bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Bubble up obligations

Browse source
This commit is contained in:
ouz-a 2022-07-25 15:45:36 +03:00
parent 64dc377a10
commit 4a0473c0f5
3 changed files with 13 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_traits/src/evaluate_obligation.rs
View file

@ -1,4 +1,4 @@
use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::infer::{DefiningAnchor, TyCtxtInferExt};
use rustc_middle::ty::query::Providers; use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{ParamEnvAnd, TyCtxt}; use rustc_middle::ty::{ParamEnvAnd, TyCtxt};
use rustc_span::source_map::DUMMY_SP; use rustc_span::source_map::DUMMY_SP;
@ -16,7 +16,7 @@ fn evaluate_obligation<'tcx>(
canonical_goal: CanonicalPredicateGoal<'tcx>, canonical_goal: CanonicalPredicateGoal<'tcx>,
) -> Result<EvaluationResult, OverflowError> { ) -> Result<EvaluationResult, OverflowError> {
debug!("evaluate_obligation(canonical_goal={:#?})", canonical_goal); debug!("evaluate_obligation(canonical_goal={:#?})", canonical_goal);
tcx.infer_ctxt().enter_with_canonical( tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::Bubble).enter_with_canonical(
DUMMY_SP, DUMMY_SP,
&canonical_goal, &canonical_goal,
|ref infcx, goal, _canonical_inference_vars| { |ref infcx, goal, _canonical_inference_vars| {

9
compiler/rustc_traits/src/type_op.rs
View file

@ -2,7 +2,7 @@ use rustc_hir as hir;
use rustc_hir::def_id::DefId; use rustc_hir::def_id::DefId;
use rustc_infer::infer::at::ToTrace; use rustc_infer::infer::at::ToTrace;
use rustc_infer::infer::canonical::{Canonical, QueryResponse}; use rustc_infer::infer::canonical::{Canonical, QueryResponse};
use rustc_infer::infer::{InferCtxt, TyCtxtInferExt}; use rustc_infer::infer::{DefiningAnchor, InferCtxt, TyCtxtInferExt};
use rustc_infer::traits::TraitEngineExt as _; use rustc_infer::traits::TraitEngineExt as _;
use rustc_middle::ty::query::Providers; use rustc_middle::ty::query::Providers;
use rustc_middle::ty::subst::{GenericArg, Subst, UserSelfTy, UserSubsts}; use rustc_middle::ty::subst::{GenericArg, Subst, UserSelfTy, UserSubsts};
@ -258,10 +258,13 @@ fn type_op_prove_predicate<'tcx>(
tcx: TyCtxt<'tcx>, tcx: TyCtxt<'tcx>,
canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, ProvePredicate<'tcx>>>, canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, ProvePredicate<'tcx>>>,
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution> { ) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, ()>>, NoSolution> {
tcx.infer_ctxt().enter_canonical_trait_query(&canonicalized, |infcx, fulfill_cx, key| { tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::Bubble).enter_canonical_trait_query(
&canonicalized,
|infcx, fulfill_cx, key| {
type_op_prove_predicate_with_cause(infcx, fulfill_cx, key, ObligationCause::dummy()); type_op_prove_predicate_with_cause(infcx, fulfill_cx, key, ObligationCause::dummy());
Ok(()) Ok(())
}) },
)
} }
/// The core of the `type_op_prove_predicate` query: for diagnostics purposes in NLL HRTB errors, /// The core of the `type_op_prove_predicate` query: for diagnostics purposes in NLL HRTB errors,

4
src/test/ui/type-alias-impl-trait/issue-53398-cyclic-types.stderr
View file

@ -1,8 +1,10 @@
error[E0275]: overflow evaluating the requirement `<fn() -> Foo {foo} as FnOnce<()>>::Output == fn() -> Foo {foo}` error[E0275]: overflow evaluating the requirement `fn() -> Foo {foo}: Sized`
--> $DIR/issue-53398-cyclic-types.rs:5:13 --> $DIR/issue-53398-cyclic-types.rs:5:13
| |
LL | fn foo() -> Foo { LL | fn foo() -> Foo {
| ^^^ | ^^^
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_53398_cyclic_types`)
error: aborting due to previous error error: aborting due to previous error