#5703: vector fails to compile due to simplifier ticks exhausted
------------------------------+---------------------------------------------
Reporter: tibbe | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.3 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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I thought the limit was raised in 7.4 but vector still fails to compile
using the current ghc-7.4 branch:
{{{
Configuring vector-algorithms-0.5.3...
Preprocessing library vector-algorithms-0.5.3...
Building vector-algorithms-0.5.3...
[1 of 9] Compiling Data.Vector.Algorithms.Common (
Data/Vector/Algorithms/Common.hs,
dist/build/Data/Vector/Algorithms/Common.o )
[2 of 9] Compiling Data.Vector.Algorithms.Radix (
Data/Vector/Algorithms/Radix.hs, dist/build/Data/Vector/Algorithms/Radix.o
)
[3 of 9] Compiling Data.Vector.Algorithms.Search (
Data/Vector/Algorithms/Search.hs,
dist/build/Data/Vector/Algorithms/Search.o )
[4 of 9] Compiling Data.Vector.Algorithms.Optimal (
Data/Vector/Algorithms/Optimal.hs,
dist/build/Data/Vector/Algorithms/Optimal.o )
[5 of 9] Compiling Data.Vector.Algorithms.Insertion (
Data/Vector/Algorithms/Insertion.hs,
dist/build/Data/Vector/Algorithms/Insertion.o )
[6 of 9] Compiling Data.Vector.Algorithms.AmericanFlag (
Data/Vector/Algorithms/AmericanFlag.hs,
dist/build/Data/Vector/Algorithms/AmericanFlag.o )
[7 of 9] Compiling Data.Vector.Algorithms.Heap (
Data/Vector/Algorithms/Heap.hs, dist/build/Data/Vector/Algorithms/Heap.o )
[8 of 9] Compiling Data.Vector.Algorithms.Intro (
Data/Vector/Algorithms/Intro.hs, dist/build/Data/Vector/Algorithms/Intro.o
)
ghc-stage2: panic! (the 'impossible' happened)
(GHC version 7.4.0.20111213 for x86_64-apple-darwin):
Simplifier ticks exhausted
When trying UnfoldingDone ( ghc-prim:GHC.Classes.||{v r1c} [gid] ::
ghc-prim:GHC.Types.Bool{(w) tc 3c}
->
ghc-prim:GHC.Types.Bool{(w) tc 3c}
->
ghc-prim:GHC.Types.Bool{(w) tc 3c} )
To increase the limit, use -fsimpl-tick-factor=N (default 100)
If you need to do this, let GHC HQ know, and what factor you needed
To see detailed counts use -ddump-simpl-stats
Total ticks: 46921
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5703>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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