+#ifdef USE_ITHREADS
+#define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
+#define PM_SETRE(o,r) STMT_START { SV* sv = PL_regex_pad[(o)->op_pmoffset]; sv_setiv(sv, PTR2IV(r)); } STMT_END
+#define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
+#define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
+#else
+#define PM_GETRE(o) ((o)->op_pmregexp)
+#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
+#define PM_GETRE_SAFE PM_GETRE
+#define PM_SETRE_SAFE PM_SETRE
+#endif
+