1 files changed, 7 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/issue-99642.rs b/src/test/ui/impl-trait/issue-99642.rs
new file mode 100644
index 000000000..75af60491
--- /dev/null
+++ b/src/test/ui/impl-trait/issue-99642.rs
@@ -0,0 +1,7 @@
+// check-pass
+
+fn test() -> impl Iterator<Item = impl Sized> {
+    Box::new(0..) as Box<dyn Iterator<Item = _>>
+}
+
+fn main() {}