[GHC] #11951: GHC formula is segfaulting with Xcode 7.3

[GHC]

#11951: GHC formula is segfaulting with Xcode 7.3
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           Reporter:  ilovezfs       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.10.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 This affects Xcode 7.3 but not Xcode 7.2.1.

 make[1]: *** [compiler/stage2/dll-split.stamp] Segmentation fault: 11

 For >= Xcode 7.3 (also the 7.3 CLT) the directory

 "Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin"

 now has the old `nm` renamed `nm-classic` and `nm` is a symlink to `llvm-
 nm`. By redirecting the build system's use of `nm` to use `nm-classic` the
 segfault does not occur.

 I'm not sure what goes wrong with `llvm-nm` but it would be great if the
 build could be fixed to be able to use it without segfaulting, since using
 `nm-classic` is a hack and Apple may retire it at some point.

 https://github.com/Homebrew/homebrew-core/issues/371
 https://github.com/Homebrew/homebrew-core/pull/449

 https://gist.githubusercontent.com/ilovezfs/dd26686da7e545fabca1a517e3adb039/raw/85db1dd5070d6362ed280d8448161a3ab2b86b0d/gistfile1.txt

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11951>
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