diff -r 3106d9ca2f9c -r f3ab28ed22e5 ucx/cx/common.h
--- a/ucx/cx/common.h	Mon Oct 13 21:07:59 2025 +0200
+++ b/ucx/cx/common.h	Mon Oct 13 21:31:58 2025 +0200
@@ -49,7 +49,7 @@
  * <a href="https://uap-core.de/hg/ucx">https://uap-core.de/hg/ucx</a>
  * </p>
  *
- * <h2>LICENCE</h2>
+ * <h2>LICENSE</h2>
  *
  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
  *
@@ -131,6 +131,11 @@
 #endif
 
 /**
+ * Inform the compiler that falling through a switch case is intentional.
+ */
+#define cx_attr_fallthrough __attribute__((__fallthrough__))
+
+/**
  * All pointer arguments must be non-NULL.
  */
 #define cx_attr_nonnull __attribute__((__nonnull__))
@@ -184,7 +189,7 @@
  */
 #define cx_attr_cstr_arg(idx)
 /**
- * No support for access attribute in clang.
+ * No support for the access attribute in clang.
  */
 #define cx_attr_access(mode, ...)
 #else