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ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

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Possible Null Pointer Dereference in ParserATNSimulator.java

### What happened? In file: [ParserATNSimulator.java](https://github.com/antlr/antlr4/blob/4.13.2/runtime/Java/src/org/antlr/v4/runtime/atn/ParserATNSimulator.java#L604), there is a potential case of null pointer dereference. In method `computeTargetState()` inside class `ParserATNSimulator`, there is a call to [predicateDFAState()](https://github.com/antlr/antlr4/blob/4.13.2/runtime/Java/src/org/antlr/v4/runtime/atn/ParserATNSimulator.java#L590). This method call...

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ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

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