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Track bound vars

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This commit is contained in:
Jack Huey
2020-10-05 20:41:46 -04:00
parent 62a49c3bb8
commit 30187c81f6
33 changed files with 478 additions and 362 deletions
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14
compiler/rustc_middle/src/ty/mod.rs
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@@ -67,12 +67,12 @@ pub use self::sty::BoundRegionKind::*;
pub use self::sty::RegionKind::*;
pub use self::sty::TyKind::*;
pub use self::sty::{
Binder, BoundRegion, BoundRegionKind, BoundTy, BoundTyKind, BoundVar, CanonicalPolyFnSig,
ClosureSubsts, ClosureSubstsParts, ConstVid, EarlyBoundRegion, ExistentialPredicate,
ExistentialProjection, ExistentialTraitRef, FnSig, FreeRegion, GenSig, GeneratorSubsts,
GeneratorSubstsParts, ParamConst, ParamTy, PolyExistentialProjection, PolyExistentialTraitRef,
PolyFnSig, PolyGenSig, PolyTraitRef, ProjectionTy, Region, RegionKind, RegionVid, TraitRef,
TyKind, TypeAndMut, UpvarSubsts,
Binder, BoundRegion, BoundRegionKind, BoundTy, BoundTyKind, BoundVar, BoundVariableKind,
CanonicalPolyFnSig, ClosureSubsts, ClosureSubstsParts, ConstVid, EarlyBoundRegion,
ExistentialPredicate, ExistentialProjection, ExistentialTraitRef, FnSig, FreeRegion, GenSig,
GeneratorSubsts, GeneratorSubstsParts, ParamConst, ParamTy, PolyExistentialProjection,
PolyExistentialTraitRef, PolyFnSig, PolyGenSig, PolyTraitRef, ProjectionTy, Region, RegionKind,
RegionVid, TraitRef, TyKind, TypeAndMut, UpvarSubsts,
};
pub use self::trait_def::TraitDef;
@@ -546,7 +546,7 @@ impl<'tcx> Predicate<'tcx> {
let substs = trait_ref.skip_binder().substs;
let pred = self.kind().skip_binder();
let new = pred.subst(tcx, substs);
tcx.reuse_or_mk_predicate(self, ty::Binder::bind(new))
tcx.reuse_or_mk_predicate(self, ty::Binder::bind(new, tcx))
}
}