Re: [boost] Boost and clang under Windows

Subject: Re: [boost] Boost and clang under Windows
From: Daniel James (daniel_at_[hidden])
Date: 2013-09-29 16:27:23

On 29 September 2013 21:23, Andrey Semashev <andrey.semashev_at_[hidden]> wrote:
> On Sunday 29 September 2013 21:19:24 Daniel James wrote:
>> On 29 September 2013 21:12, Andrey Semashev <andrey.semashev_at_[hidden]>
> wrote:
>> > On Sunday 29 September 2013 20:57:56 Daniel James wrote:
>> >> On 29 September 2013 19:52, Beman Dawes <bdawes_at_[hidden]> wrote:
>> >> > Please do not do that. I had face-to-face meetings this week with
>> >> > Chandler
>> >> > Carruth
>> >> > and others working on Clang for Windows. They are depending on Boost's
>> >> > tests to find bugs in Clang's emulation of Visual C++, and if you work
>> >> > around their bugs it will deprive them of a valuable testing tool.
>> >>
>> >> They should be testing with BOOST_COMPILER_CONFIG set to
>> >> "boost/config/compiler/visualc.hpp". That way BOOST_MSVC and the
>> >> appropriate compatibility macros will be set for them, but we can
>> >> still use BOOST_MSVC to treat Visual C++ differently to clang.
>> >
>> > BOOST_MSVC should only be defined for genuine MSVC, not for any
>> > pretenders.
>> > That's the whole point of this macro.
>>
>> Errr, that's what I said. I was suggesting that they could test with
>> BOOST_COMPILER_CONFIG set to the Visual C++ header so it will be set
>> in *their* tests. For our use BOOST_MSVC wouldn't be set.
>
> I don't understand. Why would they test a known to be incorrect configuration?

If they want to test their emulation of Visual C++, they should be
testing using the same code as Visual C++, which means testing with
the Visual C++ configuration.