std::pointer_safety

 

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低层内存管理 operator newoperator new[] operator deleteoperator delete[] nothrow_t nothrow new_handler set_new_handler get_new_handler (C++11) bad_alloc bad_array_new_length (C++11) align_val_t (C++17) destroying_delete_t (C++20) launder (C++17) 智能指针 unique_ptr (C++11) shared_ptr (C++11) weak_ptr (C++11) auto_ptr (C++17 前*) owner_less (C++11) owner_less<void> (C++17) owner_hash (C++26) owner_equal (C++26) enable_shared_from_this (C++11) bad_weak_ptr (C++11) default_delete (C++11) out_ptr_t (C++23) inout_ptr_t (C++23) 杂项 pointer_traits (C++11) to_address (C++20) addressof (C++11) align (C++11) assume_aligned (C++20) is_sufficiently_aligned (C++26) C 库 malloc calloc realloc free aligned_alloc (C++17)

 

在标头 <memory> 定义
enum class pointer_safety {      relaxed,      preferred,      strict };		(C++11 起) (C++23 移除)

有作用域枚举类型 pointer_safety 列出 C++ 所支持的指针安全模式。

枚举常量

枚举项	含义
pointer_safety::strict	只有安全派生的指针（指向以 new 分配对象或其子对象的指针）可解引用或解分配。垃圾收集器可能活跃。
pointer_safety::preferred	认为所有指针均合法且可以解引用或解分配。基于可达性的泄露检测器可能活跃。
pointer_safety::relaxed	认为所有指针均合法且可以解引用或解分配。

参阅

get_pointer_safety (C++11)(C++23 移除)

返回当前的指针安全模式 (函数)