#include <new>#include <iostream>using namespace std;class A{public: A(const int src_x) { x = src_x; } ~A() { } int x;};int main(void){ void* buf = ::operator new(sizeof(A) * 50); A* a = new(buf) A(50); a->~A(); ::operator delete(buf); return 0;}
[source lang = "cpp"]#include <new>#include <iostream>using namespace std;class A{public: A(const int src_x) { x = src_x; } ~A() { } A& A::operator=(const A& rhs) { if(&rhs == this) return *this; x = rhs.x; return *this; } int x;};int main(void){ void* buf = ::operator new(sizeof(A) * 50); A* a = new(buf) A(999); for(size_t i = 0; i < 50; i++) a = a[0]; cout << a[49].x; a->~A(); ::operator delete(buf); return 0;}Quote:Original post by DigitalDelusion
Well you could simply borrow my code snippet and send your pointer and size instead of mine and it would work :p
Quote:Original post by Anonymous PosterQuote:Original post by DigitalDelusion
Well you could simply borrow my code snippet and send your pointer and size instead of mine and it would work :p
I don't get your drift...
Quote:Original post by DigitalDelusionQuote:Original post by Anonymous PosterQuote:Original post by DigitalDelusion
Well you could simply borrow my code snippet and send your pointer and size instead of mine and it would work :p
I don't get your drift...
you could simply use the raw_init and raw_kill functions from eariler in this thread.
also using op= could potentially cause very bad things (tm) since that could have the not so nice sideeffect of invoking the dtor.
Quote:Original post by Anonymous Poster
Another thing: how does one call the destructor on all of the objects in the array?
a->~A();
only destructs the first one.
for(size_t i = 0; i ~A();
is not legal.
for(size_t i = 0; i != N; ++i) a.~A();Quote:Original post by DigitalDelusionQuote:Original post by Anonymous Poster
Another thing: how does one call the destructor on all of the objects in the array?
a->~A();
only destructs the first one.
for(size_t i = 0; i ~A();
is not legal.
well, you could have a look at the raw_kill function eariler in this thread..
or if you're lazy
for(size_t i = 0; i != N; ++i)
a.~A();
Quote:Original post by Anonymous Poster
I see. Sorry, I was not paying close enough attention. Thanks for the info. :)
