Java HotSpot Virtual Machine

Hi,

I am trying to create a 64bit version of yaz4j and so far I am unable to get this to work.
I have managed to build a dll but any calls to the functions crashes the JVM.

I have previously built yaz4j for Windows 32bit/Mac 32bit and 64bit/Linux so just followed the same approach to get
this running on Windows 64bit. Currently I am using 64bit gcc v4.5.3 installed via cygwin. All other
dependent dlls are 64bit.

Reading a few forum posts, the suggestion is that this is caused by an exception being thrown in native code and the JVM not knowing what to do with it.
The yaz4j code is C so there are no exceptions being thrown.

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (os_windows_x86.cpp:149), pid=5736, tid=9928
# guarantee(result == EXCEPTION_CONTINUE_EXECUTION) failed: Unexpected result from topLevelExceptionFilter
#
# JRE version: 6.0_32-b05
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.7-b02 mixed mode windows-amd64 compressed oops)
# An error report file with more information is saved as:
# C:\Y\2\hs_err_pid5628.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Looking at the pid file:

--------------- T H R E A D ---------------

Current thread (0x00000000001db800): JavaThread "main" [_thread_in_native, id=9928, stack(0x0000000002020000,0x0000000002120000)]

Stack: [0x0000000002020000,0x0000000002120000]
[error occurred during error reporting (printing stack bounds), id 0xe0000000]


[error occurred during error reporting (printing native stack), id 0xe0000000]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.yaz4j.jni.yaz4jlibJNI.ZOOM_connection_create(J)J+0
j org.yaz4j.jni.yaz4jlib.ZOOM_connection_create(Lorg/yaz4j/jni/SWIGTYPE_p_ZOOM_options_p;)Lorg/yaz4j/jni/SWIGTYPE_p_ZOOM_connection_p;+4
j org.yaz4j.Connection.<init>(Ljava/lang/String;I)V+26
j Yaz4J_Test2.Connect(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)I+44
j Yaz4J_Test2.main([Ljava/lang/String;)V+52
v ~StubRoutines::call_stub

--------------- T H R E A D ---------------

If anyone has any suggestions, it would be appreciated.

Dave