Commit graph

13 commits

Author SHA1 Message Date
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
许杰友 Jieyou Xu (Joe)
ec2cc761bc
[AUTO-GENERATED] Migrate ui tests from // to //@ directives 2024-02-16 20:02:50 +00:00
Oli Scherer
a6b1e433da Remove a has_errors check that only hides errors after unrelated items have errored. 2024-01-31 16:51:42 +00:00
lcnr
11d16c4082 update use of feature flags 2023-12-14 15:22:37 +01:00
Ralf Jung
1dbfe17f12 generic_const_exprs: suggest to add the feature, not use it 2023-11-30 20:59:51 +01:00
Nilstrieb
41e8d152dc Show number in error message even for one error
Co-authored-by: Adrian <adrian.iosdev@gmail.com>
2023-11-24 19:15:52 +01:00
David Tolnay
6a02e20fb5
Update since stability attributes in tests 2023-10-23 13:04:47 -07:00
lcnr
abcaf30f9b implement ConstEvaluatable goals in new solver
we don't yet handle `generic_const_exprs`, someone else
can do that :3
2023-07-04 15:54:18 +02:00
Michael Goulet
14bf909e71 Note base types of coercion 2023-05-12 00:10:52 +00:00
ickk
30f458ed1e update tests/ui 2023-04-07 18:07:11 +10:00
Michael Goulet
a58682d7cc Specify what 'this' actually is 2023-02-21 05:21:07 +00:00
Esteban Küber
62ba3e70a1 Modify primary span label for E0308
The previous output was unintuitive to users.
2023-01-30 20:12:19 +00:00
Albert Larsan
cf2dff2b1e
Move /src/test to /tests 2023-01-11 09:32:08 +00:00