From ca637f057bfda46914819c71c1e9af67ca1fb2e4 Mon Sep 17 00:00:00 2001
From: Rafal Kupiec <belliash@codingworkshop.eu.org>
Date: Sat, 27 Sep 2025 17:36:13 +0200
Subject: [PATCH] Fix overflow

---
 tools/exetool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/exetool.c b/tools/exetool.c
index 571d994..d034cab 100644
--- a/tools/exetool.c
+++ b/tools/exetool.c
@@ -167,7 +167,7 @@ int main(int argc, char *argv[])
     fread(&SubSystem, sizeof(unsigned short), 1, ExeFile);
 
     /* Seek back to the SubSystem field in the optional header */
-    fseek(ExeFile, -sizeof(unsigned short), SEEK_CUR);
+    fseek(ExeFile, -(long)sizeof(unsigned short), SEEK_CUR);
 
     /* Write the new SubSystem value */
     fwrite(&NewSubSystem->Identifier, sizeof(unsigned short), 1, ExeFile);