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From: Lars Troppen <lars.g.troppen@net1b.kongsberg.com>
Newsgroups: comp.lang.ada
Subject: Re: What happens to Ada exceptions if c calls ada
Date: 02 Jul 2001 13:32:14 +0200
Organization: Kongsberg Gruppen ASA
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Date: 2001-07-02T13:32:14+02:00
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Mark.Doherty@uk.thalesgroup.com (Mark Doherty) writes:

> I am writing a mixed language application (not by choice).
> 
> I have an Ada main program calling c routines that in turn calling an
> Ada device driver.
> 
> What happens if the device driver raises an exception?

>From my experience the exception will be propagated up to 
the first block that contains an exception handler. So 
your C code will never see the exceptions (natually).

If your c code has problems with this you have to make sure
that all exceptions are trapped in the device driver and converted
to return codes that C will understand.

Lars Troppen, Dept DC4S, Kongsberg Defence & Aerospace
PO 1003, N3601 Kongsberg, Norway
Tel: (+47) 32288722 Mail: lars.g.troppen@kongsberg.com