* Lots of "error: multiple storage classes" warnings on the Linux kernel
@ 2010-08-19 12:53 Bernd Petrovitsch
2010-08-19 19:26 ` Sam Ravnborg
0 siblings, 1 reply; 3+ messages in thread
From: Bernd Petrovitsch @ 2010-08-19 12:53 UTC (permalink / raw)
To: linux-sparse
Hi all!
While investigating something completely different, I noticed lots of
"error: multiple storage classes" warnings, e.g.
---- snip ----
CHECK security/keys/keyring.c
include/linux/sched.h:831:12: error: multiple storage classes: extern weak
security/keys/keyring.c:75:1: error: multiple storage classes: extern weak
security/keys/keyring.c:471:1: error: multiple storage classes: extern weak
security/keys/keyring.c:899:1: error: multiple storage classes: extern weak
security/keys/keyring.c:974:1: error: multiple storage classes: extern weak
security/keys/keyring.c:1033:1: error: multiple storage classes: extern weak
---- snip ----
[ The ": extern weak" is from me to see which are actually set. ]
Is this warning correct that way (and the source should be fixed) or is
the warning in that wrong?
Bernd
--
mobile: +43 664 4416156 http://www.sysprog.at/
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Lots of "error: multiple storage classes" warnings on the Linux kernel
2010-08-19 12:53 Lots of "error: multiple storage classes" warnings on the Linux kernel Bernd Petrovitsch
@ 2010-08-19 19:26 ` Sam Ravnborg
2010-08-20 8:37 ` Bernd Petrovitsch
0 siblings, 1 reply; 3+ messages in thread
From: Sam Ravnborg @ 2010-08-19 19:26 UTC (permalink / raw)
To: Bernd Petrovitsch; +Cc: linux-sparse
On Thu, Aug 19, 2010 at 02:53:12PM +0200, Bernd Petrovitsch wrote:
> Hi all!
>
> While investigating something completely different, I noticed lots of
> "error: multiple storage classes" warnings, e.g.
> ---- snip ----
> CHECK security/keys/keyring.c
> include/linux/sched.h:831:12: error: multiple storage classes: extern weak
> security/keys/keyring.c:75:1: error: multiple storage classes: extern weak
> security/keys/keyring.c:471:1: error: multiple storage classes: extern weak
> security/keys/keyring.c:899:1: error: multiple storage classes: extern weak
> security/keys/keyring.c:974:1: error: multiple storage classes: extern weak
> security/keys/keyring.c:1033:1: error: multiple storage classes: extern weak
> ---- snip ----
> [ The ": extern weak" is from me to see which are actually set. ]
>
> Is this warning correct that way (and the source should be fixed) or is
> the warning in that wrong?
Can you cook up a small code snippet that
exhibit this without all the kernel macros etc?
This would make it easier for the sparse folks to understand.
Sam
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Lots of "error: multiple storage classes" warnings on the Linux kernel
2010-08-19 19:26 ` Sam Ravnborg
@ 2010-08-20 8:37 ` Bernd Petrovitsch
0 siblings, 0 replies; 3+ messages in thread
From: Bernd Petrovitsch @ 2010-08-20 8:37 UTC (permalink / raw)
To: Sam Ravnborg; +Cc: linux-sparse
On Don, 2010-08-19 at 21:26 +0200, Sam Ravnborg wrote:
> On Thu, Aug 19, 2010 at 02:53:12PM +0200, Bernd Petrovitsch wrote:
[...]
> > While investigating something completely different, I noticed lots of
> > "error: multiple storage classes" warnings, e.g.
> > ---- snip ----
> > CHECK security/keys/keyring.c
> > include/linux/sched.h:831:12: error: multiple storage classes: extern weak
> > security/keys/keyring.c:75:1: error: multiple storage classes: extern weak
> > security/keys/keyring.c:471:1: error: multiple storage classes: extern weak
> > security/keys/keyring.c:899:1: error: multiple storage classes: extern weak
> > security/keys/keyring.c:974:1: error: multiple storage classes: extern weak
> > security/keys/keyring.c:1033:1: error: multiple storage classes: extern weak
> > ---- snip ----
> > [ The ": extern weak" is from me to see which are actually set. ]
> >
> > Is this warning correct that way (and the source should be fixed) or is
> > the warning in that wrong?
>
> Can you cook up a small code snippet that
> exhibit this without all the kernel macros etc?
Of course.
> This would make it easier for the sparse folks to understand.
---- snip ----
{341}echo 'extern int __attribute__((weak)) foobar(void);' | sparse -f -
-:1:12: error: multiple storage classes: extern weak
---- snip ----
is a minimal example shows that.
Bernd
--
Bernd Petrovitsch Email : bernd@petrovitsch.priv.at
LUGA : http://www.luga.at
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2010-08-19 12:53 Lots of "error: multiple storage classes" warnings on the Linux kernel Bernd Petrovitsch
2010-08-19 19:26 ` Sam Ravnborg
2010-08-20 8:37 ` Bernd Petrovitsch
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