[GHC] #8276: Building Haddock documentation panics with perf build on x86_64 Linux

[GHC]

#8276: Building Haddock documentation panics with perf build on x86_64 Linux
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        Reporter:  jstolarek           |            Owner:  thoughtpolice
            Type:  bug                 |           Status:  closed
        Priority:  highest             |        Milestone:  7.8.1
       Component:  Documentation       |          Version:  7.7
      Resolution:  fixed               |         Keywords:
Operating System:  Unknown/Multiple    |     Architecture:  x86_64 (amd64)
 Type of failure:  Compile-time crash  |       Difficulty:  Unknown
       Test Case:                      |       Blocked By:
        Blocking:                      |  Related Tickets:
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Comment (by RyanGlScott):

 I still experience this panic on GHC 7.8.2 with Windows x86_64:

 {{{
 $ ghci
 GHCi, version 7.8.2: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer-gmp ... linking ... done.
 Loading package base ... linking ... done.
 λ> import StaticFlags
 λ> import Data.IORef
 λ> readIORef v_opt_C_ready
 Loading package array-0.5.0.0 ... linking ... done.
 Loading package deepseq-1.3.0.2 ... linking ... done.
 Loading package bytestring-0.10.4.0 ... linking ... done.
 Loading package containers-0.5.5.1 ... linking ... done.
 Loading package Win32-2.3.0.2 ... linking ... done.
 Loading package filepath-1.3.0.2 ... linking ... done.
 Loading package old-locale-1.0.0.6 ... linking ... done.
 Loading package time-1.4.2 ... linking ... done.
 Loading package directory-1.2.1.0 ... linking ... done.
 Loading package pretty-1.1.1.1 ... linking ... done.
 Loading package process-1.2.0.0 ... linking ... done.
 Loading package Cabal-1.18.1.3 ... linking ... done.
 Loading package binary-0.7.1.0 ... linking ... done.
 Loading package bin-package-db-0.0.0.0 ... linking ... done.
 Loading package hoopl-3.10.0.1 ... linking ... done.
 Loading package hpc-0.6.0.1 ... linking ... done.
 Loading package template-haskell ... linking ... done.
 Loading package transformers-0.3.0.0 ... linking ... done.
 Loading package ghc-7.8.2 ... linking ... done.
 False
 λ> staticFlags
 ghc.exe: panic! (the 'impossible' happened)
   (GHC version 7.8.2 for x86_64-unknown-mingw32):
         Static flags have not been initialised!
         Please call GHC.parseStaticFlags early enough.

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

 But not with GHC 7.8.2 on Linux x86_64:

 {{{
 $ ghci
 GHCi, version 7.8.2: http://www.haskell.org/ghc/  :? for help
 Loading package ghc-prim ... linking ... done.
 Loading package integer-gmp ... linking ... done.
 Loading package base ... linking ... done.
 λ> import StaticFlags
 λ> import Data.IORef
 λ> readIORef v_opt_C_ready
 Loading package array-0.5.0.0 ... linking ... done.
 Loading package deepseq-1.3.0.2 ... linking ... done.
 Loading package bytestring-0.10.4.0 ... linking ... done.
 Loading package containers-0.5.5.1 ... linking ... done.
 Loading package filepath-1.3.0.2 ... linking ... done.
 Loading package old-locale-1.0.0.6 ... linking ... done.
 Loading package time-1.4.2 ... linking ... done.
 Loading package directory-1.2.1.0 ... linking ... done.
 Loading package pretty-1.1.1.1 ... linking ... done.
 Loading package process-1.2.0.0 ... linking ... done.
 Loading package Cabal-1.18.1.3 ... linking ... done.
 Loading package binary-0.7.1.0 ... linking ... done.
 Loading package bin-package-db-0.0.0.0 ... linking ... done.
 Loading package hoopl-3.10.0.1 ... linking ... done.
 Loading package hpc-0.6.0.1 ... linking ... done.
 Loading package template-haskell ... linking ... done.
 Loading package transformers-0.3.0.0 ... linking ... done.
 Loading package ghc-7.8.2 ... linking ... done.
 True
 λ> staticFlags
 []
 }}}

 This has caused problems for me when running programs such as
 [https://github.com/ku-fpg/hermit/ HERMIT] on Windows, since at some
 point, {{{parseStaticFlagsFull}}} seems to be called during program
 execution. A workaround is to call {{{initStaticOpts}}} manually somewhere
 in the program, but I feel like that shouldn't be necessary.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8276#comment:43>
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