1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/binding/optional_comma_in_match_arm.rs b/src/test/ui/binding/optional_comma_in_match_arm.rs
new file mode 100644
index 000000000..fc268bf2a
--- /dev/null
+++ b/src/test/ui/binding/optional_comma_in_match_arm.rs
@@ -0,0 +1,40 @@
+// run-pass
+#![allow(unused_unsafe)]
+// ignore-pretty issue #37199
+#![allow(while_true)]
+
+fn main() {
+    let x = 1;
+
+    match x {
+        1 => loop { break; },
+        2 => while true { break; },
+        3 => if true { () },
+        4 => if true { () } else { () },
+        5 => match () { () => () },
+        6 => { () },
+        7 => unsafe { () },
+        _ => (),
+    }
+
+    match x {
+        1 => loop { break; }
+        2 => while true { break; }
+        3 => if true { () }
+        4 => if true { () } else { () }
+        5 => match () { () => () }
+        6 => { () }
+        7 => unsafe { () }
+        _ => ()
+    }
+
+    let r: &i32 = &x;
+
+    match r {
+        // Absence of comma should not cause confusion between a pattern
+        // and a bitwise and.
+        &1 => if true { () } else { () }
+        &2 => (),
+        _ =>()
+    }
+}