gcj and UDP datagrams under freebsd

Fri Apr 5 12:37:00 GMT 2002

 
Folks-
I wonder if anyone else has had a problem using UDP datagrams under
freebsd. I slurped the latest gcc stuff from CVS a couple of days
ago. I have two small programs that are attached below. They
compile using:
 gcj -o snd --main=snd snd.java -pthread
 gcj -o rcv --main=rcv rcv.java -pthread
just fine.
I run rcv -- which just sits there. But, when I run snd I get this:
% ./snd guns
assertion "!(addr & FLAGS)" failed: file "/home/mallman/GCC/libjava/java/lang/natObject.cc", line 772
Bus error (core dumped) 
This is on a freebsd 4.4 machine.
I tried to same thing on my redhat 6.2 laptop (same version of gcc
that I grabbed from CVS a couple days ago) and it all worked as I
had envisioned. (The difference is the I don't have to use
"-pthread" when compiling on the linux box.)
Anyone have a guess about what is going on? Any help would be
appreciated.
Thanks!
allman
--
Mark Allman -- BBN/NASA GRC -- http://roland.grc.nasa.gov/~mallman/
=============================================================================
import java.net.*;
import java.io.*;
class rcv
{
 public static void main (String [] args) throws SocketException, 
	IOException
 {
	DatagramSocket sock = new DatagramSocket (1234);
	byte[] buffer = new byte[256];
	DatagramPacket rpacket = new DatagramPacket (buffer,buffer.length);
	DatagramPacket spacket;
	String rcvd;
	String msg;
	sock.receive (rpacket);
	rcvd = new String (rpacket.getData());
	System.out.println ("RCVD: " + rcvd);
	msg = new String ("from receiver");
	buffer = msg.getBytes ();
	spacket = new DatagramPacket (buffer, buffer.length, 
				 rpacket.getAddress (), 
				 rpacket.getPort ());
	sock.send (spacket);
 }
}
=============================================================================
import java.net.*;
import java.io.*;
class snd
{
 public static void main (String [] args) throws SocketException, 
	IOException
 {
	DatagramSocket sock = new DatagramSocket ();
	byte[] buffer = new byte[256];
	String msg;
	DatagramPacket spacket;
	DatagramPacket rpacket;
	InetAddress address;
	String rcvd;
	if (args.length != 1)
	{
	 System.out.println("Usage: snd host");
	 return;
	}
	msg = new String ("from sender");
	buffer = msg.getBytes ();
	address = InetAddress.getByName (args[0]);
	spacket = new DatagramPacket (buffer, buffer.length, address, 1234);
	sock.send (spacket);
	rpacket = new DatagramPacket (buffer, buffer.length);
	sock.receive (rpacket);
	rcvd = new String (rpacket.getData ());
	System.out.println ("RCVD: " + rcvd);
 }
}
=============================================================================