rust/tests/ui/const-generics/generic_const_exprs/different-fn.stderr

error[E0308]: mismatched types
  --> $DIR/different-fn.rs:10:5
   |
LL |     [0; size_of::<Foo<T>>()]
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ expected `size_of::<T>()`, found `0`
   |
   = note: expected constant `size_of::<T>()`
              found constant `0`

error: unconstrained generic constant
  --> $DIR/different-fn.rs:10:9
   |
LL |     [0; size_of::<Foo<T>>()]
   |         ^^^^^^^^^^^^^^^^^^^
   |
help: try adding a `where` bound
   |
LL | fn test<T>() -> [u8; size_of::<T>()] where [(); size_of::<Foo<T>>()]: {
   |                                      ++++++++++++++++++++++++++++++++

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.
deal with `const_evaluatable_checked` in `ConstEquate` 2021-05-19 14:23:32 -05:00			`error[E0308]: mismatched types`
			`--> $DIR/different-fn.rs:10:5`
			`\|`
			`LL \| [0; size_of::<Foo<T>>()]`
Introduce structurally_normalize_const, use it in hir_typeck 2024-09-22 12:10:12 -05:00			\| ^^^^^^^^^^^^^^^^^^^^^^^^ expected `size_of::<T>()`, found `0`
deal with `const_evaluatable_checked` in `ConstEquate` 2021-05-19 14:23:32 -05:00			`\|`
Call them constants instead of types 2022-08-11 21:00:37 -05:00			= note: expected constant `size_of::<T>()`
Introduce structurally_normalize_const, use it in hir_typeck 2024-09-22 12:10:12 -05:00			found constant `0`
deal with `const_evaluatable_checked` in `ConstEquate` 2021-05-19 14:23:32 -05:00
look at assoc ct, check the type of nodes 2020-11-07 05:37:28 -06:00			`error: unconstrained generic constant`
			`--> $DIR/different-fn.rs:10:9`
			`\|`
			`LL \| [0; size_of::<Foo<T>>()]`
			`\| ^^^^^^^^^^^^^^^^^^^`
			`\|`
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 \| fn test<T>() -> [u8; size_of::<T>()] where [(); size_of::<Foo<T>>()]: {`
			`\| ++++++++++++++++++++++++++++++++`
look at assoc ct, check the type of nodes 2020-11-07 05:37:28 -06:00
deal with `const_evaluatable_checked` in `ConstEquate` 2021-05-19 14:23:32 -05:00			`error: aborting due to 2 previous errors`
look at assoc ct, check the type of nodes 2020-11-07 05:37:28 -06:00
deal with `const_evaluatable_checked` in `ConstEquate` 2021-05-19 14:23:32 -05:00			For more information about this error, try `rustc --explain E0308`.