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/*

# nullptr

C++11 keyword.

Better alternative to `0` and `NULL` ugliness:

http://stackoverflow.com/questions/1282295/what-exactly-is-nullptr

# nullptr_t

Type of nullptr.

*/

#include "common.hpp"

int main() {

#if __cplusplus >= 201103L

// No address can be nullptr

{

std::nullptr_t p = nullptr;

int i;

// g++ 4.7 warning: &i will never be null. Smart.

//assert(&i != p);

}

// It is possible to convert NULL and 0 to nullptr_t.

{

std::nullptr_t p;

p = NULL;

p = 0;

}

/*

It is not possible to convert nullptr_t to NULL and 0

This allows to overload a function for both pointer and integer.

In that case, passing it a `0` would always select the integer version.

*/

{

//int i = nullptr;

}

// Unlike in NULL, the size of nullptr_t is fixed.

{

assert(sizeof(std::nullptr_t) == sizeof(void*));

}

#endif

}