[ublas] compilation problem with gcc4.0.2...

From: Thomas Lemaire (thomas.lemaire_at_[hidden])
Date: 2005-09-15 07:53:45

Dear list,

hear again some compilation proglem using boost 1.33 and the last gcc in 
debian/sid
gcc (GCC) 4.0.2 20050913 (prerelease) (Debian 4.0.1-7) 
This error did not appened with previous gcc4 debian/sid package...

This trivial example does not compile:

  vector<double> a;
  vector<double> b;
  matrix<double> C;
  a = prod(C,b);

the error is:

/usr/include/boost/numeric/ublas/matrix_expression.hpp:3560: error: 
'(((unsigned 
int)boost::numeric::ublas::vector_container<boost::numeric::ublas::vector<double, 
boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > 
>::complexity) == 0u)' is not a valid template argument for type 'bool' 
because it is a non-constant expression

I am not sure to understand what is going on with gcc4, it seems to me that 
the template machinery is getting more strict, or broken...

-- 
thomas