I see that we’re doing a 6.10.1 release. Based on my reading of the message below, this bug appears unlikely to affect my students, and my plan is to not bug my sysadmins to install this release. I’m writing just to make sure that I’m not missing some obvious impact that this bug would have on my students (whose use does include rsound, which communicates using data buffers & library calls).
Thanks for a heads-up if I’m wrong! John > Begin forwarded message: > > From: Matthew Flatt <[email protected]> > Subject: Re: [racket-users] Racket v6.10 > Date: August 15, 2017 at 4:06:32 PM PDT > To: [email protected] > > At Mon, 31 Jul 2017 16:00:01 -0500, Vincent St-Amour wrote: >> * Internally, Racket's intermediate compatibility layer over >> operating-system facilities has been moved into its own library, >> "rktio" [...] we expect a new glitch or >> two in less-common build and execution environments. > > James Bornholt discovered and repaired a rktio-related bug that is > worse than the expected glitch: > > https://github.com/racket/racket/issues/1769 > > The bug affects programs that > > * are running on Linux; > > * use non-socket, OS-level streams that can block on input or output, > such as pipes created by `subprocess` or `system` to communicate > with another process; > > * attempt an input or output operation when the stream is not ready > for reading or writing; and > > * close the stream before it is used in a ready state. > > Under those circumstances, a stream that is created later can be > confused internally with the old one and be treated as not ready, even > if it is ready. > > Sockets (including TCP connections) are not affected by the bug. > Programs running on a platform other than Linux are also unaffected. > > We haven't yet decided on further action, such as a patched release. If > you think your program might be affected, the release managers would > appreciate a brief note letting us know --- either on-list or off-list > --- since that will help us gauge the bug's impact. > > Thanks again to James for tracking down the problem! > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-dev/b41d0034-6d61-4e6f-b0a9-fa53275722e5%40mtasv.net. For more options, visit https://groups.google.com/d/optout.
