was raw-pointer constructor of shared_ptr a mistake?

Question

In hindsight, given make_shared, would shared_ptr have a constructor that takes a raw pointer had it been introduced with C++11?

Are there stro

Answer 1

std::shared_ptr does much more than allocate objects on the heap.

Consider its use as an auto-closing shared file handle:

#include 
#include 


int main()
{
  auto closer = [](FILE* fp) { std::fclose(fp); };
  auto fp = std::shared_ptr(std::fopen("foo.txt", "r"),
                                  closer);
}