From 591ef31613a6f37d21d90bd8355b313eaa70a420 Mon Sep 17 00:00:00 2001
From: Mark Adler <git@madler.net>
Date: Tue, 17 Feb 2026 04:35:11 -0800
Subject: Avoid using the value of an undefined macro in crc32.c.

---
 crc32.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crc32.c b/crc32.c
index 166330d0..97eb5fda 100644
--- a/crc32.c
+++ b/crc32.c
@@ -106,7 +106,8 @@
 #endif
 
 /* If available, use the ARM processor CRC32 instruction. */
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
+#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && \
+    defined(W) && W == 8
 #  define ARMCRC32
 #endif
 
-- 
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