    REG_MATCH_NULL_STRING_P 1350 libglibc/regex.c 			REG_MATCH_NULL_STRING_P (reg_info[this_reg]));	\
    REG_MATCH_NULL_STRING_P 4046 libglibc/regex.c       REG_MATCH_NULL_STRING_P (reg_info[mcnt]) = MATCH_NULL_UNSET_VALUE;
    REG_MATCH_NULL_STRING_P 4374 libglibc/regex.c           if (REG_MATCH_NULL_STRING_P (reg_info[*p]) == MATCH_NULL_UNSET_VALUE)
    REG_MATCH_NULL_STRING_P 4375 libglibc/regex.c             REG_MATCH_NULL_STRING_P (reg_info[*p])
    REG_MATCH_NULL_STRING_P 4383 libglibc/regex.c           old_regstart[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
    REG_MATCH_NULL_STRING_P 4424 libglibc/regex.c           old_regend[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
    REG_MATCH_NULL_STRING_P 5437 libglibc/regex.c       if (REG_MATCH_NULL_STRING_P (reg_info[reg_no]) == MATCH_NULL_UNSET_VALUE)
    REG_MATCH_NULL_STRING_P 5438 libglibc/regex.c         REG_MATCH_NULL_STRING_P (reg_info[reg_no]) = ret;
    REG_MATCH_NULL_STRING_P 5469 libglibc/regex.c       if (!REG_MATCH_NULL_STRING_P (reg_info[*p1]))