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-rw-r--r--src/test/ui/const-generics/legacy-const-generics.rs18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/legacy-const-generics.rs b/src/test/ui/const-generics/legacy-const-generics.rs
new file mode 100644
index 000000000..9abc72d98
--- /dev/null
+++ b/src/test/ui/const-generics/legacy-const-generics.rs
@@ -0,0 +1,18 @@
+// aux-build:legacy-const-generics.rs
+// run-pass
+
+#![feature(rustc_attrs)]
+
+extern crate legacy_const_generics;
+
+#[rustc_legacy_const_generics(1)]
+pub fn bar<const Y: usize>(x: usize, z: usize) -> [usize; 3] {
+ [x, Y, z]
+}
+
+fn main() {
+ assert_eq!(legacy_const_generics::foo(0 + 0, 1 + 1, 2 + 2), [0, 2, 4]);
+ assert_eq!(legacy_const_generics::foo::<{1 + 1}>(0 + 0, 2 + 2), [0, 2, 4]);
+ // FIXME: Only works cross-crate
+ //assert_eq!(bar(0, 1, 2), [0, 1, 2]);
+}