[thread.thread.class] missing declaration of swap(thread&,thread&)

[sdutoit]

From an email to cxxeditor@:

I suggest to add in
30.3.1 Class thread [thread.thread.class]
right after the declaration of class thread but still inside
namespace std a declaration of the global swap():

namespace std {
  class thread {
    ...
  };

HERE:

  // 30.3.1.7 specialized algorithms:
  void swap(thread& x, thread& y) noexcept;
}

As it is usually done for container and other classes.

[jwakely]

swap(thread&, thread&) is declared in the 30.3 [thread.threads] synopsis of the <thread> header, which is where it belongs because it's not a member of std::thread

[sdutoit]

@jwakely Thanks - I agree. The containers are different because they have a separate mini-synopsis from the header synopsis that also introduces the class definition, but that's not the case here. A bit inconsistent perhaps but not something that needs to be fixed now.