rust/tests/ui/rfc-2632-const-trait-impl/const-closure-trait-method-fail.stderr
Deadbeef b17e6680d6 Move const trait bounds checks to MIR constck
Fixes #109543. When checking paths in HIR typeck, we don't want to check
for const predicates since all we want might just be a function pointer.
Therefore we move this to MIR constck and check that bounds are met
during MIR constck.
2023-03-28 08:39:55 +00:00

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error[E0277]: the trait bound `(): ~const Tr` is not satisfied in `fn(()) -> i32 {<() as Tr>::a}`
--> $DIR/const-closure-trait-method-fail.rs:16:23
|
LL | const _: () = assert!(need_const_closure(Tr::a) == 42);
| ^^^^^^^^^^^^^^^^^^^^^^^^^ within `fn(()) -> i32 {<() as Tr>::a}`, the trait `~const Tr` is not implemented for `()`
|
note: the trait `Tr` is implemented for `()`, but that implementation is not `const`
--> $DIR/const-closure-trait-method-fail.rs:16:23
|
LL | const _: () = assert!(need_const_closure(Tr::a) == 42);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
= note: required because it appears within the type `fn(()) -> i32 {<() as Tr>::a}`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.