Re: [Xen-devel] libxl build errors in xen-unstable

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Tue, 2011-05-31 at 11:36 +0100, Olaf Hering wrote:
> On Tue, May 31, Ian Campbell wrote:
> 
> > On Mon, 2011-05-30 at 17:33 +0100, Olaf Hering wrote:
> > > There are new build errors in xen-unstable since revision 23368.
> > > Wether the _libxl_paths.h.tmp/_libxl_paths.h errros/warnings are new, no
> > > idea.
> > [...]
> > > cmp: _libxl_paths.h.tmp: No such file or directory
> > > sed -e "s/\([^=]*\)=\(.*\)/#define \1 \2/g" _libxl_paths.h.tmp 
> > > >_libxl_paths.h.2.tmp
> > > if ! cmp _libxl_paths.h.2.tmp _libxl_paths.h; then mv -f 
> > > _libxl_paths.h.2.tmp _libxl_paths.h; fi
> > > Parsing libxl.idl
> > > cmp: _libxl_paths.h: No such file or directory
> > 
> > Presumably this also yields the correct return code to cause the mv to
> > happen, so you do end up with a _libxl_paths.h with stuff in it?
> 
> Ian,
> 
> this is an automated build, I just have that log.
> 
> 
> > [...]
> > > libxl_exec.c:48: error: ignoring return value of 'atoi', declared with 
> > > attribute warn_unused_result
> > [...]
> > > libxl_exec.c:224: error: ignoring return value of 'write', declared with 
> > > attribute warn_unused_result
> > [...]
> > > libxl_device.c:488: error: ignoring return value of 'read', declared with 
> > > attribute warn_unused_result
> > 
> > Has someone got a bit carried away with the warn_unused_result attribute
> > in your distro/gcc/libc/etc? Applying that sort of attribute system wide
> > to such widespread functions seems like... trouble...
> 
> This is SLES11SP1. The applied attribute is not new.

Thanks. Do the various patches I sent to the thread resolve the issue?

Ian.



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