From b272f4e6153afed10b6eb1dab939b2e142a7a96a Mon Sep 17 00:00:00 2001
From: Arjen Poutsma <arjen.poutsma@broadcom.com>
Date: Mon, 18 Dec 2023 11:43:18 +0100
Subject: [PATCH] Correctly set capacity of remainder in
 DefaultDataBuffer::split

This commit ensures that the capacity of the remainder buffer after a
split operation is set directly on the field. Calling capacity(int)
caused a new buffer to be allocated.

See gh-31848
Closes gh-31859
---
 .../org/springframework/core/io/buffer/DefaultDataBuffer.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBuffer.java b/spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBuffer.java
index def3ccf39649..4456f975bd9e 100644
--- a/spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBuffer.java
+++ b/spring-core/src/main/java/org/springframework/core/io/buffer/DefaultDataBuffer.java
@@ -371,7 +371,7 @@ public DataBuffer split(int index) {
 				.slice();
 		this.writePosition = Math.max(this.writePosition, index) - index;
 		this.readPosition = Math.max(this.readPosition, index) - index;
-		capacity(this.byteBuffer.capacity());
+		this.capacity = this.byteBuffer.capacity();
 
 		return result;
 	}