FULL PRODUCT VERSION :
java version "1.6.0_23"
Java(TM) SE Runtime Environment (build 1.6.0_23-b05)
Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux filao24.intra.cea.fr 2.6.18-238.1.1.el5 #1 SMP Tue Jan 4 13:32:19 EST 2011 x86_64 x86_64 x86_64 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
When generating a C header using javah for a class (let us call it MyClass) containing native methods, I have problem in the following case:
- two native methods have the same name with different signatures in such a way that the associated C functions have "long" names containing the method signature in order to obtain two different names.
- one of the argument of these methods is an inner enum (let us call it MyEnum) of the class containing these native methods in such a way that in the methods signature one have MyClass$MyEnum. Following JNI specs (http://download.oracle.com/javase/6/docs/technotes/guides/jni/spec/design.html#wp615), this should be translated into MyClass_00024MyEnum in the C header but it is not, I have only MyClass_MyEnum in such a way that when trying to use these native methods in a java context, I obtain a java.lang.UnsatisfiedLinkError Exception. When manually renaming the C functions with MyClass_00024MyEnum, everything works fine.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- create two native methods in a class with the same name but different signatures. One of the argument should be an enum embedded in the class.
- generate the C header using javah

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
the C header generated by javah should contain C functions with correct (according to the JNI specs) names (MyClass_00024MyEnum)

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class mypackage_MyClass */

#ifndef _Included_mypackage_MyClass
#define _Included_mypackage_MyClass
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class: mypackage_MyClass
 * Method: method
 * Signature: ([ILmypackage/MyClass/MyEnum;)V
 */
JNIEXPORT void JNICALL Java_mypackage_MyClass_method___3ILmypackage_MyClass_00024MyEnum_2
  (JNIEnv *, jobject, jintArray, jobject);

/*
 * Class: mypackage_MyClass
 * Method: method
 * Signature: ([DLmypackage/MyClass/MyEnum;)V
 */
JNIEXPORT void JNICALL Java_mypackage_MyClass_method___3DLmypackage_MyClass_00024MyEnum_2
  (JNIEnv *, jobject, jdoubleArray, jobject);

#ifdef __cplusplus
}
#endif
#endif
/* Header for class mypackage_MyClass_MyEnum */

#ifndef _Included_mypackage_MyClass_MyEnum
#define _Included_mypackage_MyClass_MyEnum
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
#endif

ACTUAL -
the C header generated by javah contain C functions with incorrect names (MyClass_MyEnum instead of MyClass_00024MyEnum):

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class mypackage_MyClass */

#ifndef _Included_mypackage_MyClass
#define _Included_mypackage_MyClass
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class: mypackage_MyClass
 * Method: method
 * Signature: ([ILmypackage/MyClass/MyEnum;)V
 */
JNIEXPORT void JNICALL Java_mypackage_MyClass_method___3ILmypackage_MyClass_MyEnum_2
  (JNIEnv *, jobject, jintArray, jobject);

/*
 * Class: mypackage_MyClass
 * Method: method
 * Signature: ([DLmypackage/MyClass/MyEnum;)V
 */
JNIEXPORT void JNICALL Java_mypackage_MyClass_method___3DLmypackage_MyClass_MyEnum_2
  (JNIEnv *, jobject, jdoubleArray, jobject);

#ifdef __cplusplus
}
#endif
#endif
/* Header for class mypackage_MyClass_MyEnum */

#ifndef _Included_mypackage_MyClass_MyEnum
#define _Included_mypackage_MyClass_MyEnum
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
#endif


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class MyClass {

    public enum MyEnum {
        MyEnum1,
        MyEnum2
    }

    public MyClass() {
    }

    public native void method(int[] array, MyEnum myEnum);
    public native void method(double[] array, MyEnum myEnum);

}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
manually renaming the C method or moving MyEnum out of MyClass