From 679c6a1f7a9a13c186af996349e23fc97ac20997 Mon Sep 17 00:00:00 2001
From: Niki Roo <niki@nikiroo.be>
Date: Tue, 26 May 2020 21:08:11 +0200
Subject: [PATCH] throw IO when image is used on close

---
 Image.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Image.java b/Image.java
index 4518577..9b28835 100644
--- a/Image.java
+++ b/Image.java
@@ -116,7 +116,13 @@ public class Image implements Closeable, Serializable {
 	 *             in case of I/O error
 	 */
 	public InputStream newInputStream() throws IOException {
-		return new MarkableFileInputStream(data);
+		synchronized (instanceLock) {
+			if (data == null) {
+				throw new IOException("Image was close()d");
+			}
+			
+			return new MarkableFileInputStream(data);	
+		}
 	}
 
 	/**
@@ -175,6 +181,7 @@ public class Image implements Closeable, Serializable {
 	@Override
 	public void close() throws IOException {
 		synchronized (instanceLock) {
+			new Exception().printStackTrace();
 			if (size >= 0) {
 				size = -1;
 				data.delete();
-- 
2.27.0