The test as in the repo also fails on my Mac (18 out of 20 times in a row). Adding a 'sleep 1' before the second set of echo commands makes it succeed (20 out of 20 times in a row).
On Mon, Sep 23, 2013 at 7:43 AM, Simon Peyton-Jones <simo...@microsoft.com>wrote: > No, it fails on Linux. Mostly but not invariably. Running it by hand (ie > with TEST=recomp013) fails 9 times out of 10 and succeeds once. Weird. > > Simon > > | -----Original Message----- > | From: Simon Marlow [mailto:marlo...@gmail.com] > | Sent: 23 September 2013 12:08 > | To: Gabor Greif; Simon Peyton-Jones > | Cc: Joachim Breitner; ghc-devs@haskell.org > | Subject: Re: recomp013 > | > | Is it failing on Windows only? It could be an issue with the > | granularity of timestamps. I think we use more accurate timestamps on > | Linux nowadays, whereas Windows is still using 1 second granularity. If > | that's the case, it probably needs a "sleep 1" somewhere. If the "sleep > | 1" didn't help, perhaps it wasn't in the right place - it needs to be > | before the second set of echo commands. > | > | On the subject of naming the test, we want two pieces of information in > | the name: > | - what it tests > | - the ticket number, if it's a regression test > | So rather than just renaming it to the ticket number (which would lose > | the information that it's a recomp test), I suggest moving all the > | recomp tests into their own directory first. It's really useful to have > | all the tests for a component together, so you can run them quickly when > | you're working on that component. > | > | Cheers, > | Simon > | > | On 19/09/2013 08:57, Gabor Greif wrote: > | > On 9/19/13, Simon Peyton-Jones <simo...@microsoft.com> wrote: > | >> I lied. Whether or not the 'sleep' is there, the test usually fails, > | but > | >> occasionally (one time in ten or so) succeeds. > | > > | > I am the originator of the bug report, and could consistently > | > reproduce it in a bigger project. Unfortunately I have no time > | > currently to dive into the issue, but I have it earmarked for later. > | > > | > Cheers, > | > > | > Gabor > | > > | > > | >> > | >> SImon > | >> > | >> | -----Original Message----- > | >> | From: ghc-devs [mailto:ghc-devs-boun...@haskell.org] On Behalf Of > | Simon > | >> | Peyton-Jones > | >> | Sent: 19 September 2013 12:50 > | >> | To: Joachim Breitner; ghc-devs@haskell.org > | >> | Subject: RE: recomp013 > | >> | > | >> | that makes it work.! > | >> | > | >> | | -----Original Message----- > | >> | | From: Joachim Breitner [mailto:m...@joachim-breitner.de] > | >> | | Sent: 19 September 2013 12:41 > | >> | | To: Simon Peyton-Jones; ghc-devs@haskell.org > | >> | | Subject: Re: recomp013 > | >> | | > | >> | | Dear Simon, > | >> | | > | >> | | Am Donnerstag, den 19.09.2013, 11:33 +0000 schrieb Simon Peyton- > | Jones: > | >> | | > =====> recomp013(normal) 89 of 114 [0, 0, 0] > | >> | | > cd ./recomp013 && $MAKE -s --no-print-directory recomp013 > | >> | | </dev/null >recomp013.run.stdout 2>recomp013.run.stderr > | >> | | > Actual stdout output differs from expected: > | >> | | > --- ./recomp013/recomp013.stdout 2013-09-18 > 12:38:22.000000000 > | >> | +0100 > | >> | | > +++ ./recomp013/recomp013.run.stdout 2013-09-19 > | 12:15:22.611120935 > | >> | | +0100 > | >> | | > @@ -3,5 +3,3 @@ > | >> | | > [2 of 3] Compiling B ( B.hs, B.o ) > | >> | | > [3 of 3] Compiling C ( C.hs, C.o ) > | >> | | > second run > | >> | | > -[2 of 3] Compiling B ( B.hs, B.o ) > | >> | | > -[3 of 3] Compiling C ( C.hs, C.o ) [B changed] > | >> | | > *** unexpected failure for recomp013(normal) > | >> | | > | >> | | It works here. So that means either two things: > | >> | | * that the bug described in #8247 is actually present in HEAD, > | but > | >> | | only under certain circumstances, or > | >> | | * that there is a timing issue with the update of B.hs. > | >> | | > | >> | | The latter seems to be more likely. I notice that other recomp- > | tests > | >> | | have a "sleep 1" before updating the file: If you insert that in > | >> | | recomp013/Makefile, does it go through for you? > | >> | | > | >> | | Greetings, > | >> | | Joachim > | >> | | > | >> | | -- > | >> | | Joachim "nomeata" Breitner > | >> | | m...@joachim-breitner.de * http://www.joachim-breitner.de/ > | >> | | Jabber: nome...@joachim-breitner.de * GPG-Key: 0x4743206C > | >> | | Debian Developer: nome...@debian.org > | >> | _______________________________________________ > | >> | ghc-devs mailing list > | >> | ghc-devs@haskell.org > | >> | http://www.haskell.org/mailman/listinfo/ghc-devs > | >> _______________________________________________ > | >> ghc-devs mailing list > | >> ghc-devs@haskell.org > | >> http://www.haskell.org/mailman/listinfo/ghc-devs > | >> > | > _______________________________________________ > | > ghc-devs mailing list > | > ghc-devs@haskell.org > | > http://www.haskell.org/mailman/listinfo/ghc-devs > | > > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://www.haskell.org/mailman/listinfo/ghc-devs >
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