Question

I have structure

NewStruct1
{
  uint factor;
  NewStruct2 assert[3];
  char name[21];

}

and another

NewStruct2 
{
  uint newFactor;
  char newName[21];
}

Here I am calling a function ‘func’ in a dll, as follows

NewStruct1 var;

func(&var);

The function is

func(NewStruct1 *v)
{
  std::string myName = "werttt";
  strcpy_s(v->assert[0].newName, myName.size(), myName.c_str());
}

While doing so strcpy_s gives (L"Buffer is too small" && 0) even though there is enough space to accommodate. Can any body please help me on this?

Answer 1

The second argument of strcpy_s must be number of elements in destination, that is, 21 (number of chars in in newName), not the length of the source.