Re: [PATCH C++] - SD-6 Implementation Part 1 - __has_include.

[Ed Smith-Rowland <3dw4rd at verizon dot net>]

On 09/25/2014 12:57 PM, Jason Merrill wrote:
> On 09/01/2014 09:34 PM, Ed Smith-Rowland wrote:
> >     (open_file_failed()): Not an error to not find a header file for
> >     __has_include__.
>
> Hmm, looks like this means that __has_include__ will silently return 
> false if a header exists but is unreadable; I would think that we want 
> it to be true (and have an error when the user tries to include it).
>
> Jason
Here is the new patch series.

A patch addressing C++11 [[deprecated]] is coming later when these are 
in as is a library patch for std::is_final.

I flipped the logic on the libcpp functions because there was a double 
negative of sorts - the logic was confusing to me on second look.
Also, a file that a user can't read for permissions still returns true 
with __has_include.

Built and tested on x86_64-linux.

OK?

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