[Sablevm-bugs] [ sablevm-Bugs-434181 ] problem with long and the % operator

[<no...@so...>]

Bugs item #434181, was opened at 2001-06-18 07:39
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=105523&aid=434181&group_id=5523

Category: Execution Problem
Group: SableVM
Status: Open
Resolution: None
>Priority: 6
Submitted By: Pascal Grange (pascal)
>Assigned to: Etienne M. Gagnon (egagnon)
Summary: problem with long and the % operator

Initial Comment:
This class make a java.lang.NullPointerException when
run with sablevm :


public class Test{

  public static void main(String args[]){
    long i = 1;

    i = i % 2;
  }
}

Compiling and running :
$> sablevm [...] Test

java.lang.NullPointerException
        at Test.main ([Ljava/lang/String;)V (in file
Test.java at line 3)
        at org/sablevm/vm/Startup.main
(Ljava/lang/String;[Ljava/lang/String;)V (unknown)
        at org/sablevm/vm/Startup.main
([Ljava/lang/String;)V (in file Startup.java at line
18)


Note that with this line :
i = (long) ((int)i % 2);
instead of :
i = i % 2;
all goes well.


----------------------------------------------------------------------

Comment By: Pascal Grange (pascal)
Date: 2001-06-25 02:44

Message:
Logged In: YES 
user_id=5113

NOTE that this bug was observed on the sablevm-0.1.6
release, on a bi-pentiumIII machine under redhat 6.2 with a
2.2.14 linux kernel.
This bug was observed for the lrem instruction and the ldiv
instruction too, but not for ladd or lsub.
Finally, note that it appears only when using the
inlined-threaded-interpreter, but not with the direct or
indirect-threaded-interpreter.

----------------------------------------------------------------------

You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=105523&aid=434181&group_id=5523