Rollup merge of #107248 - erikdesjardins:addrspace, r=oli-obk

[rust.git] / compiler / rustc_borrowck / src / region_infer / mod.rs

diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs
index 308f6e19a73e86b2277985a092a5748a77827bd2..2ae13990a4589834128aea43c4b98bbe0f5d0ef3 100644 (file)
--- a/compiler/rustc_borrowck/src/region_infer/mod.rs
+++ b/compiler/rustc_borrowck/src/region_infer/mod.rs
@@ -7,7 +7,6 @@
 use rustc_data_structures::graph::scc::Sccs;
 use rustc_errors::Diagnostic;
 use rustc_hir::def_id::CRATE_DEF_ID;
-use rustc_hir::CRATE_HIR_ID;
 use rustc_index::vec::IndexVec;
 use rustc_infer::infer::outlives::test_type_match;
 use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq};
@@ -527,6 +526,14 @@ pub(crate) fn region_value_str(&self, r: RegionVid) -> String {
         self.scc_values.region_value_str(scc)
     }
 
+    pub(crate) fn placeholders_contained_in<'a>(
+        &'a self,
+        r: RegionVid,
+    ) -> impl Iterator<Item = ty::PlaceholderRegion> + 'a {
+        let scc = self.constraint_sccs.scc(r.to_region_vid());
+        self.scc_values.placeholders_contained_in(scc)
+    }
+
     /// Returns access to the value of `r` for debugging purposes.
     pub(crate) fn region_universe(&self, r: RegionVid) -> ty::UniverseIndex {
         let scc = self.constraint_sccs.scc(r.to_region_vid());
@@ -680,7 +687,7 @@ fn compute_value_for_scc(&mut self, scc_a: ConstraintSccIndex) {
     /// enforce the constraint).
     ///
     /// The current value of `scc` at the time the method is invoked
-    /// is considered a *lower bound*.  If possible, we will modify
+    /// is considered a *lower bound*. If possible, we will modify
     /// the constraint to set it equal to one of the option regions.
     /// If we make any changes, returns true, else false.
     #[instrument(skip(self, member_constraint_index), level = "debug")]
@@ -959,7 +966,7 @@ fn try_promote_type_test(
             //
             // This is needed because -- particularly in the case
             // where `ur` is a local bound -- we are sometimes in a
-            // position to prove things that our caller cannot.  See
+            // position to prove things that our caller cannot. See
             // #53570 for an example.
             if self.eval_verify_bound(infcx, param_env, generic_ty, ur, &type_test.verify_bound) {
                 continue;
@@ -2014,7 +2021,7 @@ pub(crate) fn best_blame_constraint(
             .map(|constraint| BlameConstraint {
                 category: constraint.category,
                 from_closure: constraint.from_closure,
-                cause: ObligationCause::new(constraint.span, CRATE_HIR_ID, cause_code.clone()),
+                cause: ObligationCause::new(constraint.span, CRATE_DEF_ID, cause_code.clone()),
                 variance_info: constraint.variance_info,
                 outlives_constraint: *constraint,
             })
@@ -2035,7 +2042,7 @@ pub(crate) fn best_blame_constraint(
         //    '5: '6 ('6 is the target)
         //
         // Some of those regions are unified with `'6` (in the same
-        // SCC).  We want to screen those out. After that point, the
+        // SCC). We want to screen those out. After that point, the
         // "closest" constraint we have to the end is going to be the
         // most likely to be the point where the value escapes -- but
         // we still want to screen for an "interesting" point to