PCRE_REQCHSET    6170 ext/pcre/pcrelib/pcre_compile.c   re->flags |= PCRE_REQCHSET;
PCRE_REQCHSET    6192 ext/pcre/pcrelib/pcre_compile.c if ((re->flags & PCRE_REQCHSET) != 0)
PCRE_REQCHSET    4624 ext/pcre/pcrelib/pcre_exec.c if ((re->flags & PCRE_REQCHSET) != 0)
PCRE_REQCHSET     126 ext/pcre/pcrelib/pcre_fullinfo.c     ((re->flags & PCRE_REQCHSET) != 0)? re->req_byte : -1;