A DESCRIPTION OF THE PROBLEM :
AttrContext's toString() method throws a NullPointerException when scope is null. Cannot invoke "Object.toString()" because "this.scope" is null

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Waiting for classes to be compiled: public class test{ }
2. compiler parameter：String [] args ={"-d","F:/compile/test/out","F:/compile/test/Test.java","--release","17"} ；
start calling： javac.main(String[] args)

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No exception thrown
ACTUAL -
java.lang.NullPointerException: Cannot invoke "Object.toString()" because "this.scope" is null
at jdk.compiler/com.sun.tools.javac.comp.AttrContext.toString(AttrContext.java:186)

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Waiting for classes to be compiled: public class test{ }
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FREQUENCY : always