1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-pattern-typing-issue-19997.rs b/src/test/ui/regions/regions-pattern-typing-issue-19997.rs
new file mode 100644
index 000000000..39190697f
--- /dev/null
+++ b/src/test/ui/regions/regions-pattern-typing-issue-19997.rs
@@ -0,0 +1,11 @@
+fn main() {
+    let a0 = 0;
+    let f = 1;
+    let mut a1 = &a0;
+    match (&a1,) {
+        (&ref b0,) => {
+            a1 = &f; //~ ERROR cannot assign to `a1` because it is borrowed
+            drop(b0);
+        }
+    }
+}