Re: orbit examples on FreeBSD

[Frank Rehberger <Frank Rehberger web de>]

Gernot Hueber wrote:

> Hello,
>
> I have tried to run the orbit examples on FreeBSD without success yet.
> Actually the server part is running whereas the client core dumps :-(
> Have a look at the gdb session appended. 

sorry, I never tested on BSD :/
Probably this relates to command
 fscanf (stream, "%as", &objref); 
in function "etk_import_object_from_stream()"

it seems, format '%as'  is not supported, in consequence returned string 
pointer is undefined.
The following is a fast hack to solve compatibility problems:

/**
*
*/
CORBA_Object
etk_import_object_from_stream (CORBA_ORB          orb,
                  FILE              *stream,
                  CORBA_Environment *ev)
{
   CORBA_Object obj = CORBA_OBJECT_NIL;
   gchar objref[(32*1024)+1];
  
   fscanf (stream, "%32768s", objref);  /* FIXME, handle input error */
  
   obj = (CORBA_Object) CORBA_ORB_string_to_object (orb,
                            objref,
                            ev);
   return obj;
}

Regards, Frank



> Any clues?
>
> Thanks in advance.
>
> Gernot
>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x280990fa in CORBA_ORB_string_to_object () from /usr/local/lib/ 
> libORBit-2.so.0
> (gdb) st
> Ambiguous command "st": stack, status, step, stepi, stepping, stop.
> (gdb) bt
> #0  0x280990fa in CORBA_ORB_string_to_object () from /usr/local/lib/ 
> libORBit-2.so.0
> #1  0x0804970c in etk_import_object_from_stream (orb=0x807e400,  
> stream=0x282b8220, ev=0xbfbfeb48)
>    at examples-toolkit.c:111
> #2  0x0804977d in etk_import_object_from_file (orb=0x807e400,  
> filename=0xbfbfeb78 "calculator.ref",
>    ev=0xbfbfeb48) at examples-toolkit.c:135
> #3  0x0804934a in main (argc=1, argv=0xbfbfebb8) at calculator-client. 
> c:120
> #4  0x08049092 in _start ()
> (gdb) up
> #1  0x0804970c in etk_import_object_from_stream (orb=0x807e400,  
> stream=0x282b8220, ev=0xbfbfeb48)
>    at examples-toolkit.c:111
> 111             obj = (CORBA_Object) CORBA_ORB_string_to_object (orb,
> (gdb) list
> 106             CORBA_Object obj = CORBA_OBJECT_NIL;
> 107             gchar *objref=NULL;
> 108
> 109             fscanf (stream, "%as", &objref);  /* FIXME, handle  
> input error */
> 110
> 111             obj = (CORBA_Object) CORBA_ORB_string_to_object (orb,
> 112                                                               objref,
> 113                                                              ev);
> 114             free (objref);
> 115
> (gdb) print *orb
> $1 = <incomplete type>
> (gdb) print orb
> $2 = 0x807e400
> (gdb) print objref
> $3 = (gchar *) 0x0
> (gdb) print *objref
> Error accessing memory address 0x0: Bad address.
> (gdb) print *ev
> $4 = {_id = 0x0, _major = 0, _any = {_type = 0x0, _value = 0x0,  
> _release = 0 '\0'}}
> (gdb)