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
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auxiliary
complex-generic-default-expr.min.stderr
complex-generic-default-expr.rs
complex-unord-param.rs
const-default.rs
const-param-as-default-value.rs
const-param-in-ty-defaults.rs
default-annotation.rs
default-const-param-cannot-reference-self.rs
default-const-param-cannot-reference-self.stderr
default-on-impl.rs
default-on-impl.stderr
default-param-wf-concrete.next.stderr
default-param-wf-concrete.old.stderr
default-param-wf-concrete.rs
doesnt_infer.rs
doesnt_infer.stderr
external.rs
forward-declared.rs
forward-declared.stderr
generic-expr-default-concrete.rs
generic-expr-default-concrete.stderr
generic-expr-default-mismatched-types.rs
generic-expr-default-mismatched-types.stderr
generic-expr-default.rs
generic-expr-default.stderr
intermixed-lifetime.rs
intermixed-lifetime.stderr
mismatch.rs
mismatch.stderr
mismatched_ty_const_in_trait_impl.rs
mismatched_ty_const_in_trait_impl.stderr
param-order-err-pretty-prints-default.rs
param-order-err-pretty-prints-default.stderr
pretty-printing-ast.rs
pretty-printing-ast.stdout
repr-c-issue-82792.rs
rp_impl_trait_fail.rs
rp_impl_trait_fail.stderr
rp_impl_trait.rs
self-referential.rs
self-referential.stderr
simple-defaults.rs
trait_object_lt_defaults.rs
trait_objects_fail.rs
trait_objects_fail.stderr
trait_objects.rs
type-default-const-param-name.rs
wfness.rs
wfness.stderr
wrong-order.rs
wrong-order.stderr