* We are nesting functions now?
@ 2002-12-11 20:06 Matt Young
2002-12-11 21:33 ` kwall
0 siblings, 1 reply; 5+ messages in thread
From: Matt Young @ 2002-12-11 20:06 UTC (permalink / raw)
To: gcc
/* This seems to work */
int main() {
void fi() {
void f2() {
printf("F2\n");
}
void f3() {
printf("F3\n");
f2();
}
printf("F1\n");
}
fi();
f3();
return 1;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: We are nesting functions now?
2002-12-11 20:06 We are nesting functions now? Matt Young
@ 2002-12-11 21:33 ` kwall
2002-12-11 22:19 ` Timothy J. Wood
0 siblings, 1 reply; 5+ messages in thread
From: kwall @ 2002-12-11 21:33 UTC (permalink / raw)
To: GCC List
Feigning erudition, Matt Young wrote:
% /* This seems to work */
% int main() {
% void fi() {
% void f2() {
% printf("F2\n");
% }
% void f3() {
% printf("F3\n");
% f2();
% }
% printf("F1\n");
% }
% fi();
% f3();
% return 1;
% }
Please define "seems to work". After #including stdio.h,
[~/src]$ cc -Wall nest.c
nest.c: In function `main':
nest.c:15: warning: implicit declaration of function `f3'
/tmp/cc4UlMpa.o: In function `main':
/tmp/cc4UlMpa.o(.text+0x82): undefined reference to `f3'
collect2: ld returned 1 exit status
[~/src]$ gcc -v
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/specs
Configured with: ../gcc-3.2/configure --enable-threads --enable-shared --enable-static --disable-nls --enable-languages=c,c++,g77,objective-c
Thread model: posix
gcc version 3.2
Kurt
--
Steinbach's Guideline for Systems Programming:
Never test for an error condition you don't know how to
handle.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: We are nesting functions now?
2002-12-11 21:33 ` kwall
@ 2002-12-11 22:19 ` Timothy J. Wood
2002-12-12 6:49 ` Kris Warkentin
0 siblings, 1 reply; 5+ messages in thread
From: Timothy J. Wood @ 2002-12-11 22:19 UTC (permalink / raw)
To: kwall; +Cc: GCC List
If you move the call to f3 so that it is in the proper scope, this
works:
% cc -Wall foo.c -o foo
% ./foo
F1
F3
F2
% cc -v
cc -v
Reading specs from /usr/libexec/gcc/darwin/ppc/3.1/specs
Thread model: posix
Apple Computer, Inc. GCC version 1173, based on gcc version 3.1
20020420 (prerelease)
#include <stdio.h>
int main() {
void fi() {
void f2() {
printf("F2\n");
}
void f3() {
printf("F3\n");
f2();
}
printf("F1\n");
f3();
}
fi();
return 1;
}
-tim
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: We are nesting functions now?
2002-12-11 22:19 ` Timothy J. Wood
@ 2002-12-12 6:49 ` Kris Warkentin
2002-12-12 17:47 ` Paul Brook
0 siblings, 1 reply; 5+ messages in thread
From: Kris Warkentin @ 2002-12-12 6:49 UTC (permalink / raw)
To: kwall, Timothy J. Wood; +Cc: GCC List
It's a gcc extension. Probably in there for Pascal support.
http://gcc.gnu.org/onlinedocs/gcc-3.2/gcc/Nested-Functions.html#Nested%20Fun
ctions
cheers,
Kris
----- Original Message -----
From: "Timothy J. Wood" <tjw@omnigroup.com>
To: <kwall@kurtwerks.com>
Cc: "GCC List" <gcc@gnu.org>
Sent: Thursday, December 12, 2002 1:00 AM
Subject: Re: We are nesting functions now?
>
>
> If you move the call to f3 so that it is in the proper scope, this
> works:
>
> % cc -Wall foo.c -o foo
> % ./foo
> F1
> F3
> F2
> % cc -v
> cc -v
> Reading specs from /usr/libexec/gcc/darwin/ppc/3.1/specs
> Thread model: posix
> Apple Computer, Inc. GCC version 1173, based on gcc version 3.1
> 20020420 (prerelease)
>
>
> #include <stdio.h>
> int main() {
> void fi() {
> void f2() {
> printf("F2\n");
> }
> void f3() {
> printf("F3\n");
> f2();
> }
> printf("F1\n");
> f3();
> }
> fi();
> return 1;
> }
>
> -tim
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: We are nesting functions now?
2002-12-12 6:49 ` Kris Warkentin
@ 2002-12-12 17:47 ` Paul Brook
0 siblings, 0 replies; 5+ messages in thread
From: Paul Brook @ 2002-12-12 17:47 UTC (permalink / raw)
To: Kris Warkentin, kwall, Timothy J. Wood; +Cc: GCC List
On Thursday 12 December 2002 1:57 pm, Kris Warkentin wrote:
> It's a gcc extension. Probably in there for Pascal support.
Also used by the fortran frontends.
>
> http://gcc.gnu.org/onlinedocs/gcc-3.2/gcc/Nested-Functions.html#Nested%20
>Functions
Paul Brook
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2002-12-13 1:26 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2002-12-11 20:06 We are nesting functions now? Matt Young
2002-12-11 21:33 ` kwall
2002-12-11 22:19 ` Timothy J. Wood
2002-12-12 6:49 ` Kris Warkentin
2002-12-12 17:47 ` Paul Brook
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