1 files changed, 44 insertions, 0 deletions
diff --git a/tests/ui/macros/rfc-3086-metavar-expr/required-feature.rs b/tests/ui/macros/rfc-3086-metavar-expr/required-feature.rs
new file mode 100644
index 00000000000..b4fef11f1e2
--- /dev/null
+++ b/tests/ui/macros/rfc-3086-metavar-expr/required-feature.rs
@@ -0,0 +1,44 @@
+macro_rules! count {
+    ( $( $e:stmt ),* ) => {
+        ${ count(e) }
+        //~^ ERROR meta-variable expressions are unstable
+    };
+}
+
+macro_rules! dollar_dollar {
+    () => {
+        macro_rules! bar {
+            ( $$( $$any:tt )* ) => { $$( $$any )* };
+            //~^ ERROR meta-variable expressions are unstable
+            //~| ERROR meta-variable expressions are unstable
+            //~| ERROR meta-variable expressions are unstable
+            //~| ERROR meta-variable expressions are unstable
+        }
+    };
+}
+
+macro_rules! index {
+    ( $( $e:stmt ),* ) => {
+        $( ${ignore(e)} ${index()} )*
+        //~^ ERROR meta-variable expressions are unstable
+        //~| ERROR meta-variable expressions are unstable
+    };
+}
+
+macro_rules! ignore {
+    ( $( $i:stmt ),* ) => {{
+        0 $( + 1 ${ignore(i)} )*
+        //~^ ERROR meta-variable expressions are unstable
+    }};
+}
+
+macro_rules! length {
+    ( $( $e:stmt ),* ) => {
+        $( ${ignore(e)} ${length()} )*
+        //~^ ERROR meta-variable expressions are unstable
+        //~| ERROR meta-variable expressions are unstable
+    };
+}
+
+fn main() {
+}