bjoernager/rust
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Auto merge of #122900 - matthiaskrgr:rollup-nls90mb, r=matthiaskrgr

Browse source 
Rollup of 8 pull requests

Successful merges:

 - #114009 (compiler: allow transmute of ZST arrays with generics)
 - #122195 (Note that the caller chooses a type for type param)
 - #122651 (Suggest `_` for missing generic arguments in turbofish)
 - #122784 (Add `tag_for_variant` query)
 - #122839 (Split out `PredicatePolarity` from `ImplPolarity`)
 - #122873 (Merge my contributor emails into one using mailmap)
 - #122885 (Adjust better spastorino membership to triagebot's adhoc_groups)
 - #122888 (add a couple more tests)

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2024-03-22 22:35:11 +00:00
commit 0ad5e0d2de
72 changed files with 777 additions and 425 deletions
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4
compiler/rustc_hir_analysis/src/bounds.rs
View file

@ -42,7 +42,7 @@ impl<'tcx> Bounds<'tcx> {
tcx: TyCtxt<'tcx>,
trait_ref: ty::PolyTraitRef<'tcx>,
span: Span,
polarity: ty::ImplPolarity,
polarity: ty::PredicatePolarity,
) {
self.push_trait_bound_inner(tcx, trait_ref, span, polarity);
}
@ -52,7 +52,7 @@ impl<'tcx> Bounds<'tcx> {
tcx: TyCtxt<'tcx>,
trait_ref: ty::PolyTraitRef<'tcx>,
span: Span,
polarity: ty::ImplPolarity,
polarity: ty::PredicatePolarity,
) {
self.clauses.push((
trait_ref

2
compiler/rustc_hir_analysis/src/check/wfcheck.rs
View file

@ -1322,7 +1322,7 @@ fn check_impl<'tcx>(
trait_ref,
);
let trait_pred =
ty::TraitPredicate { trait_ref, polarity: ty::ImplPolarity::Positive };
ty::TraitPredicate { trait_ref, polarity: ty::PredicatePolarity::Positive };
let mut obligations = traits::wf::trait_obligations(
wfcx.infcx,
wfcx.param_env,

2
compiler/rustc_hir_analysis/src/coherence/builtin.rs
View file

@ -554,7 +554,7 @@ fn infringing_fields_error(
}
if let ty::PredicateKind::Clause(ty::ClauseKind::Trait(ty::TraitPredicate {
trait_ref,
polarity: ty::ImplPolarity::Positive,
polarity: ty::PredicatePolarity::Positive,
..
})) = error_predicate.kind().skip_binder()
{

4
compiler/rustc_hir_analysis/src/collect/predicates_of.rs
View file

@ -624,7 +624,7 @@ pub(super) fn implied_predicates_with_filter(
for &(pred, span) in implied_bounds {
debug!("superbound: {:?}", pred);
if let ty::ClauseKind::Trait(bound) = pred.kind().skip_binder()
&& bound.polarity == ty::ImplPolarity::Positive
&& bound.polarity == ty::PredicatePolarity::Positive
{
tcx.at(span).super_predicates_of(bound.def_id());
}
@ -634,7 +634,7 @@ pub(super) fn implied_predicates_with_filter(
for &(pred, span) in implied_bounds {
debug!("superbound: {:?}", pred);
if let ty::ClauseKind::Trait(bound) = pred.kind().skip_binder()
&& bound.polarity == ty::ImplPolarity::Positive
&& bound.polarity == ty::PredicatePolarity::Positive
{
tcx.at(span).implied_predicates_of(bound.def_id());
}

8
compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs
View file

@ -140,16 +140,16 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
hir::GenericBound::Trait(poly_trait_ref, modifier) => {
let (constness, polarity) = match modifier {
hir::TraitBoundModifier::Const => {
(ty::BoundConstness::Const, ty::ImplPolarity::Positive)
(ty::BoundConstness::Const, ty::PredicatePolarity::Positive)
}
hir::TraitBoundModifier::MaybeConst => {
(ty::BoundConstness::ConstIfConst, ty::ImplPolarity::Positive)
(ty::BoundConstness::ConstIfConst, ty::PredicatePolarity::Positive)
}
hir::TraitBoundModifier::None => {
(ty::BoundConstness::NotConst, ty::ImplPolarity::Positive)
(ty::BoundConstness::NotConst, ty::PredicatePolarity::Positive)
}
hir::TraitBoundModifier::Negative => {
(ty::BoundConstness::NotConst, ty::ImplPolarity::Negative)
(ty::BoundConstness::NotConst, ty::PredicatePolarity::Negative)
}
hir::TraitBoundModifier::Maybe => continue,
};

4
compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs
View file

@ -673,7 +673,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
trait_ref: &hir::TraitRef<'tcx>,
span: Span,
constness: ty::BoundConstness,
polarity: ty::ImplPolarity,
polarity: ty::PredicatePolarity,
self_ty: Ty<'tcx>,
bounds: &mut Bounds<'tcx>,
only_self_bounds: OnlySelfBounds,
@ -710,7 +710,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
// Don't register additional associated type bounds for negative bounds,
// since we should have emitten an error for them earlier, and they will
// not be well-formed!
if polarity == ty::ImplPolarity::Negative {
if polarity != ty::PredicatePolarity::Positive {
assert!(
self.tcx().dcx().has_errors().is_some(),
"negative trait bounds should not have bindings",

4
compiler/rustc_hir_analysis/src/hir_ty_lowering/object_safety.rs
View file

@ -43,7 +43,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
&trait_bound.trait_ref,
trait_bound.span,
ty::BoundConstness::NotConst,
ty::ImplPolarity::Positive,
ty::PredicatePolarity::Positive,
dummy_self,
&mut bounds,
// True so we don't populate `bounds` with associated type bounds, even
@ -60,7 +60,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
let bound_pred = pred.kind();
match bound_pred.skip_binder() {
ty::ClauseKind::Trait(trait_pred) => {
assert_eq!(trait_pred.polarity, ty::ImplPolarity::Positive);
assert_eq!(trait_pred.polarity, ty::PredicatePolarity::Positive);
trait_bounds.push((bound_pred.rebind(trait_pred.trait_ref), span));
}
ty::ClauseKind::Projection(proj) => {

31
compiler/rustc_hir_analysis/src/structured_errors/wrong_number_of_generic_args.rs
View file

@ -435,6 +435,22 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
&self,
num_params_to_take: usize,
) -> String {
let is_in_a_method_call = self
.tcx
.hir()
.parent_iter(self.path_segment.hir_id)
.skip(1)
.find_map(|(_, node)| match node {
hir::Node::Expr(expr) => Some(expr),
_ => None,
})
.is_some_and(|expr| {
matches!(
expr.kind,
hir::ExprKind::MethodCall(hir::PathSegment { args: Some(_), .. }, ..)
)
});
let fn_sig = self.tcx.hir().get_if_local(self.def_id).and_then(hir::Node::fn_sig);
let is_used_in_input = |def_id| {
fn_sig.is_some_and(|fn_sig| {
@ -453,14 +469,17 @@ impl<'a, 'tcx> WrongNumberOfGenericArgs<'a, 'tcx> {
.skip(self.params_offset + self.num_provided_type_or_const_args())
.take(num_params_to_take)
.map(|param| match param.kind {
// This is being inferred from the item's inputs, no need to set it.
ty::GenericParamDefKind::Type { .. } if is_used_in_input(param.def_id) => {
"_".to_string()
// If it's in method call (turbofish), it might be inferred from the expression (e.g. `.collect::<Vec<_>>()`)
// If it is being inferred from the item's inputs, no need to set it.
ty::GenericParamDefKind::Type { .. }
if is_in_a_method_call || is_used_in_input(param.def_id) =>
{
"_"
}
_ => param.name.to_string(),
_ => param.name.as_str(),
})
.collect::<Vec<_>>()
.join(", ")
.intersperse(", ")
.collect()
}
fn get_unbound_associated_types(&self) -> Vec<String> {