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  • Glasgow Haskell Compiler
  • GHCGHC
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  • #11550
Closed
Open
Created Feb 06, 2016 by Sergei Trofimovich@trofiReporter

ghc-HEAD -DDEBUG is broken (possiby by D1880)

Was found when tried to build with

BuildFlavour = devel2

ghc-validate $ LANG=C make V=0

  HC [stage 2] libraries/parallel/dist-install/build/Control/Seq.o
WARNING: file compiler/stgSyn/CoreToStg.hs, line 250
  using False True
ghc-stage2: panic! (the 'impossible' happened)
  (GHC version 8.1.20160206 for x86_64-unknown-linux):
        ASSERT failed!
  CallStack (from HasCallStack):
  assertPprPanic, called at compiler/stgSyn/CoreToStg.hs:216:59 in ghc:CoreToStg
  using

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

https://travis-ci.org/ghc/ghc/builds

suggests

changeset:4f9967aa

might be at fault.

Reverting it on top of master fixes devel2 build.

Trac metadata
Trac field Value
Version 8.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
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Blocking
CC osa1, skvadrik
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