[Boost-bugs] [Boost C++ Libraries] #1915: Nested matrix products with transposes causes compiler to complain error: invalid application of ‘sizeof’

Subject: [Boost-bugs] [Boost C++ Libraries] #1915: Nested matrix products with transposes causes compiler to complain error: invalid application of ‘sizeof’
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-05-14 05:52:06

#1915: Nested matrix products with transposes causes compiler to complain error:
invalid application of ‘sizeof’
------------------------------------------+---------------------------------
 Reporter:  Leo Singer <aronnax_at_[hidden]>  |       Owner:  guwi17 
     Type:  Bugs                          |      Status:  new    
Milestone:  Boost 1.36.0                  |   Component:  uBLAS  
  Version:  Boost 1.34.1                  |    Severity:  Problem
 Keywords:  ublas trans                   |  
------------------------------------------+---------------------------------
 When using ublas, a pair of nested products will cause the compiler to
 complain if there is a `trans` on any of the operands.  For example:

 {{{
 #!cpp
 using namespace boost::numeric::ublas;
 matrix<float> A(3,3),   B(3,3), C(3,3);

 prod(prod(A,B),trans(C));  // fails
 prod(prod(trans(A),B),C);  // fails
 prod(prod(A,trans(B)),C);  // fails
 prod(prod(A,B),C);  // OK
 }}}

 The compiler produces the following error message:
 {{{
 /opt/local/include/boost/numeric/ublas/matrix_expression.hpp: In function
 ‘typename boost::numeric::ublas::matrix_matrix_binary_traits<typename
 E1::value_type, E1, typename E2::value_type, E2>::result_type
 boost::numeric::ublas::prod(const
 boost::numeric::ublas::matrix_expression<E>&, const
 boost::numeric::ublas::matrix_expression<E2>&) [with E1 =
 boost::numeric::ublas::matrix_matrix_binary<boost::numeric::ublas::matrix<float,
 boost::numeric::ublas::basic_row_major<size_t, ptrdiff_t>,
 boost::numeric::ublas::unbounded_array<float, std::allocator<float> > >,
 boost::numeric::ublas::matrix<float,
 boost::numeric::ublas::basic_row_major<size_t, ptrdiff_t>,
 boost::numeric::ublas::unbounded_array<float, std::allocator<float> > >,
 boost::numeric::ublas::matrix_matrix_prod<float, float, float> >, E2 =
 boost::numeric::ublas::matrix_unary2<boost::numeric::ublas::matrix<float,
 boost::numeric::ublas::basic_row_major<size_t, ptrdiff_t>,
 boost::numeric::ublas::unbounded_array<float, std::allocator<float> > >,
 boost::numeric::ublas::scalar_identity<float> >]’:
 bad_multiply.cpp:9:   instantiated from here
 /opt/local/include/boost/numeric/ublas/matrix_expression.hpp:4815: error:
 invalid application of ‘sizeof’ to incomplete type
 ‘boost::STATIC_ASSERTION_FAILURE<false>’
 }}}

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1915>
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