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Re: gcj on Nexenta OS


Khaled Mohammed wrote:
Hi,

I am using the Alpha 6 version of Nexenta and the following gcj version:
khaled@myhost:~/java.src$ gcj --version
gcj (GCC) 4.1.0 (GNU_OpenSolaris 4.1.0-1nexenta8)

I have tried the following simple example:
import java.io.*;

public class HelloWorld {
       public static void main(String [] args) {
               System.out.println("Hello " + args[0]);
       }
}

Example is compiled using:
khaled@myhost:~/java.src$ gcj -g HelloWorld.java -o hello --main=HelloWorld


The example compiles without any error both to bytecode and native binary.

bytecode seems to run fine under sun jre but the native code crashes.
Here is the output under gdb:

khaled@myhost:~/java.src$ gdb hello
(gdb) run khaled
Starting program: /export/home/khaled/java.src/hello khaled
warning: Lowest section in /lib/libpthread.so.1 is .dynamic at 00000074
warning: Lowest section in /lib/librt.so.1 is .dynamic at 00000074

Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()

I would appreciate any advice on debugging this problem.

You don't say what architecture this is running on . It would be helpful to know that. Also it would be nice to have a back trace from the failure point.

It looks like you did something similar to making a call through a NULL function pointer.

I don't want to sound discouraging, but I don't think much libgcj porting work has been done for Nexenta. So if you want to get it working, you may be spending a lot of quality time with gdb. Also I would not rule out problems with the C library or linker as causes. But really from the information you gave it is very difficult to say what is wrong.


Thanks,


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