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Section: 126.96.36.199 [mem.poly.allocator.mem] Status: C++20 Submitter: Japan Opened: 2019-11-04 Last modified: 2021-02-25
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Addresses JP 218/219
It's better to use a C++ property than C standard library macro, SIZE_MAX.
[2019-11 Status to Ready during Tuesday morning issue processing in Belfast.]
This wording is relative to N4835.
Modify 188.8.131.52 [mem.poly.allocator.mem] as indicated:
[[nodiscard]] Tp* allocate(size_t n);[…]
-1- Effects: If
SIZE_MAX/ sizeof(Tp) < n, throws length_error. […]template<class T> T* allocate_object(size_t n = 1);
-8- Effects: Allocates memory suitable for holding an array of n objects of type T, as follows:
(8.1) — if
SIZE_MAX/ sizeof(T) < n, throws length_error,
(8.2) — otherwise equivalent to:return static_cast<T*>(allocate_bytes(n*sizeof(T), alignof(T)));