warnings/errors compiling with /clr option in msvc about type_traits

[jzmaddock]

From Microsoft's docs:

"On ARM and x64 processors, __stdcall is accepted and ignored by the compiler; on ARM and x64 architectures, by convention, arguments are passed in registers when possible, and subsequent arguments are passed on the stack."

Effectively all the calling conventions get mapped to the same thing so you need to disable specialisations on them to prevent duplications.

[zvrba]

Additional information: I use Visual Studio 15.7.2, toolset v14.1, compiler version string Microsoft(R) C/C++ Optimizing Compiler Version 19.14.26429.4 for x64 and I target C++/CLI for x64. The project is an ordinary C++ project being built as x64 DLL/EXE, with only a couple of files being compiled for C++/CLI (i.e., I have turned on /clr on individual files, not on the whole project).

As I wrote in the mail, stdcall, fastcall and cdecl conventions are also disabled when compiling for x64, regardless of CLI compilation.

[jzmaddock]

Fixed in develop.

[erikeldh]

Which version was this fixed in? I'm hitting this in 1.75

boost\type_traits\detail\is_member_function_pointer_cxx_11.hpp(121,4): warning C4561: '__fastcall' incompatible with the '/clr' option: converting to '__stdcall'
boost\type_traits\detail\is_member_function_pointer_cxx_11.hpp(121,113): error C2953: 'boost::is_member_function_pointer<Ret(__stdcall C::* )(Args...)>': class template has already been defined