From 4071b0fa29124e03174617b2c11e082f83bbc424 Mon Sep 17 00:00:00 2001
From: Aintripin <72869676+Aintripin@users.noreply.github.com>
Date: Mon, 12 Oct 2026 11:46:31 -0700
Subject: [PATCH] Fix crash when a crafting job completes with the crafting log
 enabled (#1698)

---
 .../CraftingCPUClusterFunctionalTest.java     | 53 ++++++++++++++++++-
 .../implementations/CraftingCPUCluster.java   |  2 +-
 2 files changed, 53 insertions(+), 2 deletions(-)

diff --git a/src/functionalTest/java/appeng/test/me/crafting/CraftingCPUClusterFunctionalTest.java b/src/functionalTest/java/appeng/test/me/crafting/CraftingCPUClusterFunctionalTest.java
index 5b5c8b136..0ee3a2879 100644
--- a/src/functionalTest/java/appeng/test/me/crafting/CraftingCPUClusterFunctionalTest.java
+++ b/src/functionalTest/java/appeng/test/me/crafting/CraftingCPUClusterFunctionalTest.java
@@ -24,9 +24,12 @@ import appeng.api.networking.crafting.ICraftingGrid;
 import appeng.api.networking.crafting.ICraftingMedium;
 import appeng.api.networking.crafting.ICraftingPatternDetails;
 import appeng.api.networking.energy.IEnergyGrid;
+import appeng.api.networking.security.BaseActionSource;
 import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IAEStack;
 import appeng.api.util.WorldCoord;
+import appeng.core.AEConfig;
+import appeng.core.features.AEFeature;
 import appeng.helpers.PatternHelper;
 import appeng.me.cache.CraftingGridCache;
 import appeng.me.cluster.implementations.CraftingCPUCluster;
@@ -169,10 +172,50 @@ public class CraftingCPUClusterFunctionalTest {
         assertEquals(2, cpu.core.dirtyNotifications, "Notifications outside the update must remain immediate");
     }
 
+    @Test
+    void craftingLogDoesNotBreakJobCompletion() {
+        cpu.prepare(pattern, 64, 128);
+        cpu.trackFinalOutput(64);
+        cpu.setStartItemCount(7);
+        final long[] reportedCount = { -1 };
+        cpu.addOnCompleteListener((output, count, elapsedTime) -> reportedCount[0] = count);
+        tick();
+
+        withCraftingLog(
+                () -> cpu.injectItems(
+                        AEItemStack.create(new ItemStack(Blocks.stone)).setStackSize(512),
+                        Actionable.MODULATE,
+                        new BaseActionSource()));
+
+        assertAll(
+                () -> assertTrue(cpu.completed()),
+                () -> assertEquals(512, reportedCount[0], "The crafting log must not change the reported output"));
+    }
+
+    @Test
+    void craftingLogDoesNotBreakFakeCraftingCompletion() {
+        cpu.prepare(pattern, 64, 128);
+        cpu.enableFakeCrafting(64);
+
+        withCraftingLog(this::tick);
+
+        assertTrue(cpu.completed());
+    }
+
     private void tick() {
         cpu.updateCraftingLogic(grid, energy, cache);
     }
 
+    private static void withCraftingLog(Runnable action) {
+        final boolean wasEnabled = AEConfig.instance.isFeatureEnabled(AEFeature.CraftingLog);
+        AEConfig.instance.featureFlags.add(AEFeature.CraftingLog);
+        try {
+            action.run();
+        } finally {
+            if (!wasEnabled) AEConfig.instance.featureFlags.remove(AEFeature.CraftingLog);
+        }
+    }
+
     private static ICraftingPatternDetails processingPattern() {
         final ItemStack encoded = AEApi.instance().definitions().items().encodedPattern().maybeStack(1).get();
         final NBTTagCompound tag = new NBTTagCompound();
@@ -207,8 +250,16 @@ public class CraftingCPUClusterFunctionalTest {
                     Actionable.MODULATE);
         }
 
-        private void enableFakeCrafting(int crafts) {
+        private void setStartItemCount(long count) {
+            startItemCount = count;
+        }
+
+        private void trackFinalOutput(int crafts) {
             finalOutput.init(AEItemStack.create(new ItemStack(Blocks.stone)).setStackSize(crafts * 8L));
+        }
+
+        private void enableFakeCrafting(int crafts) {
+            trackFinalOutput(crafts);
             finalOutput.setFakeCrafting();
         }
 
diff --git a/src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java b/src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java
index 03c1ab080..05ffd5c5c 100644
--- a/src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java
+++ b/src/main/java/appeng/me/cluster/implementations/CraftingCPUCluster.java
@@ -576,7 +576,7 @@ public class CraftingCPUCluster implements IAECluster, ICraftingCPU {
         }
 
         if (AELog.isCraftingLogEnabled()) {
-            final IAEStack<?> logStack = this.finalOutput.get();
+            final IAEStack<?> logStack = this.finalOutput.getOriginalOutput().copy();
             logStack.setStackSize(this.startItemCount);
             AELog.crafting(LOG_MARK_AS_COMPLETE, logStack);
         }