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rust/tests/ui/const-generics/generic_const_exprs/needs_where_clause.stderr

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Add better diagnostic for missing where clause Previously, it's not clear what exactly should be added in the suggested where clause, so this adds an example to demonstrate.
2021-01-30 03:45:18 +00:00
error: unconstrained generic constant
--> $DIR/needs_where_clause.rs:11:6
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LL | b: [f32; complex_maths::<T>(N)],
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
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
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LL | struct Example<T, const N: usize> where [(); complex_maths::<T>(N)]: {
| ++++++++++++++++++++++++++++++++++
Add better diagnostic for missing where clause Previously, it's not clear what exactly should be added in the suggested where clause, so this adds an example to demonstrate.
2021-01-30 03:45:18 +00:00
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
Add better diagnostic for missing where clause Previously, it's not clear what exactly should be added in the suggested where clause, so this adds an example to demonstrate.
2021-01-30 03:45:18 +00:00
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