Fix GH-14709 overflow on reccurences for DatePeriod::__construct

Author: devnexen

ext/date/php_date.c

@@ -4798,9 +4798,9 @@ PHP_METHOD(DatePeriod, __construct)
 		}
 	}
 
-	if (dpobj->end == NULL && recurrences < 1) {
+	if (dpobj->end == NULL && (recurrences < 1 || ZEND_LONG_INT_OVFL(recurrences))) {
 		zend_string *func = get_active_function_or_method_name();
-		zend_throw_exception_ex(NULL, 0, "%s(): Recurrence count must be greater than 0", ZSTR_VAL(func));
+		zend_throw_exception_ex(NULL, 0, "%s(): Recurrence count must be between 1 and %d", ZSTR_VAL(func), INT_MAX);
 		zend_string_release(func);
 		RETURN_THROWS();
 	}
@@ -4809,7 +4809,7 @@ PHP_METHOD(DatePeriod, __construct)
 	dpobj->include_start_date = !(options & PHP_DATE_PERIOD_EXCLUDE_START_DATE);
 	dpobj->include_end_date = options & PHP_DATE_PERIOD_INCLUDE_END_DATE;
 
-	/* recurrrences */
+	/* recurrences */
 	dpobj->recurrences = recurrences + dpobj->include_start_date + dpobj->include_end_date;
 
 	dpobj->initialized = 1;

ext/date/tests/gh14709.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Bug GH-14709 overflow on reccurences parameter
+--FILE--
+<?php
+$start = new DateTime('2018-12-31 00:00:00');
+$interval = new DateInterval('P1M');
+
+try {
+	new DatePeriod($start, $interval, PHP_INT_MAX);
+} catch (Exception $e) {
+	echo $e->getMessage();
+}
+--EXPECTF--
+DatePeriod::__construct(): Recurrence count must be between 1 and %d