From 7b32365433b7fbef4b7ad9ce2f9f5721abda47f7 Mon Sep 17 00:00:00 2001
From: Weixie Cui <cuiweixie@gmail.com>
Date: Fri, 27 Mar 2026 11:18:06 +0800
Subject: [PATCH] minor refactor: fix read(char[], int, int) loop bound in
 LineColumnReader

Use i < startOffset + length instead of i <= startOffset + length so the
method reads at most length characters into the destination slice, matching
BufferedReader semantics and avoiding an off-by-one past the requested range.
---
 src/main/java/groovy/io/LineColumnReader.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/groovy/io/LineColumnReader.java b/src/main/java/groovy/io/LineColumnReader.java
index 1d3b113e569..a49462e1a2f 100644
--- a/src/main/java/groovy/io/LineColumnReader.java
+++ b/src/main/java/groovy/io/LineColumnReader.java
@@ -136,7 +136,7 @@ public int read() throws IOException {
      */
     @Override
     public int read(char[] chars, int startOffset, int length) throws IOException {
-        for (int i = startOffset; i <= startOffset + length; i++) {
+        for (int i = startOffset; i < startOffset + length; i++) {
             int readInt = read();
             if (readInt == -1) return i - startOffset;
             chars[i] = (char)readInt;