Patch-Source: https://github.com/php/php-src/commit/2d86f8cf489ea5410edd19d301c1aefe330599ab
From ba2ede2740f05066a390886fb432571043c49876 Mon Sep 17 00:00:00 2001
From: Ilija Tovilo <ilija.tovilo@me.com>
Date: Thu, 30 Jul 2026 14:29:58 +0200
Subject: [PATCH 4/4] Fix leak on double DatePeriod::__construct() call

Closes GH-22643

(cherry picked from commit 2d86f8cf489ea5410edd19d301c1aefe330599ab)

PHP 8.1 adaptation: DATE_CHECK_INITIALIZED() stringifies its second
argument on this branch, so pass the DateInterval class name literally
instead of Z_OBJCE_P(interval), which would otherwise be printed
verbatim in the error message.
---
 ext/date/php_date.c                           | 20 ++++++++++++++++++-
 .../DatePeriod_double_constructor_call.phpt   | 14 +++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 ext/date/tests/DatePeriod_double_constructor_call.phpt

diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index fe58eba5c89..6b3842e64be 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -4283,6 +4283,23 @@ static bool date_period_initialize(timelib_time **st, timelib_time **et, timelib
 	return retval;
 } /* }}} */
 
+static void date_period_reset(php_period_obj *period_obj)
+{
+	if (period_obj->start) {
+		timelib_time_dtor(period_obj->start);
+	}
+	if (period_obj->current) {
+		timelib_time_dtor(period_obj->current);
+	}
+	if (period_obj->end) {
+		timelib_time_dtor(period_obj->end);
+	}
+	if (period_obj->interval) {
+		timelib_rel_time_dtor(period_obj->interval);
+	}
+	memset(period_obj, 0, XtOffsetOf(php_period_obj, std));
+}
+
 /* {{{ Creates new DatePeriod object. */
 PHP_METHOD(DatePeriod, __construct)
 {
@@ -4304,7 +4321,7 @@ PHP_METHOD(DatePeriod, __construct)
 	}
 
 	dpobj = Z_PHPPERIOD_P(ZEND_THIS);
-	dpobj->current = NULL;
+	date_period_reset(dpobj);
 
 	if (isostr) {
 		if (!date_period_initialize(&(dpobj->start), &(dpobj->end), &(dpobj->interval), &recurrences, isostr, isostr_len)) {
@@ -4343,6 +4360,7 @@ PHP_METHOD(DatePeriod, __construct)
 		if (end) {
 			DATE_CHECK_INITIALIZED(Z_PHPDATE_P(end)->time, DateTimeInterface);
 		}
+		DATE_CHECK_INITIALIZED(Z_PHPINTERVAL_P(interval)->initialized, DateInterval);
 
 		/* init */
 		php_interval_obj *intobj = Z_PHPINTERVAL_P(interval);
diff --git a/ext/date/tests/DatePeriod_double_constructor_call.phpt b/ext/date/tests/DatePeriod_double_constructor_call.phpt
new file mode 100644
index 00000000000..551d2727282
--- /dev/null
+++ b/ext/date/tests/DatePeriod_double_constructor_call.phpt
@@ -0,0 +1,14 @@
+--TEST--
+Double DatePeriod::__construct() call
+--FILE--
+<?php
+
+$start = new \DateTime();
+$interval = new \DateInterval('P1D');
+$period = new \DatePeriod($start, $interval, 1);
+$period->__construct($start, $interval, 1);
+
+?>
+===DONE===
+--EXPECT--
+===DONE===