Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/ui/macros/macro-of-higher-order.rs b/tests/ui/macros/macro-of-higher-order.rs
new file mode 100644
index 000000000..ec551d6cd
--- /dev/null
+++ b/tests/ui/macros/macro-of-higher-order.rs
@@ -0,0 +1,22 @@
+// run-pass
+
+macro_rules! higher_order {
+    (subst $lhs:tt => $rhs:tt) => ({
+            macro_rules! anon { $lhs => $rhs }
+            anon!(1_usize, 2_usize, "foo")
+    });
+}
+
+macro_rules! outer {
+    ($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);
+}