[GHC] #15207: bad dwarf frame in stgRun.c when compiled with with gcc on mac and assembled by as/gcc/clang (aka apple clang assembler)

[GHC]

#15207: bad dwarf frame in stgRun.c when compiled with with gcc on mac and
assembled by as/gcc/clang (aka apple clang assembler)
-------------------------------------+-------------------------------------
        Reporter:  carter            |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Runtime System    |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4781
       Wiki Page:                    |
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Comment (by awson):

 Don't know anything about Apple's clang, but exactly the same way behaves
 Windows msvc‑abi‑targeted clang – it inserts nothing.

 Generally, clang is able to mimic both gcc behaviour *and* native platform
 toolset behavior, and tries to be gcc compatible when targeting gnu
 triplet and native toolset compatible when targeting native triplet.

 Thus, I believe changing `#if defined(__clang__)` to `#if
 defined(__clang__) && !defined (__GNUC__)` should suffice.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15207#comment:21>
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