diff --git a/tests/ui/ice-4579.rs b/tests/ui/ice-4579.rs
new file mode 100644
index 000000000000..2e7e279f847d
--- /dev/null
+++ b/tests/ui/ice-4579.rs
@@ -0,0 +1,13 @@
+#![allow(clippy::single_match)]
+
+use std::ptr;
+
+fn main() {
+    match Some(0_usize) {
+        Some(_) => {
+            let s = "012345";
+            unsafe { ptr::read(s.as_ptr().offset(1) as *const [u8; 5]) };
+        },
+        _ => (),
+    };
+}