[GHC] #10146: Clang CPP adds extra newline character

[GHC]

#10146: Clang CPP adds extra newline character
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        Reporter:  mpickering        |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:  cpp
Operating System:  MacOS X           |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Changes (by rwbarton):

 * status:  new => infoneeded


Comment:

 How is this a GHC issue? That is, what change to GHC would you like to see
 here?

 It sounds like you would like clang's CPP to be "fixed", but I don't think
 it is really buggy, since the semantics of CPP are defined in terms of
 tokenized C programs, and adding a trailing newline does not change that
 tokenization. So, I would not be too hopeful about submitting a bug
 report, but you could try.

 I also don't really understand what you are trying to do at all here,
 isn't the CPP phase quite irreversible regardless of this trailing newline
 issue? Could you go into more detail about your use case?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10146#comment:2>
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