[PATCH] Expand macros in OpenMP pragmas.

[Richard Smith]

One minor tweak, then this LGTM, thanks!


================
Comment at: lib/Frontend/PrintPreprocessedOutput.cpp:566
@@ +565,3 @@
+  // Set to true if tokens should be expanded
+  unsigned ShouldExpandTokens : 1;
+
----------------
`bool`? And there's no point including a bit-field here; there aren't many of these objects, and no other bitfields are being packed into the same storage anyway.

http://reviews.llvm.org/D10446

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