bjoernager/rust
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move considering_regions to the infcx

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This commit is contained in:
lcnr 2022-07-20 11:40:15 +02:00
parent ceeb5ade20
commit 608625dae9
12 changed files with 75 additions and 88 deletions
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13
compiler/rustc_trait_selection/src/traits/specialize/mod.rs
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@ -207,18 +207,7 @@ fn fulfill_implication<'a, 'tcx>(
// (which are packed up in penv)
infcx.save_and_restore_in_snapshot_flag(|infcx| {
// If we came from `translate_substs`, we already know that the
// predicates for our impl hold (after all, we know that a more
// specialized impl holds, so our impl must hold too), and
// we only want to process the projections to determine the
// the types in our substs using RFC 447, so we can safely
// ignore region obligations, which allows us to avoid threading
// a node-id to assign them with.
//
// If we came from specialization graph construction, then
// we already make a mockery out of the region system, so
// why not ignore them a bit earlier?
let mut fulfill_cx = FulfillmentContext::new_ignoring_regions();
let mut fulfill_cx = FulfillmentContext::new();
for oblig in obligations.chain(more_obligations) {
fulfill_cx.register_predicate_obligation(&infcx, oblig);
}