1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrow-raw-address-of-deref-mutability.rs b/tests/ui/borrowck/borrow-raw-address-of-deref-mutability.rs
new file mode 100644
index 000000000..712873528
--- /dev/null
+++ b/tests/ui/borrowck/borrow-raw-address-of-deref-mutability.rs
@@ -0,0 +1,17 @@
+// Check that `&raw mut` cannot be used to turn a `&T` into a `*mut T`.
+
+#![feature(raw_ref_op)]
+
+fn raw_reborrow() {
+    let x = &0;
+
+    let q = &raw mut *x;                //~ ERROR cannot borrow
+}
+
+unsafe fn raw_reborrow_of_raw() {
+    let x = &0 as *const i32;
+
+    let q = &raw mut *x;                //~ ERROR cannot borrow
+}
+
+fn main() {}