1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/const-generics/infer_arg_from_pat.rs b/tests/ui/const-generics/infer_arg_from_pat.rs
new file mode 100644
index 000000000..10317a1b9
--- /dev/null
+++ b/tests/ui/const-generics/infer_arg_from_pat.rs
@@ -0,0 +1,25 @@
+// run-pass
+//
+// see issue #70529
+
+struct A<const N: usize> {
+    arr: [u8; N],
+}
+
+impl<const N: usize> A<N> {
+    fn new() -> Self {
+        A {
+            arr: [0; N],
+        }
+    }
+
+    fn value(&self) -> usize {
+        N
+    }
+}
+
+fn main() {
+    let a = A::new();
+    let [_, _] = a.arr;
+    assert_eq!(a.value(), 2);
+}