fix: ensure env is not in an invalid state on shutdown #1442
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Fixes #1441
The issue is:
After releasing superglobals that have jit, they remain in an 'invalid state' as long as they are not reloaded (
$_SERVER,$_ENV,$_REQUEST). Since$_ENVis not reloaded in worker mode, accessing the global directly will lead to a segfault.Extensions like xdebug directly access the $_ENV global on shutdown.
This PR sets
$_ENVto an empty array on worker script shutdown to fix the segfault. Ideally,$_ENVwould not be released between requests, but I have not yet found a way to do so without causing a memory leak.