Christopher Smith wrote:
You might think that delete ptr fails to free up the memory allocated
for Bar correctly, but point in fact you could cast ptr to a void* and
invoke free() and it would do fine
I should clarify that one thing that *wouldn't* be fine about doing that
is that Foo::~Foo() wouldn't get run. I was referring only to free()
successfully cleaning up all the memory allocated for Foo. If
Foo::~Foo() is defined, it is quite likely there are important resources
that it cleans up that would NOT get cleaned up if you did
free((void*)ptr), but the free would successfully deallocate sizeof(Bar)
bits of memory and whatever additional memory the heap uses to manage
said memory.
--Chris
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