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Remove track_errors entirely

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This commit is contained in:
Oli Scherer 2024-01-23 15:23:22 +00:00
parent 0e4243538b
commit db7cd57091
26 changed files with 496 additions and 200 deletions
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150
compiler/rustc_hir_analysis/src/coherence/builtin.rs
View File

@ -25,14 +25,21 @@ use rustc_trait_selection::traits::ObligationCtxt;
use rustc_trait_selection::traits::{self, ObligationCause};
use std::collections::BTreeMap;
pub fn check_trait(tcx: TyCtxt<'_>, trait_def_id: DefId) {
pub fn check_trait(tcx: TyCtxt<'_>, trait_def_id: DefId) -> Result<(), ErrorGuaranteed> {
let lang_items = tcx.lang_items();
Checker { tcx, trait_def_id }
.check(lang_items.drop_trait(), visit_implementation_of_drop)
.check(lang_items.copy_trait(), visit_implementation_of_copy)
.check(lang_items.const_param_ty_trait(), visit_implementation_of_const_param_ty)
.check(lang_items.coerce_unsized_trait(), visit_implementation_of_coerce_unsized)
.check(lang_items.dispatch_from_dyn_trait(), visit_implementation_of_dispatch_from_dyn);
let checker = Checker { tcx, trait_def_id };
let mut res = checker.check(lang_items.drop_trait(), visit_implementation_of_drop);
res = res.and(checker.check(lang_items.copy_trait(), visit_implementation_of_copy));
res = res.and(
checker.check(lang_items.const_param_ty_trait(), visit_implementation_of_const_param_ty),
);
res = res.and(
checker.check(lang_items.coerce_unsized_trait(), visit_implementation_of_coerce_unsized),
);
res.and(
checker
.check(lang_items.dispatch_from_dyn_trait(), visit_implementation_of_dispatch_from_dyn),
)
}
struct Checker<'tcx> {
@ -41,33 +48,40 @@ struct Checker<'tcx> {
}
impl<'tcx> Checker<'tcx> {
fn check<F>(&self, trait_def_id: Option<DefId>, mut f: F) -> &Self
fn check<F>(&self, trait_def_id: Option<DefId>, mut f: F) -> Result<(), ErrorGuaranteed>
where
F: FnMut(TyCtxt<'tcx>, LocalDefId),
F: FnMut(TyCtxt<'tcx>, LocalDefId) -> Result<(), ErrorGuaranteed>,
{
let mut res = Ok(());
if Some(self.trait_def_id) == trait_def_id {
for &impl_def_id in self.tcx.hir().trait_impls(self.trait_def_id) {
f(self.tcx, impl_def_id);
res = res.and(f(self.tcx, impl_def_id));
}
}
self
res
}
}
fn visit_implementation_of_drop(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
fn visit_implementation_of_drop(
tcx: TyCtxt<'_>,
impl_did: LocalDefId,
) -> Result<(), ErrorGuaranteed> {
// Destructors only work on local ADT types.
match tcx.type_of(impl_did).instantiate_identity().kind() {
ty::Adt(def, _) if def.did().is_local() => return,
ty::Error(_) => return,
ty::Adt(def, _) if def.did().is_local() => return Ok(()),
ty::Error(_) => return Ok(()),
_ => {}
}
let impl_ = tcx.hir().expect_item(impl_did).expect_impl();
tcx.dcx().emit_err(errors::DropImplOnWrongItem { span: impl_.self_ty.span });
Err(tcx.dcx().emit_err(errors::DropImplOnWrongItem { span: impl_.self_ty.span }))
}
fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
fn visit_implementation_of_copy(
tcx: TyCtxt<'_>,
impl_did: LocalDefId,
) -> Result<(), ErrorGuaranteed> {
debug!("visit_implementation_of_copy: impl_did={:?}", impl_did);
let self_type = tcx.type_of(impl_did).instantiate_identity();
@ -79,59 +93,68 @@ fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
debug!("visit_implementation_of_copy: self_type={:?} (free)", self_type);
let span = match tcx.hir().expect_item(impl_did).expect_impl() {
hir::Impl { polarity: hir::ImplPolarity::Negative(_), .. } => return,
hir::Impl { polarity: hir::ImplPolarity::Negative(_), .. } => return Ok(()),
hir::Impl { self_ty, .. } => self_ty.span,
};
let cause = traits::ObligationCause::misc(span, impl_did);
match type_allowed_to_implement_copy(tcx, param_env, self_type, cause) {
Ok(()) => {}
Ok(()) => Ok(()),
Err(CopyImplementationError::InfringingFields(fields)) => {
infringing_fields_error(tcx, fields, LangItem::Copy, impl_did, span);
Err(infringing_fields_error(tcx, fields, LangItem::Copy, impl_did, span))
}
Err(CopyImplementationError::NotAnAdt) => {
tcx.dcx().emit_err(errors::CopyImplOnNonAdt { span });
Err(tcx.dcx().emit_err(errors::CopyImplOnNonAdt { span }))
}
Err(CopyImplementationError::HasDestructor) => {
tcx.dcx().emit_err(errors::CopyImplOnTypeWithDtor { span });
Err(tcx.dcx().emit_err(errors::CopyImplOnTypeWithDtor { span }))
}
}
}
fn visit_implementation_of_const_param_ty(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
fn visit_implementation_of_const_param_ty(
tcx: TyCtxt<'_>,
impl_did: LocalDefId,
) -> Result<(), ErrorGuaranteed> {
let self_type = tcx.type_of(impl_did).instantiate_identity();
assert!(!self_type.has_escaping_bound_vars());
let param_env = tcx.param_env(impl_did);
let span = match tcx.hir().expect_item(impl_did).expect_impl() {
hir::Impl { polarity: hir::ImplPolarity::Negative(_), .. } => return,
hir::Impl { polarity: hir::ImplPolarity::Negative(_), .. } => return Ok(()),
impl_ => impl_.self_ty.span,
};
let cause = traits::ObligationCause::misc(span, impl_did);
match type_allowed_to_implement_const_param_ty(tcx, param_env, self_type, cause) {
Ok(()) => {}
Ok(()) => Ok(()),
Err(ConstParamTyImplementationError::InfrigingFields(fields)) => {
infringing_fields_error(tcx, fields, LangItem::ConstParamTy, impl_did, span);
Err(infringing_fields_error(tcx, fields, LangItem::ConstParamTy, impl_did, span))
}
Err(ConstParamTyImplementationError::NotAnAdtOrBuiltinAllowed) => {
tcx.dcx().emit_err(errors::ConstParamTyImplOnNonAdt { span });
Err(tcx.dcx().emit_err(errors::ConstParamTyImplOnNonAdt { span }))
}
}
}
fn visit_implementation_of_coerce_unsized(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
fn visit_implementation_of_coerce_unsized(
tcx: TyCtxt<'_>,
impl_did: LocalDefId,
) -> Result<(), ErrorGuaranteed> {
debug!("visit_implementation_of_coerce_unsized: impl_did={:?}", impl_did);
// Just compute this for the side-effects, in particular reporting
// errors; other parts of the code may demand it for the info of
// course.
let span = tcx.def_span(impl_did);
tcx.at(span).coerce_unsized_info(impl_did);
tcx.at(span).ensure().coerce_unsized_info(impl_did)
}
fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
fn visit_implementation_of_dispatch_from_dyn(
tcx: TyCtxt<'_>,
impl_did: LocalDefId,
) -> Result<(), ErrorGuaranteed> {
debug!("visit_implementation_of_dispatch_from_dyn: impl_did={:?}", impl_did);
let span = tcx.def_span(impl_did);
@ -166,26 +189,28 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef
match (source.kind(), target.kind()) {
(&Ref(r_a, _, mutbl_a), Ref(r_b, _, mutbl_b))
if infcx.at(&cause, param_env).eq(DefineOpaqueTypes::No, r_a, *r_b).is_ok()
&& mutbl_a == *mutbl_b => {}
(&RawPtr(tm_a), &RawPtr(tm_b)) if tm_a.mutbl == tm_b.mutbl => (),
&& mutbl_a == *mutbl_b =>
{
Ok(())
}
(&RawPtr(tm_a), &RawPtr(tm_b)) if tm_a.mutbl == tm_b.mutbl => Ok(()),
(&Adt(def_a, args_a), &Adt(def_b, args_b)) if def_a.is_struct() && def_b.is_struct() => {
if def_a != def_b {
let source_path = tcx.def_path_str(def_a.did());
let target_path = tcx.def_path_str(def_b.did());
tcx.dcx().emit_err(errors::DispatchFromDynCoercion {
return Err(tcx.dcx().emit_err(errors::DispatchFromDynCoercion {
span,
trait_name: "DispatchFromDyn",
note: true,
source_path,
target_path,
});
return;
}));
}
let mut res = Ok(());
if def_a.repr().c() || def_a.repr().packed() {
tcx.dcx().emit_err(errors::DispatchFromDynRepr { span });
res = Err(tcx.dcx().emit_err(errors::DispatchFromDynRepr { span }));
}
let fields = &def_a.non_enum_variant().fields;
@ -207,11 +232,11 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef
infcx.at(&cause, param_env).eq(DefineOpaqueTypes::No, ty_a, ty_b)
{
if ok.obligations.is_empty() {
tcx.dcx().emit_err(errors::DispatchFromDynZST {
res = Err(tcx.dcx().emit_err(errors::DispatchFromDynZST {
span,
name: field.name,
ty: ty_a,
});
}));
return false;
}
@ -222,13 +247,13 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef
.collect::<Vec<_>>();
if coerced_fields.is_empty() {
tcx.dcx().emit_err(errors::DispatchFromDynSingle {
res = Err(tcx.dcx().emit_err(errors::DispatchFromDynSingle {
span,
trait_name: "DispatchFromDyn",
note: true,
});
}));
} else if coerced_fields.len() > 1 {
tcx.dcx().emit_err(errors::DispatchFromDynMulti {
res = Err(tcx.dcx().emit_err(errors::DispatchFromDynMulti {
span,
coercions_note: true,
number: coerced_fields.len(),
@ -244,7 +269,7 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef
})
.collect::<Vec<_>>()
.join(", "),
});
}));
} else {
let ocx = ObligationCtxt::new(&infcx);
for field in coerced_fields {
@ -261,21 +286,25 @@ fn visit_implementation_of_dispatch_from_dyn(tcx: TyCtxt<'_>, impl_did: LocalDef
}
let errors = ocx.select_all_or_error();
if !errors.is_empty() {
infcx.err_ctxt().report_fulfillment_errors(errors);
res = Err(infcx.err_ctxt().report_fulfillment_errors(errors));
}
// Finally, resolve all regions.
let outlives_env = OutlivesEnvironment::new(param_env);
let _ = ocx.resolve_regions_and_report_errors(impl_did, &outlives_env);
res = res.and(ocx.resolve_regions_and_report_errors(impl_did, &outlives_env));
}
res
}
_ => {
tcx.dcx().emit_err(errors::CoerceUnsizedMay { span, trait_name: "DispatchFromDyn" });
}
_ => Err(tcx
.dcx()
.emit_err(errors::CoerceUnsizedMay { span, trait_name: "DispatchFromDyn" })),
}
}
pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> CoerceUnsizedInfo {
pub fn coerce_unsized_info<'tcx>(
tcx: TyCtxt<'tcx>,
impl_did: LocalDefId,
) -> Result<CoerceUnsizedInfo, ErrorGuaranteed> {
debug!("compute_coerce_unsized_info(impl_did={:?})", impl_did);
let span = tcx.def_span(impl_did);
@ -292,8 +321,6 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
let param_env = tcx.param_env(impl_did);
assert!(!source.has_escaping_bound_vars());
let err_info = CoerceUnsizedInfo { custom_kind: None };
debug!("visit_implementation_of_coerce_unsized: {:?} -> {:?} (free)", source, target);
let infcx = tcx.infer_ctxt().build();
@ -337,14 +364,13 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
if def_a != def_b {
let source_path = tcx.def_path_str(def_a.did());
let target_path = tcx.def_path_str(def_b.did());
tcx.dcx().emit_err(errors::DispatchFromDynSame {
return Err(tcx.dcx().emit_err(errors::DispatchFromDynSame {
span,
trait_name: "CoerceUnsized",
note: true,
source_path,
target_path,
});
return err_info;
}));
}
// Here we are considering a case of converting
@ -419,12 +445,11 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
.collect::<Vec<_>>();
if diff_fields.is_empty() {
tcx.dcx().emit_err(errors::CoerceUnsizedOneField {
return Err(tcx.dcx().emit_err(errors::CoerceUnsizedOneField {
span,
trait_name: "CoerceUnsized",
note: true,
});
return err_info;
}));
} else if diff_fields.len() > 1 {
let item = tcx.hir().expect_item(impl_did);
let span = if let ItemKind::Impl(hir::Impl { of_trait: Some(t), .. }) = &item.kind {
@ -433,7 +458,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
tcx.def_span(impl_did)
};
tcx.dcx().emit_err(errors::CoerceUnsizedMulti {
return Err(tcx.dcx().emit_err(errors::CoerceUnsizedMulti {
span,
coercions_note: true,
number: diff_fields.len(),
@ -442,9 +467,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
.map(|&(i, a, b)| format!("`{}` (`{}` to `{}`)", fields[i].name, a, b))
.collect::<Vec<_>>()
.join(", "),
});
return err_info;
}));
}
let (i, a, b) = diff_fields[0];
@ -453,8 +476,9 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
}
_ => {
tcx.dcx().emit_err(errors::DispatchFromDynStruct { span, trait_name: "CoerceUnsized" });
return err_info;
return Err(tcx
.dcx()
.emit_err(errors::DispatchFromDynStruct { span, trait_name: "CoerceUnsized" }));
}
};
@ -477,7 +501,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: LocalDefId) -> Coe
let outlives_env = OutlivesEnvironment::new(param_env);
let _ = ocx.resolve_regions_and_report_errors(impl_did, &outlives_env);
CoerceUnsizedInfo { custom_kind: kind }
Ok(CoerceUnsizedInfo { custom_kind: kind })
}
fn infringing_fields_error(

55
compiler/rustc_hir_analysis/src/coherence/mod.rs
View File

@ -10,6 +10,7 @@ use rustc_errors::{error_code, struct_span_code_err};
use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_middle::query::Providers;
use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt};
use rustc_span::ErrorGuaranteed;
use rustc_trait_selection::traits;
mod builtin;
@ -18,7 +19,11 @@ mod inherent_impls_overlap;
mod orphan;
mod unsafety;
fn check_impl(tcx: TyCtxt<'_>, impl_def_id: LocalDefId, trait_ref: ty::TraitRef<'_>) {
fn check_impl(
tcx: TyCtxt<'_>,
impl_def_id: LocalDefId,
trait_ref: ty::TraitRef<'_>,
) -> Result<(), ErrorGuaranteed> {
debug!(
"(checking implementation) adding impl for trait '{:?}', item '{}'",
trait_ref,
@ -28,18 +33,18 @@ fn check_impl(tcx: TyCtxt<'_>, impl_def_id: LocalDefId, trait_ref: ty::TraitRef<
// Skip impls where one of the self type is an error type.
// This occurs with e.g., resolve failures (#30589).
if trait_ref.references_error() {
return;
return Ok(());
}
enforce_trait_manually_implementable(tcx, impl_def_id, trait_ref.def_id);
enforce_empty_impls_for_marker_traits(tcx, impl_def_id, trait_ref.def_id);
enforce_trait_manually_implementable(tcx, impl_def_id, trait_ref.def_id)
.and(enforce_empty_impls_for_marker_traits(tcx, impl_def_id, trait_ref.def_id))
}
fn enforce_trait_manually_implementable(
tcx: TyCtxt<'_>,
impl_def_id: LocalDefId,
trait_def_id: DefId,
) {
) -> Result<(), ErrorGuaranteed> {
let impl_header_span = tcx.def_span(impl_def_id);
// Disallow *all* explicit impls of traits marked `#[rustc_deny_explicit_impl]`
@ -59,18 +64,17 @@ fn enforce_trait_manually_implementable(
err.code(error_code!(E0328));
}
err.emit();
return;
return Err(err.emit());
}
if let ty::trait_def::TraitSpecializationKind::AlwaysApplicable =
tcx.trait_def(trait_def_id).specialization_kind
{
if !tcx.features().specialization && !tcx.features().min_specialization {
tcx.dcx().emit_err(errors::SpecializationTrait { span: impl_header_span });
return;
return Err(tcx.dcx().emit_err(errors::SpecializationTrait { span: impl_header_span }));
}
}
Ok(())
}
/// We allow impls of marker traits to overlap, so they can't override impls
@ -79,22 +83,22 @@ fn enforce_empty_impls_for_marker_traits(
tcx: TyCtxt<'_>,
impl_def_id: LocalDefId,
trait_def_id: DefId,
) {
) -> Result<(), ErrorGuaranteed> {
if !tcx.trait_def(trait_def_id).is_marker {
return;
return Ok(());
}
if tcx.associated_item_def_ids(trait_def_id).is_empty() {
return;
return Ok(());
}
struct_span_code_err!(
Err(struct_span_code_err!(
tcx.dcx(),
tcx.def_span(impl_def_id),
E0715,
"impls for marker traits cannot contain items"
)
.emit();
.emit())
}
pub fn provide(providers: &mut Providers) {
@ -115,23 +119,23 @@ pub fn provide(providers: &mut Providers) {
};
}
fn coherent_trait(tcx: TyCtxt<'_>, def_id: DefId) {
fn coherent_trait(tcx: TyCtxt<'_>, def_id: DefId) -> Result<(), ErrorGuaranteed> {
// Trigger building the specialization graph for the trait. This will detect and report any
// overlap errors.
tcx.ensure().specialization_graph_of(def_id);
let mut res = tcx.ensure().specialization_graph_of(def_id);
let impls = tcx.hir().trait_impls(def_id);
for &impl_def_id in impls {
let trait_ref = tcx.impl_trait_ref(impl_def_id).unwrap().instantiate_identity();
check_impl(tcx, impl_def_id, trait_ref);
check_object_overlap(tcx, impl_def_id, trait_ref);
res = res.and(check_impl(tcx, impl_def_id, trait_ref));
res = res.and(check_object_overlap(tcx, impl_def_id, trait_ref));
unsafety::check_item(tcx, impl_def_id);
tcx.ensure().orphan_check_impl(impl_def_id);
res = res.and(unsafety::check_item(tcx, impl_def_id));
res = res.and(tcx.ensure().orphan_check_impl(impl_def_id));
}
builtin::check_trait(tcx, def_id);
res.and(builtin::check_trait(tcx, def_id))
}
/// Checks whether an impl overlaps with the automatic `impl Trait for dyn Trait`.
@ -139,12 +143,12 @@ fn check_object_overlap<'tcx>(
tcx: TyCtxt<'tcx>,
impl_def_id: LocalDefId,
trait_ref: ty::TraitRef<'tcx>,
) {
) -> Result<(), ErrorGuaranteed> {
let trait_def_id = trait_ref.def_id;
if trait_ref.references_error() {
debug!("coherence: skipping impl {:?} with error {:?}", impl_def_id, trait_ref);
return;
return Ok(());
}
// check for overlap with the automatic `impl Trait for dyn Trait`
@ -173,7 +177,7 @@ fn check_object_overlap<'tcx>(
let mut supertrait_def_ids = traits::supertrait_def_ids(tcx, component_def_id);
if supertrait_def_ids.any(|d| d == trait_def_id) {
let span = tcx.def_span(impl_def_id);
struct_span_code_err!(
return Err(struct_span_code_err!(
tcx.dcx(),
span,
E0371,
@ -189,9 +193,10 @@ fn check_object_overlap<'tcx>(
tcx.def_path_str(trait_def_id)
),
)
.emit();
.emit());
}
}
}
}
Ok(())
}

16
compiler/rustc_hir_analysis/src/coherence/unsafety.rs
View File

@ -6,8 +6,9 @@ use rustc_hir as hir;
use rustc_hir::Unsafety;
use rustc_middle::ty::TyCtxt;
use rustc_span::def_id::LocalDefId;
use rustc_span::ErrorGuaranteed;
pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Result<(), ErrorGuaranteed> {
let item = tcx.hir().expect_item(def_id);
let impl_ = item.expect_impl();
@ -18,7 +19,7 @@ pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
impl_.generics.params.iter().find(|p| p.pure_wrt_drop).map(|_| "may_dangle");
match (trait_def.unsafety, unsafe_attr, impl_.unsafety, impl_.polarity) {
(Unsafety::Normal, None, Unsafety::Unsafe, hir::ImplPolarity::Positive) => {
struct_span_code_err!(
return Err(struct_span_code_err!(
tcx.dcx(),
tcx.def_span(def_id),
E0199,
@ -31,11 +32,11 @@ pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
"",
rustc_errors::Applicability::MachineApplicable,
)
.emit();
.emit());
}
(Unsafety::Unsafe, _, Unsafety::Normal, hir::ImplPolarity::Positive) => {
struct_span_code_err!(
return Err(struct_span_code_err!(
tcx.dcx(),
tcx.def_span(def_id),
E0200,
@ -54,11 +55,11 @@ pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
"unsafe ",
rustc_errors::Applicability::MaybeIncorrect,
)
.emit();
.emit());
}
(Unsafety::Normal, Some(attr_name), Unsafety::Normal, hir::ImplPolarity::Positive) => {
struct_span_code_err!(
return Err(struct_span_code_err!(
tcx.dcx(),
tcx.def_span(def_id),
E0569,
@ -77,7 +78,7 @@ pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
"unsafe ",
rustc_errors::Applicability::MaybeIncorrect,
)
.emit();
.emit());
}
(_, _, Unsafety::Unsafe, hir::ImplPolarity::Negative(_)) => {
@ -92,4 +93,5 @@ pub(super) fn check_item(tcx: TyCtxt<'_>, def_id: LocalDefId) {
}
}
}
Ok(())
}

16
compiler/rustc_hir_analysis/src/lib.rs
View File

@ -172,19 +172,15 @@ pub fn check_crate(tcx: TyCtxt<'_>) -> Result<(), ErrorGuaranteed> {
tcx.sess.time("coherence_checking", || {
// Check impls constrain their parameters
let res =
let mut res =
tcx.hir().try_par_for_each_module(|module| tcx.ensure().check_mod_impl_wf(module));
// FIXME(matthewjasper) We shouldn't need to use `track_errors` anywhere in this function
// or the compiler in general.
res.and(tcx.sess.track_errors(|| {
for &trait_def_id in tcx.all_local_trait_impls(()).keys() {
tcx.ensure().coherent_trait(trait_def_id);
}
}))
for &trait_def_id in tcx.all_local_trait_impls(()).keys() {
res = res.and(tcx.ensure().coherent_trait(trait_def_id));
}
// these queries are executed for side-effects (error reporting):
.and(tcx.ensure().crate_inherent_impls(()))
.and(tcx.ensure().crate_inherent_impls_overlap_check(()))
res.and(tcx.ensure().crate_inherent_impls(()))
.and(tcx.ensure().crate_inherent_impls_overlap_check(()))
})?;
if tcx.features().rustc_attrs {

9
compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs
View File

@ -236,7 +236,14 @@ provide! { tcx, def_id, other, cdata,
impl_polarity => { table_direct }
defaultness => { table_direct }
constness => { table_direct }
coerce_unsized_info => { table }
coerce_unsized_info => {
Ok(cdata
.root
.tables
.coerce_unsized_info
.get(cdata, def_id.index)
.map(|lazy| lazy.decode((cdata, tcx)))
.process_decoded(tcx, || panic!("{def_id:?} does not have coerce_unsized_info"))) }
mir_const_qualif => { table }
rendered_const => { table }
asyncness => { table_direct }

2
compiler/rustc_metadata/src/rmeta/encoder.rs
View File

@ -1994,7 +1994,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
// if this is an impl of `CoerceUnsized`, create its
// "unsized info", else just store None
if Some(trait_ref.def_id) == tcx.lang_items().coerce_unsized_trait() {
let coerce_unsized_info = tcx.coerce_unsized_info(def_id);
let coerce_unsized_info = tcx.coerce_unsized_info(def_id).unwrap();
record!(self.tables.coerce_unsized_info[def_id] <- coerce_unsized_info);
}
}

5
compiler/rustc_middle/src/query/erase.rs
View File

@ -1,6 +1,7 @@
use crate::mir;
use crate::query::CyclePlaceholder;
use crate::traits;
use crate::ty::adjustment::CoerceUnsizedInfo;
use crate::ty::{self, Ty};
use std::intrinsics::transmute_unchecked;
use std::mem::{size_of, MaybeUninit};
@ -105,6 +106,10 @@ impl EraseType for Result<Option<ty::Instance<'_>>, rustc_errors::ErrorGuarantee
[u8; size_of::<Result<Option<ty::Instance<'static>>, rustc_errors::ErrorGuaranteed>>()];
}
impl EraseType for Result<CoerceUnsizedInfo, rustc_errors::ErrorGuaranteed> {
type Result = [u8; size_of::<Result<CoerceUnsizedInfo, rustc_errors::ErrorGuaranteed>>()];
}
impl EraseType for Result<Option<ty::EarlyBinder<ty::Const<'_>>>, rustc_errors::ErrorGuaranteed> {
type Result = [u8; size_of::<
Result<Option<ty::EarlyBinder<ty::Const<'static>>>, rustc_errors::ErrorGuaranteed>,

8
compiler/rustc_middle/src/query/mod.rs
View File

@ -968,10 +968,11 @@ rustc_queries! {
}
/// Caches `CoerceUnsized` kinds for impls on custom types.
query coerce_unsized_info(key: DefId) -> ty::adjustment::CoerceUnsizedInfo {
query coerce_unsized_info(key: DefId) -> Result<ty::adjustment::CoerceUnsizedInfo, ErrorGuaranteed> {
desc { |tcx| "computing CoerceUnsized info for `{}`", tcx.def_path_str(key) }
cache_on_disk_if { key.is_local() }
separate_provide_extern
ensure_forwards_result_if_red
}
query typeck(key: LocalDefId) -> &'tcx ty::TypeckResults<'tcx> {
@ -991,8 +992,9 @@ rustc_queries! {
desc { |tcx| "checking whether `{}` has a body", tcx.def_path_str(def_id) }
}
query coherent_trait(def_id: DefId) -> () {
query coherent_trait(def_id: DefId) -> Result<(), ErrorGuaranteed> {
desc { |tcx| "coherence checking all impls of trait `{}`", tcx.def_path_str(def_id) }
ensure_forwards_result_if_red
}
/// Borrow-checks the function body. If this is a closure, returns
@ -1023,6 +1025,7 @@ rustc_queries! {
"checking whether impl `{}` follows the orphan rules",
tcx.def_path_str(key),
}
ensure_forwards_result_if_red
}
/// Check whether the function has any recursion that could cause the inliner to trigger
@ -1291,6 +1294,7 @@ rustc_queries! {
query specialization_graph_of(trait_id: DefId) -> Result<&'tcx specialization_graph::Graph, ErrorGuaranteed> {
desc { |tcx| "building specialization graph of trait `{}`", tcx.def_path_str(trait_id) }
cache_on_disk_if { true }
ensure_forwards_result_if_red
}
query object_safety_violations(trait_id: DefId) -> &'tcx [ObjectSafetyViolation] {
desc { |tcx| "determining object safety of trait `{}`", tcx.def_path_str(trait_id) }

2
compiler/rustc_middle/src/ty/util.rs
View File

@ -350,7 +350,7 @@ impl<'tcx> TyCtxt<'tcx> {
validate: impl Fn(Self, DefId) -> Result<(), ErrorGuaranteed>,
) -> Option<ty::Destructor> {
let drop_trait = self.lang_items().drop_trait()?;
self.ensure().coherent_trait(drop_trait);
self.ensure().coherent_trait(drop_trait).ok()?;
let ty = self.type_of(adt_did).instantiate_identity();
let mut dtor_candidate = None;

8
compiler/rustc_monomorphize/src/collector.rs
View File

@ -1114,7 +1114,13 @@ fn find_vtable_types_for_unsizing<'tcx>(
assert_eq!(source_adt_def, target_adt_def);
let CustomCoerceUnsized::Struct(coerce_index) =
crate::custom_coerce_unsize_info(tcx, source_ty, target_ty);
match crate::custom_coerce_unsize_info(tcx, source_ty, target_ty) {
Ok(ccu) => ccu,
Err(e) => {
let e = Ty::new_error(tcx.tcx, e);
return (e, e);
}
};
let source_fields = &source_adt_def.non_enum_variant().fields;
let target_fields = &target_adt_def.non_enum_variant().fields;

5
compiler/rustc_monomorphize/src/lib.rs
View File

@ -15,6 +15,7 @@ use rustc_middle::query::{Providers, TyCtxtAt};
use rustc_middle::traits;
use rustc_middle::ty::adjustment::CustomCoerceUnsized;
use rustc_middle::ty::{self, Ty};
use rustc_span::ErrorGuaranteed;
mod collector;
mod errors;
@ -28,7 +29,7 @@ fn custom_coerce_unsize_info<'tcx>(
tcx: TyCtxtAt<'tcx>,
source_ty: Ty<'tcx>,
target_ty: Ty<'tcx>,
) -> CustomCoerceUnsized {
) -> Result<CustomCoerceUnsized, ErrorGuaranteed> {
let trait_ref = ty::TraitRef::from_lang_item(
tcx.tcx,
LangItem::CoerceUnsized,
@ -40,7 +41,7 @@ fn custom_coerce_unsize_info<'tcx>(
Ok(traits::ImplSource::UserDefined(traits::ImplSourceUserDefinedData {
impl_def_id,
..
})) => tcx.coerce_unsized_info(impl_def_id).custom_kind.unwrap(),
})) => Ok(tcx.coerce_unsized_info(impl_def_id)?.custom_kind.unwrap()),
impl_source => {
bug!("invalid `CoerceUnsized` impl_source: {:?}", impl_source);
}

14
compiler/rustc_session/src/session.rs
View File

@ -332,20 +332,6 @@ impl Session {
}
}
// FIXME(matthewjasper) Remove this method, it should never be needed.
pub fn track_errors<F, T>(&self, f: F) -> Result<T, ErrorGuaranteed>
where
F: FnOnce() -> T,
{
let old_count = self.dcx().err_count();
let result = f();
if self.dcx().err_count() == old_count {
Ok(result)
} else {
Err(self.dcx().delayed_bug("`self.err_count()` changed but an error was not emitted"))
}
}
/// Used for code paths of expensive computations that should only take place when
/// warnings or errors are emitted. If no messages are emitted ("good path"), then
/// it's likely a bug.

1
tests/ui/associated-consts/issue-105330.rs
View File

@ -14,6 +14,5 @@ fn foo<A: TraitWAssocConst<A=32>>() { //~ ERROR E0658
fn main<A: TraitWAssocConst<A=32>>() {
//~^ ERROR E0658
//~| ERROR E0131
foo::<Demo>();
}

12
tests/ui/associated-consts/issue-105330.stderr
View File

@ -43,13 +43,7 @@ LL | impl TraitWAssocConst for impl Demo {
|
= note: `impl Trait` is only allowed in arguments and return types of functions and methods
error[E0131]: `main` function is not allowed to have generic parameters
--> $DIR/issue-105330.rs:15:8
|
LL | fn main<A: TraitWAssocConst<A=32>>() {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` cannot have generic parameters
error: aborting due to 5 previous errors
error: aborting due to 6 previous errors
Some errors have detailed explanations: E0131, E0404, E0562, E0658.
For more information about an error, try `rustc --explain E0131`.
Some errors have detailed explanations: E0404, E0562, E0658.
For more information about an error, try `rustc --explain E0404`.

15
tests/ui/associated-types/issue-38821.rs
View File

@ -22,7 +22,22 @@ pub trait Column: Expression {}
#[derive(Debug, Copy, Clone)]
//~^ ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
pub enum ColumnInsertValue<Col, Expr> where
//~^ ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
//~| ERROR the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
Col: Column,
Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>,
{

268
tests/ui/associated-types/issue-38821.stderr
View File

@ -17,6 +17,272 @@ help: consider further restricting the associated type
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error: aborting due to 1 previous error
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:38:1
|
LL | pub enum ColumnInsertValue<Col, Expr> where
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
help: consider extending the `where` clause, but there might be an alternative better way to express this requirement
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:38:1
|
LL | / pub enum ColumnInsertValue<Col, Expr> where
LL | |
LL | |
LL | | Col: Column,
... |
LL | | Default(Col),
LL | | }
| |_^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
help: consider extending the `where` clause, but there might be an alternative better way to express this requirement
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:17
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Copy` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider further restricting the associated type
|
LL | Expr: Expression<SqlType=<Col::SqlType as IntoNullable>::Nullable>, <Col as Expression>::SqlType: NotNull,
| +++++++++++++++++++++++++++++++++++++++
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:10
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `<Col as Expression>::SqlType: NotNull` is not satisfied
--> $DIR/issue-38821.rs:23:23
|
LL | #[derive(Debug, Copy, Clone)]
| ^^^^^ the trait `NotNull` is not implemented for `<Col as Expression>::SqlType`
|
note: required for `<Col as Expression>::SqlType` to implement `IntoNullable`
--> $DIR/issue-38821.rs:9:18
|
LL | impl<T: NotNull> IntoNullable for T {
| ------- ^^^^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 16 previous errors
For more information about this error, try `rustc --explain E0277`.

2
tests/ui/coercion/issue-53475.rs
View File

@ -3,7 +3,7 @@
use std::any::Any;
use std::ops::CoerceUnsized;
struct Foo<T> {
struct Foo<T: ?Sized> {
data: Box<T>,
}

1
tests/ui/const-generics/bad-generic-in-copy-impl.rs
View File

@ -2,6 +2,7 @@
pub struct Foo {
x: [u8; SIZE],
//~^ ERROR mismatched types
//~| ERROR mismatched types
}
const SIZE: u32 = 1;

10
tests/ui/const-generics/bad-generic-in-copy-impl.stderr
View File

@ -4,6 +4,14 @@ error[E0308]: mismatched types
LL | x: [u8; SIZE],
| ^^^^ expected `usize`, found `u32`
error: aborting due to 1 previous error
error[E0308]: mismatched types
--> $DIR/bad-generic-in-copy-impl.rs:3:13
|
LL | x: [u8; SIZE],
| ^^^^ expected `usize`, found `u32`
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.

1
tests/ui/enum-discriminant/issue-72554.rs
View File

@ -3,6 +3,7 @@ use std::collections::BTreeSet;
#[derive(Hash)]
pub enum ElemDerived {
//~^ ERROR recursive type `ElemDerived` has infinite size
//~| ERROR cycle detected
A(ElemDerived)
}

21
tests/ui/enum-discriminant/issue-72554.stderr
View File

@ -3,7 +3,7 @@ error[E0072]: recursive type `ElemDerived` has infinite size
|
LL | pub enum ElemDerived {
| ^^^^^^^^^^^^^^^^^^^^
LL |
...
LL | A(ElemDerived)
| ----------- recursive without indirection
|
@ -12,6 +12,21 @@ help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
LL | A(Box<ElemDerived>)
| ++++ +
error: aborting due to 1 previous error
error[E0391]: cycle detected when computing drop-check constraints for `ElemDerived`
--> $DIR/issue-72554.rs:4:1
|
LL | pub enum ElemDerived {
| ^^^^^^^^^^^^^^^^^^^^
|
= note: ...which immediately requires computing drop-check constraints for `ElemDerived` again
note: cycle used when computing drop-check constraints for `Elem`
--> $DIR/issue-72554.rs:11:1
|
LL | pub enum Elem {
| ^^^^^^^^^^^^^
= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
For more information about this error, try `rustc --explain E0072`.
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0072, E0391.
For more information about an error, try `rustc --explain E0072`.

14
tests/ui/rfcs/rfc-2632-const-trait-impl/specializing-constness-2.stderr
View File

@ -7,16 +7,6 @@ LL | impl<T: Default> A for T {
LL | impl<T: Default + ~const Sup> const A for T {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation
error[E0308]: mismatched types
--> $DIR/specializing-constness-2.rs:27:5
|
LL | <T as A>::a();
| ^^^^^^^^^^^^^ expected `host`, found `true`
|
= note: expected constant `host`
found constant `true`
error: aborting due to 1 previous error
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0119, E0308.
For more information about an error, try `rustc --explain E0119`.
For more information about this error, try `rustc --explain E0119`.

1
tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.rs
View File

@ -6,7 +6,6 @@
struct S<const L: usize>;
impl<const N: i32> Copy for S<N> {}
//~^ ERROR the constant `N` is not of type `usize`
impl<const M: usize> Copy for S<M> {}
//~^ ERROR: conflicting implementations of trait `Copy` for type `S<_>`

22
tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.stderr
View File

@ -1,29 +1,11 @@
error[E0119]: conflicting implementations of trait `Copy` for type `S<_>`
--> $DIR/bad-const-wf-doesnt-specialize.rs:10:1
--> $DIR/bad-const-wf-doesnt-specialize.rs:9:1
|
LL | impl<const N: i32> Copy for S<N> {}
| -------------------------------- first implementation here
LL |
LL | impl<const M: usize> Copy for S<M> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `S<_>`
error: the constant `N` is not of type `usize`
--> $DIR/bad-const-wf-doesnt-specialize.rs:8:29
|
LL | impl<const N: i32> Copy for S<N> {}
| ^^^^ expected `usize`, found `i32`
|
note: required for `S<N>` to implement `Clone`
--> $DIR/bad-const-wf-doesnt-specialize.rs:5:10
|
LL | #[derive(Clone)]
| ^^^^^
LL | struct S<const L: usize>;
| ----- unsatisfied trait bound introduced in this `derive` macro
note: required by a bound in `Copy`
--> $SRC_DIR/core/src/marker.rs:LL:COL
= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0119`.

1
tests/ui/typeck/typeck_type_placeholder_item.rs
View File

@ -198,7 +198,6 @@ trait Qux {
//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types
}
impl Qux for Struct {
//~^ ERROR: not all trait items implemented, missing: `F`
type A = _;
//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types
type B = _;

37
tests/ui/typeck/typeck_type_placeholder_item.stderr
View File

@ -29,7 +29,7 @@ LL | struct BadStruct2<_, T>(_, T);
| ^ expected identifier, found reserved identifier
error: associated constant in `impl` without body
--> $DIR/typeck_type_placeholder_item.rs:206:5
--> $DIR/typeck_type_placeholder_item.rs:205:5
|
LL | const C: _;
| ^^^^^^^^^^-
@ -411,7 +411,7 @@ LL | type Y = impl Trait<_>;
| ^ not allowed in type signatures
error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
--> $DIR/typeck_type_placeholder_item.rs:217:31
--> $DIR/typeck_type_placeholder_item.rs:216:31
|
LL | fn value() -> Option<&'static _> {
| ----------------^-
@ -420,7 +420,7 @@ LL | fn value() -> Option<&'static _> {
| help: replace with the correct return type: `Option<&'static u8>`
error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
--> $DIR/typeck_type_placeholder_item.rs:222:10
--> $DIR/typeck_type_placeholder_item.rs:221:10
|
LL | const _: Option<_> = map(value);
| ^^^^^^^^^
@ -429,7 +429,7 @@ LL | const _: Option<_> = map(value);
| help: replace with the correct type: `Option<u8>`
error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
--> $DIR/typeck_type_placeholder_item.rs:225:31
--> $DIR/typeck_type_placeholder_item.rs:224:31
|
LL | fn evens_squared(n: usize) -> _ {
| ^
@ -438,13 +438,13 @@ LL | fn evens_squared(n: usize) -> _ {
| help: replace with an appropriate return type: `impl Iterator<Item = usize>`
error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants
--> $DIR/typeck_type_placeholder_item.rs:230:10
--> $DIR/typeck_type_placeholder_item.rs:229:10
|
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
| ^ not allowed in type signatures
|
note: however, the inferred type `Map<Filter<Range<i32>, {closure@typeck_type_placeholder_item.rs:230:29}>, {closure@typeck_type_placeholder_item.rs:230:49}>` cannot be named
--> $DIR/typeck_type_placeholder_item.rs:230:14
note: however, the inferred type `Map<Filter<Range<i32>, {closure@typeck_type_placeholder_item.rs:229:29}>, {closure@typeck_type_placeholder_item.rs:229:49}>` cannot be named
--> $DIR/typeck_type_placeholder_item.rs:229:14
|
LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -631,25 +631,25 @@ LL | fn clone_from(&mut self, other: &FnTest9) { *self = FnTest9; }
| ~~~~~~~~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
--> $DIR/typeck_type_placeholder_item.rs:202:14
--> $DIR/typeck_type_placeholder_item.rs:201:14
|
LL | type A = _;
| ^ not allowed in type signatures
error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types
--> $DIR/typeck_type_placeholder_item.rs:204:14
--> $DIR/typeck_type_placeholder_item.rs:203:14
|
LL | type B = _;
| ^ not allowed in type signatures
error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated constants
--> $DIR/typeck_type_placeholder_item.rs:206:14
--> $DIR/typeck_type_placeholder_item.rs:205:14
|
LL | const C: _;
| ^ not allowed in type signatures
error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated constants
--> $DIR/typeck_type_placeholder_item.rs:209:14
--> $DIR/typeck_type_placeholder_item.rs:208:14
|
LL | const D: _ = 42;
| ^
@ -657,16 +657,7 @@ LL | const D: _ = 42;
| not allowed in type signatures
| help: replace with the correct type: `i32`
error[E0046]: not all trait items implemented, missing: `F`
--> $DIR/typeck_type_placeholder_item.rs:200:1
|
LL | type F: std::ops::Fn(_);
| ----------------------- `F` from trait
...
LL | impl Qux for Struct {
| ^^^^^^^^^^^^^^^^^^^ missing `F` in implementation
error: aborting due to 71 previous errors
error: aborting due to 72 previous errors
Some errors have detailed explanations: E0046, E0121, E0282, E0403.
For more information about an error, try `rustc --explain E0046`.
Some errors have detailed explanations: E0121, E0282, E0403.
For more information about an error, try `rustc --explain E0121`.