rust/tests/ui/variance/variance-associated-consts.stderr

error: unconstrained generic constant
  --> $DIR/variance-associated-consts.rs:14:12
   |
LL |     field: [u8; <T as Trait>::Const]
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: try adding a `where` bound
   |
LL | struct Foo<T: Trait> where [(); <T as Trait>::Const]: {
   |                      ++++++++++++++++++++++++++++++++

error: [o]
  --> $DIR/variance-associated-consts.rs:13:1
   |
LL | struct Foo<T: Trait> {
   | ^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors
Merge `check_mod_impl_wf` and `check_mod_type_wf` 2024-02-15 11:12:05 -06:00			`error: unconstrained generic constant`
			`--> $DIR/variance-associated-consts.rs:14:12`
			`\|`
			`LL \| field: [u8; <T as Trait>::Const]`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^^^`
			`\|`
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. 2024-03-20 19:03:59 -05:00			help: try adding a `where` bound
			`\|`
			`LL \| struct Foo<T: Trait> where [(); <T as Trait>::Const]: {`
			`\| ++++++++++++++++++++++++++++++++`
Merge `check_mod_impl_wf` and `check_mod_type_wf` 2024-02-15 11:12:05 -06:00
Revert "Auto merge of #122140 - oli-obk:track_errors13, r=davidtwco" This reverts commit 65cd843ae06ad00123c131a431ed5304e4cd577a, reversing changes made to d255c6a57c393db6221b1ff700daea478436f1cd. 2024-03-11 16:28:16 -05:00			`error: [o]`
			`--> $DIR/variance-associated-consts.rs:13:1`
			`\|`
			`LL \| struct Foo<T: Trait> {`
			`\| ^^^^^^^^^^^^^^^^^^^^`

Merge `check_mod_impl_wf` and `check_mod_type_wf` 2024-02-15 11:12:05 -06:00			`error: aborting due to 2 previous errors`
Add UI test for the variance of types appearing in consts 2021-10-12 14:50:44 -05:00