#source: undef.s
#ld: -r
#readelf: -s

Symbol table '.symtab' contains .* entries:
 +Num: +Value +Size +Type +Bind +Vis +Ndx +Name
#...
 +[0-9]+: [0-9a-fA-F]+ +0 +NOTYPE +GLOBAL +INTERNAL +UND internal
#pass
