[Boost-bugs] [Boost C++ Libraries] #4223: boost::python exception translator causes ambiguous call errors with Visual Studio 2010

Subject: [Boost-bugs] [Boost C++ Libraries] #4223: boost::python exception translator causes ambiguous call errors with Visual Studio 2010
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-05-17 04:05:01

#4223: boost::python exception translator causes ambiguous call errors with Visual
Studio 2010
-------------------------------+--------------------------------------------
 Reporter:  blaquee@…          |       Owner:         
     Type:  Bugs               |      Status:  new    
Milestone:  Boost 1.43.0       |   Component:  None   
  Version:  Boost 1.44.0       |    Severity:  Problem
 Keywords:                     |  
-------------------------------+--------------------------------------------
 There is an occasion where the use of the register_exception_translator
 template function causes:
 error C2668: 'boost::bind' : ambiguous call to overloaded function

 the particular file and line are located here:
 https://svn.boost.org/trac/boost/browser/trunk/boost/python/exception_translator.hpp


 Line 21, where the call to bind is not properly scoped to a namespace and
 causes the compiler to resolve incorrectly. The error looks like this:


 {{{
 D:\boost_1_42\boost/python/exception_translator.hpp(21): error C2668:
 'boost::bind' : ambiguous call to overloaded function
 1>          D:\boost_1_42\boost/bind/bind.hpp(1322): could be
 'boost::_bi::bind_t<R,F,L>
 boost::bind<bool,boost::python::detail::translate_exception<ExceptionType,Translate>,boost::arg<I>,boost::arg<2>,Translate>(F,A1,A2,A3)'
 1>          with
 1>          [
 1>              R=bool,
 1>
 F=boost::python::detail::translate_exception<WSException,init_module_wshook::WSExceptionTranslator>,
 1>
 L=boost::_bi::list3<boost::arg<1>,boost::arg<2>,boost::_bi::value<init_module_wshook::WSExceptionTranslator>>,
 1>              ExceptionType=WSException,
 1>              Translate=init_module_wshook::WSExceptionTranslator,
 1>              I=1,
 1>              A1=boost::arg<1>,
 1>              A2=boost::arg<2>,
 1>              A3=init_module_wshook::WSExceptionTranslator
 1>          ]
 1>          C:\Program Files\Microsoft Visual Studio
 10.0\VC\include\xxbind1(323): or
 'std::tr1::_Bind<_Result_type,_Ret,_BindN>
 std::tr1::bind<bool,boost::python::detail::translate_exception<ExceptionType,Translate>,boost::arg<I>,boost::arg<2>,Translate>(_Fty,_Arg0,_Arg1,_Arg2)'
 [found using argument-dependent lookup]
 1>          with
 1>          [
 1>              _Result_type=bool,
 1>              _Ret=bool,
 1>
 _BindN=std::tr1::_Bind3<std::tr1::_Callable_obj<boost::python::detail::translate_exception<WSException,init_module_wshook::WSExceptionTranslator>,false>,boost::arg<1>,boost::arg<2>,init_module_wshook::WSExceptionTranslator>,
 1>              ExceptionType=WSException,
 1>              Translate=init_module_wshook::WSExceptionTranslator,
 1>              I=1,
 1>
 _Fty=boost::python::detail::translate_exception<WSException,init_module_wshook::WSExceptionTranslator>,
 1>              _Arg0=boost::arg<1>,
 1>              _Arg1=boost::arg<2>,
 1>              _Arg2=init_module_wshook::WSExceptionTranslator
 1>          ]
 1>          while trying to match the argument list
 '(boost::python::detail::translate_exception<ExceptionType,Translate>,
 boost::arg<I>, boost::arg<I>, init_module_wshook::WSExceptionTranslator)'
 1>          with
 1>          [
 1>              ExceptionType=WSException,
 1>              Translate=init_module_wshook::WSExceptionTranslator
 1>          ]
 1>          and
 1>          [
 1>              I=1
 1>          ]
 1>          and
 1>          [
 1>              I=2
 1>          ]
 1>          wspluginmanager_python.cpp(179) : see reference to function
 template instantiation 'void
 boost::python::register_exception_translator<WSException,init_module_wshook::WSExceptionTranslator>(Translate,boost::type<T>
 *)' being compiled
 1>          with
 1>          [
 1>              Translate=init_module_wshook::WSExceptionTranslator,
 1>              T=WSException
 1>          ]
 1>
 }}}

 The line of code that would cause such an error is:

 {{{
 py::register_exception_translator<WSException>(WSExceptionTranslator());
 }}}

 namespace py = boost::python

 The fix for this would be to properly use boost::bind at line 21 and cause
 it to resolve properly on Visual Studio 2010 RTM.

 Thank you.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4223>
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