If i compile the attached args.c, i get the following errror message in mainline GCC. In file included from args.c:2:0: structdef.h:5:3: error: expected ‘:’, ‘,’, ‘;’, ‘}’ or ‘__attribute__’ before ‘unsigned’ Note that it says args.c:2:0. We used to use GCC 4.3.2, which used to only say args.c:2. The extra ":0", which is supposed to represent column number, is just wrong. In the attached test, the actual column number is "3". I am happy for the compiler to not give any column number, but giving the wrong column number looks wrong. I saw this in picochip code, but i am guessing this is not specific to picochip. Please let me know if you need any more information. Thanks -- Summary: Column numbers in error messages are wrong Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: preprocessor AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hariharans at picochip dot com GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: picochip-unknown-none http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44652