1 files changed, 9 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-52240.stderr b/src/test/ui/issues/issue-52240.stderr
new file mode 100644
index 000000000..69b663b17
--- /dev/null
+++ b/src/test/ui/issues/issue-52240.stderr
@@ -0,0 +1,9 @@
+error[E0596]: cannot borrow data in a `&` reference as mutable
+  --> $DIR/issue-52240.rs:9:27
+   |
+LL |     if let (Some(Foo::Bar(ref mut val)), _) = (&arr.get(0), 0) {
+   |                           ^^^^^^^^^^^ cannot borrow as mutable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.