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-rw-r--r--compiler/rustc_middle/src/mir/terminator.rs5
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_middle/src/mir/terminator.rs b/compiler/rustc_middle/src/mir/terminator.rs
index 2c6126cdd..1b9c1438f 100644
--- a/compiler/rustc_middle/src/mir/terminator.rs
+++ b/compiler/rustc_middle/src/mir/terminator.rs
@@ -105,7 +105,7 @@ pub struct Terminator<'tcx> {
pub kind: TerminatorKind<'tcx>,
}
-pub type Successors<'a> = impl Iterator<Item = BasicBlock> + 'a;
+pub type Successors<'a> = impl DoubleEndedIterator<Item = BasicBlock> + 'a;
pub type SuccessorsMut<'a> =
iter::Chain<std::option::IntoIter<&'a mut BasicBlock>, slice::IterMut<'a, BasicBlock>>;
@@ -272,7 +272,8 @@ impl<'tcx> Debug for TerminatorKind<'tcx> {
let unwind = match self.unwind() {
// Not needed or included in successors
- None | Some(UnwindAction::Continue) | Some(UnwindAction::Cleanup(_)) => None,
+ None | Some(UnwindAction::Cleanup(_)) => None,
+ Some(UnwindAction::Continue) => Some("unwind continue"),
Some(UnwindAction::Unreachable) => Some("unwind unreachable"),
Some(UnwindAction::Terminate) => Some("unwind terminate"),
};