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Signed integer overflow in ext/standard/pack.c #15613
Description
Description
The following code:
<?php
unpack('h2147483647', str_repeat('X', 2**31 + 10));
?>Resulted in this output:
/php-src/ext/standard/pack.c:981:36: runtime error: signed integer overflow: 1073741824 * 2 cannot be represented in type 'int'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /php-src/ext/standard/pack.c:981:36 in
To reproduce:
php -d "memory_limit=-1" test.php
PHP Version
PHP 8.4.0-dev
Operating System
ubuntu 22.04
Activity
Fix phpGH-15613: unpack on format hex strings repeater value.
Fix GH-15613: unpack on format hex strings repeater value.