re PR libstdc++/58594 (std::make_shared does not accept const types as parameters)

	PR libstdc++/58594
	* include/bits/shared_ptr_base.h: Real fix for cv-qualified types.

From-SVN: r218698

libstdc++-v3/ChangeLog

+2014-12-13  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/58594
+	* include/bits/shared_ptr_base.h: Real fix for cv-qualified types.
+
 2014-12-12  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/64241

libstdc++-v3/include/bits/shared_ptr_base.h

@@ -1106,7 +1106,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       template<typename _Alloc>
         struct _Deleter
         {
-          void operator()(_Tp* __ptr)
+          void operator()(typename _Alloc::value_type* __ptr)
           {
 	    __allocated_ptr<_Alloc> __guard{ _M_alloc, __ptr };
 	    allocator_traits<_Alloc>::destroy(_M_alloc, __guard.get());
@@ -1123,14 +1123,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	    rebind_traits<typename std::remove_cv<_Tp>::type> __traits;
 	  _Deleter<typename __traits::allocator_type> __del = { __a };
 	  auto __guard = std::__allocate_guarded(__del._M_alloc);
-	  _M_ptr = __guard.get();
+	  auto __ptr = __guard.get();
 	  // _GLIBCXX_RESOLVE_LIB_DEFECTS
 	  // 2070. allocate_shared should use allocator_traits<A>::construct
-	  __traits::construct(__del._M_alloc, _M_ptr,
+	  __traits::construct(__del._M_alloc, __ptr,
 			      std::forward<_Args>(__args)...);
 	  __guard = nullptr;
-	  __shared_count<_Lp> __count(_M_ptr, __del, __del._M_alloc);
+	  __shared_count<_Lp> __count(__ptr, __del, __del._M_alloc);
 	  _M_refcount._M_swap(__count);
+	  _M_ptr = __ptr;
 	  __enable_shared_from_this_helper(_M_refcount, _M_ptr, _M_ptr);
 	}
 #endif