From 1025318ca9741b390e04441e627eb7575661309a Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Wed, 6 Jul 2011 22:56:44 +0000
Subject: Update document for objc_arc_weak_unavailable attribute on class
 declarations. Documentation for // rdar://9693477

llvm-svn: 134558
---
 clang/docs/AutomaticReferenceCounting.html | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'clang/docs')

diff --git a/clang/docs/AutomaticReferenceCounting.html b/clang/docs/AutomaticReferenceCounting.html
index 280462481cf..11bd020b751 100644
--- a/clang/docs/AutomaticReferenceCounting.html
+++ b/clang/docs/AutomaticReferenceCounting.html
@@ -728,7 +728,10 @@ new pointee, unless that object is currently undergoing deallocation,
 in which case it the lvalue is updated to a null pointer.  This must
 execute atomically with respect to other assignments to the object, to
 reads from the object, and to the final release of the new pointed-to
-value.</li>
+value. If class is not compatible with weak references, 
+<tt>objc_arc_weak_unavailable</tt>
+attribute must be specified on class declaration to disallow weak 
+references to their objects.</li>
 <li>For <tt>__unsafe_unretained</tt> objects, the new pointee is
 stored into the lvalue using primitive semantics.</li>
 <li>For <tt>__autoreleasing</tt> objects, the new pointee is retained,
-- 
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