5 when a new glob is created for an OPpLVAL_INTRO,
6 curcop->cop_line is stored as GvLINE() in the new GP.
8 curcop->cop_stash is used as the stash in the one-arg form of bless
11 tests (curcop != &compiling) to warn "Can't x= to readonly value"
23 curcop->cop_stash used to determine whether to gv_fetchpv $a and $b
26 tests (curcop->cop_stash == debstash) to determine whether
30 resets vars in curcop->cop_stash
33 sets curcop = (COP*)op
36 compiles into curcop->cop_stash
39 sets curcop = (COP*)op