#source: pr19636-2.s
#as: --64 -mrelax-relocations=no
#ld: -pie -E -m elf_x86_64 --no-dynamic-linker
#readelf : --wide --dyn-syms
#failif
#...
+[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?