对NativePointer进行分步readPointer，得到的结果会变化

简要说明：

将定义为std::string ArtMethod::PrettyMethod(ArtMethod* m, bool with_signature)的方法

通过NativeFunction绑定，将返回值设为单个pointer，尝试读取对应的string内容

发现对返回的pointer分步读取（即打印readPointer结果）的值会产生变化

伪代码示意

可以正常获取function_name，解构方式

let std_results: NativePointer = PrettyMethod_func(art_method_ptr, 1);
let PrettyMethod_func = new NativeFunction(PrettyMethod_ptr, "pointer", ["pointer", "bool"]);
let [ptr1, ptr2, ptr3] = [std_results.readU64(), std_results.add(Process.pointerSize).readU64(), std_results.add(Process.pointerSize * 2).readU64()]
let std_string_ptr = Memory.alloc(Process.pointerSize * 3);
std_string_ptr.writeU64(ptr1);
std_string_ptr.add(Process.pointerSize * 1).writeU64(ptr2);
std_string_ptr.add(Process.pointerSize * 2).writeU64(ptr3);
let function_name = readStdString(std_string_ptr);

无法正常获取function_name，直接获取方式

let std_results: NativePointer = PrettyMethod_func(art_method_ptr, 1);
let PrettyMethod_func = new NativeFunction(PrettyMethod_ptr, "pointer", ["pointer", "bool"]);
let std_string_ptr = Memory.alloc(Process.pointerSize * 3);
std_string_ptr.writeU64(std_results.readU64());
std_string_ptr.add(Process.pointerSize * 1).writeU64(std_results.add(Process.pointerSize).readU64());
std_string_ptr.add(Process.pointerSize * 2).writeU64(std_results.add(Process.pointerSize * 2).readU64());
let function_name = readStdString(std_string_ptr);

经过测试发现，如果分步对std_results进行了readxx/readPointer的操作，那么其结果会变化

SeeFlowerX/读取疑问.md