ERROR_RETURN     1520 ext/pcre/pcrelib/pcre_compile.c if (c == CHAR_NULL) goto ERROR_RETURN;
ERROR_RETURN     1537 ext/pcre/pcrelib/pcre_compile.c     if (c == CHAR_NULL) goto ERROR_RETURN;
ERROR_RETURN     1541 ext/pcre/pcrelib/pcre_compile.c   if (c != CHAR_RIGHT_CURLY_BRACKET) goto ERROR_RETURN;
ERROR_RETURN     1578 ext/pcre/pcrelib/pcre_compile.c ERROR_RETURN: