Add regression test.

rust-lang · Jul 19, 2016 · 485e2df · 485e2df
1 parent b40b7ef
commit 485e2df
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/test/run-pass/macro-of-higher-order.rs b/src/test/run-pass/macro-of-higher-order.rs
@@ -16,7 +16,16 @@ macro_rules! higher_order {
     });
 }
 
+macro_rules! outer {
+    ($x:expr; $fragment:ident) => {
+        macro_rules! inner { ($y:$fragment) => { $x + $y } }
+    }
+}
+
 fn main() {
     let val = higher_order!(subst ($x:expr, $y:expr, $foo:expr) => (($x + $y, $foo)));
     assert_eq!(val, (3, "foo"));
+
+    outer!(2; expr);
+    assert_eq!(inner!(3), 5);
 }