C++ In a Nutshell

Name

nothrow object — Requests null pointer return when out of memory

Synopsis

struct nothrow_t {};
extern const nothrow_t nothrow;

The nothrow object is used in placement new expressions to request that the new operator return a null pointer instead of throwing bad_alloc if the memory allocation request cannot be fulfilled.

The nothrow_t type does not do anything; it is used only in overloaded placement new and delete operators.

Note that nothrow is also accepted by overloaded operator delete for symmetry with new. The nothrow version of operator delete behaves just like the ordinary operator delete. Like any placement delete function, it is called only if the placement new expression throws an exception.

See Also

operator delete , operator new