From 87ae4dbf5cc1e81db845c659583aa489d532ae8c Mon Sep 17 00:00:00 2001
From: Christian Poveda <christian.poveda@ferrous-systems.com>
Date: Fri, 12 Sep 2025 14:41:26 -0500
Subject: [PATCH] Improve `core::ptr` coverage

---
 library/coretests/tests/ptr.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/library/coretests/tests/ptr.rs b/library/coretests/tests/ptr.rs
index f8774833d0a54..4d5138d539b95 100644
--- a/library/coretests/tests/ptr.rs
+++ b/library/coretests/tests/ptr.rs
@@ -489,6 +489,14 @@ fn is_aligned() {
     assert_ne!(ptr.is_aligned_to(8), ptr.wrapping_add(1).is_aligned_to(8));
 }
 
+#[test]
+#[should_panic = "is_aligned_to: align is not a power-of-two"]
+fn invalid_is_aligned() {
+    let data = 42;
+    let ptr: *const i32 = &data;
+    assert!(ptr.is_aligned_to(3));
+}
+
 #[test]
 fn offset_from() {
     let mut a = [0; 5];