Re: [Xen-devel] [PATCH] tools/xen-detect: try sysfs node for obtaining guest type

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Jun 21, 2017 at 04:24:33PM +0200, Olaf Hering wrote:
> On Thu, Jun 15, Juergen Gross wrote:
> 
> > +++ b/tools/misc/xen-detect.c
> 
> > +        asprintf(&ver, "V%u.%u",
> > +                 (uint16_t)(regs[0] >> 16), (uint16_t)regs[0]);
> 
> > +        asprintf(&ver, "V%s.%s", str, tmp);
> 
> This fails to build:
> 
> xen-detect.c:196:17: error: ignoring return value of 'asprintf', declared 
> with attribute warn_unused_result [-Werror=unused-result]
> xen-detect.c:93:17: error: ignoring return value of 'asprintf', declared with 
> attribute warn_unused_result [-Werror=unused-result]

Hmm... your gcc seems to be rather strict. :-)

> 
> Olaf



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