Add regression test

Author: JohnTitor

tests/ui/crashes/ice-5223.rs

@@ -0,0 +1,18 @@
+// Regression test for #5233
+
+#![feature(const_generics)]
+#![allow(incomplete_features)]
+#![warn(clippy::indexing_slicing, clippy::iter_cloned_collect)]
+
+pub struct KotomineArray<T, const N: usize> {
+    arr: [T; N],
+}
+
+impl<T: std::clone::Clone, const N: usize> KotomineArray<T, N> {
+    pub fn ice(self) {
+        let _ = self.arr[..];
+        let _ = self.arr.iter().cloned().collect::<Vec<_>>();
+    }
+}
+
+fn main() {}