id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10984	libs/assign/test/basic.cpp Error: The name exception is ambiguous, exception and boost::exception	Sergey.Sprogis@…	James E. King, III	"1. Description of the failure
==============================
On Solaris 11.2  Oracle Studio 12.4 C++ compiler under -std=c++11 option produces the following error messages
for libs/assign/test/basic.cpp

""/usr/include/math.h"", line 215: Error: The name exception is ambiguous, exception and boost::exception.

and actually it produces similar error messages for small test like this:

 namespace boost {
  class exception;
 }
 using namespace boost;
 #include <algorithm>

Note that in the original boost harness ""class exception;"" can be found inside: boost/exception/exception.hpp

2. Cause of the failure.
========================
This is a C++ vs Unix or Boost vs Unix issue.

Standard Unix requires ""struct exception"" in the global namespace when
<math.h> is included. This conflicts with std::exception or boost::exception,
but only when there are using-declarations or using-directives that bring
std::exception or boost::exception into the global namespace.

When <math.h> is included, user code must avoid all of the following at file
scope (in the global namespace):
using namespace std;
using namespace boost;
using std::exception;
using boost::exception;

3. Possible Solution.
======================
 - Remove  2 lines:

     using namespace std;
     using namespace boost;

 - Add std:: prefix to all 'vector', 'map', 'string' invocations.

"	Bugs	closed	Boost 1.69	assign	Boost 1.57.0	Problem	fixed