From 1706cb5937137ac0c63bfb4f6cad6bf206e38e70 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Fri, 3 Feb 2017 08:41:31 +0000
Subject: [PATCH 1/3] Add ticket link to changelog entry

---
 hash/doc/changes.qbk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hash/doc/changes.qbk b/hash/doc/changes.qbk
index 8918e0e..c458257 100644
--- a/hash/doc/changes.qbk
+++ b/hash/doc/changes.qbk
@@ -189,6 +189,6 @@
 [h2 Boost 1.64.0]
 
 * Fix for recent versions of Visual C++ which have removed `std::unary_function`
-  and `std::binary_function`.
+  and `std::binary_function` ([ticket 12353]).
 
 [endsect]

From 33eb0c50dcc87e4cfea3a088a45126f28f079ad9 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Wed, 31 May 2017 10:17:34 +0100
Subject: [PATCH 2/3] Initial support for char32_t

---
 hash/test/hash_number_test.cpp         |  6 ++++++
 include/boost/functional/hash/hash.hpp | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/hash/test/hash_number_test.cpp b/hash/test/hash_number_test.cpp
index ebfe4d4..18756c3 100644
--- a/hash/test/hash_number_test.cpp
+++ b/hash/test/hash_number_test.cpp
@@ -164,6 +164,12 @@ int main()
     NUMERIC_TEST(unsigned char, uchar)
 #ifndef BOOST_NO_INTRINSIC_WCHAR_T
     NUMERIC_TEST(wchar_t, wchar)
+#endif
+#ifndef BOOST_NO_CXX11_CHAR16_T
+    NUMERIC_TEST(char16_t, char16)
+#endif
+#ifndef BOOST_NO_CXX11_CHAR32_T
+    NUMERIC_TEST(char32_t, char32)
 #endif
     NUMERIC_TEST(short, short)
     NUMERIC_TEST(unsigned short, ushort)
diff --git a/include/boost/functional/hash/hash.hpp b/include/boost/functional/hash/hash.hpp
index 76c4897..0d25cc6 100644
--- a/include/boost/functional/hash/hash.hpp
+++ b/include/boost/functional/hash/hash.hpp
@@ -107,6 +107,16 @@ namespace boost
             boost::hash_detail::enable_hash_value {};
 #endif
 
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+        template <> struct basic_numbers<char16_t> :
+            boost::hash_detail::enable_hash_value {};
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+        template <> struct basic_numbers<char32_t> :
+            boost::hash_detail::enable_hash_value {};
+#endif
+
         // long_numbers is defined like this to allow for separate
         // specialization for long_long and int128_type, in case
         // they conflict.

From 767673645e14aac6020ad45cc88cc4716c242851 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Wed, 31 May 2017 22:19:54 +0100
Subject: [PATCH 3/3] Support for char16_t, char32_t, u16string, u32string

---
 hash/doc/changes.qbk                   |  4 ++
 hash/doc/ref.xml                       | 85 +++++++++++++++++++++++++-
 hash/test/hash_string_test.cpp         | 56 +++++++++++++++++
 include/boost/functional/hash/hash.hpp | 12 ++++
 4 files changed, 156 insertions(+), 1 deletion(-)

diff --git a/hash/doc/changes.qbk b/hash/doc/changes.qbk
index c458257..5ee6cb6 100644
--- a/hash/doc/changes.qbk
+++ b/hash/doc/changes.qbk
@@ -191,4 +191,8 @@
 * Fix for recent versions of Visual C++ which have removed `std::unary_function`
   and `std::binary_function` ([ticket 12353]).
 
+[h2 Boost 1.65.0]
+
+* Support for `char16_t`, `char32_t`, `u16string`, `u32string`
+
 [endsect]
diff --git a/hash/doc/ref.xml b/hash/doc/ref.xml
index 5fcd43b..f5fd185 100644
--- a/hash/doc/ref.xml
+++ b/hash/doc/ref.xml
@@ -162,6 +162,42 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
         </method>
       </struct-specialization>
 
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>char16_t</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>char16_t</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>char32_t</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>char32_t</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
       <struct-specialization name="hash">
         <template></template>
         <specialization>
@@ -396,6 +432,42 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
         </method>
       </struct-specialization>
 
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::u16string</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::u16string const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::u32string</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::u32string const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
       <struct-specialization name="hash">
         <template>
           <template-type-parameter name="T"/>
@@ -597,6 +669,16 @@ for(; first != last; ++first)
           <parameter name="val"><paramtype>wchar_t</paramtype></parameter>
         </signature>
 
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>char16_t</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>char32_t</paramtype></parameter>
+        </signature>
+
         <signature>
           <type>std::size_t</type>
           <parameter name="val"><paramtype>short</paramtype></parameter>
@@ -833,7 +915,8 @@ for(; first != last; ++first)
               <tbody>
                 <row>
                   <entry><code>bool</code>,
-                    <code>char</code>, <code>signed char</code>, <code>unsigned char</code>, <code>wchar_t</code>,
+                    <code>char</code>, <code>signed char</code>, <code>unsigned char</code>,
+                    <code>wchar_t</code>, <code>char16_t</code>, <code>char32_t</code>,
                     <code>short</code>, <code>unsigned short</code>,
                     <code>int</code>, <code>unsigned int</code>, <code>long</code>, <code>unsigned long</code>
                   </entry>
diff --git a/hash/test/hash_string_test.cpp b/hash/test/hash_string_test.cpp
index 3c83007..7088d67 100644
--- a/hash/test/hash_string_test.cpp
+++ b/hash/test/hash_string_test.cpp
@@ -80,12 +80,68 @@ void wstring_tests()
 }
 #endif
 
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+void u16string_tests()
+{
+    compile_time_tests((std::u16string*) 0);
+
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u16string> x1;
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u16string> x2;
+
+    BOOST_TEST(x1(u"Hello") == x2(std::u16string(u"Hel") + u"lo"));
+    BOOST_TEST(x1(u"") == x2(std::u16string()));
+
+#if defined(BOOST_HASH_TEST_EXTENSIONS)
+    std::u16string value1;
+    std::u16string value2(u"Hello");
+
+    BOOST_TEST(x1(value1) == BOOST_HASH_TEST_NAMESPACE::hash_value(value1));
+    BOOST_TEST(x1(value2) == BOOST_HASH_TEST_NAMESPACE::hash_value(value2));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value1) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value1.begin(), value1.end()));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value2) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value2.begin(), value2.end()));
+#endif
+}
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+void u32string_tests()
+{
+    compile_time_tests((std::u32string*) 0);
+
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u32string> x1;
+    BOOST_HASH_TEST_NAMESPACE::hash<std::u32string> x2;
+
+    BOOST_TEST(x1(U"Hello") == x2(std::u32string(U"Hel") + U"lo"));
+    BOOST_TEST(x1(U"") == x2(std::u32string()));
+
+#if defined(BOOST_HASH_TEST_EXTENSIONS)
+    std::u32string value1;
+    std::u32string value2(U"Hello");
+
+    BOOST_TEST(x1(value1) == BOOST_HASH_TEST_NAMESPACE::hash_value(value1));
+    BOOST_TEST(x1(value2) == BOOST_HASH_TEST_NAMESPACE::hash_value(value2));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value1) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value1.begin(), value1.end()));
+    BOOST_TEST(BOOST_HASH_TEST_NAMESPACE::hash_value(value2) ==
+            BOOST_HASH_TEST_NAMESPACE::hash_range(value2.begin(), value2.end()));
+#endif
+}
+#endif
+
 int main()
 {
     string_tests();
     string0_tests();
 #if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     wstring_tests();
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    u16string_tests();
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    u32string_tests();
 #endif
     return boost::report_errors();
 }
diff --git a/include/boost/functional/hash/hash.hpp b/include/boost/functional/hash/hash.hpp
index 0d25cc6..b461f5f 100644
--- a/include/boost/functional/hash/hash.hpp
+++ b/include/boost/functional/hash/hash.hpp
@@ -465,6 +465,12 @@ namespace boost
     BOOST_HASH_SPECIALIZE(unsigned char)
 #if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     BOOST_HASH_SPECIALIZE(wchar_t)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    BOOST_HASH_SPECIALIZE(char16_t)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    BOOST_HASH_SPECIALIZE(char32_t)
 #endif
     BOOST_HASH_SPECIALIZE(short)
     BOOST_HASH_SPECIALIZE(unsigned short)
@@ -481,6 +487,12 @@ namespace boost
 #if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
     BOOST_HASH_SPECIALIZE_REF(std::wstring)
 #endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T)
+    BOOST_HASH_SPECIALIZE_REF(std::basic_string<char16_t>)
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T)
+    BOOST_HASH_SPECIALIZE_REF(std::basic_string<char32_t>)
+#endif
 
 #if !defined(BOOST_NO_LONG_LONG)
     BOOST_HASH_SPECIALIZE(boost::long_long_type)