1 files changed, 28 insertions, 0 deletions

diff --git a/tests/ui/const-generics/issues/issue-79674.rs b/tests/ui/const-generics/issues/issue-79674.rs
new file mode 100644
index 000000000..ff141d328
--- /dev/null
+++ b/tests/ui/const-generics/issues/issue-79674.rs
@@ -0,0 +1,28 @@
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+trait MiniTypeId {
+    const TYPE_ID: u64;
+}
+
+impl<T> MiniTypeId for T {
+    const TYPE_ID: u64 = 0;
+}
+
+enum Lift<const V: bool> {}
+
+trait IsFalse {}
+impl IsFalse for Lift<false> {}
+
+const fn is_same_type<T: MiniTypeId, U: MiniTypeId>() -> bool {
+    T::TYPE_ID == U::TYPE_ID
+}
+
+fn requires_distinct<A, B>(_a: A, _b: B) where
+    A: MiniTypeId, B: MiniTypeId,
+    Lift<{is_same_type::<A, B>()}>: IsFalse {}
+
+fn main() {
+    requires_distinct("str", 12);
+    //~^ ERROR mismatched types
+}