Problem in SourceCodeChange class

[megymj]

Hello.

When comparing the old/new code of react-native and neo4j GitHub open source project using the build output of IJM,
I got the following result:

I used main branch of IJM and commit id is as follows(most recent commit)

• d060a6b

The jar files I used are as follows:

• at.aau.softwaredynamics.runner-1.0-SNAPSHOT-jar-with-dependencies.jar
• core-2.1.0-SNAPSHOT.jar
• gen.jdt-2.1.0-SNAPSHOT.jar

To solve this problem, I first increased the max heap size of the server to 28G, but the error still occurred. And as a result of debugging in IntelliJ, I confirmed that the size of the ArrayList exceeded 10 million.

The old/new file I used is as follows.

neo4j

• old code: https://github.com/neo4j/neo4j/blob/4376a9cf37f745f6e15872d5d7c96af180fb85f1/community/consistency-check/src/main/java/org/neo4j/consistency/checker/IndexChecker.java
• new code: https://github.com/neo4j/neo4j/blob/2dd6be5cfbfff28cf0311aaa75a7ed87e1b1ded8/community/consistency-check/src/main/java/org/neo4j/consistency/checker/IndexChecker.java

react-native

• old code: https://github.com/facebook/react-native/blob/eb7e89e2864e941b4a21d55a7403a6028e9a26a2/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java
• new code: https://github.com/facebook/react-native/blob/13f100f788063be2a30109c3f7fee386cb766ec4/packages/rn-tester/android/app/src/main/java/com/facebook/react/uiapp/RNTesterApplication.java