bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Add more commments

Browse source
This commit is contained in:
Santiago Pastorino 2022-03-17 12:37:18 -03:00
parent 91846fe12a
commit 9c076f3f90
No known key found for this signature in database
GPG key ID: 8131A24E0C79EFAF
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
compiler/rustc_trait_selection/src/traits/coherence.rs
View file

@ -353,6 +353,7 @@ fn negative_impl<'cx, 'tcx>(
}) })
} }
/// Try to prove that a negative impl exist for the given obligation and their super predicates.
#[instrument(level = "debug", skip(selcx))] #[instrument(level = "debug", skip(selcx))]
fn negative_impl_exists<'cx, 'tcx>( fn negative_impl_exists<'cx, 'tcx>(
selcx: &SelectionContext<'cx, 'tcx>, selcx: &SelectionContext<'cx, 'tcx>,
@ -366,6 +367,7 @@ fn negative_impl_exists<'cx, 'tcx>(
return true; return true;
} }
// Try to prove a negative obligation exist for super predicates
// FIXME we should implement an `assemble_neg_candidates` fn // FIXME we should implement an `assemble_neg_candidates` fn
for o in util::elaborate_predicates(infcx.tcx, iter::once(o.predicate)) { for o in util::elaborate_predicates(infcx.tcx, iter::once(o.predicate)) {
if resolve_negative_obligation(infcx, param_env, region_context, &o) { if resolve_negative_obligation(infcx, param_env, region_context, &o) {