#7178: Panic in coVarsOfTcCo
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Reporter: simonpj | Owner:
Type: bug | Status: new
Priority: highest | Milestone: 7.6.1
Component: Compiler | Version: 7.4.2
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Ganesh says: I'm getting the panic below when building darcs 2.8 with GHC
7.6. It'll take some effort to cut it down or give repro instructions for
an uncut-down version (I needed to hack a lot of underlying packages to be
able to even get as far as doing this build), so could someone confirm
that it's worth it before I do so? I can't spot anything already reporting
this in trac.
{{{
ghc.exe: panic! (the 'impossible' happened)
(GHC version 7.6.0.20120810 for i386-unknown-mingw32):
coVarsOfTcCo:Bind
cobox{v a6Czs} [lid]
= cobox{v a6CTr} [lid] `cast`
(<main:Darcs.Test.Patch.WithState.WithState{tc r1LL8}
model{tv tC} [tv]
..blah blah..
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7178>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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