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Partially implement ConstArgHasType
This commit is contained in:
Boxy
parent
da159eb331
commit
d5bd4e233d
@ -22,11 +22,10 @@ use super::glb::Glb;
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use super::lub::Lub;
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use super::type_relating::TypeRelating;
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use super::StructurallyRelateAliases;
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use crate::infer::{DefineOpaqueTypes, InferCtxt, InferOk, TypeTrace};
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use crate::infer::{DefineOpaqueTypes, InferCtxt, TypeTrace};
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use crate::traits::{Obligation, PredicateObligations};
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use rustc_middle::bug;
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use rustc_middle::infer::unify_key::EffectVarValue;
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use rustc_middle::traits::ObligationCause;
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use rustc_middle::ty::error::{ExpectedFound, TypeError};
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use rustc_middle::ty::relate::{RelateResult, TypeRelation};
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use rustc_middle::ty::{self, InferConst, Ty, TyCtxt, TypeVisitableExt, Upcast};
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@ -159,12 +158,6 @@ impl<'tcx> InferCtxt<'tcx> {
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let a = self.shallow_resolve_const(a);
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let b = self.shallow_resolve_const(b);
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// It is always an error if the types of two constants that are related are not equal.
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let InferOk { value: (), obligations } = self
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.at(&ObligationCause::dummy_with_span(relation.span()), relation.param_env())
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.eq(DefineOpaqueTypes::No, a.ty(), b.ty())?;
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relation.register_obligations(obligations);
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match (a.kind(), b.kind()) {
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(
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ty::ConstKind::Infer(InferConst::Var(a_vid)),
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@ -197,8 +197,30 @@ impl<'a, 'tcx> EvalCtxt<'a, InferCtxt<'tcx>> {
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goal: Goal<'tcx, (ty::Const<'tcx>, Ty<'tcx>)>,
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) -> QueryResult<'tcx> {
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let (ct, ty) = goal.predicate;
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self.eq(goal.param_env, ct.ty(), ty)?;
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self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes)
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// FIXME(BoxyUwU): Really we should not be calling `ct.ty()` for any variant
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// other than `ConstKind::Value`. Unfortunately this would require looking in the
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// env for any `ConstArgHasType` assumptions for parameters and placeholders. I
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// have not yet gotten around to implementing this though.
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//
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// We do still stall on infer vars though as otherwise a goal like:
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// `ConstArgHasType(?x: usize, usize)` can succeed even though it might later
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// get unified with some const that is not of type `usize`.
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match ct.kind() {
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// FIXME: Ignore effect vars because canonicalization doesn't handle them correctly
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// and if we stall on the var then we wind up creating ambiguity errors in a probe
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// for this goal which contains an effect var. Which then ends up ICEing.
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ty::ConstKind::Infer(ty::InferConst::Var(_)) => {
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self.evaluate_added_goals_and_make_canonical_response(Certainty::AMBIGUOUS)
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}
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ty::ConstKind::Error(_) => {
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self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes)
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}
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_ => {
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self.eq(goal.param_env, ct.ty(), ty)?;
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self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes)
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}
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}
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}
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}
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@ -2685,6 +2685,22 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
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.with_span_label(span, format!("cannot satisfy `{predicate}`"))
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}
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}
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// Given some `ConstArgHasType(?x, usize)`, we should not emit an error such as
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// "type annotations needed: cannot satisfy the constant `_` has type `usize`"
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// Instead we should emit a normal error suggesting the user to turbofish the
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// const parameter that is currently being inferred. Unfortunately we cannot
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// nicely emit such an error so we delay an ICE incase nobody else reports it
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// for us.
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ty::PredicateKind::Clause(ty::ClauseKind::ConstArgHasType(ct, ty)) => {
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return self.tcx.sess.dcx().span_delayed_bug(
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span,
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format!(
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"`ambiguous ConstArgHasType({:?}, {:?}) unaccompanied by inference error`",
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ct, ty
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),
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);
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}
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_ => {
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if let Some(e) = self.tainted_by_errors() {
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return e;
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@ -429,16 +429,37 @@ impl<'a, 'tcx> ObligationProcessor for FulfillProcessor<'a, 'tcx> {
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// This is because this is not ever a useful obligation to report
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// as the cause of an overflow.
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ty::PredicateKind::Clause(ty::ClauseKind::ConstArgHasType(ct, ty)) => {
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match self.selcx.infcx.at(&obligation.cause, obligation.param_env).eq(
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// Only really excercised by generic_const_exprs
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DefineOpaqueTypes::Yes,
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ct.ty(),
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ty,
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) {
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Ok(inf_ok) => ProcessResult::Changed(mk_pending(inf_ok.into_obligations())),
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Err(_) => ProcessResult::Error(FulfillmentErrorCode::Select(
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SelectionError::Unimplemented,
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)),
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// FIXME(BoxyUwU): Really we should not be calling `ct.ty()` for any variant
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// other than `ConstKind::Value`. Unfortunately this would require looking in the
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// env for any `ConstArgHasType` assumptions for parameters and placeholders. I
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// don't really want to implement this in the old solver so I haven't.
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//
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// We do still stall on infer vars though as otherwise a goal like:
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// `ConstArgHasType(?x: usize, usize)` can succeed even though it might later
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// get unified with some const that is not of type `usize`.
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let ct = self.selcx.infcx.shallow_resolve_const(ct);
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match ct.kind() {
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ty::ConstKind::Infer(ty::InferConst::Var(vid)) => {
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pending_obligation.stalled_on.clear();
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pending_obligation.stalled_on.extend([TyOrConstInferVar::Const(vid)]);
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ProcessResult::Unchanged
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}
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ty::ConstKind::Error(_) => return ProcessResult::Changed(vec![]),
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_ => {
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match self.selcx.infcx.at(&obligation.cause, obligation.param_env).eq(
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// Only really excercised by generic_const_exprs
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DefineOpaqueTypes::Yes,
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ct.ty(),
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ty,
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) {
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Ok(inf_ok) => {
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ProcessResult::Changed(mk_pending(inf_ok.into_obligations()))
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}
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Err(_) => ProcessResult::Error(FulfillmentErrorCode::Select(
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SelectionError::Unimplemented,
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)),
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}
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}
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}
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}
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@ -992,10 +992,27 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
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}
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ty::PredicateKind::Ambiguous => Ok(EvaluatedToAmbig),
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ty::PredicateKind::Clause(ty::ClauseKind::ConstArgHasType(ct, ty)) => {
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// FIXME(BoxyUwU): Really we should not be calling `ct.ty()` for any variant
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// other than `ConstKind::Value`. Unfortunately this would require looking in the
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// env for any `ConstArgHasType` assumptions for parameters and placeholders. I
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// don't really want to implement this in the old solver so I haven't.
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//
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// We do still stall on infer vars though as otherwise a goal like:
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// `ConstArgHasType(?x: usize, usize)` can succeed even though it might later
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// get unified with some const that is not of type `usize`.
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let ct = self.infcx.shallow_resolve_const(ct);
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let ct_ty = match ct.kind() {
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ty::ConstKind::Infer(ty::InferConst::Var(_)) => {
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return Ok(EvaluatedToAmbig);
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}
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ty::ConstKind::Error(_) => return Ok(EvaluatedToOk),
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_ => ct.ty(),
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};
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match self.infcx.at(&obligation.cause, obligation.param_env).eq(
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// Only really excercised by generic_const_exprs
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DefineOpaqueTypes::Yes,
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ct.ty(),
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ct_ty,
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ty,
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) {
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Ok(inf_ok) => self.evaluate_predicates_recursively(
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@ -1,17 +1,14 @@
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//@ known-bug: #121858
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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struct Outer<const A: i64, const B: usize>();
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impl<const A: usize, const B: usize> Outer<A, B>
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//~^ ERROR: `A` is not of type `i64`
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//~| ERROR: mismatched types
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where
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[(); A + (B * 2)]:,
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{
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fn o() {}
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fn o() -> Union {}
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}
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fn main() {
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Outer::<1, 1>::o();
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//~^ ERROR: no function or associated item named `o` found
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}
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@ -1,12 +0,0 @@
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//@ known-bug: #122638
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#![feature(min_specialization)]
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impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, { N }> {
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fn next(&mut self) -> Option<Self::Item> {}
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}
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struct ConstChunksExact<'a, T: '_, const assert: usize> {}
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impl<'a, T: std::fmt::Debug, const N: usize> Iterator for ConstChunksExact<'a, T, {}> {
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type Item = &'a [T; N];
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}
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@ -1,23 +0,0 @@
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//@ known-bug: #123141
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trait ConstChunksExactTrait<T> {
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fn const_chunks_exact<const N: usize>(&self) -> ConstChunksExact<'_, T, {N}>;
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}
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impl <T> ConstChunksExactTrait<T> for [T] {}
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struct ConstChunksExact<'a, T: 'a, const N: usize> {}
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impl <'a, T: , const N: usize> Iterator for ConstChunksExact<'a, T, {rem}> {
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type Item = &'a [T; N];
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}
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fn main() {
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let slice = &[1i32, 2, 3, 4, 5, 6, 7, 7, 9, 1i32];
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let mut iter = [[1, 2, 3], [4, 5, 6], [7, 8 ,9]].iter();
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for a in slice.const_chunks_exact::<3>() {
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assert_eq!(a, iter.next().unwrap());
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}
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}
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@ -1,22 +1,23 @@
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//@ known-bug: #123141
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trait ConstChunksExactTrait<T> {
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fn const_chunks_exact<const N: usize>(&self) -> ConstChunksExact<'_, T, { N }>;
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trait Trait {
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fn next(self) -> Self::Item;
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type Item;
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}
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impl<T> ConstChunksExactTrait<T> for [T] {}
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struct Foo<T: ?Sized>(T);
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struct ConstChunksExact<'a, T: 'a, const N: usize> {}
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impl<T: ?Sized, U> Trait for Foo<U> {
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type Item = Foo<T>;
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fn next(self) -> Self::Item {
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loop {}
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}
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}
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impl<'a, T, const N: usize> Iterator for ConstChunksExact<'a, T, { rem }> {
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type Item = &'a [T; N];
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fn opaque() -> impl Trait {
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Foo::<_>(10_u32)
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}
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fn main() {
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let slice = &[1i32, 2, 3, 4, 5, 6, 7, 7, 9, 1i32];
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let mut iter = [[1, 2, 3], [4, 5, 6], [7, 8, 9]].iter();
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for a in slice.const_chunks_exact::<3>() {
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assert_eq!(a, iter.next().unwrap());
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}
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opaque().next();
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}
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@ -8,5 +8,6 @@ impl<const N: u8> Trait for [(); N] {}
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//~^ ERROR: mismatched types
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impl<const N: i8> Trait for [(); N] {}
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//~^ ERROR: mismatched types
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//~| ERROR: conflicting implementations of trait `Trait`
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fn main() {}
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@ -1,3 +1,12 @@
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error[E0119]: conflicting implementations of trait `Trait` for type `[(); _]`
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--> $DIR/generic_const_type_mismatch.rs:9:1
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LL | impl<const N: u8> Trait for [(); N] {}
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| ----------------------------------- first implementation here
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LL |
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LL | impl<const N: i8> Trait for [(); N] {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `[(); _]`
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error[E0308]: mismatched types
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--> $DIR/generic_const_type_mismatch.rs:7:34
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@ -10,6 +19,7 @@ error[E0308]: mismatched types
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LL | impl<const N: i8> Trait for [(); N] {}
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| ^ expected `usize`, found `i8`
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error: aborting due to 2 previous errors
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0308`.
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Some errors have detailed explanations: E0119, E0308.
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For more information about an error, try `rustc --explain E0119`.
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@ -1,5 +1,7 @@
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//@ known-bug: #114456
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//@ check-pass
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#![feature(adt_const_params, lazy_type_alias)]
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//~^ WARN: the feature `adt_const_params` is incomplete
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//~| WARN: the feature `lazy_type_alias` is incomplete
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pub type Matrix = [usize; 1];
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const EMPTY_MATRIX: Matrix = [0; 1];
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@ -0,0 +1,19 @@
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warning: the feature `adt_const_params` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/alias_const_param_ty-1.rs:2:12
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LL | #![feature(adt_const_params, lazy_type_alias)]
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| ^^^^^^^^^^^^^^^^
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|
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= note: see issue #95174 <https://github.com/rust-lang/rust/issues/95174> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: the feature `lazy_type_alias` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/alias_const_param_ty-1.rs:2:30
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LL | #![feature(adt_const_params, lazy_type_alias)]
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| ^^^^^^^^^^^^^^^
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|
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= note: see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
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warning: 2 warnings emitted
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@ -1,5 +1,6 @@
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//@ known-bug: #114456
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//@ check-pass
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#![feature(adt_const_params)]
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//~^ WARN: the feature `adt_const_params` is incomplete
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const EMPTY_MATRIX: <Type as Trait>::Matrix = [0; 1];
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@ -12,8 +13,12 @@ impl Walk<EMPTY_MATRIX> {
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}
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pub enum Type {}
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pub trait Trait { type Matrix; }
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impl Trait for Type { type Matrix = [usize; 1]; }
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pub trait Trait {
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type Matrix;
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}
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impl Trait for Type {
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type Matrix = [usize; 1];
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}
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fn main() {
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let _ = Walk::new();
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@ -0,0 +1,11 @@
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warning: the feature `adt_const_params` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/alias_const_param_ty-2.rs:2:12
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|
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LL | #![feature(adt_const_params)]
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| ^^^^^^^^^^^^^^^^
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|
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= note: see issue #95174 <https://github.com/rust-lang/rust/issues/95174> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: 1 warning emitted
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@ -10,5 +10,7 @@ impl<const N: u64> Q for [u8; N] {
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const ASSOC: usize = 1;
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}
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pub fn test() -> [u8; <[u8; 13] as Q>::ASSOC] { todo!() }
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//~^ ERROR: `[u8; 13]: Q` is not satisfied
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pub fn test() -> [u8; <[u8; 13] as Q>::ASSOC] {
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//~^ ERROR: the constant `13` is not of type `u64`
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todo!()
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}
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@ -1,10 +1,16 @@
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error[E0277]: the trait bound `[u8; 13]: Q` is not satisfied
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error: the constant `13` is not of type `u64`
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--> $DIR/bad-subst-const-kind.rs:13:24
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|
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LL | pub fn test() -> [u8; <[u8; 13] as Q>::ASSOC] { todo!() }
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| ^^^^^^^^ the trait `Q` is not implemented for `[u8; 13]`
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LL | pub fn test() -> [u8; <[u8; 13] as Q>::ASSOC] {
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| ^^^^^^^^ expected `u64`, found `usize`
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|
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= help: the trait `Q` is implemented for `[u8; N]`
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note: required for `[u8; 13]` to implement `Q`
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--> $DIR/bad-subst-const-kind.rs:8:20
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|
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LL | impl<const N: u64> Q for [u8; N] {
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| ------------ ^ ^^^^^^^
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| |
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| unsatisfied trait bound introduced here
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error[E0308]: mismatched types
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--> $DIR/bad-subst-const-kind.rs:8:31
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@ -14,5 +20,4 @@ LL | impl<const N: u64> Q for [u8; N] {
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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For more information about this error, try `rustc --explain E0308`.
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@ -3,7 +3,9 @@
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struct Foo<const N: u32 = 2>;
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impl<const N: u32> Foo<N> {
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fn foo() -> Self { loop {} }
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fn foo() -> Self {
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loop {}
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}
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}
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fn main() {
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@ -1,5 +1,5 @@
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error[E0282]: type annotations needed for `Foo<_>`
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--> $DIR/doesnt_infer.rs:11:9
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--> $DIR/doesnt_infer.rs:13:9
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|
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LL | let foo = Foo::foo();
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| ^^^
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@ -4,5 +4,5 @@ use std::simd::Mask;
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fn main() {
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let y = Mask::<_, _>::splat(false);
|
||||
//~^ ERROR: type annotations needed for
|
||||
//~^ ERROR: type annotations needed
|
||||
}
|
||||
|
||||
@ -1,27 +0,0 @@
|
||||
// issue: rust-lang/rust#125520
|
||||
#![feature(generic_const_exprs)]
|
||||
//~^ WARN the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
|
||||
|
||||
struct Outer<const A: i64, const B: i64>();
|
||||
impl<const A: usize, const B: usize> Outer<A, B>
|
||||
//~^ ERROR the constant `A` is not of type `i64`
|
||||
//~| ERROR the constant `B` is not of type `i64`
|
||||
//~| ERROR mismatched types
|
||||
//~| ERROR mismatched types
|
||||
where
|
||||
[(); A + (B * 2)]:,
|
||||
{
|
||||
fn i() -> Self {
|
||||
//~^ ERROR the constant `A` is not of type `i64`
|
||||
//~| ERROR the constant `B` is not of type `i64`
|
||||
Self
|
||||
//~^ ERROR mismatched types
|
||||
//~| ERROR the constant `A` is not of type `i64`
|
||||
//~| ERROR the constant `B` is not of type `i64`
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
Outer::<1, 1>::o();
|
||||
//~^ ERROR no function or associated item named `o` found for struct `Outer` in the current scope
|
||||
}
|
||||
@ -1,125 +0,0 @@
|
||||
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:2:12
|
||||
|
|
||||
LL | #![feature(generic_const_exprs)]
|
||||
| ^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
|
||||
= note: `#[warn(incomplete_features)]` on by default
|
||||
|
||||
error: the constant `A` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:6:38
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^^^^^^^^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:14
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error: the constant `B` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:6:38
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^^^^^^^^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:28
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error: the constant `A` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:14:15
|
||||
|
|
||||
LL | fn i() -> Self {
|
||||
| ^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:14
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error: the constant `B` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:14:15
|
||||
|
|
||||
LL | fn i() -> Self {
|
||||
| ^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:28
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:17:9
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ---------------------------------------- `Outer` defines a struct constructor here, which should be called
|
||||
...
|
||||
LL | fn i() -> Self {
|
||||
| ---- expected `Outer<A, B>` because of return type
|
||||
...
|
||||
LL | Self
|
||||
| ^^^^ expected `Outer<A, B>`, found struct constructor
|
||||
|
|
||||
= note: expected struct `Outer<A, B>`
|
||||
found struct constructor `fn() -> Outer<A, B> {Outer::<A, B>}`
|
||||
help: use parentheses to construct this tuple struct
|
||||
|
|
||||
LL | Self()
|
||||
| ++
|
||||
|
||||
error: the constant `A` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:17:9
|
||||
|
|
||||
LL | Self
|
||||
| ^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:14
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error: the constant `B` is not of type `i64`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:17:9
|
||||
|
|
||||
LL | Self
|
||||
| ^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:5:28
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error[E0599]: no function or associated item named `o` found for struct `Outer` in the current scope
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:25:20
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: i64>();
|
||||
| ---------------------------------------- function or associated item `o` not found for this struct
|
||||
...
|
||||
LL | Outer::<1, 1>::o();
|
||||
| ^ function or associated item not found in `Outer<1, 1>`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:6:44
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^ expected `i64`, found `usize`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/ice-125520-layout-mismatch-mulwithoverflow.rs:6:47
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^ expected `i64`, found `usize`
|
||||
|
||||
error: aborting due to 10 previous errors; 1 warning emitted
|
||||
|
||||
Some errors have detailed explanations: E0308, E0599.
|
||||
For more information about an error, try `rustc --explain E0308`.
|
||||
@ -10,7 +10,7 @@ impl<const N: u64> Q for [u8; N] {}
|
||||
//~| ERROR mismatched types
|
||||
|
||||
pub fn q_user() -> [u8; <[u8; 13] as Q>::ASSOC] {}
|
||||
//~^ ERROR `[u8; 13]: Q` is not satisfied
|
||||
//~^ ERROR the constant `13` is not of type `u64`
|
||||
//~| ERROR mismatched types
|
||||
|
||||
pub fn main() {}
|
||||
|
||||
@ -7,13 +7,19 @@ LL | const ASSOC: usize;
|
||||
LL | impl<const N: u64> Q for [u8; N] {}
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `ASSOC` in implementation
|
||||
|
||||
error[E0277]: the trait bound `[u8; 13]: Q` is not satisfied
|
||||
error: the constant `13` is not of type `u64`
|
||||
--> $DIR/type_mismatch.rs:12:26
|
||||
|
|
||||
LL | pub fn q_user() -> [u8; <[u8; 13] as Q>::ASSOC] {}
|
||||
| ^^^^^^^^ the trait `Q` is not implemented for `[u8; 13]`
|
||||
| ^^^^^^^^ expected `u64`, found `usize`
|
||||
|
|
||||
= help: the trait `Q` is implemented for `[u8; N]`
|
||||
note: required for `[u8; 13]` to implement `Q`
|
||||
--> $DIR/type_mismatch.rs:8:20
|
||||
|
|
||||
LL | impl<const N: u64> Q for [u8; N] {}
|
||||
| ------------ ^ ^^^^^^^
|
||||
| |
|
||||
| unsatisfied trait bound introduced here
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/type_mismatch.rs:12:20
|
||||
@ -31,5 +37,5 @@ LL | impl<const N: u64> Q for [u8; N] {}
|
||||
|
||||
error: aborting due to 4 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0046, E0277, E0308.
|
||||
Some errors have detailed explanations: E0046, E0308.
|
||||
For more information about an error, try `rustc --explain E0046`.
|
||||
|
||||
@ -1,10 +1,7 @@
|
||||
//@ failure-status: 101
|
||||
//@ known-bug: rust-lang/rust#125451
|
||||
//@ normalize-stderr-test "note: .*\n\n" -> ""
|
||||
//@ normalize-stderr-test "thread 'rustc' panicked.*\n.*\n" -> ""
|
||||
//@ normalize-stderr-test "(error: internal compiler error: [^:]+):\d+:\d+: " -> "$1:LL:CC: "
|
||||
//@ normalize-stderr-test "delayed at .*" -> ""
|
||||
//@ rustc-env:RUST_BACKTRACE=0
|
||||
//@ check-pass
|
||||
// If this test starts failing because it ICEs due to not being able to convert a `ReErased` to
|
||||
// something then feel free to just convert this to a known-bug. I'm pretty sure this is still
|
||||
// a failing test, we just started masking the bug.
|
||||
|
||||
#![allow(incomplete_features)]
|
||||
#![feature(adt_const_params, generic_const_exprs)]
|
||||
|
||||
@ -1,8 +0,0 @@
|
||||
error: internal compiler error: compiler/rustc_borrowck/src/universal_regions.rs:LL:CC: cannot convert `'{erased}` to a region vid
|
||||
|
||||
query stack during panic:
|
||||
#0 [mir_borrowck] borrow-checking `<impl at $DIR/issue-105821.rs:21:1: 23:24>::R`
|
||||
#1 [analysis] running analysis passes on this crate
|
||||
end of query stack
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
@ -1,34 +0,0 @@
|
||||
error: the constant `A` is not of type `i64`
|
||||
--> $DIR/eval_type_mismatch.rs:5:38
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^^^^^^^^^^^ expected `i64`, found `usize`
|
||||
|
|
||||
note: required by a bound in `Outer`
|
||||
--> $DIR/eval_type_mismatch.rs:4:14
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: usize>();
|
||||
| ^^^^^^^^^^^^ required by this bound in `Outer`
|
||||
|
||||
error[E0599]: no function or associated item named `o` found for struct `Outer<1, 1>` in the current scope
|
||||
--> $DIR/eval_type_mismatch.rs:15:20
|
||||
|
|
||||
LL | struct Outer<const A: i64, const B: usize>();
|
||||
| ------------------------------------------ function or associated item `o` not found for this struct
|
||||
...
|
||||
LL | Outer::<1, 1>::o();
|
||||
| ^ function or associated item not found in `Outer<1, 1>`
|
||||
|
|
||||
= note: the function or associated item was found for
|
||||
- `Outer<A, B>`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/eval_type_mismatch.rs:5:44
|
||||
|
|
||||
LL | impl<const A: usize, const B: usize> Outer<A, B>
|
||||
| ^ expected `i64`, found `usize`
|
||||
|
||||
error: aborting due to 3 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0308, E0599.
|
||||
For more information about an error, try `rustc --explain E0308`.
|
||||
@ -6,5 +6,5 @@ fn foo<const N: usize>(_: impl std::fmt::Display) -> [usize; N] {
|
||||
|
||||
fn main() {
|
||||
let _ = foo("foo");
|
||||
//~^ ERROR type annotations needed for `[usize; _]`
|
||||
//~^ ERROR type annotations needed
|
||||
}
|
||||
|
||||
@ -7,8 +7,7 @@ struct S<const L: usize>;
|
||||
|
||||
impl<const N: i32> Copy for S<N> {}
|
||||
//~^ ERROR: mismatched types
|
||||
//~| ERROR: the trait bound `S<N>: Clone` is not satisfied
|
||||
//~| 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<_>`
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -1,29 +1,11 @@
|
||||
error[E0277]: the trait bound `S<N>: Clone` is not satisfied
|
||||
--> $DIR/bad-const-wf-doesnt-specialize.rs:8:29
|
||||
error[E0119]: conflicting implementations of trait `Copy` for type `S<_>`
|
||||
--> $DIR/bad-const-wf-doesnt-specialize.rs:10:1
|
||||
|
|
||||
LL | impl<const N: i32> Copy for S<N> {}
|
||||
| ^^^^ the trait `Clone` is not implemented for `S<N>`
|
||||
|
|
||||
= help: the trait `Clone` is implemented for `S<L>`
|
||||
note: required by a bound in `Copy`
|
||||
--> $SRC_DIR/core/src/marker.rs:LL:COL
|
||||
help: consider annotating `S<N>` with `#[derive(Clone)]`
|
||||
|
|
||||
LL + #[derive(Clone)]
|
||||
LL | struct S<const L: usize>;
|
||||
|
|
||||
|
||||
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 by a bound in `S`
|
||||
--> $DIR/bad-const-wf-doesnt-specialize.rs:6:10
|
||||
|
|
||||
LL | struct S<const L: usize>;
|
||||
| ^^^^^^^^^^^^^^ required by this bound in `S`
|
||||
| -------------------------------- first implementation here
|
||||
LL |
|
||||
LL | impl<const M: usize> Copy for S<M> {}
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `S<_>`
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/bad-const-wf-doesnt-specialize.rs:8:31
|
||||
@ -31,7 +13,7 @@ error[E0308]: mismatched types
|
||||
LL | impl<const N: i32> Copy for S<N> {}
|
||||
| ^ expected `usize`, found `i32`
|
||||
|
||||
error: aborting due to 3 previous errors
|
||||
error: aborting due to 2 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0277, E0308.
|
||||
For more information about an error, try `rustc --explain E0277`.
|
||||
Some errors have detailed explanations: E0119, E0308.
|
||||
For more information about an error, try `rustc --explain E0119`.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user