void* operator new[](std::size_t size);
Replaceable: a C++ program can define a function with this function signature that displaces the default version defined by the C++ standard library.
Required behavior: Same as for operator new(std::size_t). This requirement is binding on a replacement version of this function.
Default behavior: Returns operator new(size).
void* operator new[](std::size_t size, const std::nothrow_t&) noexcept;
Effects: Same as above, except that it is called by a placement version of a new-expression when a C++ program prefers a null pointer result as an error indication, instead of a bad_alloc exception.
Replaceable: a C++ program can define a function with this function signature that displaces the default version defined by the C++ standard library.
Required behavior: Return a non-null pointer to suitably aligned storage ([basic.stc.dynamic]), or return a null pointer. This requirement is binding on a replacement version of this function.
Default behavior: Calls operator new[](size). If the call returns normally, returns the result of that call. Otherwise, returns a null pointer.
void operator delete[](void* ptr) noexcept; void operator delete[](void* ptr, std::size_t size) noexcept;
Replaceable: a C++ program can define a function with signature void operator delete[](void* ptr) noexcept that displaces the default version defined by the C++ standard library. If this function (without size parameter) is defined, the program should also define void operator delete[](void* ptr, std::size_t size) noexcept. If this function with size parameter is defined, the program shall also define the version without the size parameter. [ Note: The default behavior below may change in the future, which will require replacing both deallocation functions when replacing the allocation function. — end note ]
Requires: ptr shall be a null pointer or its value shall be the value returned by an earlier call to operator new[](std::size_t) or operator new[](std::size_t,const std::nothrow_t&) which has not been invalidated by an intervening call to operator delete[](void*).
Requires: If present, the std::size_t size argument must equal the size argument passed to the allocation function that returned ptr.
Required behavior: Calls to operator delete[](void* ptr, std::size_t size) may be changed to calls to operator delete[](void* ptr) without affecting memory allocation. [ Note: A conforming implementation is for operator delete[](void* ptr, std::size_t size) to simply call operator delete[](void* ptr). — end note ]
Default behavior: operator delete[](void* ptr, std::size_t size) calls operator delete[](ptr), and operator delete[](void* ptr) calls operator delete(ptr).
void operator delete[](void* ptr, const std::nothrow_t&) noexcept; void operator delete[](void* ptr, std::size_t size, const std::nothrow_t&) noexcept;
Replaceable: a C++ program may define a function with signature void operator delete[](void* ptr, const std::nothrow_t&) noexcept that displaces the default version defined by the C++ standard library. If this function (without size parameter) is defined, the program should also define void operator delete[](void* ptr, std::size_t size, const std::nothrow_t&) noexcept. If this function with size parameter is defined, the program shall also define the version without the size parameter. [ Note: The default behavior below may change in the future, which will require replacing both deallocation functions when replacing the allocation function. — end note ]
Requires: If present, the std::size_t size argument must equal the size argument passed to the allocation function that returned ptr.
Required behavior: Calls to operator delete[](void* ptr, std::size_t size, const std::nothrow_t&) may be changed to calls to operator delete[](void* ptr, const std::nothrow_t&) without affecting memory allocation. [ Note: A conforming implementation is for operator delete[](void* ptr, std::size_t size, const std::nothrow_t&) to simply call operator delete[](void* ptr, const std::nothrow_t&). — end note ]
Default behavior: operator delete[](void* ptr, std::size_t size, const std::nothrow_t&) calls operator delete[](ptr, std::nothrow), and operator delete[](void* ptr, const std::nothrow_t&) calls operator delete[](ptr).
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