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give a hint which feature is missing

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This commit is contained in:
Ralf Jung 2024-11-09 23:32:06 +01:00
parent 822762c966
commit f235b6f9c6
6 changed files with 36 additions and 19 deletions
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26
compiler/rustc_const_eval/src/check_consts/ops.rs
View File

@ -89,12 +89,15 @@ impl<'tcx> NonConstOp<'tcx> for ConditionallyConstCall<'tcx> {
}
fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx> {
ccx.dcx().create_err(errors::ConditionallyConstCall {
span,
def_path_str: ccx.tcx.def_path_str_with_args(self.callee, self.args),
def_descr: ccx.tcx.def_descr(self.callee),
kind: ccx.const_kind(),
})
ccx.tcx.sess.create_feature_err(
errors::ConditionallyConstCall {
span,
def_path_str: ccx.tcx.def_path_str_with_args(self.callee, self.args),
def_descr: ccx.tcx.def_descr(self.callee),
kind: ccx.const_kind(),
},
sym::const_trait_impl,
)
}
}
@ -417,15 +420,8 @@ impl<'tcx> NonConstOp<'tcx> for Coroutine {
fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx> {
let msg = format!("{:#}s are not allowed in {}s", self.0, ccx.const_kind());
if let hir::CoroutineKind::Desugared(
hir::CoroutineDesugaring::Async,
hir::CoroutineSource::Block,
) = self.0
{
ccx.tcx.sess.create_feature_err(
errors::UnallowedOpInConstContext { span, msg },
sym::const_async_blocks,
)
if let Status::Unstable { gate, .. } = self.status_in_item(ccx) {
ccx.tcx.sess.create_feature_err(errors::UnallowedOpInConstContext { span, msg }, gate)
} else {
ccx.dcx().create_err(errors::UnallowedOpInConstContext { span, msg })
}

1
compiler/rustc_session/src/parse.rs
View File

@ -155,6 +155,7 @@ pub fn feature_warn_issue(
}
/// Adds the diagnostics for a feature to an existing error.
/// Must be a language feature!
pub fn add_feature_diagnostics<G: EmissionGuarantee>(
err: &mut Diag<'_, G>,
sess: &Session,

1
compiler/rustc_session/src/session.rs
View File

@ -300,6 +300,7 @@ impl Session {
self.opts.test
}
/// `feature` must be a language feature.
#[track_caller]
pub fn create_feature_err<'a>(&'a self, err: impl Diagnostic<'a>, feature: Symbol) -> Diag<'a> {
let mut err = self.dcx().create_err(err);

7
tests/ui/traits/const-traits/cross-crate.stock.stderr
View File

@ -1,8 +1,13 @@
error: cannot call conditionally-const method `<cross_crate::Const as cross_crate::MyTrait>::func` in constant functions
error[E0658]: cannot call conditionally-const method `<cross_crate::Const as cross_crate::MyTrait>::func` in constant functions
--> $DIR/cross-crate.rs:22:5
|
LL | Const.func();
| ^^^^^^^^^^^^
|
= note: see issue #67792 <https://github.com/rust-lang/rust/issues/67792> for more information
= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0658`.

13
tests/ui/traits/const-traits/cross-crate.stocknc.stderr
View File

@ -1,14 +1,23 @@
error: cannot call conditionally-const method `<cross_crate::NonConst as cross_crate::MyTrait>::func` in constant functions
error[E0658]: cannot call conditionally-const method `<cross_crate::NonConst as cross_crate::MyTrait>::func` in constant functions
--> $DIR/cross-crate.rs:19:5
|
LL | NonConst.func();
| ^^^^^^^^^^^^^^^
|
= note: see issue #67792 <https://github.com/rust-lang/rust/issues/67792> for more information
= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: cannot call conditionally-const method `<cross_crate::Const as cross_crate::MyTrait>::func` in constant functions
error[E0658]: cannot call conditionally-const method `<cross_crate::Const as cross_crate::MyTrait>::func` in constant functions
--> $DIR/cross-crate.rs:22:5
|
LL | Const.func();
| ^^^^^^^^^^^^
|
= note: see issue #67792 <https://github.com/rust-lang/rust/issues/67792> for more information
= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0658`.

7
tests/ui/traits/const-traits/staged-api-user-crate.stderr
View File

@ -1,8 +1,13 @@
error: cannot call conditionally-const associated function `<staged_api::Unstable as staged_api::MyTrait>::func` in constant functions
error[E0658]: cannot call conditionally-const associated function `<staged_api::Unstable as staged_api::MyTrait>::func` in constant functions
--> $DIR/staged-api-user-crate.rs:12:5
|
LL | Unstable::func();
| ^^^^^^^^^^^^^^^^
|
= note: see issue #67792 <https://github.com/rust-lang/rust/issues/67792> for more information
= help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0658`.