Nico Rieck:  this patch series fixes visibility issues on Windows as explained in <http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-August/031214.html>.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@188192 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/ext/__hash b/include/ext/__hash
index f6ecfe3..04975bf 100644
--- a/include/ext/__hash
+++ b/include/ext/__hash
@@ -19,10 +19,10 @@
 namespace __gnu_cxx {
 using namespace std;
 
-template <typename T> struct _LIBCPP_TYPE_VIS hash : public std::hash<T>
+template <typename T> struct _LIBCPP_TYPE_VIS_ONLY hash : public std::hash<T>
     { };
 
-template <> struct _LIBCPP_TYPE_VIS hash<const char*>
+template <> struct _LIBCPP_TYPE_VIS_ONLY hash<const char*>
     : public unary_function<const char*, size_t>
 {
     _LIBCPP_INLINE_VISIBILITY
@@ -32,7 +32,7 @@
     }
 };
 
-template <> struct _LIBCPP_TYPE_VIS hash<char *>
+template <> struct _LIBCPP_TYPE_VIS_ONLY hash<char *>
     : public unary_function<char*, size_t>
 {
     _LIBCPP_INLINE_VISIBILITY