From c9ccc99f71fe68bf946ef45f00947e6f33ceea2d Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@lemstra.org>
Date: Sat, 18 Apr 2026 00:31:25 +0200
Subject: [PATCH] Fix missing volatile on quantum_info in WriteOnePNGImage

---
 coders/png.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/coders/png.c b/coders/png.c
index daf414322a..72eed711aa 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8053,7 +8053,7 @@ static MagickBooleanType WriteOnePNGImage(MngWriteInfo *mng_info,
     *volatile pixel_info;
 
   QuantumInfo
-    *quantum_info;
+    *volatile quantum_info;
 
   PNGErrorInfo
     error_info;