From 6f3ef22d19925a40f912919778b69c7e570bbc43 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Mon, 22 Sep 2025 11:27:23 -0700
Subject: [PATCH] Fixed build warning

---
 test/testautomation_blit.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/testautomation_blit.c b/test/testautomation_blit.c
index a461005c5a..85a96fd67c 100644
--- a/test/testautomation_blit.c
+++ b/test/testautomation_blit.c
@@ -88,7 +88,10 @@ Uint32 FNVHash(Uint32* buf, int length) {
  * Wraps the FNV-1a hash for an input surface's pixels
  */
 Uint32 hashSurfacePixels(SDL_Surface * surface) {
-    Uint64 buffer_size = surface->w * surface->h;
+    int buffer_size = surface->w * surface->h;
+    if (buffer_size < 0) {
+        return 0;
+    }
     return FNVHash(surface->pixels, buffer_size);
 }
 /* ================= Test Case Implementation ================== */