[PATCH] D23961: Avoid embedded preprocessor directives in __tree

[Vitaly Buka via cfe-commits]

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PPC bots are broken by this patch 
http://lab.llvm.org:8011/builders/sanitizer-ppc64be-linux/builds/3547
http://lab.llvm.org:8011/builders/sanitizer-ppc64le-linux/builds/2353


Repository:
  rL LLVM

https://reviews.llvm.org/D23961