* Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
@ 2016-07-16 17:16 Eli Zaretskii
2016-07-22 7:16 ` Eli Zaretskii
2016-07-23 20:55 ` Andy Wingo
0 siblings, 2 replies; 6+ messages in thread
From: Eli Zaretskii @ 2016-07-16 17:16 UTC (permalink / raw)
To: guile-devel
CC libguile_2.0_la-socket.lo
socket.c: In function 'scm_fill_sockaddr':
socket.c:747:16: warning: variable 'scope_id' set but not used [-Wunused-but-set-variable]
unsigned long scope_id = 0;
^
The patch to avoid this warning is below. OK to commit?
--- libguile/socket.c~0 2016-01-02 16:24:55.000000000 +0200
+++ libguile/socket.c 2016-07-15 19:17:40.023250000 +0300
@@ -744,7 +744,9 @@ scm_fill_sockaddr (int fam, SCM address,
int port;
struct sockaddr_in6 *soka;
unsigned long flowinfo = 0;
+#ifdef HAVE_SIN6_SCOPE_ID
unsigned long scope_id = 0;
+#endif
SCM_VALIDATE_CONS (which_arg + 1, *args);
port = scm_to_int (SCM_CAR (*args));
@@ -755,8 +757,10 @@ scm_fill_sockaddr (int fam, SCM address,
*args = SCM_CDR (*args);
if (scm_is_pair (*args))
{
+#ifdef HAVE_SIN6_SCOPE_ID
SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
scope_id);
+#endif
*args = SCM_CDR (*args);
}
}
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
2016-07-16 17:16 Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable Eli Zaretskii
@ 2016-07-22 7:16 ` Eli Zaretskii
2016-08-10 6:49 ` Mark H Weaver
2016-07-23 20:55 ` Andy Wingo
1 sibling, 1 reply; 6+ messages in thread
From: Eli Zaretskii @ 2016-07-22 7:16 UTC (permalink / raw)
To: guile-devel
Ping!
> Date: Sat, 16 Jul 2016 20:16:35 +0300
> From: Eli Zaretskii <eliz@gnu.org>
>
> CC libguile_2.0_la-socket.lo
> socket.c: In function 'scm_fill_sockaddr':
> socket.c:747:16: warning: variable 'scope_id' set but not used [-Wunused-but-set-variable]
> unsigned long scope_id = 0;
> ^
>
> The patch to avoid this warning is below. OK to commit?
>
> --- libguile/socket.c~0 2016-01-02 16:24:55.000000000 +0200
> +++ libguile/socket.c 2016-07-15 19:17:40.023250000 +0300
> @@ -744,7 +744,9 @@ scm_fill_sockaddr (int fam, SCM address,
> int port;
> struct sockaddr_in6 *soka;
> unsigned long flowinfo = 0;
> +#ifdef HAVE_SIN6_SCOPE_ID
> unsigned long scope_id = 0;
> +#endif
>
> SCM_VALIDATE_CONS (which_arg + 1, *args);
> port = scm_to_int (SCM_CAR (*args));
> @@ -755,8 +757,10 @@ scm_fill_sockaddr (int fam, SCM address,
> *args = SCM_CDR (*args);
> if (scm_is_pair (*args))
> {
> +#ifdef HAVE_SIN6_SCOPE_ID
> SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
> scope_id);
> +#endif
> *args = SCM_CDR (*args);
> }
> }
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
2016-07-22 7:16 ` Eli Zaretskii
@ 2016-08-10 6:49 ` Mark H Weaver
2016-08-13 7:17 ` Eli Zaretskii
0 siblings, 1 reply; 6+ messages in thread
From: Mark H Weaver @ 2016-08-10 6:49 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: guile-devel
Hi Eli,
Eli Zaretskii <eliz@gnu.org> writes:
> CC libguile_2.0_la-socket.lo
> socket.c: In function 'scm_fill_sockaddr':
> socket.c:747:16: warning: variable 'scope_id' set but not used [-Wunused-but-set-variable]
> unsigned long scope_id = 0;
> ^
How about this?
--8<---------------cut here---------------start------------->8---
diff --git a/libguile/socket.c b/libguile/socket.c
index 3229ac8..beff305 100644
--- a/libguile/socket.c
+++ b/libguile/socket.c
@@ -744,7 +744,7 @@ scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg,
int port;
struct sockaddr_in6 *soka;
unsigned long flowinfo = 0;
- unsigned long scope_id = 0;
+ unsigned long scope_id SCM_UNUSED = 0;
SCM_VALIDATE_CONS (which_arg + 1, *args);
port = scm_to_int (SCM_CAR (*args));
--8<---------------cut here---------------end--------------->8---
See the definition of SCM_UNUSED in __scm.h.
What do you think?
Mark
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
2016-08-10 6:49 ` Mark H Weaver
@ 2016-08-13 7:17 ` Eli Zaretskii
0 siblings, 0 replies; 6+ messages in thread
From: Eli Zaretskii @ 2016-08-13 7:17 UTC (permalink / raw)
To: Mark H Weaver; +Cc: guile-devel
> From: Mark H Weaver <mhw@netris.org>
> Cc: guile-devel@gnu.org
> Date: Wed, 10 Aug 2016 02:49:08 -0400
>
> Hi Eli,
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > CC libguile_2.0_la-socket.lo
> > socket.c: In function 'scm_fill_sockaddr':
> > socket.c:747:16: warning: variable 'scope_id' set but not used [-Wunused-but-set-variable]
> > unsigned long scope_id = 0;
> > ^
>
> How about this?
>
> --8<---------------cut here---------------start------------->8---
> diff --git a/libguile/socket.c b/libguile/socket.c
> index 3229ac8..beff305 100644
> --- a/libguile/socket.c
> +++ b/libguile/socket.c
> @@ -744,7 +744,7 @@ scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg,
> int port;
> struct sockaddr_in6 *soka;
> unsigned long flowinfo = 0;
> - unsigned long scope_id = 0;
> + unsigned long scope_id SCM_UNUSED = 0;
>
> SCM_VALIDATE_CONS (which_arg + 1, *args);
> port = scm_to_int (SCM_CAR (*args));
> --8<---------------cut here---------------end--------------->8---
>
> See the definition of SCM_UNUSED in __scm.h.
Works for me (no warning after applying the patch), but couldn't this
be harmful for builds that do use the variable, by omitting real
warnings? If it could, maybe make the use of SCM_UNUSED be
conditional on HAVE_SIN6_SCOPE_ID being defined?
Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
2016-07-16 17:16 Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable Eli Zaretskii
2016-07-22 7:16 ` Eli Zaretskii
@ 2016-07-23 20:55 ` Andy Wingo
2016-07-24 14:35 ` Eli Zaretskii
1 sibling, 1 reply; 6+ messages in thread
From: Andy Wingo @ 2016-07-23 20:55 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: guile-devel
Hi :)
On Sat 16 Jul 2016 19:16, Eli Zaretskii <eliz@gnu.org> writes:
> CC libguile_2.0_la-socket.lo
> socket.c: In function 'scm_fill_sockaddr':
> socket.c:747:16: warning: variable 'scope_id' set but not used [-Wunused-but-set-variable]
> unsigned long scope_id = 0;
> ^
>
> The patch to avoid this warning is below. OK to commit?
I don't think so -- whether the underlying system has scope_id or no, we
need this assert to happen:
> +#ifdef HAVE_SIN6_SCOPE_ID
> SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
> scope_id);
> +#endif
Not sure what the right solution is.
Andy
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable
2016-07-23 20:55 ` Andy Wingo
@ 2016-07-24 14:35 ` Eli Zaretskii
0 siblings, 0 replies; 6+ messages in thread
From: Eli Zaretskii @ 2016-07-24 14:35 UTC (permalink / raw)
To: Andy Wingo; +Cc: guile-devel
> From: Andy Wingo <wingo@pobox.com>
> Cc: guile-devel@gnu.org
> Date: Sat, 23 Jul 2016 22:55:50 +0200
>
> > CC libguile_2.0_la-socket.lo
> > socket.c: In function 'scm_fill_sockaddr':
> > socket.c:747:16: warning: variable 'scope_id' set but not used
> > [-Wunused-but-set-variable]
> > unsigned long scope_id = 0;
> > ^
> >
> > The patch to avoid this warning is below. OK to commit?
>
> I don't think so -- whether the underlying system has scope_id or no, we
> need this assert to happen:
>
> > +#ifdef HAVE_SIN6_SCOPE_ID
> > SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
> > scope_id);
> > +#endif
>
> Not sure what the right solution is.
How about something this instead:
#ifdef HAVE_SIN6_SCOPE_ID
SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args),
scope_id);
#else
(void)SCM_NUM2ULONG (which_arg + 3, SCM_CAR (*args));
#endif
^ permalink raw reply [flat|nested] 6+ messages in thread
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2016-07-16 17:16 Avoid warnings in sockets.c when HAVE_SIN6_SCOPE_ID is unavailable Eli Zaretskii
2016-07-22 7:16 ` Eli Zaretskii
2016-08-10 6:49 ` Mark H Weaver
2016-08-13 7:17 ` Eli Zaretskii
2016-07-23 20:55 ` Andy Wingo
2016-07-24 14:35 ` Eli Zaretskii
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