https://issues.dlang.org/show_bug.cgi?id=6989
--- Comment #6 from Andrej Mitrovic <andrej.mitrov...@gmail.com> --- (In reply to Sean Kelly from comment #5) > Providing a provably unique > identifier to each thread across the entire run of the program would be > expensive. Isn't starting a thread expensive enough that incrementing a simple counter should be good enough to generate an ID? --