http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48459
--- Comment #6 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-06-09 17:00:20 UTC --- (In reply to comment #4) > Created attachment 24475 [details] > patch > > Here's an untested patch. Does this fix the problem for you? I'll try and let you know. > Naturally you'll > want to revert it once dwarf2 unwind info is supported. I think my other comment (#5) is somewhat ambiguous and incomplete. I am referring to TARGET_DEBUG_UNWIND_INFO being defined in avr.c. In previous versions it is optional but now it seems mandatory to avoid ICE.