On Sunday, 31 May 2020 at 16:57:06 UTC, Steven Schveighoffer wrote: > I can't imagine much of druntime working at all without TLS. > Indeed, it is a requirement these days. > TLS is evil for async/await when any thread can execute any fiber (case where fiber tied to thread is wrong/dead version of async/await cuz 1st thread has 1000 fibers and 2nd only 10)