double memory alignment problem??
- From: Wim Oudshoorn <woudshoo sctcorp com>
- To: orbit-list gnome org
- Subject: double memory alignment problem??
- Date: Tue, 12 Dec 2000 13:44:02 +0100
What is the status of the double problem?
In the archives I found that it was fixed
in the 0.5.3 version. But I encounter
the same?? problem.
SETUP:
Server side: echo-server
ORBit-0.5__1-win32
modified so it compiles
with WebObjects 3.5 on Windows NT. (i386)
Client 1: echo-client
Same libraries as the
server side.
Windows NT
Client 2: echo-client
ORBit-0.5.3
modified so it compiles on
OpenStep 4.2. (i386)
(Note however that the port
is far from complete!
I could not get the server
to run.)
Now on WinNT everything works fine.
The Server and client 1 that I compiled
as well as the precompiled server and client
that are contained in the ORBit-0.5__1-win32
package.
But the OpenStep client (2) has a problem
with the CORBA_double return value.
It returns garbage as you can see from to
the output (see bottom of the mail)
The problem is obvious, the lower four
bytes are zero.
However if I put a printf statement in the code, like:
if (i == 10) printf("\n");
in the echo-client.c main loop.
Everything works fine from the 10 iteration on.
My impression is, from reading previous mails
on the mailing list, that it has to do with
memory alignment.
Also it seems that the problem lies with the 0.5.3
client rather than the 0.5.1 server.
So I have a few questions:
Q1. Is this a known issue?
Q2. Is it already solved, or is someone working on it?
Q3. What is the status of ORBit2? And is this also
an issue with ORBit2?
Q4. If nobody is working on it, I could give it a try,
but I am new to ORBit and CORBA so any pointers
where to start are appreciated.
Greetings,
Wim Oudshoorn.
SAMPLE OUTPUT:
[[ First double, followd by hex-dump of the double]]
Message: [client] 4.27698e+86
Message: 00 00 00 00 1f 85 eb 51
Message: [client] 4.66726e-62
Message: 00 00 00 00 33 33 33 33
Message: [client] -1.10707e-234
Message: 00 00 00 00 f6 28 5c 8f
....
....
Message: 00 00 00 00 ae 47 e1 7a
Message: [client] -2.35343e-185
Message: 00 00 00 00 9a 99 99 99
[[ AFTER printf("\n"); ]]
Message: [client] 0.35
Message: 66 66 66 66 66 66 d6 3f
Message: [client] 0.98
Message: 5c 8f c2 f5 28 5c ef 3f
Message: [client] 0.92
...
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