Name: siR10004 Date: 02/10/2004



The following two JDK classes
  javax.crypto.SunJCE_c
  javax.crypto.SunJCE_e
cause 'Constructor.getTypeParameters()' failure with 'GenericSignatureFormatError'
exception thrown.

To reproduce, run the following script
------------------------------------------------------
#!/bin/sh
set -x

JH=/home/isl/space/Refs/jdks/jdk1.5.0-b37/solaris-sparc

cat > Probe.java << EOF
import java.lang.reflect.*;
public class Probe
{
    public static void main (String[] args) throws Throwable
    {
        Class c = Class.forName(args[0], false, null);
        Constructor[] ctors = c.getDeclaredConstructors();
        if (ctors != null)
            for (int i = 0; i < ctors.length; i++)
                    ctors[i].getTypeParameters();
    }
}
EOF

$JH/bin/javac Probe.java
$JH/bin/java -cp . Probe javax.crypto.SunJCE_c
$JH/bin/java -cp . Probe javax.crypto.SunJCE_e
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Here is the script output:
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+ /home/isl/space/Refs/jdks/jdk1.5.0-b37/solaris-sparc/bin/java -cp . Probe javax.crypto.SunJCE_c
Exception in thread "main" java.lang.reflect.GenericSignatureFormatError
        at sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:103)
        at sun.reflect.generics.parser.SignatureParser.parseFormalParameters(SignatureParser.java:428)
        at sun.reflect.generics.parser.SignatureParser.parseMethodTypeSignature(SignatureParser.java:420)
        at sun.reflect.generics.parser.SignatureParser.parseMethodSig(SignatureParser.java:141)
        at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:37)
        at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:25)
        at sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:56)
        at sun.reflect.generics.repository.GenericDeclRepository.<init>(GenericDeclRepository.java:30)
        at sun.reflect.generics.repository.ConstructorRepository.<init>(ConstructorRepository.java:33)
        at sun.reflect.generics.repository.ConstructorRepository.make(ConstructorRepository.java:51)
        at java.lang.reflect.Constructor.getGenericInfo(Constructor.java:70)
        at java.lang.reflect.Constructor.getTypeParameters(Constructor.java:180)
        at Probe.main(Probe.java:10)
+ /home/isl/space/Refs/jdks/jdk1.5.0-b37/solaris-sparc/bin/java -cp . Probe javax.crypto.SunJCE_e
Exception in thread "main" java.lang.reflect.GenericSignatureFormatError
        at sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:103)
        at sun.reflect.generics.parser.SignatureParser.parseFormalParameters(SignatureParser.java:428)
        at sun.reflect.generics.parser.SignatureParser.parseMethodTypeSignature(SignatureParser.java:420)
        at sun.reflect.generics.parser.SignatureParser.parseMethodSig(SignatureParser.java:141)
        at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:37)
        at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:25)
        at sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:56)
        at sun.reflect.generics.repository.GenericDeclRepository.<init>(GenericDeclRepository.java:30)
        at sun.reflect.generics.repository.ConstructorRepository.<init>(ConstructorRepository.java:33)
        at sun.reflect.generics.repository.ConstructorRepository.make(ConstructorRepository.java:51)
        at java.lang.reflect.Constructor.getGenericInfo(Constructor.java:70)
        at java.lang.reflect.Constructor.getTypeParameters(Constructor.java:180)
        at Probe.main(Probe.java:10)
------------------------------------------------------

Perhaps the cause of these failures is bad 'Signature' attributes.
Constructor of class 'javax.crypto.SunJCE_c' has this attribute
with value 'f' and constructor of class 'javax.crypto.SunJCE_e'
has 'Signature' attribute with value 'java/lang/Exception'.
Both classes have 45:3 classfile version.

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