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Subject: Re: [boost] [clang] clang-cl expansion of macros
From: Edward Diener (eldiener_at_[hidden])
Date: 2016-04-17 08:13:07

On 4/17/2016 7:05 AM, Niall Douglas wrote:
> On 16 Apr 2016 at 7:58, degski wrote:
>> On 16 April 2016 at 01:15, Edward Diener <eldiener_at_[hidden]> wrote:
>> I have posted bug 27380 to the llvm/clang bug tracker...
>> Thanks for not giving up (also @ Niall D.)!
> Thanks for saying so, but we could do a lot better.
> I flicked through the clang source code and as far as I can tell from
> a ten minute inspection, getting C99 preprocessor behaviour on MSVC
> ABI targets is as easy as flipping a boolean on. Most of the other
> MSVC preprocessor special behaviours only turn on with
> -fms-compatibility=on, and we no longer need that turned on to use
> Windows or indeed the MSVC CRT and STL. A source code patch ought to
> be mostly figuring out how to add a command line argument to control
> the C99 processor boolean, a few unit test cases to ensure rigour and
> lack of regression, and that's about it.
> The real effort behind such a patch would be navigating the internal
> politics on getting the patch into trunk. I have no need in my own
> code for a C99 preprocessor, hence I am not willing to invest that
> effort. But others with a more pressing need may wish to do so.

Why not bring up the issue on the clang developers mailing list ? Clang
source code is not an area which Boost developers can affect in this
mailing list, but in the clang developers mailing list you might be able
to persuade a clang developer to listen to your suggestion(s).

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