[GHC] #15105: `typecheckModule` from GHC API crashes on MacOS for files with TH

[GHC]

#15105: `typecheckModule` from GHC API crashes on MacOS for files with TH
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        Reporter:  harpocrates    |                Owner:  (none)
            Type:  bug            |               Status:  new
        Priority:  normal         |            Milestone:  8.6.1
       Component:  GHC API        |              Version:  8.4.2
      Resolution:                 |             Keywords:
Operating System:  MacOS X        |         Architecture:  Unknown/Multiple
 Type of failure:  Runtime crash  |            Test Case:
      Blocked By:                 |             Blocking:
 Related Tickets:                 |  Differential Rev(s):
       Wiki Page:                 |
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Comment (by darchon):

 We have some code in the Clash compiler to do with dynamic linking, which
 I expect is TH-related: https://github.com/clash-lang/clash-
 compiler/blame/d7dfef9d89b30d096370887899be24b9027914ac/clash-ghc/src-
 ghc/Clash/GHC/LoadModules.hs#L174-L179

 {{{
     let ghcDynamic = case lookup "GHC Dynamic" (DynFlags.compilerInfo
 dflags) of
                       Just "YES" -> True
                       _          -> False
     let dflags3 = if ghcDynamic then DynFlags.gopt_set dflags2
 DynFlags.Opt_BuildDynamicToo
                                 else dflags2
     _ <- GHC.setSessionDynFlags dflags3
 }}}

 I don't have access to an OS X machine, so could you check if setting the
 {{{Opt_BuildDynamicToo}}} flag fixes the TH issue?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15105#comment:2>
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