bjoernager/rust
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Provide structured suggestion for #![feature(foo)]

Browse source 
```
error: `S2<'_>` is forbidden as the type of a const generic parameter
  --> $DIR/lifetime-in-const-param.rs:5:23
   |
LL | struct S<'a, const N: S2>(&'a ());
   |                       ^^
   |
   = note: the only supported types are integers, `bool` and `char`
help: add `#![feature(adt_const_params)]` to the crate attributes to enable more complex and user defined types
   |
LL + #![feature(adt_const_params)]
   |
```

Fix #55941.
This commit is contained in:
Esteban Küber 2024-03-07 22:09:00 +00:00
parent 22e241e32e
commit 6c31f6ce12
98 changed files with 755 additions and 253 deletions
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8
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
View file

@ -3510,9 +3510,11 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
}
ObligationCauseCode::TrivialBound => {
err.help("see issue #48214");
if tcx.sess.opts.unstable_features.is_nightly_build() {
err.help("add `#![feature(trivial_bounds)]` to the crate attributes to enable");
}
tcx.disabled_nightly_features(
err,
Some(tcx.local_def_id_to_hir_id(body_id)),
[(String::new(), sym::trivial_bounds)],
);
}
ObligationCauseCode::OpaqueReturnType(expr_info) => {
if let Some((expr_ty, expr_span)) = expr_info {