context-stack GHC 7.0.1 Release Candidate 1

[Simon Peyton-Jones]

We found another occurrence of very poor performance in a smaller program.  We have a nice fix; but won't be able to commit for a few days

Let's hope it fixes your problem too!

Simon

|  -----Original Message-----
|  From: glasgow-haskell-users-bounces at haskell.org [mailto:glasgow-haskell-users-
|  bounces at haskell.org] On Behalf Of Christian Maeder
|  Sent: 27 September 2010 15:32
|  Cc: glasgow-haskell-users at haskell.org
|  Subject: Re: context-stack GHC 7.0.1 Release Candidate 1
|  
|  Am 27.09.2010 15:12, schrieb Christian Maeder:
|  > I wasn't able to compile yet. After 4 minutes it failed with:
|  >
|  >   Context reduction stack overflow; size = 46
|  >
|  > and I'm increasing the context-stack further.
|  
|  It goes through with -fcontext-stack=100, but the compilation time is
|  unacceptable. 55 minutes for the following two files on x86_64:
|  
|  [381 of 536] Compiling Logic.Comorphism ( Logic/Comorphism.hs,
|  Logic/Comorphism.o )
|  [382 of 536] Compiling Logic.Modification ( Logic/Modification.hs,
|  Logic/Modification.o )
|  
|  And the second one isn't finished yet.
|  
|  C.
|  >
|  > Maybe this is related to:
|  > http://hackage.haskell.org/trac/ghc/ticket/816
|  >
|  > (ghc-6.10.x or ghc-6.12.x have no such problems.)
|  >
|  > Cheers Christian
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