Signed integer overflow in ext/date/lib/unixtime2tm.c and ext/date/lib/parse_posix.c:493

[chongwick]

Description

The following code:

<?php
date_default_timezone_set("Asia/Tokyo");
echo date(DATE_RFC2822, PHP_INT_MAX);

Resulted in this output:

php-8.1.29/ext/date/lib/unixtime2tm.c:142:4: runtime error: signed integer overflow: 9223372036854775807 + 32400 cannot be represented in type 'long long int'

Changing the timezone changed the location of the error:

<?php
date_default_timezone_set("America/Los_Angeles");
echo date(DATE_RFC2822, PHP_INT_MAX);

Resulted in this output:

php-8.1.29/ext/date/lib/parse_posix.c:493:22: runtime error: signed integer overflow: 106751991167328 * 86400 cannot be represented in type 'long long int'

PHP Version

PHP 8.1.29

Operating System

No response

[YuanchengJiang]

dups to #14075

[cmb69]

Indeed a duplicate of #14075.