C ++中SecureZeroMemory中的参数不匹配

Question

char *chBuff = new char[nBufferSize];
    ::SecureZeroMemory(chBuff, sizeof(chBuff));

我使用了上面的代码但得到以下错误

Wrong sizeof argument (SIZEOF_MISMATCH)
suspicious_sizeof: Passing argument chBuff of type char * and argument 4UL /* sizeof (chBuff) */ to function RtlSecureZeroMemory is suspicious.

我应该进行类型转换吗？如果是这样的话？

SecureZeroMemory的语法：

PVOID SecureZeroMemory(
  _In_  PVOID ptr,
  _In_  SIZE_T cnt
);

Answer 1

sizeof（char *）将为您提供指针的大小，而不是使用以下内容：

char *chBuff = new char[nBufferSize];
    ::SecureZeroMemory(chBuff, sizeof(char)*nBufferSize);