Reid Kleckner 596b85cc23 Match MSVC's handling of commas during macro argument expansion ...

This allows clang to parse the type_traits header in Visual Studio 2012,
which is included widely in practice.

This is a rework of r163022 by João Matos.  The original patch broke
preprocessing of gtest headers, which this patch addresses.

Patch by Will Wilson!

llvm-svn: 184968

2013-06-26 17:16:08 +00:00

1.2 KiB

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