bdb help

Hello,

I am trying to debug a simple scheme pgm with bdb; the program has a main
function as its entry point. Here is the debugging session:

gdw@gdwxubuntu:~/Documents/AltisServer/server/tests/005/bin$ bdb main
------------------------------------------------------------------------------
Bdb (v1.5) (level b)                                   ("`-/")_.-'"``-._
the Bigloo debugger                                     . . `; -._    )-;-,_`)
vendredi 27 juin 2014, 13:20:12 (UTC+0200)              v   '  _  )`-.\  ``-'
Manuel Serrano                                        _.- _..-_/ / ((.'
email:                                              ((,.-'   ((,/
[email protected]
------------------------------------------------------------------------------
                         *** THIS IS AN ALPHA RELEASE ***
If it fails, if it does not show accurate informations, please, be tolerant.
------------------------------------------------------------------------------

(bdb) b main
integer -1 out of range
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
(bdb) b log
Function "main" not defined.
Make breakpoint pending on future shared library load? (y or [n]) [answered N;
input not from terminal]
(bdb) r
Function "bigloo_abort" not defined.
warning: GDB: Failed to set controlling terminal: Opération non permise
*** ERROR:>=:
not a number -- #unspecified
Starting program: /home/gdw/Documents/AltisServer/server/tests/005/bin/main
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Inferior 1 (process 10410) exited with code 01]
(bdb)

Bdb does not stop on any breakpoint, and I don't know why...

Any help will be greatly appreciated!

Thank you in advance

Guilhem