feedc0de/boost_unordered
1
0
Fork 0
forked from boostorg/unordered
Code Pull Requests Activity

Unordered: Don't use SFINAE expression hack on Visual C++.

Browse Source 
Sometimes it doesn't work. This means I can clean up the implementation
for other compilers, but I'll leave that for now.


[SVN r75167]
This commit is contained in:
Daniel James
2011-10-29 16:31:40 +00:00
parent a5dcc9dab0
commit c3477b2624
2 changed files with 2 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
doc/compliance.qbk
View File

@ -36,9 +36,7 @@ A full implementation of `allocator_traits` requires sophisticated
member function detection so that the fallback is used whenever the member function detection so that the fallback is used whenever the
member function call is not well formed. member function call is not well formed.
This requires support for SFINAE expressions, which are available on This requires support for SFINAE expressions, which are available on
GCC from version 4.4 and Clang. They aren't supported by GCC from version 4.4 and Clang.
Visual C++ 2008/2010, but with a bit of hacking it's possible to support
certain use cases.
On other compilers, there's just a test to see if the allocator has On other compilers, there's just a test to see if the allocator has
a member, but no check that it can be called. So rather than using a a member, but no check that it can be called. So rather than using a

2
include/boost/unordered/detail/allocator_helpers.hpp
View File

@ -108,7 +108,7 @@ namespace boost { namespace unordered { namespace detail {
convert_from_anything(T const&); convert_from_anything(T const&);
}; };
#if !defined(BOOST_NO_SFINAE_EXPR) || BOOST_WORKAROUND(BOOST_MSVC, >= 1500) #if !defined(BOOST_NO_SFINAE_EXPR)
# define BOOST_UNORDERED_HAVE_CALL_DETECTION 1 # define BOOST_UNORDERED_HAVE_CALL_DETECTION 1