[GHC] #14028: ghc panic: -fexternal-interpreter + .o + QuasiQuotes?

26 Jul 2017

      #14028: ghc panic: -fexternal-interpreter + .o + QuasiQuotes?
-------------------------------------+-------------------------------------
           Reporter:  blynn          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.2
           Keywords:  ghc panic      |  Operating System:  Linux
  impossible                         |
       Architecture:  x86_64         |   Type of failure:  Compile-time
  (amd64)                            |  crash or panic
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 1. Compile an object file with -fPIC, e.g:

 {{{
 cat > hello.c << EOF
 #include <stdio.h>
 void hi(){puts("Hello, World!");}
 EOF
 gcc -c -fPIC hello.c
 }}}

 2. Write Haskell that uses QuasiQuotes, e.g:

 {{{
 cat > h.hs << EOF
 {-# LANGUAGE QuasiQuotes #-}
 import Text.Heredoc (here)
 s :: String
 s = [here|goes nothing|]
 EOF
 }}}

 3. Compile with -fexternal-interpreter:

 {{{
 cabal install heredoc
 ghc -fexternal-interpreter h.hs hello.o
 }}}

 I saw:

 [1 of 1] Compiling Main             ( h.hs, h.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.2 for x86_64-unknown-linux):
         Loading temp shared object failed:
 /home/blynn/.local/lib/ghc-8.0.2/ghc-prim-0.5.0.0/libHSghc-
 prim-0.5.0.0-ghc8.0.2.so: undefined symbol: stg_thawArrayzh

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

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14028>
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