1 files changed, 13 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-3026.rs b/src/test/ui/issues/issue-3026.rs
new file mode 100644
index 000000000..1dea8134f
--- /dev/null
+++ b/src/test/ui/issues/issue-3026.rs
@@ -0,0 +1,13 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+#![feature(box_syntax)]
+
+use std::collections::HashMap;
+
+pub fn main() {
+    let x: Box<_>;
+    let mut buggy_map: HashMap<usize, &usize> = HashMap::new();
+    x = box 1;
+    buggy_map.insert(42, &*x);
+}