OP_NULL_CHECK_END_MEMST  393 regcomp.c            r = add_opcode(reg, OP_NULL_CHECK_END_MEMST);
OP_NULL_CHECK_END_MEMST 6229 regcomp.c        { OP_NULL_CHECK_END_MEMST,"null-check-end-memst", ARG_MEMNUM  },
OP_NULL_CHECK_END_MEMST 2753 regexec.c          CASE(OP_NULL_CHECK_END_MEMST)  MOP_IN(OP_NULL_CHECK_END_MEMST);