Assert that we do not infinitely loop in ir::Item::name_target

This re-uses the infrastructure used when asserting that
`ItemAncestorsIter` does not infinitely loop in `ir::Item::name_target`.

1 files changed, 5 insertions, 0 deletions

diff --git a/libbindgen/src/ir/item.rs b/libbindgen/src/ir/item.rs
index f4272e2d..74c65083 100644
--- a/libbindgen/src/ir/item.rs
+++ b/libbindgen/src/ir/item.rs
@@ -588,8 +588,13 @@ impl Item {
                    ctx: &BindgenContext,
                    for_name_checking: bool)
                    -> ItemId {
+        let mut targets_seen = AncestorsSeen::new();
         let mut item = self;
+
         loop {
+            debug_assert!(!targets_seen.contains(&item.id()));
+            targets_seen.insert(item.id());
+
             match *item.kind() {
                 ItemKind::Type(ref ty) => {
                     match *ty.kind() {