Version detection fails for libstdc++ 4.6 with clang

[Etienne Laurin <etienne@…>]

boost/config/stdlib/libstdcpp3.hpp sets BOOST_LIBSTDCXX_VERSION to 40700.

That causes BOOST_NO_CXX11_ALLOCATOR to be undefined.

This is reproducible on Ubuntu Lucid:

$ apt-get install g++ clang
$ cat test.cc
#include <boost/shared_ptr.hpp>
$ clang++ -isystem boost_1_58_0 -c -std=c++0x test.cc
boost_1_58_0/boost/smart_ptr/detail/shared_count.hpp:231:31: error: no type named 'allocator_traits' in namespace 'std'
$ clang++ -isystem boost_1_58_0 -c -std=c++11 test.cc -DBOOST_NO_CXX11_ALLOCATOR
# No error

[John Maddock]

What is the actual GCC/libstdc++ version being used?

[etienne@…]

I have GCC and libstdc++ version 4.6.3

[John Maddock]

Thanks, I believe this should fix it: ​https://github.com/boostorg/config/commit/15d56c9cff20e9643f508639517846a423fb948c

Please let me know if not.

[Etienne Laurin <etienne@…>]

Thanks, that patch seems to work.