1 files changed, 10 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-22599.rs b/tests/ui/issues/issue-22599.rs
new file mode 100644
index 000000000..05096e5c1
--- /dev/null
+++ b/tests/ui/issues/issue-22599.rs
@@ -0,0 +1,10 @@
+#![deny(unused_variables)]
+
+fn f(_: i32) {}
+
+fn main() {
+    let mut v = 0;
+    f(v);
+    v = match 0 { a => 0 }; //~ ERROR: unused variable: `a`
+    f(v);
+}