  _bdf_set_default_spacing( bdf_font_t*     font,
                            bdf_options_t*  opts,
                            unsigned long   lineno )
  {
    size_t       len;
    char         name[256];
    _bdf_list_t  list;
    FT_Memory    memory;
    FT_Error     error = BDF_Err_Ok;


    if ( font == 0 || font->name == 0 || font->name[0] == 0 )
    {
      error = BDF_Err_Invalid_Argument;
      goto Exit;
    }

    memory = font->memory;

    _bdf_list_init( &list, memory );

    font->spacing = opts->font_spacing;

    len = ft_strlen( font->name ) + 1;
    /* Limit ourselves to 256 characters in the font name. */
    if ( len >= 256 )
    {
      FT_ERROR(( "_bdf_set_default_spacing: " ERRMSG7, lineno ));
      error = BDF_Err_Invalid_Argument;
      goto Exit;
    }

    FT_MEM_COPY( name, font->name, len );

    error = _bdf_list_split( &list, (char *)"-", name, len );
    if ( error )
      goto Fail;

    if ( list.used == 15 )
    {
      switch ( list.field[11][0] )
      {
      case 'C':
      case 'c':
        font->spacing = BDF_CHARCELL;
        break;
      case 'M':
      case 'm':
        font->spacing = BDF_MONOWIDTH;
        break;
      case 'P':
      case 'p':
        font->spacing = BDF_PROPORTIONAL;
        break;
      }
    }

  Fail:
    _bdf_list_done( &list );

  Exit:
    return error;
  }

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.