From b36028d1d1a54acec3e391b2dfe1c6f121b70a5c Mon Sep 17 00:00:00 2001
From: Rangi <sylvie.oukaour+rangi42@gmail.com>
Date: Tue, 25 Aug 2026 15:47:27 -0400
Subject: [PATCH] Avoid unsigned overflow in `INCBIN` slice size check

---
 src/asm/section.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/asm/section.cpp b/src/asm/section.cpp
index ea35ae39..733ca3db 100644
--- a/src/asm/section.cpp
+++ b/src/asm/section.cpp
@@ -1053,7 +1053,7 @@ bool sect_BinaryFileSlice(std::string const &name, uint32_t startPos, uint32_t l
 			    *fileSize
 			);
 			return false;
-		} else if (startPos + length > *fileSize) {
+		} else if (length > *fileSize - startPos) {
 			error(
 			    "Specified range in `INCBIN` file \"%s\" is out of bounds (%" PRIu32 " + %" PRIu32
 			    " > %" PRIu64 ")",