1 files changed, 30 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/defaults/trait_objects_fail.rs b/src/test/ui/const-generics/defaults/trait_objects_fail.rs
new file mode 100644
index 000000000..6ab803f99
--- /dev/null
+++ b/src/test/ui/const-generics/defaults/trait_objects_fail.rs
@@ -0,0 +1,30 @@
+trait Trait<const N: u8 = 12> {
+    fn uwu(&self) -> u8 {
+        N
+    }
+}
+
+impl Trait<2> for u32 {}
+
+fn foo(arg: &dyn Trait) -> u8 {
+    arg.uwu()
+}
+
+trait Traitor<const N: u8 = 1, const M: u8 = N> {
+    fn owo(&self) -> u8 {
+        M
+    }
+}
+
+impl Traitor<2, 3> for bool {}
+
+fn bar<const N: u8>(arg: &dyn Traitor<N>) -> u8 {
+    arg.owo()
+}
+
+fn main() {
+    foo(&10_u32);
+    //~^ error: the trait bound `u32: Trait` is not satisfied
+    bar(&true);
+    //~^ error: the trait bound `bool: Traitor<_>` is not satisfied
+}