Nigel Wade <>
Tue, 08 Aug 2006 09:47:43 +0100
<eb9j3f$2a0$> wrote:

Hi All,

I have wrote an JNI interface for a C library. Everything works just
fine in 32bit machines/virtual machines.
Now I'm trying to reproduce the results with the amd64 Sun JVM (on an
amd64 machine). I recompiled the library on the target machine and got
no errors or warnings, but when I run the code I got the following:

# An unexpected error has been detected by HotSpot Virtual Machine:
# SIGSEGV (0xb) at pc=0x00002aaafb10957e, pid=5819, tid=46912501787360
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.5.0_06-b05 mixed mode)
# Problematic frame:
# C [] umfpack_di_free_symbolic+0x1e
# An error report file with more information is saved as
# If you would like to submit a bug report, please visit:

Should I use special compilation flags for the amd64 version?
Any ideas?

Thank you in advance!

It's most likely that your C library is not 64bit clean.

Check your assumptions regarding the size of C variables, especially pointers,
they might well be wrong.

Nigel Wade, System Administrator, Space Plasma Physics Group,
            University of Leicester, Leicester, LE1 7RH, UK
E-mail :
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555

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