* `initializer element is not constant' issue
@ 2001-08-21 14:23 Gigi Sullivan
2001-08-22 0:33 ` Alexandre Oliva
0 siblings, 1 reply; 5+ messages in thread
From: Gigi Sullivan @ 2001-08-21 14:23 UTC (permalink / raw)
To: gcc-help
Aiee :)
Hello!
I'd like to initialize global variables outside of
functions (as usual) in a slightly different manner;
let's consider the attached file, please.
Everything should be ok, but I get
`initializer element is not constant' error from the compiler.
Is there a way to work around this, please? [1]
bye bye && thanks!
-- gg sullivan
[1]: I cannot/don't want to put these declaration inside some
functions.
--
Lorenzo Cavallaro `Gigi Sullivan' <sullivan@sikurezza.org>
Until I loved, life had no beauty;
I did not know I lived until I had loved. (Theodor Korner)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: `initializer element is not constant' issue
2001-08-21 14:23 `initializer element is not constant' issue Gigi Sullivan
@ 2001-08-22 0:33 ` Alexandre Oliva
2001-08-22 3:42 ` Gigi Sullivan
0 siblings, 1 reply; 5+ messages in thread
From: Alexandre Oliva @ 2001-08-22 0:33 UTC (permalink / raw)
To: Gigi Sullivan; +Cc: gcc-help
On Aug 21, 2001, Gigi Sullivan <sullivan@sikurezza.org> wrote:
> Everything should be ok, but I get
> `initializer element is not constant' error from the compiler.
> Is there a way to work around this, please? [1]
I'm afraid initializers of global variables cannot contain function
calls in C.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: `initializer element is not constant' issue
2001-08-22 0:33 ` Alexandre Oliva
@ 2001-08-22 3:42 ` Gigi Sullivan
2001-08-23 8:00 ` Gigi Sullivan
0 siblings, 1 reply; 5+ messages in thread
From: Gigi Sullivan @ 2001-08-22 3:42 UTC (permalink / raw)
To: Alexandre Oliva; +Cc: gcc-help
Aiee :)
Hello!
On Wed, Aug 22, 2001 at 04:29:48AM -0300, Alexandre Oliva wrote:
> > `initializer element is not constant' error from the compiler.
>
> > Is there a way to work around this, please? [1]
>
> I'm afraid initializers of global variables cannot contain function
> calls in C.
Hep, as I supposed :) ...
Is this either a standard or just a not-implemented
feature by gcc?
Do you have any advice about doing something like that?
I need to initialize global vars while filling some table,
but I don't want to fill this table within function call ...
Is it definetly just impossible?
bye bye && thanks!
-- gg sullivan
--
Lorenzo Cavallaro `Gigi Sullivan' <sullivan@sikurezza.org>
Until I loved, life had no beauty;
I did not know I lived until I had loved. (Theodor Korner)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: `initializer element is not constant' issue
2001-08-22 3:42 ` Gigi Sullivan
@ 2001-08-23 8:00 ` Gigi Sullivan
2001-08-23 23:39 ` Alexandre Oliva
0 siblings, 1 reply; 5+ messages in thread
From: Gigi Sullivan @ 2001-08-23 8:00 UTC (permalink / raw)
To: aoliva; +Cc: gcc-help
Aiee :)
Hello!
On Wed, Aug 22, 2001 at 12:15:59PM +0200, Gigi Sullivan wrote:
> On Wed, Aug 22, 2001 at 04:29:48AM -0300, Alexandre Oliva wrote:
> > > `initializer element is not constant' error from the compiler.
> >
> > > Is there a way to work around this, please? [1]
> >
> > I'm afraid initializers of global variables cannot contain function
> > calls in C.
>
> Is it definetly just impossible?
Ok, I found something that could be acceptable to me, a sorta
of workaround (even, oviously, is not just what I wanted to
do ;))
Any comments, hints about this (3 really small C filefollows)?
Basically I used __attribute__((constructor)) gcc extension.
I'm aware that this is not a really portable feature (it's not
standard) but I think that many people are using gcc right now,
am I right? :)
--
Lorenzo Cavallaro `Gigi Sullivan' <sullivan@sikurezza.org>
Until I loved, life had no beauty;
I did not know I lived until I had loved. (Theodor Korner)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: `initializer element is not constant' issue
2001-08-23 8:00 ` Gigi Sullivan
@ 2001-08-23 23:39 ` Alexandre Oliva
0 siblings, 0 replies; 5+ messages in thread
From: Alexandre Oliva @ 2001-08-23 23:39 UTC (permalink / raw)
To: Gigi Sullivan; +Cc: gcc-help
On Aug 23, 2001, Gigi Sullivan <sullivan@sikurezza.org> wrote:
>> Is it definetly just impossible?
> Basically I used __attribute__((constructor)) gcc extension.
Yep, that's the only way to do it in C. You can switch to C++, that
introduces the ability to do dynamic initialization of global
variables.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2001-08-23 23:39 UTC | newest]
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2001-08-21 14:23 `initializer element is not constant' issue Gigi Sullivan
2001-08-22 0:33 ` Alexandre Oliva
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2001-08-23 8:00 ` Gigi Sullivan
2001-08-23 23:39 ` Alexandre Oliva
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