Segmentation fault (stack overflow) in Zend
Open
Nobody has claimed this yet.
Bug
Category: Engine
Status: Verified
- Dominant language
- C
- Stars
- 40.4k
- Forks
- 8.1k
- Avg merge
- 2d 13h
- Merged PRs (30d)
- 96
Description
Description
The following code:
<?php
function test($vars) {
}
function foo() {
foreach ($array as $value) {
try {
try {
foreach ($array as $_) {
}
} finally {
throw new Exception;
}
} catch (Exception $e) { }
}
}
for ($i=0; $fusion < 550; $i++) {
$array = array($array);
}
Resulted in this output:
Segmentation fault (core dumped)
this seems to crash very old php like php 5.5
PHP Version
PHP 8.4.0-dev
Operating System
ubuntu 22.04
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source file or test is named. First reproduce the segmentation fault on PHP 8.4.0-dev under Ubuntu 22.04 using the supplied nested foreach/try-finally code and recursive array construction, then trace the Zend execution path involved; done means the reproducer no longer crashes and a regression test covers it.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- php
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100