26 lines
1.2 KiB
Diff
26 lines
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <jahnke.nassim@gmail.com>
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Date: Tue, 11 Jan 2022 19:31:46 +0100
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Subject: [PATCH] Fix int overflow in chunk range check
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diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
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index 79dbffe899dd7e31af648302c557e2993f170623..6a035b173cf0d288b2912f568078fede45d138f2 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
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@@ -622,9 +622,11 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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public static boolean isChunkInRange(int x1, int z1, int x2, int z2, int distance) {
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int j1 = Math.max(0, Math.abs(x1 - x2) - 1);
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int k1 = Math.max(0, Math.abs(z1 - z2) - 1);
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- int l1 = Math.max(0, Math.max(j1, k1) - 1);
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- int i2 = Math.min(j1, k1);
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- int j2 = i2 * i2 + l1 * l1;
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+ // Paper start - fix integer overflow
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+ long l1 = Math.max(0, Math.max(j1, k1) - 1);
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+ long i2 = Math.min(j1, k1);
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+ long j2 = i2 * i2 + l1 * l1;
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+ // Paper end
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int k2 = distance - 1;
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int l2 = k2 * k2;
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