1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/const-generics/legacy-const-generics-bad.rs b/tests/ui/const-generics/legacy-const-generics-bad.rs
new file mode 100644
index 000000000..538eee337
--- /dev/null
+++ b/tests/ui/const-generics/legacy-const-generics-bad.rs
@@ -0,0 +1,16 @@
+// aux-build:legacy-const-generics.rs
+
+extern crate legacy_const_generics;
+
+fn foo<const N: usize>() {
+    let a = 1;
+    legacy_const_generics::foo(0, a, 2);
+    //~^ ERROR attempt to use a non-constant value in a constant
+
+    legacy_const_generics::foo(0, N, 2);
+
+    legacy_const_generics::foo(0, N + 1, 2);
+    //~^ ERROR generic parameters may not be used in const operations
+}
+
+fn main() {}