Re: blob in embedded c code

Apparently yes :-(

Thanks, Michal

On Wed, Jan 11, 2012 at 12:58 PM, Mike Aubury <[email protected]> wrote:
> Ouch...
>
> Thats is *bad* 4gl - bad bad nasty evil 4gl...
> Try that same program with Informix 4gl rds and you'll helpfully get :
>
>          FORMS statement error number -1326
>          An array variable has been referenced outside of its specified
>          dimensions.
>
>
> Informix 4GL Arrays are ALWAYS from *1*
> The chances are you are overwriting another completely different variable
> when you set a value at index '0', but the C compiler version of informix
> will happily let you...
> (As will C)
>
> Rewrite your 4gl ASAP - it *is* wrong..
>
>
>
> On 11 January 2012 11:51, Michal Hajek <[email protected]> wrote:
>>
>> On Wed, Jan 11, 2012 at 11:37 AM, Mike Aubury <[email protected]>
>> wrote:
>> > Arrays start from 1 in Aubit4GL and informix 4gl..
>> > Internally - it should subtract 1 in the C code generated - because in C
>> > -
>> > arrays start at 0 - but you should never see that in 4gl..
>> > If you have Aubit4GL doing something different - let me know - it will
>> > be a
>> > bug..
>>
>> Hm... i4gl:
>>
>> define x integer,
>>      ar array[7] of integer
>> main
>>  for x=0 to 7
>>    let ar[x]=100+x
>>    display ar[x]
>>  end for
>> end main
>>
>> ->
>>
>>       100
>>       101
>>       102
>>       103
>>       104
>>       105
>>       106
>>       107
>>
>> (In a fact, it displays everything ok in case when x is to 100 too
>> :-))) but that is another problem)
>>
>> Aubit compiles the code, but asserts array out of its bounds when run.
>> It is just incompability, not aubit bug, of course. (I use arrays with
>> weekday() often, so I run into problems very quickly :-)
>>
>> >
>> >
>> > For Prompts - they are done in Screen mode when A4GL_UI=TUI - you can
>> > set
>> > (as you say) A4GL_UI=CONSOLE - and it will use the console mode (no
>> > windows/screens). This should use "fgets(..,stdin)" internally for the
>> > prompts , printf's for displays etc..
>>
>> What should I set, if I want multiple prompts (without clearing screen
>> during this input phase) and then I need "display at" work in 4gl?
>> Should it work with CONSOLE?
>>
>> >
>> > For clearing the program at exit - this is 'ncurses' restoring the
>> > original
>> > session, and will depend on your terminal type.
>> >
>> > You can try setting :
>> >
>> >    export NO_ALT_SCR=Y
>> >
>> > and see if that helps. This trys to turn off ncurses alternate screen
>> > mode -
>> > but again - it will depend on the terminal type.
>> >
>>
>> It did not help :-(
>>
>> Thanks,
>>
>>                     Michal
>>
>>
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