[boost] wave lexed_tokens sample has a lexing error on an empty file

Hello, I pulled down a copy of boost 1.34 from CVS today and built the lexed_tokens sample. It seemed to work well, except for running it on an empty file: $./lexed_tokens bar.c bar.c(1): error: generic lexing error: invalid character '\000' in input stream $ This used to work in boost 1.33.1: $ ./lexed_tokens bar.c EOF (#402) at bar.c ( 1/ 1): >< $ Leo