c++ - 静态分析给出“取消引用, 已知为 nullptr"

Question

我在一个项目上使用 Coverity 运行静态分析，而我遇到了该工具报告的这个错误：

Dereferencing <storage from new>, which is known to be nullptr

代码片段是：

typedef struct envelope
{
      char *message;
      void *context;
      bool response;
}envelopeRef;

int main()
{
   /* here coverity tells that
      1. returned_null: operator new returns nullptr (checked 46 out of 52 times)
      2. var_assigned: Assigning: <storage from new> = nullptr return value from operator new
      3. dereference: Dereferencing <storage from new>, which is known to be nullptr.
   */
    envelopeRef *h = new (std::nothrow)envelopeRef();
    if(nullptr != h)
    {
       //do something
       delete h;
    }
}

我在这里做错了什么？

标签： c++static-analysiscoverity