Sorry for the typos in my previous email. #16969 -> #15696 (https://ghc.haskell.org/trac/ghc/ticket/15696) regressions -> regression tests Phab:5201 -> Phab:D5201 (https://phabricator.haskell.org/D5201)
By "the primop" I mean dataToTag#. Ömer Ömer Sinan Ağacan <[email protected]>, 27 Eki 2018 Cmt, 10:23 tarihinde şunu yazdı: > > Hi all, > > Just a quick update about #16969. > > The primop itself is buggy in 8.4 (and it should be buggy even in older > versions -- although I haven't confirmed this) and 2 of the 3 regressions > added > for it currently fail with GHC 8.4.4. I don't know what the plan is for fixing > it in 8.4, Ben may say more about this, but I'm guessing that we'll see > another > 8.4 release. > > So if you're using the primop directly, just don't! If you're not using it > directly, then as David says the bug is much harder to trigger in GHC 8.4 (and > even older versions) than in GHC 8.6, but we don't know if it's _impossible_ > to > trigger in GHC 8.4 and older versions. > > We fixed the bug in GHC HEAD weeks ago (with Phab:5201), current investigation > in #15696 is not blocking any releases, we're just tying up some loose ends > and > doing refactoring to handle some similar primops more uniformly. This is only > refactoring and documentation -- known bugs are already fixed. > > (I now realize that it would've been better to do this in a separate ticket to > avoid confusion) > > Ömer > > Artem Pelenitsyn <[email protected]>, 27 Eki 2018 Cmt, 00:18 > tarihinde şunu yazdı: > > > > David, when you say "dataToTag# issue", you mean #15696? It seems from the > > discussion there that it is still under investigation. > > > > -- > > Best, Artem > > > > On Fri, 26 Oct 2018 at 17:02 David Feuer <[email protected]> wrote: > >> > >> On Fri, Oct 26, 2018 at 4:43 PM Carter Schonwald > >> <[email protected]> wrote: > >> > > >> > Hey David, i'm looking at the git history andit doesn't seem to have any > >> > commits between 8.4.3 and 8.4.4 related to the dataToTag issue > >> > > >> > does any haskell code in the while trigger the bug on 8.4 series? > >> > >> I don't think anyone knows. It seems clear that it's considerably > >> easier to trigger the bug in 8.6, but > >> as far as I can tell, there's no reason to believe that it couldn't be > >> triggered by realistic code in > >> 8.4. > >> _______________________________________________ > >> ghc-devs mailing list > >> [email protected] > >> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs > > > > _______________________________________________ > > ghc-devs mailing list > > [email protected] > > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs _______________________________________________ ghc-devs mailing list [email protected] http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
