Adjusts to use less arguments on Visual C++ 11, which will hopefully fix
it on that compiler. Also changed to be a little less preprocessor
heavy. I'm not sure about the __SUNPRO_CC support, hopefully recent
versions of that compiler will have better support, and can use the
normal implementation. Will check that later.
Was getting a weird test failure for Visual C++ 11,
BOOST_NO_CXX11_HDR_TUPLE is defined, so the code doesn't support
std::tuple, but BOOST_UNORDERED_HAVE_PIECEWISE_CONSTRUCT was also
true, and so there are functions for constructing using
std::piecewise_construct/std::tuple, which don't work.
So, I'm assuming that if BOOST_UNORDERED_HAVE_PIECEWISE_CONSTRUCT is true,
then there must be a std::tuple. I guess it doesn't have full C++11 support,
which is why BOOST_NO_CXX11_HDR_TUPLE is defined, but it appears to be
good enough for us. If not, this will break things.
There used to be a std::move test here, but it was changed to
boost::test for a wider range of testing, but I'd quite like to test
with std::move regardless.
It looks the odd result in unnecessary_copy_tests on Visual C++ 11 is not a
bug, but add some extra tests just to make sure. Also some extra rehash and
reserve testing thrown in.
[SVN r80705]
Mainly because I want to get more info on the odd test failure for Visual C++
11. I expect that with move emulation these results could vary considerably,
and since I've only tested with gcc and clang so far, it's quite likely that
this test will now fail for other compilers.
[SVN r80200]
Compilers with rvalue references can avoid creating a node, as they can use the
value from the rvalue reference to check if the value is already in the
container (in this case it is) before creating the node. Could possibly do the
same for compilers without rvalue references, if it can get a value out of
Boost.Move's rvalue reference emulation.
[SVN r79503]
Helps allocators which can't use incomplete pointers, and avoid using
base pointers where that might not be possible. And some other
reorganization. Storing arguments to emplace in a structure when
variadic template parameters aren't available. Changed some of the odd
design for working with older compilers.
[SVN r74742]
Will need to deprecate the old variadic style pair construction, also
should look into extract_key, was written for compatibility with older
compilers that are no longer supported.
[SVN r74119]
