Could you kindly tell me why the following code does not compile? I guess it is an allocator issue, but how do I go further? #include #include <iostream> using namespace std; int main () { class test{ int x; int y; }; typedef boost::multi_array array_type; typedef array_type::index index; array_type A(boost::extents[3][4][2]); array_type::extent_gen extents; return 0; } compile errors: multiArray.cpp:11: error: template argument for ‘template<class _Alloc> class std::allocator’ uses local type ‘main()::test’ multiArray.cpp:11: error: trying to instantiate ‘template<class _Alloc> class std::allocator’ multiArray.cpp:11: error: template argument 3 is invalid multiArray.cpp:11: error: invalid type in declaration before ‘;’ token multiArray.cpp:12: error: expected initializer before ‘index’ multiArray.cpp:13: error: cannot convert ‘boost::detail::multi_array::extent_gen<3ul>’ to ‘array_type’ in initialization multiArray.cpp:14: error: expected initializer before ‘extents’ -- R Suresh Kumar, http://www.ee.ucr.edu/~sramachandranna Sarve bhavantu sukinaha (May everyone be happy) Sarve santu niramiyaha (May everyone be without affliction) Sarve bhadrani pashyantu (May everyone see only goodness) Ma kashchit dukha bhak bhavet (Let none be the victim of suffering)