1 files changed, 36 insertions, 0 deletions
diff --git a/tests/ui/span/issue28498-reject-lifetime-param.rs b/tests/ui/span/issue28498-reject-lifetime-param.rs
new file mode 100644
index 00000000000..1e719015785
--- /dev/null
+++ b/tests/ui/span/issue28498-reject-lifetime-param.rs
@@ -0,0 +1,36 @@
+// Demonstrate that having a lifetime param causes dropck to reject code
+// that might indirectly access previously dropped value.
+//
+// Compare with run-pass/issue28498-ugeh-with-lifetime-param.rs
+
+#[derive(Debug)]
+struct ScribbleOnDrop(String);
+
+impl Drop for ScribbleOnDrop {
+    fn drop(&mut self) {
+        self.0 = format!("DROPPED");
+    }
+}
+
+struct Foo<'a>(u32, &'a ScribbleOnDrop);
+
+impl<'a> Drop for Foo<'a> {
+    fn drop(&mut self) {
+        // Use of `may_dangle` is unsound, because destructor accesses borrowed data
+        // in `self.1` and we must force that to strictly outlive `self`.
+        println!("Dropping Foo({}, {:?})", self.0, self.1);
+    }
+}
+
+fn main() {
+    let (last_dropped, foo0);
+    let (foo1, first_dropped);
+
+    last_dropped = ScribbleOnDrop(format!("last"));
+    first_dropped = ScribbleOnDrop(format!("first"));
+    foo0 = Foo(0, &last_dropped); // OK
+    foo1 = Foo(1, &first_dropped);
+    //~^ ERROR `first_dropped` does not live long enough
+
+    println!("foo0.1: {:?} foo1.1: {:?}", foo0.1, foo1.1);
+}