OpenEuphoria

Re: Euphoria v4.03 bug in "append" ?

• Posted by petelomax Jan 23, 2012
• 1274 views

Of course I've known this for a while, but there are a large number of builtins for which this makes no sense:

    open 
    allocate (/allocate_string) 
    call_back 
    sort (/custom_sort) 
    equal 
    compare 
    find 
    match 
    length 
    remainder 
    floor 
    where 
    rand 
    and_bits 
    or_bits 
    xor_bits 
    not_bits 
    time 
    power 
    log 
    instance 
    cos 
    sin 
    sqrt 
    tan 
    arctan 
    append 
    prepend 
    repeat 
    get_position 
    peek 
    peek4s 
    peek4u 
    define_c_func 
    define_c_proc 
    routine_id 
    platform 
    arccos 
    arcsin 
    define_c_var 
    open_dll 
    current_dir 
    peek_string 
    sprintf 
    sprint 
    command_line 
    date 
    db_table_list 
    reverse 
    get_screen_char 
    db_record_data 
    db_record_key 
    dir 
    getenv 
    upper 
    lower 
    peek2s 
    peek2u 

The top four are pretty bad programming mistakes:
opening a file you cannot read, write, or close
allocating memory you cannot use or free
defining a call_back you cannot call
sorting a table then throwing the sorted result away and leaving the original unsorted

Pete

EDIT: Perhaps it should be illegal to ignore the result of a function call if that function has no side-effects.