http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55231
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-07 12:31:32 UTC --- Another issue: markus@x4 ~ % c++ -c -O0 -gsplit-dwarf test.ii -o /dev/null /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.0/../../../../x86_64-pc-linux-gnu/bin/objcopy: Warning: '/dev/null' is not an ordinary file