diff -Nru pcre3-8.39/debian/changelog pcre3-8.39/debian/changelog
--- pcre3-8.39/debian/changelog	2018-07-21 13:59:04.000000000 +0000
+++ pcre3-8.39/debian/changelog	2018-08-17 01:23:07.000000000 +0000
@@ -1,3 +1,9 @@
+pcre3 (2:8.39-11+rpi1) buster-staging; urgency=medium
+
+  * Mark another STL symbol as optional.
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Fri, 17 Aug 2018 01:23:07 +0000
+
 pcre3 (2:8.39-11) unstable; urgency=medium
 
   [ Matthias Klose ]
diff -Nru pcre3-8.39/debian/libpcrecpp0v5.symbols pcre3-8.39/debian/libpcrecpp0v5.symbols
--- pcre3-8.39/debian/libpcrecpp0v5.symbols	2018-07-21 13:48:28.000000000 +0000
+++ pcre3-8.39/debian/libpcrecpp0v5.symbols	2018-08-17 01:22:57.000000000 +0000
@@ -1,6 +1,6 @@
 libpcrecpp.so.0 libpcrecpp0v5 #MINVER#
  (c++|optional=STL)"void std::vector<pcrecpp::StringPiece, std::allocator<pcrecpp::StringPiece> >::_M_realloc_insert<pcrecpp::StringPiece>(__gnu_cxx::__normal_iterator<pcrecpp::StringPiece*, std::vector<pcrecpp::StringPiece, std::allocator<pcrecpp::StringPiece> > >, pcrecpp::StringPiece&&)@Base" 2:8.39-9
- (c++)"void std::vector<pcrecpp::StringPiece, std::allocator<pcrecpp::StringPiece> >::emplace_back<pcrecpp::StringPiece>(pcrecpp::StringPiece&&)@Base" 2:8.39-10
+ (c++|optional=STL)"void std::vector<pcrecpp::StringPiece, std::allocator<pcrecpp::StringPiece> >::emplace_back<pcrecpp::StringPiece>(pcrecpp::StringPiece&&)@Base" 2:8.39-10
  (c++|optional=STL)"void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char const*>(char const*, char const*, std::forward_iterator_tag)@Base" 2:8.39-10
  (c++)"operator<<(std::basic_ostream<char, std::char_traits<char> >&, pcrecpp::StringPiece const&)@Base" 8.38
  (c++)"pcrecpp::Arg::parse_char(char const*, int, void*)@Base" 7.7