Auto merge of #127261 - jhpratt:rollup-cpoayvr, r=jhpratt
Rollup of 8 pull requests Successful merges: - #123588 (Stabilize `hint::assert_unchecked`) - #126403 (Actually report normalization-based type errors correctly for alias-relate obligations in new solver) - #126917 (Disable rmake test `inaccessible-temp-dir` on riscv64) - #127115 (unreferenced-used-static: run test everywhere) - #127204 (Stabilize atomic_bool_fetch_not) - #127239 (remove unnecessary ignore-endian-big from stack-overflow-trait-infer …) - #127245 (Add a test for `generic_const_exprs`) - #127246 (Give remote-test-client a longer timeout) r? `@ghost` `@rustbot` modify labels: rollup
This commit is contained in:
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commit
2db4ff40af
@ -1586,16 +1586,15 @@ fn report_projection_error(
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}
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self.probe(|_| {
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let ocx = ObligationCtxt::new(self);
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// try to find the mismatched types to report the error with.
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//
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// this can fail if the problem was higher-ranked, in which
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// cause I have no idea for a good error message.
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let bound_predicate = predicate.kind();
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let (values, err) = if let ty::PredicateKind::Clause(ty::ClauseKind::Projection(data)) =
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bound_predicate.skip_binder()
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{
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let (values, err) = match bound_predicate.skip_binder() {
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ty::PredicateKind::Clause(ty::ClauseKind::Projection(data)) => {
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let ocx = ObligationCtxt::new(self);
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let data = self.instantiate_binder_with_fresh_vars(
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obligation.cause.span,
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infer::BoundRegionConversionTime::HigherRankedType,
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@ -1607,15 +1606,11 @@ fn report_projection_error(
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let normalized_term =
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ocx.normalize(&obligation.cause, obligation.param_env, unnormalized_term);
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debug!(?obligation.cause, ?obligation.param_env);
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debug!(?normalized_term, data.ty = ?data.term);
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let is_normalized_term_expected = !matches!(
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obligation.cause.code().peel_derives(),
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|ObligationCauseCode::WhereClause(..)| ObligationCauseCode::WhereClauseInExpr(
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..
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) | ObligationCauseCode::Coercion { .. }
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ObligationCauseCode::WhereClause(..)
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| ObligationCauseCode::WhereClauseInExpr(..)
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| ObligationCauseCode::Coercion { .. }
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);
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let (expected, actual) = if is_normalized_term_expected {
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@ -1634,12 +1629,70 @@ fn report_projection_error(
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if let Err(new_err) =
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ocx.eq(&obligation.cause, obligation.param_env, expected, actual)
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{
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(Some((data, is_normalized_term_expected, normalized_term, data.term)), new_err)
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(
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Some((
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data.projection_term,
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is_normalized_term_expected,
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self.resolve_vars_if_possible(normalized_term),
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data.term,
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)),
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new_err,
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)
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} else {
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(None, error.err)
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}
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}
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ty::PredicateKind::AliasRelate(lhs, rhs, _) => {
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let derive_better_type_error =
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|alias_term: ty::AliasTerm<'tcx>, expected_term: ty::Term<'tcx>| {
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let ocx = ObligationCtxt::new(self);
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let normalized_term = match expected_term.unpack() {
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ty::TermKind::Ty(_) => self.next_ty_var(DUMMY_SP).into(),
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ty::TermKind::Const(_) => self.next_const_var(DUMMY_SP).into(),
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};
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ocx.register_obligation(Obligation::new(
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self.tcx,
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ObligationCause::dummy(),
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obligation.param_env,
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ty::PredicateKind::NormalizesTo(ty::NormalizesTo {
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alias: alias_term,
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term: normalized_term,
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}),
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));
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let _ = ocx.select_where_possible();
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if let Err(terr) = ocx.eq(
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&ObligationCause::dummy(),
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obligation.param_env,
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expected_term,
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normalized_term,
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) {
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Some((terr, self.resolve_vars_if_possible(normalized_term)))
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} else {
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None
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}
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};
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if let Some(lhs) = lhs.to_alias_term()
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&& let Some((better_type_err, expected_term)) =
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derive_better_type_error(lhs, rhs)
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{
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(
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Some((lhs, true, self.resolve_vars_if_possible(expected_term), rhs)),
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better_type_err,
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)
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} else if let Some(rhs) = rhs.to_alias_term()
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&& let Some((better_type_err, expected_term)) =
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derive_better_type_error(rhs, lhs)
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{
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(
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Some((rhs, true, self.resolve_vars_if_possible(expected_term), lhs)),
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better_type_err,
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)
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} else {
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(None, error.err)
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}
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}
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_ => (None, error.err),
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};
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let msg = values
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@ -1737,15 +1790,15 @@ fn report_projection_error(
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fn maybe_detailed_projection_msg(
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&self,
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pred: ty::ProjectionPredicate<'tcx>,
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projection_term: ty::AliasTerm<'tcx>,
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normalized_ty: ty::Term<'tcx>,
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expected_ty: ty::Term<'tcx>,
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) -> Option<String> {
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let trait_def_id = pred.projection_term.trait_def_id(self.tcx);
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let self_ty = pred.projection_term.self_ty();
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let trait_def_id = projection_term.trait_def_id(self.tcx);
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let self_ty = projection_term.self_ty();
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with_forced_trimmed_paths! {
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if self.tcx.is_lang_item(pred.projection_term.def_id,LangItem::FnOnceOutput) {
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if self.tcx.is_lang_item(projection_term.def_id, LangItem::FnOnceOutput) {
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let fn_kind = self_ty.prefix_string(self.tcx);
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let item = match self_ty.kind() {
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ty::FnDef(def, _) => self.tcx.item_name(*def).to_string(),
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@ -127,7 +127,6 @@
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#![feature(fmt_internals)]
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#![feature(fn_traits)]
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#![feature(hasher_prefixfree_extras)]
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#![feature(hint_assert_unchecked)]
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#![feature(inplace_iteration)]
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#![feature(iter_advance_by)]
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#![feature(iter_next_chunk)]
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@ -111,41 +111,92 @@
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/// Makes a *soundness* promise to the compiler that `cond` holds.
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///
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/// This may allow the optimizer to simplify things,
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/// but it might also make the generated code slower.
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/// Either way, calling it will most likely make compilation take longer.
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/// This may allow the optimizer to simplify things, but it might also make the generated code
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/// slower. Either way, calling it will most likely make compilation take longer.
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///
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/// This is a situational tool for micro-optimization, and is allowed to do nothing.
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/// Any use should come with a repeatable benchmark to show the value
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/// and allow removing it later should the optimizer get smarter and no longer need it.
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/// You may know this from other places as
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/// [`llvm.assume`](https://llvm.org/docs/LangRef.html#llvm-assume-intrinsic) or, in C,
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/// [`__builtin_assume`](https://clang.llvm.org/docs/LanguageExtensions.html#builtin-assume).
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///
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/// The more complicated the condition the less likely this is to be fruitful.
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/// For example, `assert_unchecked(foo.is_sorted())` is a complex enough value
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/// that the compiler is unlikely to be able to take advantage of it.
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/// This promotes a correctness requirement to a soundness requirement. Don't do that without
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/// very good reason.
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///
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/// There's also no need to `assert_unchecked` basic properties of things. For
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/// example, the compiler already knows the range of `count_ones`, so there's no
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/// benefit to `let n = u32::count_ones(x); assert_unchecked(n <= u32::BITS);`.
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/// # Usage
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///
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/// If ever you're tempted to write `assert_unchecked(false)`, then you're
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/// actually looking for [`unreachable_unchecked()`].
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/// This is a situational tool for micro-optimization, and is allowed to do nothing. Any use
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/// should come with a repeatable benchmark to show the value, with the expectation to drop it
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/// later should the optimizer get smarter and no longer need it.
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///
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/// You may know this from other places
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/// as [`llvm.assume`](https://llvm.org/docs/LangRef.html#llvm-assume-intrinsic)
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/// or [`__builtin_assume`](https://clang.llvm.org/docs/LanguageExtensions.html#builtin-assume).
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/// The more complicated the condition, the less likely this is to be useful. For example,
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/// `assert_unchecked(foo.is_sorted())` is a complex enough value that the compiler is unlikely
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/// to be able to take advantage of it.
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///
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/// This promotes a correctness requirement to a soundness requirement.
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/// Don't do that without very good reason.
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/// There's also no need to `assert_unchecked` basic properties of things. For example, the
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/// compiler already knows the range of `count_ones`, so there is no benefit to
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/// `let n = u32::count_ones(x); assert_unchecked(n <= u32::BITS);`.
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///
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/// `assert_unchecked` is logically equivalent to `if !cond { unreachable_unchecked(); }`. If
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/// ever you are tempted to write `assert_unchecked(false)`, you should instead use
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/// [`unreachable_unchecked()`] directly.
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///
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/// # Safety
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///
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/// `cond` must be `true`. It's immediate UB to call this with `false`.
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/// `cond` must be `true`. It is immediate UB to call this with `false`.
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///
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/// # Example
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///
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/// ```
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/// use core::hint;
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///
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/// /// # Safety
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/// ///
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/// /// `p` must be nonnull and valid
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/// pub unsafe fn next_value(p: *const i32) -> i32 {
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/// // SAFETY: caller invariants guarantee that `p` is not null
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/// unsafe { hint::assert_unchecked(!p.is_null()) }
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///
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/// if p.is_null() {
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/// return -1;
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/// } else {
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/// // SAFETY: caller invariants guarantee that `p` is valid
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/// unsafe { *p + 1 }
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/// }
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/// }
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/// ```
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///
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/// Without the `assert_unchecked`, the above function produces the following with optimizations
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/// enabled:
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///
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/// ```asm
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/// next_value:
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/// test rdi, rdi
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/// je .LBB0_1
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/// mov eax, dword ptr [rdi]
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/// inc eax
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/// ret
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/// .LBB0_1:
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/// mov eax, -1
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/// ret
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/// ```
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///
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/// Adding the assertion allows the optimizer to remove the extra check:
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///
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/// ```asm
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/// next_value:
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/// mov eax, dword ptr [rdi]
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/// inc eax
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/// ret
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/// ```
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///
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/// This example is quite unlike anything that would be used in the real world: it is redundant
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/// to put an an assertion right next to code that checks the same thing, and dereferencing a
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/// pointer already has the builtin assumption that it is nonnull. However, it illustrates the
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/// kind of changes the optimizer can make even when the behavior is less obviously related.
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#[track_caller]
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#[inline(always)]
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#[doc(alias = "assume")]
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#[track_caller]
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#[unstable(feature = "hint_assert_unchecked", issue = "119131")]
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#[rustc_const_unstable(feature = "const_hint_assert_unchecked", issue = "119131")]
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#[stable(feature = "hint_assert_unchecked", since = "CURRENT_RUSTC_VERSION")]
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#[rustc_const_stable(feature = "hint_assert_unchecked", since = "CURRENT_RUSTC_VERSION")]
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pub const unsafe fn assert_unchecked(cond: bool) {
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// SAFETY: The caller promised `cond` is true.
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unsafe {
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@ -959,7 +959,7 @@ pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
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/// not be used if the invariant can be discovered by the optimizer on its
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/// own, or if it does not enable any significant optimizations.
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///
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/// This intrinsic does not have a stable counterpart.
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/// The stabilized version of this intrinsic is [`core::hint::assert_unchecked`].
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#[rustc_const_stable(feature = "const_assume", since = "1.77.0")]
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#[rustc_nounwind]
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#[unstable(feature = "core_intrinsics", issue = "none")]
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@ -127,7 +127,6 @@
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#![feature(const_fmt_arguments_new)]
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#![feature(const_hash)]
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#![feature(const_heap)]
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#![feature(const_hint_assert_unchecked)]
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#![feature(const_index_range_slice_index)]
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#![feature(const_int_from_str)]
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#![feature(const_intrinsic_copy)]
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@ -1069,7 +1069,6 @@ pub fn fetch_xor(&self, val: bool, order: Ordering) -> bool {
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/// # Examples
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///
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/// ```
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/// #![feature(atomic_bool_fetch_not)]
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/// use std::sync::atomic::{AtomicBool, Ordering};
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///
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/// let foo = AtomicBool::new(true);
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@ -1081,7 +1080,7 @@ pub fn fetch_xor(&self, val: bool, order: Ordering) -> bool {
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/// assert_eq!(foo.load(Ordering::SeqCst), true);
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/// ```
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#[inline]
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#[unstable(feature = "atomic_bool_fetch_not", issue = "98485")]
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#[stable(feature = "atomic_bool_fetch_not", since = "CURRENT_RUSTC_VERSION")]
|
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#[cfg(target_has_atomic = "8")]
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#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
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pub fn fetch_not(&self, order: Ordering) -> bool {
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@ -334,7 +334,6 @@
|
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#![feature(fmt_internals)]
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||||
#![feature(hasher_prefixfree_extras)]
|
||||
#![feature(hashmap_internals)]
|
||||
#![feature(hint_assert_unchecked)]
|
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#![feature(ip)]
|
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#![feature(maybe_uninit_slice)]
|
||||
#![feature(maybe_uninit_write_slice)]
|
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|
||||
@ -71,7 +71,7 @@ fn spawn_emulator(target: &str, server: &Path, tmpdir: &Path, rootfs: Option<Pat
|
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|
||||
// Wait for the emulator to come online
|
||||
loop {
|
||||
let dur = Duration::from_millis(100);
|
||||
let dur = Duration::from_millis(2000);
|
||||
if let Ok(mut client) = TcpStream::connect(&device_address) {
|
||||
t!(client.set_read_timeout(Some(dur)));
|
||||
t!(client.set_write_timeout(Some(dur)));
|
||||
|
||||
@ -13,13 +13,18 @@
|
||||
// use a directory with non-existing parent like `/does-not-exist/output`.
|
||||
// See https://github.com/rust-lang/rust/issues/66530
|
||||
|
||||
//@ ignore-riscv64
|
||||
// FIXME: The riscv build container runs as root, and can always write
|
||||
// into `inaccessible/tmp`. Ideally, the riscv64-gnu docker container
|
||||
// would use a non-root user, but this leads to issues with
|
||||
// `mkfs.ext4 -d`, as well as mounting a loop device for the rootfs.
|
||||
//@ ignore-arm
|
||||
// Reason: linker error on `armhf-gnu`
|
||||
//@ ignore-windows
|
||||
// Reason: `set_readonly` has no effect on directories
|
||||
// and does not prevent modification.
|
||||
|
||||
use run_make_support::{fs_wrapper, rustc, target, test_while_readonly};
|
||||
use run_make_support::{fs_wrapper, rustc, test_while_readonly};
|
||||
|
||||
fn main() {
|
||||
// Create an inaccessible directory.
|
||||
@ -28,7 +33,6 @@ fn main() {
|
||||
// Run rustc with `-Z temps-dir` set to a directory *inside* the inaccessible one,
|
||||
// so that it can't create `tmp`.
|
||||
rustc()
|
||||
.target(target())
|
||||
.input("program.rs")
|
||||
.arg("-Ztemps-dir=inaccessible/tmp")
|
||||
.run_fail()
|
||||
|
||||
14
tests/ui/const-generics/generic_const_exprs/adt_wf_hang.rs
Normal file
14
tests/ui/const-generics/generic_const_exprs/adt_wf_hang.rs
Normal file
@ -0,0 +1,14 @@
|
||||
#![feature(generic_const_exprs)]
|
||||
#![feature(adt_const_params)]
|
||||
#![allow(incomplete_features)]
|
||||
#![allow(dead_code)]
|
||||
|
||||
#[derive(PartialEq, Eq)]
|
||||
struct U;
|
||||
|
||||
struct S<const N: U>()
|
||||
where
|
||||
S<{ U }>:;
|
||||
//~^ ERROR: overflow evaluating the requirement `S<{ U }> well-formed`
|
||||
|
||||
fn main() {}
|
||||
@ -0,0 +1,18 @@
|
||||
error[E0275]: overflow evaluating the requirement `S<{ U }> well-formed`
|
||||
--> $DIR/adt_wf_hang.rs:11:5
|
||||
|
|
||||
LL | S<{ U }>:;
|
||||
| ^^^^^^^^
|
||||
|
|
||||
note: required by a bound in `S`
|
||||
--> $DIR/adt_wf_hang.rs:11:5
|
||||
|
|
||||
LL | struct S<const N: U>()
|
||||
| - required by a bound in this struct
|
||||
LL | where
|
||||
LL | S<{ U }>:;
|
||||
| ^^^^^^^^ required by this bound in `S`
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
For more information about this error, try `rustc --explain E0275`.
|
||||
@ -1,10 +1,6 @@
|
||||
#![feature(hint_assert_unchecked)]
|
||||
#![feature(const_hint_assert_unchecked)]
|
||||
|
||||
const _: () = unsafe {
|
||||
let n = u32::MAX.count_ones();
|
||||
std::hint::assert_unchecked(n < 32); //~ ERROR evaluation of constant value failed
|
||||
};
|
||||
|
||||
fn main() {
|
||||
}
|
||||
fn main() {}
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
error[E0080]: evaluation of constant value failed
|
||||
--> $DIR/const-assert-unchecked-ub.rs:6:5
|
||||
--> $DIR/const-assert-unchecked-ub.rs:3:5
|
||||
|
|
||||
LL | std::hint::assert_unchecked(n < 32);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `assume` called with `false`
|
||||
|
||||
@ -29,7 +29,10 @@ error[E0271]: type mismatch resolving `<SelectInt as Expression>::SqlType == Tex
|
||||
--> $DIR/as_expression.rs:57:5
|
||||
|
|
||||
LL | SelectInt.check("bar");
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^ expected `Integer`, found `Text`
|
||||
|
|
||||
= note: expected struct `Integer`
|
||||
found struct `Text`
|
||||
|
||||
error: aborting due to 3 previous errors
|
||||
|
||||
|
||||
@ -1,9 +1,10 @@
|
||||
// This is a non-regression test for issue #127052 where unreferenced `#[used]` statics couldn't be
|
||||
// removed by the MSVC linker, causing linking errors.
|
||||
// This is a non-regression test for issue #127052 where unreferenced `#[used]` statics in the
|
||||
// binary crate would be marked as "exported", but not be present in the binary, causing linking
|
||||
// errors with the MSVC linker.
|
||||
|
||||
//@ build-pass: needs linking
|
||||
//@ only-msvc
|
||||
|
||||
#[used]
|
||||
static FOO: u32 = 0;
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -2,7 +2,10 @@ error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Inde
|
||||
--> $DIR/issue-100222.rs:34:12
|
||||
|
|
||||
LL | fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
|
||||
| ^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
|
||||
|
|
||||
= note: expected unit type `()`
|
||||
found mutable reference `&mut <() as Index>::Output`
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
|
||||
@ -2,7 +2,10 @@ error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Inde
|
||||
--> $DIR/issue-100222.rs:25:12
|
||||
|
|
||||
LL | fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
|
||||
| ^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
|
||||
|
|
||||
= note: expected unit type `()`
|
||||
found mutable reference `&mut <() as Index>::Output`
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
|
||||
@ -2,7 +2,10 @@ error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Inde
|
||||
--> $DIR/issue-100222.rs:34:12
|
||||
|
|
||||
LL | fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
|
||||
| ^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
|
||||
|
|
||||
= note: expected unit type `()`
|
||||
found mutable reference `&mut <() as Index>::Output`
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
|
||||
@ -2,7 +2,10 @@ error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Inde
|
||||
--> $DIR/issue-100222.rs:25:12
|
||||
|
|
||||
LL | fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
|
||||
| ^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
|
||||
|
|
||||
= note: expected unit type `()`
|
||||
found mutable reference `&mut <() as Index>::Output`
|
||||
|
||||
error: aborting due to 1 previous error
|
||||
|
||||
|
||||
@ -3,14 +3,14 @@ error[E0391]: cycle detected when computing layout of `Foo`
|
||||
= note: ...which requires computing layout of `<&'static Foo as core::ops::deref::Deref>::Target`...
|
||||
= note: ...which again requires computing layout of `Foo`, completing the cycle
|
||||
note: cycle used when const-evaluating + checking `_`
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:15:1
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:14:1
|
||||
|
|
||||
LL | const _: *const Foo = 0 as _;
|
||||
| ^^^^^^^^^^^^^^^^^^^
|
||||
= 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
|
||||
|
||||
error[E0080]: evaluation of constant value failed
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:15:1
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:14:1
|
||||
|
|
||||
LL | const _: *const Foo = 0 as _;
|
||||
| ^^^^^^^^^^^^^^^^^^^ a cycle occurred during layout computation
|
||||
|
||||
@ -3,14 +3,14 @@ error[E0391]: cycle detected when computing layout of `Foo`
|
||||
= note: ...which requires computing layout of `<&'static Foo as core::ops::deref::Deref>::Target`...
|
||||
= note: ...which again requires computing layout of `Foo`, completing the cycle
|
||||
note: cycle used when const-evaluating + checking `_`
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:15:1
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:14:1
|
||||
|
|
||||
LL | const _: *const Foo = 0 as _;
|
||||
| ^^^^^^^^^^^^^^^^^^^
|
||||
= 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
|
||||
|
||||
error[E0080]: evaluation of constant value failed
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:15:1
|
||||
--> $DIR/stack-overflow-trait-infer-98842.rs:14:1
|
||||
|
|
||||
LL | const _: *const Foo = 0 as _;
|
||||
| ^^^^^^^^^^^^^^^^^^^ a cycle occurred during layout computation
|
||||
|
||||
@ -3,8 +3,7 @@
|
||||
//@ check-fail
|
||||
//@ edition:2021
|
||||
//@ stderr-per-bitwidth
|
||||
//@ ignore-endian-big
|
||||
//~^^^^^^ ERROR cycle detected when computing layout of `Foo`
|
||||
//~^^^^^ ERROR cycle detected when computing layout of `Foo`
|
||||
|
||||
// If the inner `Foo` is named through an associated type,
|
||||
// the "infinite size" error does not occur.
|
||||
|
||||
@ -1,11 +1,13 @@
|
||||
error[E0271]: type mismatch resolving `<{async block@$DIR/async.rs:12:17: 12:22} as Future>::Output == i32`
|
||||
error[E0271]: expected `{async block@$DIR/async.rs:12:17: 12:22}` to be a future that resolves to `i32`, but it resolves to `()`
|
||||
--> $DIR/async.rs:12:17
|
||||
|
|
||||
LL | needs_async(async {});
|
||||
| ----------- ^^^^^^^^ types differ
|
||||
| ----------- ^^^^^^^^ expected `()`, found `i32`
|
||||
| |
|
||||
| required by a bound introduced by this call
|
||||
|
|
||||
= note: expected unit type `()`
|
||||
found type `i32`
|
||||
note: required by a bound in `needs_async`
|
||||
--> $DIR/async.rs:8:31
|
||||
|
|
||||
|
||||
@ -10,7 +10,7 @@ fn needs_async(_: impl Future<Output = i32>) {}
|
||||
#[cfg(fail)]
|
||||
fn main() {
|
||||
needs_async(async {});
|
||||
//[fail]~^ ERROR type mismatch
|
||||
//[fail]~^ ERROR expected `{async block@$DIR/async.rs:12:17: 12:22}` to be a future that resolves to `i32`, but it resolves to `()`
|
||||
}
|
||||
|
||||
#[cfg(pass)]
|
||||
|
||||
@ -1,9 +1,22 @@
|
||||
error[E0271]: type mismatch resolving `<dyn Trait<A = A, B = B> as SuperTrait>::A == B`
|
||||
--> $DIR/more-object-bound.rs:12:5
|
||||
|
|
||||
LL | fn transmute<A, B>(x: A) -> B {
|
||||
| - -
|
||||
| | |
|
||||
| | expected type parameter
|
||||
| | found type parameter
|
||||
| found type parameter
|
||||
| expected type parameter
|
||||
LL | foo::<A, B, dyn Trait<A = A, B = B>>(x)
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter `A`, found type parameter `B`
|
||||
|
|
||||
= note: expected type parameter `A`
|
||||
found type parameter `B`
|
||||
= note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
|
||||
= note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
|
||||
= note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
|
||||
= note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
|
||||
= note: required because it appears within the type `dyn Trait<A = A, B = B>`
|
||||
note: required by a bound in `foo`
|
||||
--> $DIR/more-object-bound.rs:18:8
|
||||
|
||||
Loading…
Reference in New Issue
Block a user