c++ - Find pointer to derived class in a table after the object was destroyed -

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i have derived class derived class base

i have std:: container of derived* pointers (such vector, set, etc...). have base* pointer , know if container contains pointer.

rtti , dynamic_cast<derived*>(base) not usable @ point, object may have been destroyed, or may in destructor call chain.

how can check if container contains base pointer?

if static_cast works, possible.

cppreference : static_cast .

if new_type pointer or reference class d , type of expression pointer or reference non-virtual base b, static_cast performs downcast. such static_cast makes no runtime checks ensure object's runtime type d, , may used safely if precondition guaranteed other means, such when implementing static polymorphism. safe downcast may done dynamic_cast.

there no checks, static_cast should make correct pointer adjustment.

reinterpret_cast relies on &base == &derived static_cast allows compiler return adjustment base if derived class not @ start of object.

could callback occur earlier?


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