ the destructor for this type cannot be evaluated in constants
|
|
...
|
|
LL | };
|
|
| - value is dropped here
|
|
|
|
error[E0492]: constants cannot refer to interior mutable data
|
|
--> $DIR/const-promoted-opaque.rs:34:19
|
|
|
|
|
LL | const BAZ: &Foo = &FOO;
|
|
| ^^^^ this borrow of an interior mutable value may end up in the final value
|
|
|
|
error[E0716]: temporary value dropped while borrowed
|
|
--> $DIR/const-promoted-opaque.rs:38:26
|
|
|
|
|
LL | let _: &'static _ = &FOO;
|
|
| ---------- ^^^ creates a temporary value which is freed while still in use
|
|
| |
|
|
| type annotation requires that borrow lasts for `'static`
|
|
LL |
|
|
LL | }
|
|
| - temporary value is freed at the end of this statement
|
|
|
|
error[E0391]: cycle detected when computing type of opaque `helper::Foo::{opaque#0}`
|
|
--> $DIR/const-promoted-opaque.rs:14:20
|
|
|
|
|
LL | pub type Foo = impl Sized;
|
|
| ^^^^^^^^^^
|
|
|
|
|
note: ...which requires borrow-checking `helper::FOO`...
|
|
--> $DIR/const-promoted-opaque.rs:18:5
|
|
|
|
|
LL | pub const FOO: Foo = String::new();
|
|
| ^^^^^^^^^^^^^^^^^^
|
|
note: ...which requires promoting constants in MIR for `helper::FOO`...
|
|
--> $DIR/const-promoted-opaque.rs:18:5
|
|
|
|
|
LL | pub const FOO: Foo = String::new();
|
|
| ^^^^^^^^^^^^^^^^^^
|
|
note: ...which requires const checking `helper::FOO`...
|
|
--> $DIR/const-promoted-opaque.rs:18:5
|
|
|
|
|
LL | pub const FOO: Foo = String::new();
|
|
| ^^^^^^^^^^^^^^^^^^
|
|
= note: ...which requires computing whether `helper::Foo` is freeze...
|
|
= note: ...which requires evaluating trait selection obligation `helper::Foo: core::marker::Freeze`...
|
|
= note: ...which again requires computing type of opaque `helper::Foo::{opaque#0}`, completing the cycle
|
|
note: cycle used when computing type of `helper::Foo::{opaque#0}`
|
|
--> $DIR/const-promoted-opaque.rs:14:20
|
|
|
|
|
LL | pub type Foo = impl Sized;
|
|
| ^^^^^^^^^^
|
|
= 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: aborting due to 5 previous errors
|
|
|
|
Some errors have detailed explanations: E0391, E0492, E0493, E0658, E0716.
|
|
For more information about an error, try `rustc --explain E0391`.
|