#source: compress1.s
#as: --compress-debug-sections
#ld: -e func_cu2
#readelf: -S --wide
#notarget: alpha-*
#failif
#...
\[[ 0-9]+\] \.zdebug_.*[ ]+(PROGBITS|MIPS_DWARF)[ 0-9a-z]+ .*