https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80538
--- Comment #2 from zulliger at indel dot ch --- Thank's for clarifying! If sleep(0)'s behaviour is undefined regarding 'thread yielding', then my whole point is wrong. (It seems I didn't read stackoverflow & Co carefully enough, as the statement I saw was specific to Microsofts Sleep(int MilliSeconds) which indeed yields).
