http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50786
--- Comment #2 from Andi Kleen <andi-gcc at firstfloor dot org> 2011-10-19 14:40:53 UTC --- I'm not 100% sure which stage generates them, but I have lots of cc*.o and some others (.res etc.) left over after the LTRANS failure. After two failures in a row i always have a full /.