From f9f78b81da37f19f7d193efc180614291d2ee299 Mon Sep 17 00:00:00 2001
From: Enyby <enyby@yandex.ru>
Date: Mon, 7 Oct 2019 14:26:21 +0300
Subject: [PATCH] Allow read zero bytes in io lib methods.

---
 src/core/org/luaj/vm2/lib/IoLib.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/org/luaj/vm2/lib/IoLib.java b/src/core/org/luaj/vm2/lib/IoLib.java
index 34b3e941..94a9ef52 100644
--- a/src/core/org/luaj/vm2/lib/IoLib.java
+++ b/src/core/org/luaj/vm2/lib/IoLib.java
@@ -594,7 +594,7 @@ public class IoLib extends TwoArgFunction {
 		int c;
 		try {
 			if ( lineonly ) {
-				loop: while ( (c = f.read()) > 0 ) {
+				loop: while ( (c = f.read()) >= 0 ) {
 					switch ( c ) {
 					case '\r': if (withend) baos.write(c); break;
 					case '\n': if (withend) baos.write(c); break loop;
@@ -602,7 +602,7 @@ public class IoLib extends TwoArgFunction {
 					}
 				}
 			} else {
-				while ( (c = f.read()) > 0 )
+				while ( (c = f.read()) >= 0 )
 					baos.write(c);
 			}
 		} catch ( EOFException e ) {