1 files changed, 26 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-54477-reduced-2.rs b/src/test/ui/issues/issue-54477-reduced-2.rs
new file mode 100644
index 000000000..199d69b45
--- /dev/null
+++ b/src/test/ui/issues/issue-54477-reduced-2.rs
@@ -0,0 +1,26 @@
+// run-pass
+// rust-lang/rust#54477: runtime bug in the VecDeque library that was
+// exposed by this test case, derived from test suite of crates.io
+// `collection` crate.
+
+use std::collections::VecDeque;
+
+fn main() {
+    let mut vecdeque_13 = VecDeque::from(vec![ ]);
+    let mut vecdeque_29 = VecDeque::from(vec![ 0 ]);
+    vecdeque_29.insert(0,  30 );
+    vecdeque_29.insert(1,  31 );
+    vecdeque_29.insert(2,  32 );
+    vecdeque_29.insert(3,  33 );
+    vecdeque_29.insert(4,  34 );
+    vecdeque_29.insert(5,  35 );
+    // println!("vecdeque_13: {:?}", vecdeque_13);
+    // println!("vecdeque_29: {:?}", vecdeque_29);
+
+    // println!("Invoking: `vecdeque_13.append(&mut vecdeque_29)`");
+    vecdeque_13.append(&mut vecdeque_29);
+
+    // println!("vecdeque_13: {:?}", vecdeque_13);
+
+    assert_eq!(vecdeque_13, VecDeque::from(vec![30, 31, 32, 33, 34, 35, 0]));
+}