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Re: [libvirt] [Xen-devel] [libvirt test] 50401: regressions - FAIL



On Tue, 2015-04-14 at 10:37 +0100, Daniel P. Berrange wrote:
> On Tue, Apr 14, 2015 at 10:33:45AM +0100, Ian Campbell wrote:
> > On Tue, 2015-04-14 at 02:27 +0000, osstest service user wrote:
> > > flight 50401 libvirt real [real]
> > > http://logs.test-lab.xenproject.org/osstest/logs/50401/
> > > 
> > > Regressions :-(
> > > 
> > > Tests which did not succeed and are blocking,
> > > including tests which could not be run:
> > >  build-armhf-libvirt           5 libvirt-build             fail REGR. vs. 50368
> > [...]
> > Per
> > http://logs.test-lab.xenproject.org/osstest/logs/50401/build-armhf-libvirt/5.ts-libvirt-build.log this is:
> > 
> > qemu/qemu_driver.c: In function 'qemuDomainAddCgroupForThread':
> > qemu/qemu_driver.c:4641:34: error: declaration of 'index' shadows a global declaration [-Werror=shadow]
> > qemu/qemu_driver.c: In function 'qemuDomainHotplugAddPin':
> > qemu/qemu_driver.c:4674:29: error: declaration of 'index' shadows a global declaration [-Werror=shadow]
> > qemu/qemu_driver.c: In function 'qemuDomainHotplugPinThread':
> > qemu/qemu_driver.c:4702:32: error: declaration of 'index' shadows a global declaration [-Werror=shadow]
> > qemu/qemu_driver.c: In function 'qemuDomainDelCgroupForThread':
> > qemu/qemu_driver.c:4733:34: error: declaration of 'index' shadows a global declaration [-Werror=shadow]
> > cc1: all warnings being treated as errors
> > 
> > 
> > This seems to be a general issue unrelated to Xen.
> > 
> > > version targeted for testing:
> > >  libvirt              b487bb810ec95df862e7e80468c8e861ed80b0cb
> > > baseline version:
> > >  libvirt              225aa80246d5e4a9e3a16ebd4c482525045da3db
> > 
> > After a quick glance I don't see a fix post-b487bb810ec9 either in
> > master or on the libvirt list.
> > 
> > Looking at the range under test it looks like one or more of John's
> > changes is adding parameters called index, shadowing index(3) from
> > <strings.h>.
> 
> Yeah, we've had this problem several times before - we usually just
> do a s/index/idx/ or similar to address it.

I see this is now fixed in libvirt.git#master, thanks.

However, I would just comment that contrary to the commit message, I
don't think there is anything the Xen build has done which caused this,
I think it's down to the LIBVIRT_COMPILE_WARNINGS macro which ends up
enabling Wshadow if it was available on the system which ran autogen and
on the compiling system.

Our builds run on Debian Wheezy, which IIRC uses gcc 4.4 which isn't
unusual...

Ian.


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