1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrowck-struct-update-with-dtor.rs b/tests/ui/borrowck/borrowck-struct-update-with-dtor.rs
new file mode 100644
index 000000000..1f6ed6d46
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-struct-update-with-dtor.rs
@@ -0,0 +1,21 @@
+// Issue 4691: Ensure that functional-struct-update can only copy, not
+// move, when the struct implements Drop.
+
+struct B;
+struct S { a: isize, b: B }
+impl Drop for S { fn drop(&mut self) { } }
+
+struct T { a: isize, mv: Box<isize> }
+impl Drop for T { fn drop(&mut self) { } }
+
+fn f(s0:S) {
+    let _s2 = S{a: 2, ..s0};
+    //~^ ERROR [E0509]
+}
+
+fn g(s0:T) {
+    let _s2 = T{a: 2, ..s0};
+    //~^ ERROR [E0509]
+}
+
+fn main() { }