Is it safe to dereference a temporary std::shared_ptr?

Question

Example:

std::shared_ptr<std::string> create_shared_string()
{
  return std::shared_ptr<std::string>(new std::string("hello"));
}

std::cout << *create_shared_str() << std::endl;

My fear is that the shared_ptr is destroyed and the reference counter goes to zero as soon as the dereference is complete and thus the returned raw pointer is no longer safe.

Add it as an answer maybe? ;) – monoceres May 26 '13 at 19:43 — monoceres, May 26 '13 at 19:43

score 7 · Accepted Answer · edited May 23 '17 at 11:46

7

what is the lifetime of C++ temporary object

in this case, the returned std::shared_ptr will not be destructed until std::cout << std::endl; is finished, so you can dereference it safely.

edited May 23 '17 at 11:46

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answered May 26 '13 at 19:46

yngccc

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Is it safe to dereference a temporary std::shared_ptr?

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