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From: Stephen Leake <Stephen.Leake@gsfc.nasa.gov>
Subject: Re: import a C function returning char *
Date: 1999/02/04
Message-ID: <uaeyu3x7d.fsf@gsfc.nasa.gov>#1/1
X-Deja-AN: 440655453
References: <ud83r4c6w.fsf@gsfc.nasa.gov> <877ltzckn4.fsf@zaphod.enst.fr>
Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
Newsgroups: comp.lang.ada
Date: 1999-02-04T00:00:00+00:00
List-Id: <comp.lang.ada>

Samuel Tardieu <sam@ada.eu.org> writes:

> >>>>> "Stephen" == Stephen Leake <Stephen.Leake@gsfc.nasa.gov> writes:
> 
> Stephen> Is this going to work (I'll get around to compiling this
> Stephen> soon)? I'm using GNAT 3.11p and ObjectAda 7.12 on Windows NT;
> Stephen> what about other Ada compilers?
> 
> What do you think "Sbs_Read_Error'Length" would contain? You can't tell?
> Neither can the compiler :-)

Yes, this was why I was wondering if it would work.

> Use Interfaces.C.Strings.chars_ptr, since what you get from this C
> function is only a pointer onto the beginning of the string (char *),
> don't expect to get more just by writing it in Ada :-)

Yes, that's the solution. I thought I remembered a chars_ptr
somewhere, and I'd have found it if I'd just looked in the LRM index.
I guess I was just having a bad day ...

-- Stephe