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From: Al Johnston <sofeise@mindspring.com>
Subject: Re: ada to c interfaces and CHARS_PTR
Date: 2000/03/09
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References: <38C7E515.29C42580@mindspring.com>
 <slrn8cg095.1p1.randhol@kiuk0156.chembio.ntnu.no>
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Date: 2000-03-10T01:05:50+00:00
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> Check PGAda at http://www.infres.enst.fr/ANC/

Thanks... I did... but it hasn't help much.  You (they?) show a
binding for a procedure that uses chars_ptr as a formal parameter,
but the is no c code to show me what should be done on the
"callie" side.  Thinking that even I could get that to work I did
the following:

    procedure foo( bar : chars_ptr);
    pragma import(c,foo,"foo")
and
    foo(my_chars_ptr);
on the ada side, where
    my_chars_ptr : chars_ptr
which was initialized by the appropriate routine.

on the c side I did
    void foo(char *bar)
and had the foo routine copy bar to a local array and then
print it out.

running the routine results in the expected behavior for the
c routine, but as it is returning to the ada caller the program
cores...

Am I an idiot or is something screwy... okay... so I am an
idiot... arrrrrrrg.....somebody give me a hand with this.....

I am running gnat 3.12 on a x86 box running rh linux 6.1