error: 'jvariant::jvariant(jbyte)' cannot be overloaded

Tue Jul 21 07:17:00 GMT 2009

On Sun, Jul 19, 2009 at 5:16 PM, Andrew Haley<aph@redhat.com> wrote:
> On 07/19/2009 09:17 AM, Florian Weimer wrote:
>> * Andrew Haley:
>>>>> On 07/19/2009 07:02 AM, Florian Weimer wrote:
>>>> * Mathieu Malaterre:
>>>>>>>>>   I am trying to compile VTK using gcj and I am getting those compiler
>>>>> error, could someone please let me know if the code is legal (should
>>>>> compile) or not:
>>>> This is legal per Sun's JNI specficiation: jboolean and jbyte are
>>>> distinct types because there signedness differs:
>>>>>>>> <http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/types.html#wp198>
>>>>>>>> It's a bug in GCC.
>>> I didn't see the original message to which this is replying.
>>>> It's about C++ code which contains a function overloaded on jbyte and
>> jboolean.  This fails with GCJ because they are typedef'ed to the same
>> type.
>>>>> If you can make a test case I'll see if the bug can be fixed.
>>>> Compare the table I referenced with these pieces from jni_md.h:
>>>> | typedef int    jbyte  __attribute__((__mode__(__QI__)));
>> | typedef int    jshort __attribute__((__mode__(__HI__)));
>> | typedef int    jint   __attribute__((__mode__(__SI__)));
>> | typedef int    jlong  __attribute__((__mode__(__DI__)));
>> | typedef int    jboolean __attribute__((__mode__(__QI__)));
>> | typedef unsigned short jchar __attribute__((__mode__(__HI__)));
>> | typedef float  jfloat;
>> | typedef double jdouble;
>> | typedef jint jsize;
>>>> | typedef int8_t jbyte;
>> | typedef int16_t jshort;
>> | typedef int32_t jint;
>> | typedef int64_t jlong;
>> | typedef float jfloat;
>> | typedef double jdouble;
>> | typedef jint jsize;
>> | typedef int8_t jboolean;
>> | typedef uint16_t jchar;
>>>> jboolean is signed, but Sun's spec says it should be unsigned.
>> OK.  I can fix it, but it's an ABI-incompatible change.  There's no
> way this fix could be applied to any existing releases, only gcc
> 4.5.

Excellent ! Is there a bug entry so I can follow the process ?
Thanks,
-- 
Mathieu