1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/coercion/coerce-mut.stderr b/src/test/ui/coercion/coerce-mut.stderr
new file mode 100644
index 000000000..11a4f3101
--- /dev/null
+++ b/src/test/ui/coercion/coerce-mut.stderr
@@ -0,0 +1,19 @@
+error[E0308]: mismatched types
+  --> $DIR/coerce-mut.rs:5:7
+   |
+LL |     f(&x);
+   |     - ^^ types differ in mutability
+   |     |
+   |     arguments to this function are incorrect
+   |
+   = note: expected mutable reference `&mut i32`
+                      found reference `&{integer}`
+note: function defined here
+  --> $DIR/coerce-mut.rs:1:4
+   |
+LL | fn f(x: &mut i32) {}
+   |    ^ -----------
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.