Many new validate failures, "Synonym in TyConAppCo"-related

[Joachim Breitner]

Hi,

I suddenly get

        Unexpected failures:
           gadt                          T7294 [exit code non-0] (normal)
           indexed-types/should_compile  GADT1 [exit code non-0] (normal)
           indexed-types/should_compile  GADT11 [exit code non-0] (normal)
           indexed-types/should_compile  GADT3 [exit code non-0] (normal)
           indexed-types/should_compile  IndTypesPerf [bad exit code] (normal)
           indexed-types/should_compile  NonLinearLHS [exit code non-0] (normal)
           indexed-types/should_compile  Numerals [exit code non-0] (normal)
           indexed-types/should_compile  Roman1 [exit code non-0] (normal)
           indexed-types/should_compile  Simple9 [exit code non-0] (normal)
           indexed-types/should_compile  T2219 [exit code non-0] (normal)
           indexed-types/should_compile  T2627 [exit code non-0] (normal)
           indexed-types/should_compile  T3484 [exit code non-0] (normal)
           indexed-types/should_compile  T4935 [exit code non-0] (normal)
           indexed-types/should_compile  T7585 [exit code non-0] (normal)
           indexed-types/should_fail     T2664a [exit code non-0] (normal)
           polykinds                     PolyKinds10 [exit code non-0] (normal)
           polykinds                     PolyKinds12 [exit code non-0] (normal)
           polykinds                     T6002 [exit code non-0] (normal)
           simplCore/should_compile      T5329 [exit code non-0] (normal)
           simplCore/should_run          T5315 [exit code non-0] (optasm)
           typecheck/should_compile      T5490 [exit code non-0] (normal)
           typecheck/should_compile      T7196 [exit code non-0] (normal)
        
after these three changes were pushed:

        Changes to ghc:
        commit 214ad2d24cda4aaef541df3e213d5c4845f95c71
        Author: Peter Trommler <ptrommler at scm.org>
        Date:   Wed Apr 30 11:41:51 2014 +0200
        
            Fix globalRegMaybe for unregisterised build.
        
            In commit 83a003f globalRegMaybe will be called but panics
            for unregisterised compilers.
        
            In an unregisterised compiler there are no global registers
            so always return `Nothing`.
        
            Fixes #9055.
        
        commit 21f17d06aa5c33e639f1b0d37b4bf888b494c441
        Author: Simon Peyton Jones <simonpj at microsoft.com>
        Date:   Tue May 13 13:17:19 2014 +0100
        
            Fix invariant in mkAppCoFlexible
        
            mkAppCoFlexible was breaking the invariant that the head of a TyConAppCo cannot
            be a type synonym.  This small patch fixes it.
        
        commit 4cfc1fae11ec9a5c4b34ac747f0ce50f52423eba
        Author: Simon Peyton Jones <simonpj at microsoft.com>
        Date:   Tue May 13 13:15:45 2014 +0100
        
            Lint should check that TyConAppCo doesn't have a synonym in the tycon position
        
            That is why Lint didn't nail Trac #9102

Full log at
https://s3.amazonaws.com/archive.travis-ci.org/jobs/25063931/log.txt. It
seems that most, if not all, fail with a "Synonym in TyConAppCo" lint
error.


If Lint is correct here, then this may indicate further bugs are around.
But in that case the correct thing would be to have a ticket number for
that problem and mark all failing test cases as expect_broken – it’s the
only sensible way of having an always succeeding test suite in master.

So is the Lint check correct and this uncovered one or more bugs here,
or is the Lint check actually too restrictive?

Greetings,
Joachim


Greetings,
Joachim



-- 
Joachim “nomeata” Breitner
  mail at joachim-breitner.de • http://www.joachim-breitner.de/
  Jabber: nomeata at joachim-breitner.de  • GPG-Key: 0xF0FBF51F
  Debian Developer: nomeata at debian.org

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