From 5d88ea5c75810111d8476a2d5885be92f607a316 Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Mon, 30 Oct 2017 12:47:22 +0300
Subject: [PATCH] Update UPGRADING.INTERNALS

---
 UPGRADING.INTERNALS | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index ff56dfa6555..65ea83b6037 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -14,6 +14,7 @@ PHP 7.2 INTERNALS UPGRADE NOTES
   k. Array/Object recursion protection
   l. HASH_FLAG_PERSISTENT
   m. AST and IS_CONSTANT
+  n. GC_REFCOUNT()
 
 2. Build system changes
   a. Unix build system changes
@@ -99,6 +100,14 @@ PHP 7.2 INTERNALS UPGRADE NOTES
      attributes are used instead of constant flags. IS_TYPE_CONSTANT flag is
      removed, but Z_CONSTANT() macro is kept for compatibility.
 
+  m. GC_REFCOUNT() is turned into inline function and can't be modified direcly.
+     All reference-counting operations should be done through corresponding
+     macros GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF().
+
+     GC_REFCOUNT(p)++ should be changed into GC_ADDREF(p),
+     GC_REFCOUNT(p)-- into GC_DELREF(p),
+     GC_REFCOUNT(p) = 1 into GC_SET_REFCOUNT(p, 1).
+
 ========================
 2. Build system changes
 ========================