#define xsh_dup(S, P) sv_dup((S), (P))
#define xsh_dup_inc(S, P) SvREFCNT_inc(xsh_dup((S), (P)))
-/* Context for PerlMemShared_*() functions */
-#ifdef PERL_IMPLICIT_SYS
-# define pPMS pTHX
-# define pPMS_ pTHX_
-# define aPMS aTHX
-# define aPMS_ aTHX_
-#else
-# define pPMS void
-# define pPMS_
-# define aPMS
-# define aPMS_
-#endif
-
#ifdef USE_ITHREADS
# define XSH_LOCK(M) MUTEX_LOCK(M)
# define XSH_UNLOCK(M) MUTEX_UNLOCK(M)