Re: [boost] [type_traits] Rewrite and dependency free version

Testing gcc on Windows 7 with mingw and mingw64:

Running type_traits tests passed with msvc-8.0, msvc-9.0, gcc-4.4.0, gcc-4.5.0, gcc-4.5.2, and gcc-4.9.2.

Failed with gcc-4.3.0 with:

"testing.capture-output ..\..\..\bin.v2\libs\type_traits\test\has_nothrow_assign_test.test\gcc-mingw-4.3.0\debug\has_nothrow_assign_test.run

====== BEGIN OUTPUT ====== has_nothrow_assign_test.cpp:204: The expression: "::boost::has_nothrow_assign::value" had an invalid value (found 1, expected 0)"

I assume the current version has the same failure?

In type_traits with gcc versions below 4 there are lots of failures of the order of:

"gcc.compile.c++ ..\..\..\bin.v2\libs\type_traits\test\is_virtual_base_of_test.test\gcc-mingw-3.4.5\debug\is_virtual_base_of_test.o

../../../boost/type_traits/is_virtual_base_of.hpp: In instantiation of `boost::detail::is_virtual_base_of_impl

...

::boost_type_traits_internal_struct_X': ../../../boost/type_traits/is_virtual_base_of.hpp:65: instantiated from `boost::detail::is_virtual_base_of_impl >' ../../../boost/type_traits/is_virtual_base_of.hpp:73: instantiated from `boost::detail::is_virtual_base_of_impl2' ../../../boost/type_traits/is_virtual_base_of.hpp:82: instantiated from `boost::is_virtual_base_of'"

etc. Of course I can't imagine anyone still using those versions.

You missed out the error message! But again, does the current version have the same failure?

The function_types library depends on some type_traits implementation which is not in Version2, and tti uses function_types etc so tti fails.

...

* If anyone would like to help converting further traits all help would be much appreciated.... Oh and the compiler requirements in the docs are all wildly out of date too...

Where are the compiler requirements for type_traits mentioned ?

There are out of date mentions in the docs - it all needs a *lot* of revising. If you mean "what are the requirements for this rewrite", then I don't know yet... *should* be the same as the current code modulo the usual SNAFU's John.