1 files changed, 7 insertions, 0 deletions
diff --git a/tests/ui/borrowck/regions-escape-unboxed-closure.rs b/tests/ui/borrowck/regions-escape-unboxed-closure.rs
new file mode 100644
index 000000000..f01e47122
--- /dev/null
+++ b/tests/ui/borrowck/regions-escape-unboxed-closure.rs
@@ -0,0 +1,7 @@
+fn with_int(f: &mut dyn FnMut(&isize)) {}
+
+fn main() {
+    let mut x: Option<&isize> = None;
+    with_int(&mut |y| x = Some(y));
+    //~^ ERROR borrowed data escapes outside of closure
+}