http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50816
--- Comment #7 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-10-24 04:21:17 UTC --- Created attachment 25583 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25583 Relevant testcase that is compilable Compile it as: $avr-gcc -mmcu=atxmega128a1 -g -gdwarf-2 test.c -S The resulting file gives assembly interspersed with .loc directives (and discriminators)