Re: [Libguestfs] [PATCH] diff: avoid potential null pointer dereference on error

On 11/03/2017 11:19 AM, Pino Toscano wrote: > If visit_guest() fails, then it returns a null pointer; later on, > free_tree() is called unconditionally on the variables, thus > dereferencing null pointers. > > Thus guard the free_tree() invocations. Would it be any better to teach free_tree() to be more free()-like by being a no-op on NULL?