>perl -T -MDevel::Peek -e"Dump($ARGV[0])" foo
SV = PVMG(0x1822dcc) at 0x226ba0
  REFCNT = 1
  FLAGS = (GMG,SMG,pPOK)
  IV = 0
  NV = 0
  PV = 0x182d324 "foo"\0
  CUR = 3
  LEN = 4
  MAGIC = 0x182d33c
    MG_VIRTUAL = &PL_vtbl_taint
    MG_TYPE = PERL_MAGIC_taint(t)
    MG_LEN = 1