hash() function hangs endlessly if using sha512 on strings >= 4GiB

[bug-fix0r]

Description

The following script hangs endlessly.

<?php $t = time();
echo hash("sha512", str_repeat("x", 1024*1024*1024*4-1));
echo "\ncalculating hash took ".(time() - $t)."s\n";
$t = time();
echo hash("sha512", str_repeat("x", 1024*1024*1024*4));
echo "\ncalculating hash took ".(time() - $t)."s\n"; ?>

Resulted in this output:

f918f25f32fe81f274619743e661a4158f176384d74b46bce7c4305f160119ce727204db2910ff287535ca2e40c2a98f2d23b40c82afbcca750a532b9843e3bc
calculating hash took 14s

But I expected this output instead:

f918f25f32fe81f274619743e661a4158f176384d74b46bce7c4305f160119ce727204db2910ff287535ca2e40c2a98f2d23b40c82afbcca750a532b9843e3bc
calculating hash took 14s
...hash goes here...
calculating hash took 14s

PHP Version

PHP 8.2.10-2ubuntu1 (cli) (built: Sep 5 2023 14:37:47) (NTS)

Operating System

KUbuntu 23.10

[ndossche]

Looks like it's using unsigned int in some places... I'll check them all.