segmentation fault #19685
Description
Description
The following code:
<?php
$v_39192 = 'AAAAAAAA';
$v_39193 = array('blocks' => $v_39192,);
$v_39212 = 'data://text/plain,HTTP/1.1 200 Ok\r\n';
$v_39205 = 'data://text/plain,HTTP/1.1 302 Moved Temporarily\r\n';
$v_39206 = 'Location: /try-again\r\n';
$v_39207 = $v_39205 . $v_39206;
if($v_39207){
$v_39208 = 'Transfer-Encoding: chunked\r\n\r\n';
$v_39209 = $v_39207 . $v_39208;
$v_39197 = fopen($v_39212,$v_39209,);
$v_39198 = 'bzip2.compress';
$v_39199 = STREAM_FILTER_WRITE;
$v_39193 = array('blocks' => $v_39192,);
$v_39221 = $v_39208 . $v_39198;
$v_39200 = stream_filter_append($v_39197,$v_39198,$v_39199,$v_39193,);
$v_39201 = fclose($v_39197,);
}Resulted in this output:
Warning: stream_filter_append(): Invalid parameter given for number of blocks to allocate (0) in 078610c315f54a6f36d4.php.er on line 16
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1869751==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x000000000000 bp 0x7ffee4975890 sp 0x7ffee4975518 T0)
==1869751==Hint: pc points to the zero page.
==1869751==The signal is caused by a READ memory access.
==1869751==Hint: address points to the zero page.
#0 0x0 (<unknown module>)
#1 0x15080d9df51f (/lib/x86_64-linux-gnu/libc.so.6+0x4251f)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (<unknown module>)
==1869751==ABORTING
But I expected this output instead:
PHP Version
PHP 8.5.0-dev (cli) (built: Sep 3 2025 09:48:58) (ZTS DEBUG)
Copyright (c) The PHP Group
Zend Engine v4.5.0-dev, Copyright (c) Zend Technologies
with Zend OPcache v8.5.0-dev, Copyright (c), by Zend Technologies
Operating System
20.04