When you do new Foo()
then two things happen: First operator new
is invoked to allocate memory, then a constructor for Foo
is called. If that constructor throws, since you cannot access the memory already allocated, the C++ runtime will take care of it by passing it to the appropriate operator delete
. That’s why you always must implement a matching operator delete
for every operator new
you write and that’s why it needs to be accessible.
As a way out you could make both of them private and invoke operator new
from a public member function (like create()
).