Core:
    Fixed freeing of internal attribute arguments.
    Fixed bug #8070 (memory leak of internal function attribute hash).
    Fixed bug #8160 (ZTS support on Alpine is broken).
Filter:
    Fixed signedness confusion in php_filter_validate_domain().
Intl:
    Fixed bug #8142 (Compilation error on cygwin).
MBString:
    Fixed bug #8208 (mb_encode_mimeheader: $indent functionality broken).
MySQLi:
    Fixed bug #8068 (mysqli_fetch_object creates inaccessible properties).
Pcntl:
    Fixed bug #8142 (Compilation error on cygwin).
PgSQL:
    Fixed result_type related stack corruption on LLP64 architectures.
    Fixed bug #8253 (pg_insert() fails for references).
Sockets:
    Fixed Solaris builds.
SPL:
    Fixed bug #8121 (SplFileObject - seek and key with csv file inconsistent).
Standard:
    Fixed bug #8048 (Force macOS to use statfs).