rust/tests/ui/const-generics/issues/issue-67739.full.stderr

error: unconstrained generic constant
  --> $DIR/issue-67739.rs:11:15
   |
LL |         [0u8; mem::size_of::<Self::Associated>()];
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: try adding a `where` bound
   |
LL |     fn associated_size(&self) -> usize where [(); mem::size_of::<Self::Associated>()]: {
   |                                        +++++++++++++++++++++++++++++++++++++++++++++++

error: aborting due to 1 previous error
`feature(const_generics)` -> `feature(const_param_types)` 2021-08-27 18:04:57 +02:00			`error: unconstrained generic constant`
update tests 2020-11-17 11:44:21 +01:00			`--> $DIR/issue-67739.rs:11:15`
typeck: workaround WF hole in `to_const`. 2020-03-27 01:46:24 +02:00			`\|`
			`LL \| [0u8; mem::size_of::<Self::Associated>()];`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
			`\|`
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			help: try adding a `where` bound
			`\|`
			`LL \| fn associated_size(&self) -> usize where [(); mem::size_of::<Self::Associated>()]: {`
			`\| +++++++++++++++++++++++++++++++++++++++++++++++`
typeck: workaround WF hole in `to_const`. 2020-03-27 01:46:24 +02:00
Show number in error message even for one error Co-authored-by: Adrian <adrian.iosdev@gmail.com> 2023-11-21 15:44:16 +00:00			`error: aborting due to 1 previous error`
typeck: workaround WF hole in `to_const`. 2020-03-27 01:46:24 +02:00