1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.rs b/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.rs
new file mode 100644
index 00000000000..b0d6e27a3d5
--- /dev/null
+++ b/tests/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.rs
@@ -0,0 +1,22 @@
+#![allow(warnings)]
+
+struct Wrap<'p> { p: &'p mut i32 }
+
+impl<'p> Drop for Wrap<'p> {
+    fn drop(&mut self) {
+        *self.p += 1;
+    }
+}
+
+struct Foo<'p> { a: String, b: Wrap<'p> }
+
+fn main() {
+    let mut x = 0;
+    let wrap = Wrap { p: &mut x };
+    let s = String::from("str");
+    let foo = Foo { a: s, b: wrap };
+    std::mem::drop(foo.a);
+    std::mem::drop(foo.b);
+    x = 1; //~ ERROR cannot assign to `x` because it is borrowed [E0506]
+    // FIXME ^ This currently errors and it should not.
+}