Re: Please don’t break travis

[Matthew Pickering]

I made #12930 to track this.

Matt

On Fri, Dec 2, 2016 at 11:22 PM, Joachim Breitner
<mail at joachim-breitner.de> wrote:
> Hi,
>
> again, Travis is failing to build master since a while. Unfortunately,
> only the author of commits get mailed by Travis, so I did not notice it
> so far. But usually, when Travis reports a build failure, this is
> something actionable! If in doubt, contact me.
>
> The breakage at the moment occurs only with -DDEBUG on:
>
>     Compile failed (exit code 1) errors were:
>     ghc-stage2: panic! (the 'impossible' happened)
>       (GHC version 8.1.20161118 for x86_64-unknown-linux):
>             No match in record selector is_iloc
>
>     Please report this as a GHC bug:      http://www.haskell.org/ghc/reportabug
>
>
> *** unexpected failure for rn017(normal)
> Compile failed (exit code 1) errors were:
> ghc-stage2: panic! (the 'impossible' happened)
>   (GHC version 8.1.20161118 for x86_64-unknown-linux):
>         No match in record selector is_iloc
>
> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
>
>
> *** unexpected failure for T7672(normal)
>
> And started appearing, unless I am mistaken, with
>
>     From: Matthew Pickering <    matthewtpickering at gmail.com    >
>     Date: Fri, 18 Nov 2016 16:28:30 +0000
>     Subject: [PATCH] Optimise whole module exports
>
>     We directly build up the correct AvailInfos rather than generating
>     lots of singleton instances and combining them with expensive calls to
>     unionLists.
>
>     There are two other small changes.
>
>     * Pushed the nubAvails call into the explicit export list
>       branch as we construct them correctly and uniquely ourselves.
>     * fix_faminst only needs to check the first element of the export
>       list as we maintain the (yucky) invariant that the parent is the
>       first thing in it.
>
>     Reviewers: simonpj, austin, bgamari
>
>     Reviewed By: simonpj, bgamari
>
>     Subscribers: simonpj, thomie, niteria
>
>     Differential Revision:     https://phabricator.haskell.org/D2657
>
> Matthew, can you verify that this is a regression introduce here?
>
> Greetings,
> Joachim
>
> --
> Joachim “nomeata” Breitner
>   mail at joachim-breitner.de • https://www.joachim-breitner.de/
>   XMPP: nomeata at joachim-breitner.de • OpenPGP-Key: 0xF0FBF51F
>   Debian Developer: nomeata at debian.org
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