Re: ORBacus: Had someone got such error before?

Hi Vladmir,

On Wed, Dec 01, 2004 at 01:25:31PM +0100, Vladimir Romanovski wrote:
> Hi!
> 
> We are using ORBacus 4.0.5 with JTC 2.0 on Red Hat Linux.
> Our server crashed in InputStreamImpl::read_string() .
> The gdb analysis showed us that coming in stream has an error:
> 
> (gdb) x/14c 0x8342344
> 0x8342344: -1 'Ъ' -1 'Ъ' -1 'Ъ' -1 'Ъ' 103 'g' 97 'a' 108 'l' 108 'l'
> 0x834234c: 109 'm' 97 'a' 110 'n' 110 'n' 100 'd' 0 '\0'
> 
> The string 'gallmannd' is preciding with -1 . As a result
> InputStreamImpl::read_string() crashed trying to interpret that -1 as a 
> lenght
> of the string.
> 
> We get such crashes very seldom. Did anyone get the same problem before?
> How to reproduce that error? How to make CORBA client send such error 
> stream?
> 
> Many thanks!
> V.Romanovski

In CORBA as you know, a string is marshaled as a ULong followed by that
number of octets.  In your case, the string gallmannd should be prefixed
with the number 10.  Why it is set to 0xffffffff I don't know.  Are you
using Orbacus as both a client and a server?  If so then I'd suggest
putting a breakpoint in the OutputStreamImpl::write_string() method to
see what it actually prefixes the string with before transmission.  This
might give you a clue as to what is taking place.  Class OutputStreamImpl 
is found in Stream.cpp located in <ORBACUS_SRC>/ob/src/library/

Cheers.

-- 
Dion Picco, Software Engineer
IONA Technologies Inc.
Team Orbacus - Your CORBA Source
mailto:[email protected]
http://www.orbacus.com
_______________________________________________
OB-Users Mailing List - [email protected]
http://mail.ooc.nf.ca/mailman/listinfo/ob-users
Visit our support FAQ before you send a message.
http://www.orbacus.com/faq/support.html