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Re: [libvirt] [PATCH] remote: avoid null dereference on error



On 05/03/2011 11:28 AM, Eric Blake wrote:
> Clang found three instances of uninitialized use of nparams in
> the cleanup path.  Unfortunately, one is a false positive: clang
> couldn't see that ret->params.params_val is guaranteed to be
> NULL unless allocated within a function, and that nparams is
> guaranteed to be assigned prior to the allocation; hoisting the
> assignment to nparams to be earlier in the function shuts up
> that false positive.  But two of the reports also happened to
> highlight a real bug - the error path can dereference NULL.

I meant to add:

    Regression introduced in commit 158ba873.

-- 
Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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