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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
commit | dc0db358abe19481e475e10c32149b53370f1a1c (patch) | |
tree | ab8ce99c4b255ce46f99ef402c27916055b899ee /compiler/rustc_infer/src/infer/higher_ranked | |
parent | Releasing progress-linux version 1.71.1+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-dc0db358abe19481e475e10c32149b53370f1a1c.tar.xz rustc-dc0db358abe19481e475e10c32149b53370f1a1c.zip |
Merging upstream version 1.72.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compiler/rustc_infer/src/infer/higher_ranked')
-rw-r--r-- | compiler/rustc_infer/src/infer/higher_ranked/mod.rs | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/compiler/rustc_infer/src/infer/higher_ranked/mod.rs b/compiler/rustc_infer/src/infer/higher_ranked/mod.rs index c304cd25c..510b1797d 100644 --- a/compiler/rustc_infer/src/infer/higher_ranked/mod.rs +++ b/compiler/rustc_infer/src/infer/higher_ranked/mod.rs @@ -6,7 +6,7 @@ use super::{HigherRankedType, InferCtxt}; use crate::infer::CombinedSnapshot; use rustc_middle::ty::fold::FnMutDelegate; use rustc_middle::ty::relate::{Relate, RelateResult, TypeRelation}; -use rustc_middle::ty::{self, Binder, TyCtxt, TypeFoldable}; +use rustc_middle::ty::{self, Binder, Ty, TyCtxt, TypeFoldable}; impl<'a, 'tcx> CombineFields<'a, 'tcx> { /// Checks whether `for<..> sub <: for<..> sup` holds. @@ -82,17 +82,20 @@ impl<'tcx> InferCtxt<'tcx> { let delegate = FnMutDelegate { regions: &mut |br: ty::BoundRegion| { - self.tcx - .mk_re_placeholder(ty::PlaceholderRegion { universe: next_universe, bound: br }) + ty::Region::new_placeholder( + self.tcx, + ty::PlaceholderRegion { universe: next_universe, bound: br }, + ) }, types: &mut |bound_ty: ty::BoundTy| { - self.tcx.mk_placeholder(ty::PlaceholderType { - universe: next_universe, - bound: bound_ty, - }) + Ty::new_placeholder( + self.tcx, + ty::PlaceholderType { universe: next_universe, bound: bound_ty }, + ) }, consts: &mut |bound_var: ty::BoundVar, ty| { - self.tcx.mk_const( + ty::Const::new_placeholder( + self.tcx, ty::PlaceholderConst { universe: next_universe, bound: bound_var }, ty, ) @@ -103,13 +106,15 @@ impl<'tcx> InferCtxt<'tcx> { self.tcx.replace_bound_vars_uncached(binder, delegate) } - /// See [RegionConstraintCollector::leak_check][1]. + /// See [RegionConstraintCollector::leak_check][1]. We only check placeholder + /// leaking into `outer_universe`, i.e. placeholders which cannot be named by that + /// universe. /// /// [1]: crate::infer::region_constraints::RegionConstraintCollector::leak_check pub fn leak_check( &self, - overly_polymorphic: bool, - snapshot: &CombinedSnapshot<'tcx>, + outer_universe: ty::UniverseIndex, + only_consider_snapshot: Option<&CombinedSnapshot<'tcx>>, ) -> RelateResult<'tcx, ()> { // If the user gave `-Zno-leak-check`, or we have been // configured to skip the leak check, then skip the leak check @@ -117,15 +122,15 @@ impl<'tcx> InferCtxt<'tcx> { // subtyping errors that it would have caught will now be // caught later on, during region checking. However, we // continue to use it for a transition period. - if self.tcx.sess.opts.unstable_opts.no_leak_check || self.skip_leak_check.get() { + if self.tcx.sess.opts.unstable_opts.no_leak_check || self.skip_leak_check { return Ok(()); } self.inner.borrow_mut().unwrap_region_constraints().leak_check( self.tcx, - overly_polymorphic, + outer_universe, self.universe(), - snapshot, + only_consider_snapshot, ) } } |