1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/const-generics/generic_const_exprs/associated-consts.rs b/tests/ui/const-generics/generic_const_exprs/associated-consts.rs
new file mode 100644
index 000000000..b839008d4
--- /dev/null
+++ b/tests/ui/const-generics/generic_const_exprs/associated-consts.rs
@@ -0,0 +1,31 @@
+// run-pass
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+pub trait BlockCipher {
+    const BLOCK_SIZE: usize;
+}
+
+struct FooCipher;
+impl BlockCipher for FooCipher {
+    const BLOCK_SIZE: usize = 64;
+}
+
+struct BarCipher;
+impl BlockCipher for BarCipher {
+    const BLOCK_SIZE: usize = 32;
+}
+
+pub struct Block<C>(#[allow(unused_tuple_struct_fields)] C);
+
+pub fn test<C: BlockCipher, const M: usize>()
+where
+    [u8; M - C::BLOCK_SIZE]: Sized,
+{
+    let _ = [0; M - C::BLOCK_SIZE];
+}
+
+fn main() {
+    test::<FooCipher, 128>();
+    test::<BarCipher, 64>();
+}