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.
It was needed because std::allocator_traits::construct doesn't work with
a const pointer (e.g. pointer to the first member of a std::pair). But
now we're only calling construct if BOOST_UNORDERED_CXX11_CONSTRUCTION
is true, so the allocator_traits::construct is no longer used here.
Require good construct support and piecewise construction. I don't know
if there are any platforms with good construct support, but no piecewise
construction, if there are then they'll no longer use
'allocator_traits::construct'/'allocator_traits::destruct'.
I was having some problems in an abandoned prototype with incomplete
types, I'm not sure I will have this problem now, but I'm keeping this
anyway, as it seems useful.
The current organisation of the headers has been making less and less
sense over the years, so to simplify things, I'm just going to combine
them into a single header. This change will make it easier to do that.
Warning is:
allocate.hpp:335:19: warning: conversion to ???unsigned int??? from
???long unsigned int??? may alter its value [-Wconversion]
I'm not sure, but I think it's because the sizeof is a long unsigned
int, and the template parameter is an unsigned int. The sizeof isn't
even used, it's just there to get a value for expression SFINAE.
Daniel James