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virobject: Check if @parent is the first member in class

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Our virObject code relies heavily on the fact that the first
member of the class struct is type of virObject (or some
derivation of if). Let's check for that.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Michal Privoznik 2018-04-17 17:52:03 +02:00
parent 10f94828ea
commit 76ae74b1d1
1 changed files with 2 additions and 1 deletions
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3
src/util/virobject.h
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@ -76,7 +76,8 @@ virClassPtr virClassForObjectRWLockable(void);
# endif
# define VIR_CLASS_NEW(name, prnt) \
(name##Class = virClassNew(prnt, #name, sizeof(name), name##Dispose))
verify_expr(offsetof(name, parent) == 0, \
(name##Class = virClassNew(prnt, #name, sizeof(name), name##Dispose)))
virClassPtr
virClassNew(virClassPtr parent,