Core:
    Fixed bug #79423 (copy command is limited to size of file it can copy).
Calendar:
    Fixed bug #80185 (jdtounix() fails after 2037).
IMAP:
    Fixed bug #80213 (imap_mail_compose() segfaults on certain $bodies).
    Fixed bug #80215 (imap_mail_compose() may modify by-val parameters).
    Fixed bug #80220 (imap_mail_compose() may leak memory).
    Fixed bug #80223 (imap_mail_compose() leaks envelope on malformed bodies).
    Fixed bug #80216 (imap_mail_compose() does not validate types/encodings).
    Fixed bug #80226 (imap_sort() leaks sortpgm memory).
MySQLnd:
    Fixed bug #80115 (mysqlnd.debug doesn't recognize absolute paths with slashes).
    Fixed bug #80107 (mysqli_query() fails for ~16 MB long query when compression is enabled).
ODBC:
    Fixed bug #78470 (odbc_specialcolumns() no longer accepts $nullable).
    Fixed bug #80147 (BINARY strings may not be properly zero-terminated).
    Fixed bug #80150 (Failure to fetch error message).
    Fixed bug #80152 (odbc_execute() moves internal pointer of $params).
    Fixed bug #46050 (odbc_next_result corrupts prepared resource).
OPcache:
    Fixed bug #80083 (Optimizer pass 6 removes variables used for ibm_db2 data binding).
PDO_ODBC:
    Fixed bug #67465 (NULL Pointer dereference in odbc_handle_preparer).
Standard:
    Fixed bug #80114 (parse_url does not accept URLs with port 0).
    Fixed bug #76943 (Inconsistent stream_wrapper_restore() errors).
    Fixed bug #76735 (Incorrect message in fopen on invalid mode).
Tidy:
    Fixed bug #77040 (tidyNode::isHtml() is completely broken).