tmpdir/dwarf2b\.o:.*dwarf2b\.c:1: multiple definition of `global_var'
tmpdir/dwarf2a\.o:.*dwarf2a\.c:1: first defined here
#...
tmpdir/dwarf2b\.o:.*dwarf2b\.c:2: multiple definition of `other_var'
tmpdir/dwarf2a\.o:.*dwarf2a\.c:2: first defined here
#...