http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49973
--- Comment #4 from Timothy Liang <timothy003 at msn dot com> 2011-08-04 11:03:32 UTC --- (In reply to comment #3) > Why 10? " /* 中 */ " has 12 characters (and 14 bytes as utf8). The four spaces is supposed to be a tab. Also, the column number starts from one. So: /* 中 */ asdf | 1234567890 Since I set the input charset as UTF-8, g++ should count the '中' as one character, not three. And when I set it to latin1, g++ should count the '中' as three, not six.