SV = IV(0x381af90) at 0x381afa0
  REFCNT = 1
  FLAGS = (PADMY,IOK,pIOK)
  IV = 123

SV = IV(0x381af90) at 0x381afa0
  REFCNT = 1
  FLAGS = (PADMY,IOK,pIOK,IsUV)
  UV = 9223372036854775809