https://issues.dlang.org/show_bug.cgi?id=15939
--- Comment #17 from Илья Ярошенко <ilyayaroshe...@gmail.com> --- (In reply to Martin Nowak from comment #16) > (In reply to Aleksei Preobrazhenskii from comment #13) > > All suspending signals were delivered, but it seems that number of calls to > > sem_wait was different than number of calls to sem_post (or something > > similar). I have no reasonable explanation for that. > > > > It doesn't invalidate the hypothesis that RT signals helped with original > > deadlock though. > > To be hypothesis it must verifyable, but as we can't explain why RT signals > would help, it's not a real hypothesis. Can anyone somewhat repeatedly > reproduce the issue? It is not easy to catch it on PC. The bug was found when program was running on multiple CPUs on multiple servers during a day. > I would suspect that this issue came with the recent parallel suspend > feature. > https://github.com/dlang/druntime/pull/1110, that would affect dmd >= > 2.070.0. > Could someone test their code with 2.069.2? Yes, the bug was found first for 2.069. --