Opened 6 years ago

Closed 6 years ago

## #5703 closed bug (duplicate)

# vector fails to compile due to simplifier ticks exhausted

Reported by: | tibbe | Owned by: | |
---|---|---|---|

Priority: | normal | Milestone: | |

Component: | Compiler | Version: | 7.3 |

Keywords: | Cc: | ||

Operating System: | Unknown/Multiple | Architecture: | Unknown/Multiple |

Type of failure: | None/Unknown | Test Case: | |

Blocked By: | Blocking: | ||

Related Tickets: | Differential Rev(s): | ||

Wiki Page: |

### Description

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

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Duplicate of #5539