1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/defaults/wfness.rs b/src/test/ui/const-generics/defaults/wfness.rs
new file mode 100644
index 000000000..a93f67081
--- /dev/null
+++ b/src/test/ui/const-generics/defaults/wfness.rs
@@ -0,0 +1,23 @@
+struct Ooopsies<const N: u8 = { u8::MAX + 1 }>;
+//~^ error: evaluation of constant value failed
+
+trait Trait<const N: u8> {}
+impl Trait<3> for () {}
+struct WhereClause<const N: u8 = 2>
+where
+    (): Trait<N>;
+//~^ error: the trait bound `(): Trait<2>` is not satisfied
+
+trait Traitor<T, const N: u8> {}
+struct WhereClauseTooGeneric<T = u32, const N: u8 = 2>(T)
+where
+    (): Traitor<T, N>;
+
+// no error on struct def
+struct DependentDefaultWfness<const N: u8 = 1, T = WhereClause<N>>(T);
+fn foo() -> DependentDefaultWfness {
+    //~^ error: the trait bound `(): Trait<1>` is not satisfied
+    loop {}
+}
+
+fn main() {}