[Bug 13294] New: darwin-debug doesn't seem to work

http://llvm.org/bugs/show_bug.cgi?id=13294

             Bug #: 13294
           Summary: darwin-debug doesn't seem to work
           Product: lldb
           Version: unspecified
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
        AssignedTo: lldb-dev@cs.uiuc.edu
        ReportedBy: thelastmammoth@gmail.com
    Classification: Unclassified

I built lldb from the svn using the instructions provided.
I tried the example:
darwin-debug --arch=i386 -- /bin/ls -al /tmp
but it keeps throwing the same help message whichever the arguments (except
when i try to input an inexistant architecture):

NAME
    darwin-debug -- posix spawn a process that is stopped at the entry point
                    for debugging.
etc...