Hello, I found a trivial mistake in boost/iostreams/read.hpp of current CVS HEAD version. So, I report it. Thanks Takeshi Mouri *** read.hpp.orig Mon May 30 16:30:27 2005 --- read.hpp Sun Jun 19 23:42:40 2005 *************** *** 158,164 **** { // gcc 2.95 needs namespace qualification for char_traits. typedef typename char_type_of<T>::type char_type; typedef iostreams::char_traits traits_type; ! return !traits_type::is_eof(t.sputbackc()); } }; --- 158,164 ---- { // gcc 2.95 needs namespace qualification for char_traits. typedef typename char_type_of<T>::type char_type; typedef iostreams::char_traits traits_type; ! return !traits_type::is_eof(t.sputbackc(c)); } };