OP_STATE_CHECK    968 regcomp.c            r = add_opcode(reg, OP_STATE_CHECK);
OP_STATE_CHECK   6245 regcomp.c        { OP_STATE_CHECK,              "state-check",              ARG_STATE_CHECK },
OP_STATE_CHECK   2837 regexec.c          CASE(OP_STATE_CHECK)  MOP_IN(OP_STATE_CHECK);