From: Eric Niebler (eric_at_[hidden])
Date: 2004-05-27 02:09:40
Joel de Guzman wrote:
> rule<> a = x;
> rule<> a;
> a = x;
> How should this behave if x is an int_p?
The int_p gets stored in an object on the heap, and the rule<> stores a
shared_ptr to a polymorphic base.
> Now how should it behave if
> x is another rule? Consider a concrete example (snipped from the pascal
> rule<> identifier;
> rule<> fileIdentifier;
> identifier = ....
> fileIdentifier = identifier; // an alias
The shared_ptr's reference count goes up. What's the problem?
-- Eric Niebler Boost Consulting www.boost-consulting.com
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