Build failures with -DDEBUG

[Simon Peyton Jones]

Very helpful thanks.  TcCoercibleFail is known to time out (for decent reasons) with –DDEBUG (see comments in the dsource file)

I’l look into the PatSyn thing

Simon

From: Thomas Miedema [mailto:thomasmiedema at gmail.com]
Sent: 18 February 2016 18:41
To: Simon Peyton Jones <simonpj at microsoft.com>; ghc-devs at haskell.org
Subject: Build failures with -DDEBUG

Simon,

the commits you pushed today don't validate with -DDEBUG.

Unexpected failures:

   patsyn/should_compile  MoreEx [exit code non-0] (normal)

   patsyn/should_compile  T11224b [exit code non-0] (normal)

   polykinds              MonoidsTF [exit code non-0] (normal)

   polykinds              T11480b [exit code non-0] (normal)

   polykinds              T11523 [exit code non-0] (normal)

   typecheck/should_fail  TcCoercibleFail [stderr mismatch] (normal)



TcCoercibleFail timed out, and the others all hit the following debug assert:


=====> T11224b(normal) 2510 of 5029 [0, 0, 0]
Compile failed (status 256) errors were:
ghc-stage2: panic! (the 'impossible' happened)
  (GHC version 8.1.20160218 for x86_64-unknown-linux):
          ASSERT failed!
  CallStack (from HasCallStack):
  assertPprPanic, called at compiler/types/TyCoRep.hs:1932:56 in ghc:TyCoRep
  checkValidSubst, called at compiler/types/TyCoRep.hs:1991:17 in ghc:TyCoRep
  substTys, called at compiler/types/TyCoRep.hs:2012:14 in ghc:TyCoRep
  substTheta, called at compiler/typecheck/TcPatSyn.hs:255:20 in ghc:TcPatSyn
  in_scope InScope {d_ap0 c_apv}
  tenv [ap1 :-> c_apv[tau:5]]
  tenvFVs [aps :-> t_aps[tau:1], apv :-> c_apv[tau:5]]
  cenv []
  cenvFVs []
  tys []
  cos []


Complete log from Travis: https://s3.amazonaws.com/archive.travis-ci.org/jobs/110115377/log.txt<https://na01.safelinks.protection.outlook.com/?url=https%3a%2f%2fs3.amazonaws.com%2farchive.travis-ci.org%2fjobs%2f110115377%2flog.txt&data=01%7c01%7csimonpj%40064d.mgd.microsoft.com%7c4cc9af48558b4d699a0f08d3389306e2%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=Exe5inT9kmsMyourC2pWgynMt56p6UglF5lXqARY8E8%3d>

-- Thomas
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