Re: blob in embedded c code

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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