+#if VMG_HAS_PERL(5, 10, 0)
+ /* This context should not be used anymore, but since we croak in places the
+ * core doesn't even dare to, some pointers to it may remain in the upper call
+ * stack. Make sure call_sv() doesn't clobber it. */
+ if (cxstack_ix >= cxstack_max)
+ Perl_cxinc(aTHX);
+ saved_cx = cxstack[cxstack_ix + 1];
+#endif
+