[GHC] #13956: ghc panic compiling lame-0.1.1
GHC
ghc-devs at haskell.org
Mon Jul 10 22:13:22 UTC 2017
#13956: ghc panic compiling lame-0.1.1
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Reporter: uznx | Owner: (none)
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 8.2.1-rc3
Keywords: | Operating System: Linux
Architecture: x86_64 | Type of failure: Compile-time
(amd64) | crash or panic
Test Case: | Blocked By:
Blocking: | Related Tickets:
Differential Rev(s): | Wiki Page:
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Compiling the package lame-0.1.1 using cabal, with profiling:
[2 of 2] Compiling Codec.Audio.LAME ( Codec/Audio/LAME.hs,
dist/build/Codec/Audio/LAME.p_o )
ghc: panic! (the 'impossible' happened)
(GHC version 8.2.0.20170704 for x86_64-unknown-linux):
Simplifier ticks exhausted
When trying UnfoldingDone lvl_soT9
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: 504681
Call stack:
CallStack (from HasCallStack):
prettyCurrentCallStack, called at
compiler/utils/Outputable.hs:1133:58 in ghc:Outputable
callStackDoc, called at compiler/utils/Outputable.hs:1137:37 in
ghc:Outputable
pprPanic, called at compiler/simplCore/SimplMonad.hs:199:31 in
ghc:SimplMonad
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
This is a regression; the package compiles fine with GHC 8.0.2
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13956>
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