1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/dest-prop/skeptic-miscompile.rs b/src/test/ui/dest-prop/skeptic-miscompile.rs
new file mode 100644
index 000000000..4bb61dbc7
--- /dev/null
+++ b/src/test/ui/dest-prop/skeptic-miscompile.rs
@@ -0,0 +1,24 @@
+// run-pass
+
+// compile-flags: -Zmir-opt-level=3
+
+trait IterExt: Iterator {
+    fn fold_ex<B, F>(mut self, init: B, mut f: F) -> B
+    where
+        Self: Sized,
+        F: FnMut(B, Self::Item) -> B,
+    {
+        let mut accum = init;
+        while let Some(x) = self.next() {
+            accum = f(accum, x);
+        }
+        accum
+    }
+}
+
+impl<T: Iterator> IterExt for T {}
+
+fn main() {
+    let test = &["\n"];
+    test.iter().fold_ex(String::new(), |_, b| b.to_string());
+}