1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/generic_const_exprs/object-safety-ok-infer-err.rs b/src/test/ui/const-generics/generic_const_exprs/object-safety-ok-infer-err.rs
new file mode 100644
index 000000000..79e9834b5
--- /dev/null
+++ b/src/test/ui/const-generics/generic_const_exprs/object-safety-ok-infer-err.rs
@@ -0,0 +1,21 @@
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+trait Foo<const N: usize> {
+    fn test(&self) -> [u8; N + 1];
+}
+
+impl<const N: usize> Foo<N> for () {
+    fn test(&self) -> [u8; N + 1] {
+        [0; N + 1]
+    }
+}
+
+fn use_dyn<const N: usize>(v: &dyn Foo<N>) where [u8; N + 1]: Sized {
+    assert_eq!(v.test(), [0; N + 1]);
+}
+
+fn main() {
+    use_dyn(&());
+    //~^ ERROR type annotations needed
+}