[GHC] #13119: yesod-auth-1.4.15: ghc: panic! (the 'impossible' happened) Linker error

[GHC]

#13119: yesod-auth-1.4.15: ghc: panic! (the 'impossible' happened) Linker error
---------------------------------+---------------------------------
           Reporter:  mcmayer    |             Owner:
               Type:  bug        |            Status:  new
           Priority:  normal     |         Milestone:
          Component:  Compiler   |           Version:  7.10.3
           Keywords:  ghc panic  |  Operating System:  MacOS X
       Architecture:  x86        |   Type of failure:  None/Unknown
          Test Case:             |        Blocked By:
           Blocking:             |   Related Tickets:
Differential Rev(s):             |         Wiki Page:
---------------------------------+---------------------------------
 On Mac OS X 10.12.2 the [http://brew.sh] installation of Haskell `stack`
 is used (`brew install haskell-stack`).

 Next, the `yesod-simple` template is instantiated and built, e.g.

 {{{
 stack new my-web yesod-simple
 cd my-web
 stack build
 }}}

 The error looks like this:

 {{{
 ➜  my-web stack build
 yesod-auth-1.4.15: configure
 yesod-auth-1.4.15: build
 Progress: 1/4
 --  While building package yesod-auth-1.4.15 using:
       /Users/mmayer/.stack/setup-exe-cache/x86_64-osx/Cabal-
 simple_mPHDZzAJ_1.22.5.0_ghc-7.10.3 --builddir=.stack-
 work/dist/x86_64-osx/Cabal-1.22.5.0 build --ghc-options " -ddump-hi
 -ddump-to-file"
     Process exited with code: ExitFailure 1
     Logs have been written to: /private/tmp/my-web/.stack-work/logs/yesod-
 auth-1.4.15.log

     Configuring yesod-auth-1.4.15...
     Building yesod-auth-1.4.15...
     Preprocessing library yesod-auth-1.4.15...
     [ 1 of 12] Compiling Yesod.PasswordStore ( Yesod/PasswordStore.hs,
 .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/PasswordStore.o )

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/PasswordStore.hs:166:31: Warning:
         Defaulting the following constraint(s) to type ‘Integer’
           (Integral b0)
             arising from a use of ‘^’ at Yesod/PasswordStore.hs:166:31
           (Num b0)
             arising from the literal ‘32’ at
 Yesod/PasswordStore.hs:166:32-33
         In the first argument of ‘(-)’, namely ‘2 ^ 32’
         In the first argument of ‘(*)’, namely ‘(2 ^ 32 - 1)’
         In the second argument of ‘(>)’, namely ‘(2 ^ 32 - 1) * hLen’

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/PasswordStore.hs:419:1: Warning:
         Defined but not used: ‘toStrict’

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/PasswordStore.hs:422:1: Warning:
         Defined but not used: ‘fromStrict’
     [ 2 of 12] Compiling Yesod.Auth.Message ( Yesod/Auth/Message.hs,
 .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Message.o )

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/Auth/Message.hs:24:1: Warning:
         The import of ‘mappend’ from module ‘Data.Monoid’ is redundant

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/Auth/Message.hs:460:1: Warning:
         Pattern match(es) are overlapped
         In an equation for ‘finnishMessage’: finnishMessage Password = ...

     /private/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/stack44665
 /yesod-auth-1.4.15/Yesod/Auth/Message.hs:460:1: Warning:
         Pattern match(es) are non-exhaustive
         In an equation for ‘finnishMessage’:
             Patterns not matched: CurrentPassword
     [ 3 of 12] Compiling Yesod.Auth.Routes ( Yesod/Auth/Routes.hs, .stack-
 work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Routes.o )
     [ 4 of 12] Compiling Yesod.Auth       ( Yesod/Auth.hs, .stack-
 work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth.o )
     ghc: panic! (the 'impossible' happened)
       (GHC version 7.10.3 for x86_64-apple-darwin):
         Loading temp shared object failed:
 dlopen(/var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/ghc44706_0/libghc_21.dylib,
 5): no suitable image found.  Did find:
 /var/folders/mj/9fhlhndj3jl8mrd9czmhvz_00000gn/T/ghc44706_0/libghc_21.dylib:
 malformed mach-o: load commands size (35848) > 32768

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

 The same happens on `ghc-8.0.1` (`stack build yesod-auth`).

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13119>
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