---
title: VCL_RECV changes, x-compress-hint behavior change, bugfixes
summary: null
url: https://www.fastly.com/documentation/reference/changes/2024/05/vcl-changes
---

## Removed

- Support for calling `return (pipe)` from `vcl_recv` has been removed after previously being deprecated. No action is required, save for awareness that rollbacks to older service versions containing calls to `return(pipe)` from `vcl_recv` will be blocked. 

## Changed

- The `x-compress-hint` header will now only be added on ESI requests if it was not previously set. This is a change from the previous behavior, which was to automatically append `x-compress-hint` to on for ESI requests. 
  This change allows a VCL service to override the `x-compress-hint` set by ESI. Existing logic should continue to work as it does today, however any existing activated services that have been setting the `x-compress-hint` header before ESI will now find their logic overriding the automatic setting.

## Added

- [Documentation](https://www.fastly.com/documentation/reference/vcl/functions/miscellaneous/fastly-try-select-shield/) is now available for `fastly.try_select_shield`.

## Fixed

- A bugfix has been made regarding workspace memory usage and [std.count](https://www.fastly.com/documentation/reference/vcl/functions/miscellaneous/std-count/).