/* Using C's structural equivalence to help emulate C++ inheritance here... */
-struct STRUCT_SV {
+struct STRUCT_SV { /* struct sv { */
void* sv_any; /* pointer to something */
U32 sv_refcnt; /* how many references to us */
U32 sv_flags; /* what we are */
#define CLONEf_COPY_STACKS 1
#define CLONEf_KEEP_PTR_TABLE 2
+#define CLONEf_CLONE_HOST 4
typedef struct {
AV* stashes;