[CppAD-tickets] [C++ Algorithmic Differentiation] #4: gcc 4.3 complain about ambiguous conversion

[C++ Algorithmic Differentiation]

#4: gcc 4.3 complain about ambiguous conversion
------------------------+---------------------------------------------------
 Reporter:  stefan      |       Owner:  somebody
     Type:  defect      |      Status:  new     
 Priority:  normal      |   Milestone:          
Component:  component1  |     Version:          
 Severity:  major       |    Keywords:          
------------------------+---------------------------------------------------
 Hi,

 with gcc 4.3 I get the following error when compiling stable 2.0 or trunk:

 {{{
 example/bender_quad.cpp: In member function
 'CppAD::vector<Type><unnamed>::Fun<Type>::h(const CppAD::vector<Type>&,
 const CppAD::vector<double>&) [with Type = CppAD::AD<double>]':
 cppad/local/bender_quad.hpp:348:   instantiated from 'void
 CppAD::BenderQuad(const BAvector&, const BAvector&, Fun, BAvector&,
 BAvector&, BAvector&) [with BAvector = CppAD::vector<double>, Fun =
 <unnamed>::Fun<CppAD::AD<double> >]'
 example/bender_quad.cpp:188:   instantiated from here
 example/bender_quad.cpp:109: error: ISO C++ says that these are ambiguous,
 even though the worst conversion for the first is better than the worst
 conversion for the second:
 cppad/local/sub.hpp:60: note: candidate 1: CppAD::AD<double>
 CppAD::operator-(const CppAD::AD<double>&, const double&)
 cppad/local/ad.hpp:120: note: candidate 2: CppAD::AD<Base>
 CppAD::AD<Base>::operator-(const CppAD::AD<Base>&) const [with Base =
 double]
 example/bender_quad.cpp: In member function
 'CppAD::vector<Type><unnamed>::Fun<Type>::f(const CppAD::vector<Type>&,
 const CppAD::vector<Type>&) [with Type = CppAD::AD<double>]':
 cppad/local/bender_quad.hpp:361:   instantiated from 'void
 CppAD::BenderQuad(const BAvector&, const BAvector&, Fun, BAvector&,
 BAvector&, BAvector&) [with BAvector = CppAD::vector<double>, Fun =
 <unnamed>::Fun<CppAD::AD<double> >]'
 example/bender_quad.cpp:188:   instantiated from here
 example/bender_quad.cpp:94: error: ISO C++ says that these are ambiguous,
 even though the worst conversion for the first is better than the worst
 conversion for the second:
 cppad/local/sub.hpp:60: note: candidate 1: CppAD::AD<double>
 CppAD::operator-(const CppAD::AD<double>&, const double&)
 cppad/local/ad.hpp:120: note: candidate 2: CppAD::AD<Base>
 CppAD::AD<Base>::operator-(const CppAD::AD<Base>&) const [with Base =
 double]
 }}}

 Stefan

-- 
Ticket URL: <https://projects.coin-or.org/CppAD/ticket/4>
C++ Algorithmic Differentiation <http://projects.coin-or.org/CppAD>
An algorithmic differentiation library for C++ programs.