Peter Burka created BCEL-290:
--------------------------------
Summary: Verifier reports 'Constant pool at index 0 is null' for invokedynamic
Key: BCEL-290
URL: https://issues.apache.org/jira/browse/BCEL-290
Project: Commons BCEL
Issue Type: Bug
Affects Versions: 6.0
Reporter: Peter Burka
When the BCEL Verifier encounters an invokedynamic bytecode (such as those generated by javac
for lambdas), it throws a org.apache.bcel.classfile.ClassFormatException in Pass3a reporting
that "Constant pool at index 0 is null."
Test case:
{noformat}
public class Bug3 {
public Runnable foo() {
return () -> {};
}
}
{noformat}
Output:
{noformat}
JustIce by Enver Haase, (C) 2001-2002.
<http://bcel.sourceforge.net>
<http://commons.apache.org/bcel>
Now verifying: Bug3
Pass 1:
VERIFIED_OK
Passed verification.
Pass 2:
VERIFIED_OK
Passed verification.
Pass 3a, method number 0 ['public void <init>()']:
VERIFIED_OK
Passed verification.
Pass 3b, method number 0 ['public void <init>()']:
VERIFIED_OK
Passed verification.
Exception in thread "main" org.apache.bcel.classfile.ClassFormatException: Constant pool at
index 0 is null.
at org.apache.bcel.classfile.ConstantPool.getConstant(ConstantPool.java:258)
at org.apache.bcel.classfile.ConstantPool.getConstantString(ConstantPool.java:293)
at org.apache.bcel.generic.FieldOrMethod.getReferenceType(FieldOrMethod.java:116)
at org.apache.bcel.generic.FieldOrMethod.getLoadClassType(FieldOrMethod.java:133)
at org.apache.bcel.verifier.statics.Pass3aVerifier$InstOperandConstraintVisitor.visitLoadClass(Pass3aVerifier.java:521)
at org.apache.bcel.generic.INVOKEDYNAMIC.accept(INVOKEDYNAMIC.java:114)
at org.apache.bcel.generic.InstructionHandle.accept(InstructionHandle.java:302)
at org.apache.bcel.verifier.statics.Pass3aVerifier.pass3StaticInstructionOperandsChecks(Pass3aVerifier.java:443)
at org.apache.bcel.verifier.statics.Pass3aVerifier.do_verify(Pass3aVerifier.java:208)
at org.apache.bcel.verifier.PassVerifier.verify(PassVerifier.java:71)
at org.apache.bcel.verifier.Verifier.doPass3a(Verifier.java:89)
at org.apache.bcel.verifier.Verifier.main(Verifier.java:216)
{noformat}
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