id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11815,boost::config defines BOOST_NO_CXX11_RVALUE_REFERENCES under icc 15,nmusolino@…,John Maddock,"When compiling with icc version 15.0.4 under the C++11 standard, the macro BOOST_NO_CXX11_RVALUE_REFERENCES is defined, even though icc supports rvalue references.

I discovered this when attempting to use the intrusive_ptr class template's move constructor, so I created a demonstration that uses intrusive_ptr.

{{{
$ icc --version
icc (ICC) 15.0.4 20150805
icc -I/path/to/boost/1.56.0/include/ -std=c++11 ./intrusive_ptr_test.cpp -o intrusive_ptr_test_icc

$ ./intrusive_ptr_test_icc 
__cplusplus: 201103
BOOST_VERSION: 105600
std::is_nothrow_move_constructible<S_ptr>: false
BOOST_NO_CXX11_RVALUE_REFERENCES: <undefined>
__INTEL_COMPILER: 1500
BOOST_INTEL_CXX_VERSION: 1500
}}}

I expected that BOOST_NO_CXX11_RVALUE_REFERENCES would not be defined, because this version of icc [https://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler supports rvalue references].

When built using g++ 5.2.0, the macro is not defined, so the intrusive_ptr class template is nothrow-move-constructible.  

{{{
$ g++ --version
g++ (TPM built 20150717) 5.2.0
Copyright (C) 2015 Free Software Foundation, Inc.
$ g++ -I/path/to/boost/1.56.0/include/ -std=c++11 ./intrusive_ptr_test.cpp -o intrusive_ptr_test_gcc

$ ./intrusive_ptr_test_gcc
__cplusplus: 201103
BOOST_VERSION: 105600
std::is_nothrow_move_constructible<S_ptr>: true
BOOST_NO_CXX11_RVALUE_REFERENCES: <undefined>
}}}


I believe this is the same problem reported in [https://svn.boost.org/trac/boost/ticket/9829 ticket #9829].

This problem does not occur in boost 1.58.0.",Bugs,closed,To Be Determined,config,Boost 1.54.0,Problem,worksforme,icc,