$ perl -we'use Devel::Peek; ($x="abc")=~/.??/gc; Dump $x'
SV = PVMG(0x10183f00) at 0x10167ca4
  REFCNT = 1
  FLAGS = (SMG,POK,pPOK)
  IV = 0
  NV = 0
  PV = 0x10142828 "abc"\0
  CUR = 3
  LEN = 4
  MAGIC = 0x10147380
    MG_VIRTUAL = &PL_vtbl_mglob
    MG_TYPE = PERL_MAGIC_regex_global(g)
    MG_FLAGS = 0x01
      MINMATCH