---
title: "Generating a Backtrace"
version: "5.19"
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.phalcon.io/llms.txt
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# Generating a Backtrace

Phalcon's v5 distribution is compiled into a C extension loaded on your web server. Because of that, bugs can lead to segmentation faults, causing Phalcon to crash some of your web server processes.

:::info[NOTE]
This guide applies to the Phalcon v5 C extension. The Phalcon v6 `phalcon/phalcon` package is pure PHP and does not produce segmentation faults, so a C backtrace is not needed there.
:::

For debugging these segmentation faults a stack trace is required. Creating a stack trace requires a special build of PHP and some steps need to be done to generate a trace that allows the Phalcon team to debug this behavior.

Please follow this guide to understand how to generate the backtrace.

[https://bugs.php.net/bugs-generating-backtrace.php](https://bugs.php.net/bugs-generating-backtrace.php)

[https://bugs.php.net/bugs-generating-backtrace-win32.php](https://bugs.php.net/bugs-generating-backtrace-win32.php)

Source: https://docs.phalcon.io/5.19/generating-backtrace/index.mdx