1 files changed, 11 insertions, 0 deletions
diff --git a/tests/ui/codemap_tests/issue-11715.rs b/tests/ui/codemap_tests/issue-11715.rs
new file mode 100644
index 000000000..617d57ff7
--- /dev/null
+++ b/tests/ui/codemap_tests/issue-11715.rs
@@ -0,0 +1,11 @@
+#![feature(rustc_attrs)]
+fn main() { #![rustc_error] // rust-lang/rust#49855
+    let mut x = "foo";
+    let y = &mut x;
+    let z = &mut x; //~ ERROR cannot borrow
+    z.use_mut();
+    y.use_mut();
+}
+
+trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { }  }
+impl<T> Fake for T { }