[GHC] #13501: TH segmentation fault on Linux when calling function from another package

[GHC]

#13501: TH segmentation fault on Linux when calling function from another package
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        Reporter:  jmaki             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             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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Description changed by jmaki:

Old description:

> The bug was hit when using Buck (buckbuild.com) to build. I had two
> packages, A containing a
> single module with a TH function of type `TH.Q [TH.Dec]` and module B
> importing A it and calling that function at top-level. I've attached a
> tarball that reproduces the problem.
>
> I've verified that the problem occurs with 7.10.3, 8.0.2 and a semi-
> recent GHC HEAD from @bitonic.
> The issue doesn't occur on macOS and does not occur when the modules are
> in a single package or if the package is compiled as a shared library.
> The problem also does not occur when using stack, so this is likely
> related to how buck creates packages.

New description:

 The bug was hit when using Buck (buckbuild.com) to build. I had two
 packages, A containing a
 single module with a TH function of type `TH.Q [TH.Dec]` and module B
 importing A it and calling that function at top-level. I've attached a
 tarball that reproduces the problem using just 'ghc', 'ghc-pkg' and 'ar'.

 I've verified that the problem occurs with 7.10.3, 8.0.2 and a semi-recent
 GHC HEAD from @bitonic.
 The issue doesn't occur on macOS and does not occur when the modules are
 in a single package or if the package is compiled as a shared library. The
 problem also does not occur when using stack, so this is likely related to
 how buck creates packages.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13501#comment:1>
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