Hi All,Greetings my first post, hopefully helpful for someone else besides
myself.I am facing difficulties trying to understand the wiki page
Policies/Binary Compatibility Issues With C++ in the sectionAdding new data
members to classes without d-pointer. I think the docu is wrong (please forgive
and coreect me if i am wrong) the code sample following was taken from the docu
and i have added some comment using triple slash (///):Code: Select all// BCI:
Add a real d-pointer
Q_GLOBAL_STATIC(QHash<Foo *,FooPrivate>, d_func); ///FooPrivate is not declare
as a pointer here.
static FooPrivate* d( const Foo* foo )
{
// i think here it would failed since is expecting a pointer or?
FooPrivate* ret = d_func()->value( foo, 0 );
if ( ! ret ) {
ret = new FooPrivate;///here is a pointer
d_func()->insert( foo, ret );
}
return ret;
}
static void delete_d( const Foo* foo )
{
FooPrivate* ret = d_func()->value( foo, 0 );
///delete is called without validating the pointer
delete ret;
d_func()->remove( foo );
}The question is about the pointers usage here.cafu
Re: Adding new data members to classes without d-pointerThu Jul 26, 2012 7:24
am from bcooksley Given the nature of this problem, I would prefer to delegate
to the people more versed in binary compatibility. Binary compatibility is very
important to KDE.
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