namespace std { class bad_alloc; class bad_array_new_length; enum class align_val_t : size_t {}; struct nothrow_t { explicit nothrow_t() = default; }; extern const nothrow_t nothrow; using new_handler = void (*)(); new_handler get_new_handler() noexcept; new_handler set_new_handler(new_handler new_p) noexcept; // [ptr.launder], pointer optimization barrier template <class T> constexpr T* launder(T* p) noexcept; // [hardware.interference], hardware interference size inline constexpr size_t hardware_destructive_interference_size = implementation-defined; inline constexpr size_t hardware_constructive_interference_size = implementation-defined; } void* operator new(std::size_t size); void* operator new(std::size_t size, std::align_val_t alignment); void* operator new(std::size_t size, const std::nothrow_t&) noexcept; void* operator new(std::size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept; void operator delete(void* ptr) noexcept; void operator delete(void* ptr, std::size_t size) noexcept; void operator delete(void* ptr, std::align_val_t alignment) noexcept; void operator delete(void* ptr, std::size_t size, std::align_val_t alignment) noexcept; void operator delete(void* ptr, const std::nothrow_t&) noexcept; void operator delete(void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept; void* operator new[](std::size_t size); void* operator new[](std::size_t size, std::align_val_t alignment); void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; void* operator new[](std::size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept; void operator delete[](void* ptr) noexcept; void operator delete[](void* ptr, std::size_t size) noexcept; void operator delete[](void* ptr, std::align_val_t alignment) noexcept; void operator delete[](void* ptr, std::size_t size, std::align_val_t alignment) noexcept; void operator delete[](void* ptr, const std::nothrow_t&) noexcept; void operator delete[](void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept; void* operator new (std::size_t size, void* ptr) noexcept; void* operator new[](std::size_t size, void* ptr) noexcept; void operator delete (void* ptr, void*) noexcept; void operator delete[](void* ptr, void*) noexcept;
See also: [intro.memory], [basic.stc.dynamic], [expr.new], [expr.delete], [class.free], [memory].