From: dee%linus@MITRE-BEDFORD.ARPA (David E. Emery)
Subject: Re: Dynamic Address Clauses??
Date: 16 Jun 88 13:53:12 GMT [thread overview]
Message-ID: <8806161353.AA17815@linus.MENET> (raw)
Here's a very legitimate use for a dynamic address clause: C often
returns addresses of objects (becaues C functions cannot return
structures). The following should be perfectly legal AND ACCEPTABLE
(i.e. compilers should support this):
Ada C
type rec is record struct rec {
foo : integer; int foo;
bar : integer; int bar;
end record; };
rec *getstuff();
function getstuff
return system.address;
pragma interface (C, getstuff);
declare
myrec : rec;
for myrec use at getstuff;
-- function call returns system.address.
fooval, barval : integer;
begin
fooval := myrec.foo;
barval := myrec.bar;
end;
Obviously, if address clauses were restricted to be static, this
wouldn't work. They're not, so this should be just fine. I've tried
this technique on Verdix/Sun, and it works just fine.
dave emery
emery@mitre-bedford.arpa
next reply other threads:[~1988-06-16 13:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
1988-06-16 13:53 David E. Emery [this message]
1988-06-17 4:13 ` Dynamic Address Clauses?? Richard A. O'Keefe
-- strict thread matches above, loose matches on Subject: below --
1988-06-10 15:42 Jim Moody, DCA C342
1988-06-01 15:12 Mike Linnig
1988-06-02 12:39 ` Robert Firth
1988-06-10 14:38 ` stt
1988-06-15 21:19 ` Ron Guilmette
1988-06-03 6:02 ` Ron Guilmette
1988-06-03 14:52 ` markb
1988-06-06 12:33 ` David Collier-Brown
1988-06-08 18:52 ` Ron Guilmette
1988-06-10 19:22 ` Steve Hyland
1988-06-15 12:26 ` David Collier-Brown
1988-06-15 14:10 ` Burch Seymour
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