On Thu, Nov 20, 2014 at 1:38 PM, Aaron Ballman <[email protected]> wrote:
> The __has_attribute implementation does not pay attention to the > syntax supported by attributes -- instead, it looks to see whether an > attribute is generally known with that spelling. Since pragmas can now > be spelled as attributes, this means __has_attribute(loop) returns > true because of the #pragma loop functionality. Same for unroll. > > Should __has_attribute ignore attributes spelled with a #pragma spelling? I would go further: __has_attribute should probably only look for GNU-syntax attributes. We have __has_cpp_attribute for C++-syntax attributes now, and I don't think anyone is (yet) using this for __declspec, so now seems like a good time to make this change.
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