jvm core dump with jni c++ on AIX only

[Mike]

I've been getting a JVM core dump when linking with jni code. Here is
the scenario:

1)The probem occurs only on AIX 4.3 and not on HPUX, Linux or Sun
2)The jni code executes fine inside the native C modules BUT as soon
as a function inside a cpp module is called, the core dump occurs
immediately.
3)When the code is executed under the same scenario (with the shared
lib containing the exact same code objects) but with no connection to
the JVM (only as native code) - there is no problem.

Any suggestions / ideas will be appreciated.

thanks,
-Mike