From 32e8155127126c187ce32f7368742057bcaf69da Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <email@mattatobin.com>
Date: Fri, 17 Apr 2020 05:47:12 -0400
Subject: Bug 1372829 - Part 2: mozilla::EditorBase should cache raw pointer of
 nsISelectionController and nsIDocument with nsWeakPtr

Tag #1375
---
 xpcom/glue/nsWeakReference.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'xpcom/glue')

diff --git a/xpcom/glue/nsWeakReference.cpp b/xpcom/glue/nsWeakReference.cpp
index 57f372641..be263e1c2 100644
--- a/xpcom/glue/nsWeakReference.cpp
+++ b/xpcom/glue/nsWeakReference.cpp
@@ -37,6 +37,7 @@ public:
   // nsIWeakReference...
   NS_DECL_NSIWEAKREFERENCE
   virtual size_t SizeOfOnlyThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
+  bool IsAlive() const override { return mReferent != nullptr; }
 
 private:
   MOZ_WEAKREF_DECL_OWNINGTHREAD
-- 
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