From 342f8301e99b5bcd2318631e2b6631da3f71a573 Mon Sep 17 00:00:00 2001
From: Akira Takahashi <faithandbrave@gmail.com>
Date: Thu, 11 Apr 2019 12:46:23 +0900
Subject: [PATCH] add forward declaration of atomic class for
 atomic<shared_ptr<T>>

---
 source/utilities.tex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/utilities.tex b/source/utilities.tex
index e11319da09..9dffd6307c 100644
--- a/source/utilities.tex
+++ b/source/utilities.tex
@@ -7004,6 +7004,7 @@
   template<class T> struct hash<shared_ptr<T>>;
 
   // \ref{util.smartptr.atomic}, atomic smart pointers
+  template<class T> struct atomic;
   template<class T> struct atomic<shared_ptr<T>>;
   template<class T> struct atomic<weak_ptr<T>>;
 }