rust/tests/ui/generic-const-items/evaluatable-bounds.stderr

error: unconstrained generic constant
  --> $DIR/evaluatable-bounds.rs:14:5
   |
LL |     const ARRAY: [i32; Self::LEN];
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: try adding a `where` bound
   |
LL |     const ARRAY: [i32; Self::LEN] where [(); Self::LEN]:;
   |                                   ++++++++++++++++++++++

error: aborting due to 1 previous error
Provide structured suggestion for unconstrained generic constant ``` error: unconstrained generic constant --> $DIR/const-argument-if-length.rs:18:10 \| LL \| pad: [u8; is_zst::<T>()], \| ^^^^^^^^^^^^^^^^^^^ \| help: try adding a `where` bound \| LL \| pub struct AtLeastByte<T: ?Sized> where [(); is_zst::<T>()]: { \| ++++++++++++++++++++++++++ ``` Detect when the constant expression isn't `usize` and suggest casting: ``` error: unconstrained generic constant --> f300.rs:6:10 \| 6 \| bb::<{!N}>(); \| ^^^^ -Ztrack-diagnostics: created at compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs:3539:36 \| help: try adding a `where` bound \| 5 \| fn b<const N: bool>() where [(); {!N} as usize]: { \| ++++++++++++++++++++++++++ ``` Fix #122395. 2024-03-21 00:03:59 +00:00			`error: unconstrained generic constant`
			`--> $DIR/evaluatable-bounds.rs:14:5`
			`\|`
			`LL \| const ARRAY: [i32; Self::LEN];`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
			`\|`
			help: try adding a `where` bound
			`\|`
			`LL \| const ARRAY: [i32; Self::LEN] where [(); Self::LEN]:;`
			`\| ++++++++++++++++++++++`

			`error: aborting due to 1 previous error`