Implement LWG#2385; remove the allocator-aware std::function::assign call. It was useless, and didn't actually *do anything* with the allocator. Now it's gone. On the off chance that someone is mistakenly calling it, it's only gone in C++1z

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@258697 91177308-0d34-0410-b5e6-96231b3b80d8

include/functional

@@ -407,7 +407,7 @@ public:
     // function modifiers:
     void swap(function&) noexcept;
     template<class F, class Alloc>
-      void assign(F&&, const Alloc&);
+      void assign(F&&, const Alloc&);                 // Removed in C++17
 
     // function capacity:
     explicit operator bool() const noexcept;
@@ -1626,10 +1626,13 @@ public:
 
     // function modifiers:
     void swap(function&) _NOEXCEPT;
+
+#if _LIBCPP_STD_VER <= 14
     template<class _Fp, class _Alloc>
       _LIBCPP_INLINE_VISIBILITY
       void assign(_Fp&& __f, const _Alloc& __a)
         {function(allocator_arg, __a, _VSTD::forward<_Fp>(__f)).swap(*this);}
+#endif
 
     // function capacity:
     _LIBCPP_INLINE_VISIBILITY

test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/assign_F_alloc.pass.cpp

@@ -12,10 +12,12 @@
 // class function<R(ArgTypes...)>
 
 // template<class F, class A> void assign(F&&, const A&);
+//     This call was removed post-C++14
 
 #include <functional>
 #include <cassert>
 
+#include "test_macros.h"
 #include "test_allocator.h"
 
 class A
@@ -49,6 +51,7 @@ int A::count = 0;
 
 int main()
 {
+#if TEST_STD_VER <= 14
     {
     std::function<int(int)> f;
     f.assign(A(), test_allocator<A>());
@@ -57,4 +60,5 @@ int main()
     assert(f.target<int(*)(int)>() == 0);
     }
     assert(A::count == 0);
+#endif
 }

www/cxx1z_status.html

@@ -168,7 +168,7 @@
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2367">2367</a></td><td><tt>pair</tt> and <tt>tuple</tt> are not correctly implemented for <tt>is_constructible</tt> with no args</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2380">2380</a></td><td>May <tt>&lt;cstdlib&gt;</tt> provide <tt>long ::abs(long)</tt> and <tt>long long ::abs(long long)</tt>?</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2384">2384</a></td><td>Allocator's <tt>deallocate</tt> function needs better specification</td><td>Kona</td><td>Complete</td></tr>
-	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2385">2385</a></td><td><tt>function::assign</tt> allocator argument doesn't make sense</td><td>Kona</td><td></td></tr>
+	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2385">2385</a></td><td><tt>function::assign</tt> allocator argument doesn't make sense</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2435">2435</a></td><td><tt>reference_wrapper::operator()</tt>'s Remark should be deleted</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2447">2447</a></td><td>Allocators and <tt>volatile</tt>-qualified value types</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2462">2462</a></td><td><tt>std::ios_base::failure</tt> is overspecified</td><td>Kona</td><td>Complete</td></tr>
@@ -179,7 +179,7 @@
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2477">2477</a></td><td>Inconsistency of wordings in <tt>std::vector::erase()</tt> and <tt>std::deque::erase()</tt></td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2483">2483</a></td><td><tt>throw_with_nested()</tt> should use <tt>is_final</tt></td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2484">2484</a></td><td><tt>rethrow_if_nested()</tt> is doubly unimplementable</td><td>Kona</td><td>Complete</td></tr>
-	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2485">2485</a></td><td><tt>get()</tt> should be overloaded for <tt>const tuple&amp;&amp;</tt></td><td>Kona</td><td>Completed</td></tr>
+	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2485">2485</a></td><td><tt>get()</tt> should be overloaded for <tt>const tuple&amp;&amp;</tt></td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2486">2486</a></td><td><tt>mem_fn()</tt> should be required to use perfect forwarding</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2487">2487</a></td><td><tt>bind()</tt> should be <tt>const</tt>-overloaded, not <i>cv</i>-overloaded</td><td>Kona</td><td>Complete</td></tr>
 	<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2489">2489</a></td><td><tt>mem_fn()</tt> should be <tt>noexcept</tt></td><td>Kona</td><td>Complete</td></tr>
@@ -192,7 +192,7 @@
 <!-- 	<tr><td></td><td></td><td></td><td></td></tr> -->
   </table>
 
-  <p>Last Updated: 21-Jan-2016</p>
+  <p>Last Updated: 25-Jan-2016</p>
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