1 files changed, 9 insertions, 0 deletions
diff --git a/library/std/src/sys/windows/alloc/tests.rs b/library/std/src/sys/windows/alloc/tests.rs
new file mode 100644
index 000000000..674a3e1d9
--- /dev/null
+++ b/library/std/src/sys/windows/alloc/tests.rs
@@ -0,0 +1,9 @@
+use super::{Header, MIN_ALIGN};
+use crate::mem;
+
+#[test]
+fn alloc_header() {
+    // Header must fit in the padding before an aligned pointer
+    assert!(mem::size_of::<Header>() <= MIN_ALIGN);
+    assert!(mem::align_of::<Header>() <= MIN_ALIGN);
+}