[cfe-dev] Clang on Windows targeting gcc requirements

[Nikola Smiljanic]

http://webcompiler.cloudapp.net/ is down atm but vc++ at
http://rextester.com/runcode (it should be 2013) doesn't define __EDG__.

On Fri, Jun 26, 2015 at 10:02 PM, mfaithfull at btopenworld.com <
mfaithfull at btopenworld.com> wrote:

> It's quite possible that it's a bug on the MS side, although a strange one
> to have __EDG__ predefined in the main preprocessor if it's not the same as
> the intellisense one.
> It would be useful to know if the definition is still there in the VS2015
> toolchain.
> It has been too long since I dug into this and I have other things cooking
> at the moment so probably best if I leave it in Edward's capable hands.
>
>
> ----- Reply message -----
> From: "Nikola Smiljanic" <popizdeh at gmail.com>
> To: "mfaithfull at btopenworld.com" <mfaithfull at btopenworld.com>
> Cc: "Sebastian Redl" <sebastian.redl at getdesigned.at>, "cfe-dev
> Developers" <cfe-dev at cs.uiuc.edu>
> Subject: [cfe-dev] Clang on Windows targeting gcc requirements
> Date: Fri, Jun 26, 2015 12:00
>
> I'm pretty sure they only use EDG for IntelliSense, I'm still seeing code
> that compiles fine with VC++ and shows errors from IntelliSense.
>
> Once they decide to get a new frontend I'm sure they'll choose Clang :P
>
> On Fri, Jun 26, 2015 at 8:46 PM, mfaithfull at btopenworld.com <
> mfaithfull at btopenworld.com> wrote:
>
>>  I looked into this ~18 months ago when I discovered that
>> BoostPP disables variadic macros under the VS 2013 preprocessor even though
>> compiler v120 officially supports them.
>> The combination of having both MSC_VER and __EDG__ defined was not
>> correctly handled.
>> Given that __EDG__ is an automatic predefine on this compiler I guessed
>> Microsoft had switched to EDG. They won't confirm it of course. The closest
>> I could get was confirmation from MS that this compiler does have a new
>> preprocessor front end and from EDG that they are supplying CPP front ends
>> to Microsoft.
>> The end result is the same. I'm not sure that the VS CPP is as broken as
>> it appears. Other than this bug I've had no trouble with BoostPP under
>> MinGW clang or Visual Studio.
>>
>>
>> ----- Reply message -----
>> From: "Sebastian Redl" <sebastian.redl at getdesigned.at>
>> To: <cfe-dev at cs.uiuc.edu>
>> Subject: [cfe-dev] Clang on Windows targeting gcc requirements
>> Date: Fri, Jun 26, 2015 10:32
>>
>>
>>
>> On 26.06.2015 10:40, mfaithfull at btopenworld.com wrote:
>>
>>  Interesting note on Boost PP. I'm not sure why VC++ is still broken
>> given that they have been using EDG front end since 2013?
>>
>> AFAIK they're not, only the IntelliSense system is. Where did you hear
>> this?
>>
>> Sebastian
>>
>> _______________________________________________
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>>
>>
>
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