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Signed Integer Overflow in pack() #18976
Description
Description
The following code:
<?php
pack('h2147483647', 1);
?>Resulted in this output:
/home/program/ext/standard/pack.c:389:5: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /home/program/ext/standard/pack.c:389:5 in
But I expected this output instead:
Warning: pack(): Type h: not enough characters in string in /home/bug-1.php on line 3
PHP Version
PHP 8.5.0-dev (cli) (built: Jun 4 2025 20:21:49) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.5.0-dev, Copyright (c) Zend Technologies
Operating System
Ubuntu 20.04
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