Where is the earliest position to set the exitcode? Which exitcode does the program generate if an error occurs? For example a seg fault.

Rainer Stratmann wrote

Where is the earliest position to set the exitcode?

What do you mean with "position"?

Which exitcode does the program generate if an error occurs?

Depends on the error. It's the same as the run time error number for that fault, see http://www.freepascal.org/docs-html/user/userap4.html

For example a seg fault.

214 or 216, depending on the operating system and the kind of "segfault" (some report them as bus errors, some as segmentation faults). It seems however that it's not documented that run time error 214 can also mean bus error.

Jonas

Jonas Maebe wrote

On 28 Dec 2008, at 18:16, Rainer Stratmann wrote: > Where is the earliest position to set the exitcode? What do you mean with "position"?

Which unit first executes to set the exitcode as early as possible.

That helps me, thanks, Rainer

The exit code is initialised as 0. You cannot set it to something else without at the same time terminating the program (using the halt() procedure). Well, you can change it, but it will be overwritten with the actual exit code when the program really terminates (the parameter of halt, or a run time error number).

Jonas

Here with Linux OS it works if I set the exitcode var. Nothing overwritten by the program.

program1 calls program2 and program2 says with the exitcode if program1 restarts program2 or finish all.

That works without calling halt(), if no error occurs.

Rainer

Ah, yes. I forgot about the situation where you just return from the main program. Still, I've never before heard of someone doing that and it does not seem very clean to me. But I can't immediately think how it would break either.

Jonas