From d8106992aa976e999180db643bf2693720ed6911 Mon Sep 17 00:00:00 2001
From: Jay Krell <jay.krell@cornell.edu>
Date: Wed, 20 Oct 2021 19:32:53 -0700
Subject: [PATCH] Replace { } with BOOST_DEFAULTED_FUNCTION for C++03
 compatibility.

---
 include/boost/iostreams/filtering_stream.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/iostreams/filtering_stream.hpp b/include/boost/iostreams/filtering_stream.hpp
index 0f376605b..79caf5504 100644
--- a/include/boost/iostreams/filtering_stream.hpp
+++ b/include/boost/iostreams/filtering_stream.hpp
@@ -93,7 +93,9 @@ class filtering_stream_base
                  typename Chain::char_type, 
                  typename Chain::traits_type
             >::stream_type                                stream_type;
-    ~filtering_stream_base() BOOST_NOEXCEPT = default;
+
+    BOOST_DEFAULTED_FUNCTION(~filtering_stream_base() BOOST_NOEXCEPT, { })
+
     filtering_stream_base() : stream_type(0) { this->set_chain(&chain_); }
 private:
     void notify() { this->rdbuf(chain_.empty() ? 0 : &chain_.front()); }