From 304686cfc0cb11be9e4d941de0c3722108218028 Mon Sep 17 00:00:00 2001
From: Andy Nguyen <theofficialflow1996@gmail.com>
Date: Wed, 27 Oct 2021 21:06:56 +0200
Subject: [PATCH] Check for negative offsets.

---
 com/bdjb/JIT.java | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/com/bdjb/JIT.java b/com/bdjb/JIT.java
index a365462..6fb3417 100644
--- a/com/bdjb/JIT.java
+++ b/com/bdjb/JIT.java
@@ -142,11 +142,11 @@ public final class JIT {
     RandomAccessFile file = new RandomAccessFile(path, "r");
 
     if ((dataSectionOffset & (PAGE_SIZE - 1)) != 0) {
-      throw new IllegalArgumentException("Ddata section offset is not page aligned.");
+      throw new IllegalArgumentException("Unaligned data section offset.");
     }
 
-    if (dataSectionOffset > file.length()) {
-      throw new IllegalArgumentException("Data section offset is too big.");
+    if (dataSectionOffset < 0 || dataSectionOffset > file.length()) {
+      throw new IllegalArgumentException("Invalid data section offset.");
     }
 
     // TODO: Currently we just use maximum size so that the address is predictable.