From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Fri, 17 Mar 2023 15:57:08 +0800
Subject: [PATCH] Fix update suppression crash


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 4119b5248c7fca37a59ee81d0ce4e7a184cc0f0a..74e223322b7ad7485164bc3671dcb98cbe23539c 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1552,7 +1552,13 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
             try {
                 worldserver.timings.doTick.startTiming(); // Spigot
-                worldserver.tick(shouldKeepTicking);
+                // Leaves start
+                try {
+                    worldserver.tick(shouldKeepTicking);
+                } catch (top.leavesmc.leaves.util.UpdateSuppressionException e) {
+                    top.leavesmc.leaves.LeavesLogger.LOGGER.info("An update suppression processed");
+                }
+                // Leaves end
                 // Paper start
                 for (final io.papermc.paper.chunk.SingleThreadChunkRegionManager regionManager : worldserver.getChunkSource().chunkMap.regionManagers) {
                     regionManager.recalculateRegions();
diff --git a/src/main/java/net/minecraft/world/level/redstone/NeighborUpdater.java b/src/main/java/net/minecraft/world/level/redstone/NeighborUpdater.java
index 19faa8f5f891c1ffbed0af8391dee8202433c447..0f8d5495f9f7306f3267a0741cb6a1a6d106c38e 100644
--- a/src/main/java/net/minecraft/world/level/redstone/NeighborUpdater.java
+++ b/src/main/java/net/minecraft/world/level/redstone/NeighborUpdater.java
@@ -66,9 +66,17 @@ public interface NeighborUpdater {
             state.neighborChanged(world, pos, sourceBlock, sourcePos, notify);
             // Spigot Start
         } catch (StackOverflowError ex) {
+            // Leaves start - fix update suppression crash
+            if (top.leavesmc.leaves.LeavesConfig.updateSuppressionCrashFix) {
+                throw new top.leavesmc.leaves.util.UpdateSuppressionException();
+            }
             world.lastPhysicsProblem = new BlockPos(pos);
             // Spigot End
         } catch (Throwable throwable) {
+            if (top.leavesmc.leaves.LeavesConfig.updateSuppressionCrashFix) {
+                throw new top.leavesmc.leaves.util.UpdateSuppressionException();
+            }
+            // Leaves end - fix update suppression crash
             CrashReport crashreport = CrashReport.forThrowable(throwable, "Exception while updating neighbours");
             CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Block being updated");
 
diff --git a/src/main/java/top/leavesmc/leaves/LeavesConfig.java b/src/main/java/top/leavesmc/leaves/LeavesConfig.java
index 2c75585014ffecf3d07d5a9a507e4d7d55b7bf6c..7619428fbc95484f6251b34dd4bd1ab82cf2e341 100644
--- a/src/main/java/top/leavesmc/leaves/LeavesConfig.java
+++ b/src/main/java/top/leavesmc/leaves/LeavesConfig.java
@@ -524,6 +524,11 @@ public final class LeavesConfig {
         }
     }
 
+    public static boolean updateSuppressionCrashFix = true;
+    private static void updateSuppressionCrashFix() {
+        updateSuppressionCrashFix = getBoolean("settings.modify.fix-update-suppression-crash", updateSuppressionCrashFix);
+    }
+
     public static final class WorldConfig {
 
         public final String worldName;
diff --git a/src/main/java/top/leavesmc/leaves/util/UpdateSuppressionException.java b/src/main/java/top/leavesmc/leaves/util/UpdateSuppressionException.java
new file mode 100644
index 0000000000000000000000000000000000000000..fa4c91f4ba9a8eab4fdea97737ed778af46518dc
--- /dev/null
+++ b/src/main/java/top/leavesmc/leaves/util/UpdateSuppressionException.java
@@ -0,0 +1,7 @@
+package top.leavesmc.leaves.util;
+
+public class UpdateSuppressionException extends RuntimeException {
+    public UpdateSuppressionException() {
+        super("Update suppression");
+    }
+}