Description of problem:

Some boost libraries are not compatible with devtoolset, Specially, the weak_ptr.hpp.

Version-Release number of selected component (if applicable):

boost-1.41.0-25.el6.x86_64
devtoolset-3-gcc-c++-4.9.1-10.el6.x86_64

How reproducible:

100%



Steps to Reproduce:

[@sjs_49_151 gccbug]# cat boost_weakptr_bug.cpp 
#include <boost/weak_ptr.hpp>

class Foo
{
public:
	Foo() = default;
	Foo(const Foo&) = default;
	Foo(Foo&&) = default;
};

typedef boost::weak_ptr<Foo> FooPtr; 

int main()
{
	FooPtr p1;
	FooPtr p2(p1);
}

[@sjs_49_151 gccbug]# scl enable devtoolset-3 -- g++ -c -std=c++11 boost_weakptr_bug.cpp 

Actual results:

boost_weakptr_bug.cpp: In function 'int main()':
boost_weakptr_bug.cpp:16:14: error: use of deleted function 'boost::weak_ptr<Foo>::weak_ptr(const boost::weak_ptr<Foo>&)'
  FooPtr p2(p1);
              ^
In file included from /usr/include/boost/weak_ptr.hpp:16:0,
                 from boost_weakptr_bug.cpp:1:
/usr/include/boost/smart_ptr/weak_ptr.hpp:28:25: note: 'boost::weak_ptr<Foo>::weak_ptr(const boost::weak_ptr<Foo>&)' is implicitly declared as deleted because 'boost::weak_ptr<Foo>' declares a move constructor or move assignment operator
 template<class T> class weak_ptr
                         ^

Expected results:

Compiled without error.

Additional info:

This bug is similar of shared_ptr at #Bug 1108268.

See
https://bugzilla.redhat.com/show_bug.cgi?id=1108268

Patch:

--- include/boost/smart_ptr/weak_ptr.hpp   2009-11-19 00:44:37.000000000 +0800
+++ fixed/include/boost/smart_ptr/weak_ptr.hpp   2014-04-28 16:15:21.000000000 +0800
@@ -76,8 +76,6 @@
 
 #if defined( BOOST_HAS_RVALUE_REFS )
 
+    weak_ptr( weak_ptr<Y> const & r ) = default;
+
     template<class Y>
 #if !defined( BOOST_SP_NO_SP_CONVERTIBLE )