while (val = hv_iternext_flags((HV*) sstr, HV_ITERNEXT_WANTPLACEHOLDERS)) {

##</code><code>##

    warn( "gc_note_sv12.2.1" );
    sv_dump( sstr );
    warn( "magic follows" );
    sv_dump( SvMAGIC(sstr) );
    while (val = hv_iternext_flags((HV*) sstr, HV_ITERNEXT_WANTPLACEHOLDERS)) {

##</code><code>##

gc_note_sv12.2.1 at testhelper.pl line 13.
SV = PVHV(0x9c99a30) at 0x9d19c7c
  REFCNT = 1
  FLAGS = (RMG,SHAREKEYS)
  IV = 0
  NV = 0
  MAGIC = 0x9de2398
    MG_VIRTUAL = &PL_vtbl_pack
    MG_TYPE = PERL_MAGIC_tied(P)
    MG_FLAGS = 0x02
      REFCOUNTED
    MG_OBJ = 0x9dd7520
        SV = RV(0x9cb4d30) at 0x9dd7520
          REFCNT = 1
          FLAGS = (ROK)
          RV = 0x9dd752c
  ARRAY = 0x0
  KEYS = 0
  FILL = 0
  MAX = 7
  RITER = -1
  EITER = 0x0
magic follows at testhelper.pl line 13.
SV = NULL(0x0) at 0x9de2398
  REFCNT = 6251956
  FLAGS = (FAKE,pNOK)