D:\>perl -MDevel::Peek -le "my @empty = (); Dump(scalar @empty)"
SV = PVNV(0x1a1928ddce0) at 0x1a1928dbb10
  REFCNT = 2147483647
  FLAGS = (PADTMP,IOK,NOK,POK,READONLY,PROTECT,pIOK,pNOK,pPOK)
  IV = 0
  NV = 0
  PV = 0x7ffe685399a1 "0"
  CUR = 1
  LEN = 0

D:\>perl -MDevel::Peek -le "our @empty = (); Dump(scalar @empty)"
SV = IV(0x178a86f0650) at 0x178a86f0660
  REFCNT = 1
  FLAGS = (PADTMP,IOK,pIOK)
  IV = 0