http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48713
--- Comment #3 from Ian Chivers <ian.chivers at chiversandbryan dot co.uk> 2011-04-21 19:11:29 UTC --- It was not clear to me which one I should have downloaded and installed. I'm trying to finish a book for springer and need most of the development stuff, including oop openmp mpi coarray so assumed that 4.7.x was the one to download. i've got a 32 bit windows system so i'll try 4.7.x on that and let you know. we try developing the examples for the book on several systems and keeping track of them all and the various compilers is a real headache. hopefully this is just a 32/64 bit windows problem from your point of view. cheers ian