merge revision(s) 52e571fa72debcd764765775bd1b76ee87e36d2d: [Backport #19580]

	Ensure ruby_xfree won't segfault if called after vm_destruct

	[Bug #19580]

	The real-world scenario motivating this change is libxml2's pthread
	code which uses `pthread_key_create` to set up a destructor that is
	called at thread exit to free thread-local storage.

	There is a small window of time -- after ruby_vm_destruct but before
	the process exits -- in which a pthread may exit and the destructor is
	called, leading to a segfault.

	Please note that this window of time may be relatively large if
	`atexit` is being used.
	---
	 gc.c | 12 ++++++++++--
	 1 file changed, 10 insertions(+), 2 deletions(-)

0 files changed, 0 insertions, 0 deletions