From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter <peter.spamcatcher@rimuhosting.com>
Subject: Re: Java Problems
Date: Sat, 13 Aug 2005 09:29:39 +1200
Message-ID: <42FD14C3.9000203@rimuhosting.com>
References: <OF8DAF4393.0622A224-ON8525705B.004B18C0-8525705B.004B6D78@us.ibm.com>
	<42FD03F7.4080901@rimuhosting.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <42FD03F7.4080901@rimuhosting.com>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
Cc: xen-devel@lists.xensource.com, Reuben Kabel <kabel@us.ibm.com>
List-Id: xen-devel@lists.xenproject.org

Oh.  And to just simplify this test case a little more I bypass Java 
altogether and use this little C gem.  It also triggers the problem.

#include <stdio.h>
float s_i = 0.75;
void test(float i) {
         if(i!=s_i) {
                 printf("error\n");
         }
}
int main(char **args) {
         printf("Starting\n");
         long i=0;
         for (i = 0;i<100000000; i++) {
             test(s_i);
         }
         return 0;
     }

Starting
errorStarting
Starting
Starting
Starting
errorerrorerrorerrorStarting
errorStarting
errorStarting
Starting
Starting
Starting
errorerrorerrorStarting


Peter wrote:
> Hi.
> 
> I don't have a 2.0.7 to test on at the moment.  I will try again when I do.
> 
> I got rid of the object allocation inside the loop.  And I retested.  I 
> don't hit the problem with int's on the call stack.  I do hit the 
> problem with floats and doubles.
> 
> The problem is quite easily reproducible (for me).  Is someone there 
> with knowledge of register/stack handle able to take a look with gdb or 
> which ever tool you use?
> 
> Regards, Peter
> http://rimuhosting.com - Xen VPS Hosting
>