dcmaf commented on issue #6422:
URL:
https://github.com/apache/incubator-kie-drools/issues/6422#issuecomment-3192958947
Moving the workaround to removeDormantTuple also fixes the case we saw with
logical facts:
```java
public void removeDormantTuple(RuleTerminalNodeLeftTuple tuple) {
if (DEBUG_DORMANT_TUPLE) {
if (!tuple.isDormant()) {
throw new IllegalStateException();
}
}
if (dormantMatches.contains(tuple))
dormantMatches.remove(tuple);
else
log.warn("removeDormantTuple: Tuple not found on dormant list:
{}", tuple);
if (DEBUG_DORMANT_TUPLE) {
tuple.setDormant(false);
}
}
```
Here is a sample stack trace for the logical fact case:
```
Caused by: java.lang.NullPointerException: Cannot invoke
"org.drools.core.util.DoubleLinkedEntry.setNext(org.drools.core.util.SingleLinkedEntry)"
because the return value of
"org.drools.core.util.DoubleLinkedEntry.getPrevious()" is null
at org.drools.core.util.LinkedList.remove(LinkedList.java:178)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.RuleExecutor.removeDormantTuple(RuleExecutor.java:318)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.PhreakRuleTerminalNode.doLeftDelete(PhreakRuleTerminalNode.java:270)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.PhreakRuleTerminalNode.doLeftDeletes(PhreakRuleTerminalNode.java:254)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.PhreakRuleTerminalNode.doNode(PhreakRuleTerminalNode.java:52)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:335)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:189)
~[drools-core-10.1.0-20250815.jar:10.1.0]
at
org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:147)
~[drools-core-10.1.0-20250815.jar:10.1.0]
```
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