Getting started on a visibility-decoration sweep.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@114440 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/iosfwd b/include/iosfwd
index f9ca1a6..204e1a4 100644
--- a/include/iosfwd
+++ b/include/iosfwd
@@ -95,29 +95,44 @@
 template<class _CharT>  struct _LIBCPP_VISIBLE char_traits;
 template<class _Tp>     class _LIBCPP_VISIBLE allocator;
 
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_ios;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_ios;
 
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_streambuf;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_istream;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_ostream;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_iostream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_streambuf;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_istream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_ostream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_iostream;
 
-template <class _CharT, class _Traits = char_traits<_CharT>,  class _Allocator = allocator<_CharT> >
-    class basic_stringbuf;
-template <class _CharT, class _Traits = char_traits<_CharT>,  class _Allocator = allocator<_CharT> >
-    class basic_istringstream;
-template <class _CharT, class _Traits = char_traits<_CharT>,  class _Allocator = allocator<_CharT> >
-    class basic_ostringstream;
-template <class _CharT, class _Traits = char_traits<_CharT>,  class _Allocator = allocator<_CharT> >
-    class basic_stringstream;
+template <class _CharT, class _Traits = char_traits<_CharT>,
+          class _Allocator = allocator<_CharT> >
+    class _LIBCPP_VISIBLE basic_stringbuf;
+template <class _CharT, class _Traits = char_traits<_CharT>,
+          class _Allocator = allocator<_CharT> >
+    class _LIBCPP_VISIBLE basic_istringstream;
+template <class _CharT, class _Traits = char_traits<_CharT>,
+          class _Allocator = allocator<_CharT> >
+    class _LIBCPP_VISIBLE basic_ostringstream;
+template <class _CharT, class _Traits = char_traits<_CharT>,
+          class _Allocator = allocator<_CharT> >
+    class _LIBCPP_VISIBLE basic_stringstream;
 
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_filebuf;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_ifstream;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_ofstream;
-template <class _CharT, class _Traits = char_traits<_CharT> > class basic_fstream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_filebuf;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_ifstream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_ofstream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE basic_fstream;
 
-template <class _CharT, class _Traits = char_traits<_CharT> > class istreambuf_iterator;
-template <class _CharT, class _Traits = char_traits<_CharT> > class ostreambuf_iterator;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE istreambuf_iterator;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+    class _LIBCPP_VISIBLE ostreambuf_iterator;
 
 typedef basic_ios<char>              ios;
 typedef basic_ios<wchar_t>           wios;
@@ -152,7 +167,7 @@
 typedef basic_ofstream<wchar_t>      wofstream;
 typedef basic_fstream<wchar_t>       wfstream;
 
-template <class _State>             class fpos;
+template <class _State>             class _LIBCPP_VISIBLE fpos;
 typedef fpos<mbstate_t>    streampos;
 typedef fpos<mbstate_t>    wstreampos;
 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
@@ -164,7 +179,8 @@
 
 template <class _CharT,             // for <stdexcept>
           class _Traits = char_traits<_CharT>,
-          class _Allocator = allocator<_CharT> > class _LIBCPP_VISIBLE basic_string;
+          class _Allocator = allocator<_CharT> >
+    class _LIBCPP_VISIBLE basic_string;
 typedef basic_string<char, char_traits<char>, allocator<char> > string;
 typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > wstring;