const param macro test

src/test/ui/const-generics/const-param-hygiene.rs

@@ -0,0 +1,22 @@
+// run-pass
+// revisions: full min
+
+#![cfg_attr(full, feature(const_generics))]
+#![cfg_attr(full, allow(incomplete_features))]
+#![cfg_attr(min, feature(min_const_generics))]
+
+macro_rules! bar {
+    ($($t:tt)*) => { impl<const N: usize> $($t)* };
+}
+
+macro_rules! baz {
+    ($t:tt) => { fn test<const M: usize>(&self) -> usize { $t } };
+}
+
+struct Foo<const N: usize>;
+
+bar!(Foo<N> { baz!{ M } });
+
+fn main() {
+    assert_eq!(Foo::<7>.test::<3>(), 3);
+}