Esteban Küber 6b24fdf811 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
..
associated-const-equality.rs
basic.rs
compare-impl-item.rs
compare-impl-item.stderr
const-trait-impl.rs
duplicate-where-clause.rs
duplicate-where-clause.stderr
elided-lifetimes.rs
elided-lifetimes.stderr
evaluatable-bounds.fixed
evaluatable-bounds.rs
evaluatable-bounds.stderr
evaluatable-bounds.unconstrained.stderr
feature-gate-generic_const_items.rs
feature-gate-generic_const_items.stderr
inference-failure.rs
inference-failure.stderr
misplaced-where-clause.fixed
misplaced-where-clause.rs
misplaced-where-clause.stderr
parameter-defaults.rs
parameter-defaults.stderr
recursive.rs
reference-outlives-referent.rs
reference-outlives-referent.stderr
trivially-unsatisfied-bounds-0.rs
trivially-unsatisfied-bounds-0.stderr
trivially-unsatisfied-bounds-1.rs
trivially-unsatisfied-bounds-1.stderr
unsatisfied-bounds.rs
unsatisfied-bounds.stderr
unsatisfied-evaluatable-bounds.rs
unsatisfied-evaluatable-bounds.stderr
unsatisfied-outlives-bounds.rs
unsatisfied-outlives-bounds.stderr