From 2f16e31afcf065cbe9c903889c0bb74f0bb2adb0 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Wed, 6 Nov 2019 16:52:54 +0100
Subject: [PATCH] Kernel: A running process should keep its TTY alive

It's not safe to use a raw pointer for Process::m_tty. A pseudoterminal
pair will disappear when file descriptors are closed, and we'd end up
looking dangly. Just use a RefPtr.
---
 Kernel/Process.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kernel/Process.h b/Kernel/Process.h
index 63470bce86..236579e9c2 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -348,7 +348,7 @@ private:
     RefPtr<Custody> m_executable;
     RefPtr<Custody> m_cwd;
 
-    TTY* m_tty { nullptr };
+    RefPtr<TTY> m_tty;
 
     Region* region_from_range(const Range&);
     Region* region_containing(const Range&);