DBsingle
DBsub
DBtrace
-allgvs
ampergv
argvgv
argvoutgv
cddir
chopset
copline
-curblock
curcop
curcopdb
-curcsv
curpm
curstack
curstash
inplace
last_in_gv
lastfd
-lastretstr
lastscream
lastsize
lastspbase
sv_arenaroot
tainted
tainting
+threadnum
thrsv
tmps_floor
tmps_ix