+#ifdef PERL_COPY_ON_WRITE
+#define RX_MATCH_COPY_FREE(rx) \
+ STMT_START {if (rx->saved_copy) { \
+ SV_CHECK_THINKFIRST_COW_DROP(rx->saved_copy); \
+ } \
+ if (RX_MATCH_COPIED(rx)) { \
+ Safefree(rx->subbeg); \
+ RX_MATCH_COPIED_off(rx); \
+ }} STMT_END
+#else
+#define RX_MATCH_COPY_FREE(rx) \
+ STMT_START {if (RX_MATCH_COPIED(rx)) { \
+ Safefree(rx->subbeg); \
+ RX_MATCH_COPIED_off(rx); \
+ }} STMT_END
+#endif
+
+#define RX_MATCH_UTF8(prog) ((prog)->reganch & ROPT_MATCH_UTF8)
+#define RX_MATCH_UTF8_on(prog) ((prog)->reganch |= ROPT_MATCH_UTF8)
+#define RX_MATCH_UTF8_off(prog) ((prog)->reganch &= ~ROPT_MATCH_UTF8)
+#define RX_MATCH_UTF8_set(prog, t) ((t) \
+ ? (RX_MATCH_UTF8_on(prog), (PL_reg_match_utf8 = 1)) \
+ : (RX_MATCH_UTF8_off(prog), (PL_reg_match_utf8 = 0)))
+