1 files changed, 13 insertions, 0 deletions
diff --git a/tests/ui/nll/issue-48803.rs b/tests/ui/nll/issue-48803.rs
new file mode 100644
index 000000000..f7fd04179
--- /dev/null
+++ b/tests/ui/nll/issue-48803.rs
@@ -0,0 +1,13 @@
+fn flatten<'a, 'b, T>(x: &'a &'b T) -> &'a T {
+    x
+}
+
+fn main() {
+    let mut x = "original";
+    let y = &x;
+    let z = &y;
+    let w = flatten(z);
+    x = "modified";
+    //~^ ERROR cannot assign to `x` because it is borrowed [E0506]
+    println!("{}", w); // prints "modified"
+}