id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10264	[smart_ptr] AIX 6.1 bug with sched_yield() function out of scope	Axel Ismirlian <axel.ismirlian@…>	Peter Dimov	"The error that pops up in some of the lambda tests is the following:

../libs/lambda/test/algorithm_test.cpp:37:48: error: reference to 'var' is ambiguous
                      protect((_1 = var(sum), ++var(sum)))));
                                                ^
In file included from /usr/include/sys/thread.h:37:0,
                 from /usr/include/sys/ptrace.h:28,
                 from /usr/include/sys/proc.h:42,
                 from /usr/include/sys/pri.h:43,
                 from /usr/include/sys/sched.h:38,
                 from /usr/include/sched.h:51,
                 from ../boost/smart_ptr/detail/yield_k.hpp:101,
                 from ../boost/smart_ptr/detail/spinlock_sync.hpp:18,
                 from ../boost/smart_ptr/detail/spinlock.hpp:50,
                 from ../boost/smart_ptr/detail/spinlock_pool.hpp:25,
                 from ../boost/smart_ptr/shared_ptr.hpp:34,
                 from ../boost/shared_ptr.hpp:17,
                 from ../boost/test/utils/callback.hpp:21,
                 from ../boost/test/execution_monitor.hpp:38,
                 from ../boost/test/impl/execution_monitor.ipp:30,
                 from ../boost/test/minimal.hpp:37,
                 from ../libs/lambda/test/algorithm_test.cpp:14:
/usr/include/sys/var.h:59:8: note: candidates are: struct var
 struct var {
        ^
In file included from ../boost/lambda/core.hpp:53:0,
                 from ../boost/lambda/lambda.hpp:14,
                 from ../libs/lambda/test/algorithm_test.cpp:16:
../boost/lambda/detail/lambda_functor_base.hpp:66:19: note:                 template<class T> boost::lambda::lambda_functor<T> boost::lambda::var(const boost::lambda::lambda_functor<T>&)
 lambda_functor<T> var(const lambda_functor<T>& t) { return t; }
                   ^
../boost/lambda/detail/lambda_functor_base.hpp:60:38: note:                 template<class T> boost::lambda::lambda_functor<boost::lambda::identity<T&> > boost::lambda::var(T&)
 inline lambda_functor<identity<T&> > var(T& t) { return identity<T&>(t); }
                                      ^

In ../boost/lambda/detail/lambda_functor_base.hpp there is variable called var that conflicts with an AIX system variable. Defining var and later undefining it frees that variable name. However, the fix I propose is in the smart_ptr function.

Please look at the Pull Request created for further details:
https://github.com/boostorg/smart_ptr/pull/7"	Bugs	new	To Be Determined	smart_ptr	Boost 1.55.0	Problem