Core
- Fixed bug GH-11937 (Constant ASTs containing objects).
- Fixed bug GH-11790 (On riscv64 require libatomic if actually needed).
- Fixed bug GH-11876: ini_parse_quantity() accepts invalid quantities.
- Fixed bug GH-12073 (Segfault when freeing incompletely initialized closures).
- Fixed bug GH-12060 (Internal iterator rewind handler is called twice).
- Fixed bug GH-12102 (Incorrect compile error when using array access on TMP value in function call).
DOM
- Fix memory leak when setting an invalid DOMDocument encoding.
Iconv
- Fixed build for NetBSD which still uses the old iconv signature.
Intl
- Fixed bug GH-12020 (intl_get_error_message() broken after MessageFormatter::formatMessage() fails).
MySQLnd
- Fixed bug GH-10270 (Invalid error message when connection via SSL fails: "trying to connect via (null)").
ODBC
- Fixed memory leak with failed SQLPrepare.
- Fixed persistent procedural ODBC connections not getting closed.
SimpleXML
- Fixed bug #52751 (XPath processing-instruction() function is not supported).
SPL
- Fixed bug GH-11972 (RecursiveCallbackFilterIterator regression in 8.1.18).
SQLite3
- Fixed bug GH-11878 (SQLite3 callback functions cause a memory leak with a callable array).