Re: [PATCH] qtest: fix 'expression is always false' build failure in qtest_has_accel()

[Igor Mammedov]

On Wed, 27 Oct 2021 17:59:44 +0200
Paolo Bonzini <pbonzini@redhat.com> wrote:

> On 27/10/21 09:45, Igor Mammedov wrote:
> > If KVM is disabled or not present, qtest library build
> > may fail with:
> >     libqtest.c: In function 'qtest_has_accel':
> >        comparison of unsigned expression < 0 is always false
> >        [-Werror=type-limits]
> >           for (i = 0; i < ARRAY_SIZE(targets); i++) {
> > 
> > due to empty 'targets' array.
> > Fix it by compiling KVM related part only if
> > CONFIG_KVM_TARGETS is set.  
> 
> Another possibility is to add a trailing NULL to the array and change 
> the loop to "for (i = 0; targets[i]; i++)".

Thanks,
I've sent v2 with Michael suggested approach,
it seems to me a bit more cleaner.
 
> 
> Paolo
>