[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:  high           |            Milestone:  8.6.3
       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 bgamari):

 I have been looking into this with Dario Bertini at Munihac. It appears
 that `___gmp_rands` is a "common" symbol. With linker debugging enabled I
 see the following output,
 {{{
 relocateSection: making jump island for ___stack_chk_guard, extern = 1,
 X86_64_RELOC_GOT
 lookupSymbol: looking up ___stack_chk_guard
 lookupSymbol: symbol not found
 lookupSymbol: looking up ___stack_chk_guard with dlsym
 relocateSection: looked up ___stack_chk_guard, external X86_64_RELOC_GOT
 or X86_64_RELOC_GOT_LOAD
                : addr = 0x7fffabebd070
 relocateSection: value = 0x10e3e1d50
 relocateSection: relocation 8481
                : type      = 3
                : address   = 283153
                : symbolnum = 4303
                : pcrel     = 1
                : length    = 2
                : extern    = 1
                : type      = 3
 relocateSection: length = 2, thing = 0, baseValue = 0x10e3125f5
 relocateSection: making jump island for ___gmp_rands, extern = 1,
 X86_64_RELOC_GOT
 lookupSymbol: looking up ___gmp_rands
 lookupSymbol: symbol not found
 lookupSymbol: looking up ___gmp_rands with dlsym
 relocateSection: looked up ___gmp_rands, external X86_64_RELOC_GOT or
 X86_64_RELOC_GOT_LOAD
                : addr = 0x0
 ghc-stage2:
 lookupSymbol failed in relocateSection (RELOC_GOT)
 /Users/berdario/Projects/ghc/libraries/integer-gmp/dist-install/build
 /HSinteger-gmp-1.0.2.0.o: unknown symbol `___gmp_rands'

 removeLibrarySearchPath: ptr = `0x0'
 }}}

 In principle common symbols do appear to be handled by `ocGetNames_MachO`.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15105#comment:13>
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