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Remove assertion that the argument to every EndRegion correspond to

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some dataflow-tracked borrow-data entry.

Fix #44828

(The comment thread on the aforementioned issue discusses why its best
to just remove this assertion.)
This commit is contained in:
Felix S. Klock II 2017-10-02 22:40:51 +02:00
parent 2146c613d1
commit 17f6b6810b
1 changed files with 5 additions and 5 deletions
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10
src/librustc_mir/dataflow/impls/borrows.rs
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@ -122,11 +122,11 @@ impl<'a, 'tcx> BitDenotation for Borrows<'a, 'tcx> {
});
match stmt.kind {
mir::StatementKind::EndRegion(region_scope) => {
let borrow_indexes = self.region_map.get(&ReScope(region_scope)).unwrap_or_else(|| {
panic!("could not find BorrowIndexs for region scope {:?}", region_scope);
});
for idx in borrow_indexes { sets.kill(&idx); }
if let Some(borrow_indexes) = self.region_map.get(&ReScope(region_scope)) {
for idx in borrow_indexes { sets.kill(&idx); }
} else {
// (if there is no entry, then there are no borrows to be tracked)
}
}
mir::StatementKind::Assign(_, ref rhs) => {