Revert accidental check-in.  These changes are probably good, but premature at this point.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@174625 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/string b/include/string
index c99eaea..1a70467 100644
--- a/include/string
+++ b/include/string
@@ -2067,13 +2067,10 @@
     pointer __p = __alloc_traits::allocate(__alloc(), __cap+1);
     __invalidate_all_iterators();
     if (__n_copy != 0)
-        traits_type::copy(_VSTD::__to_raw_pointer(__p),
-                          _VSTD::__to_raw_pointer(__old_p), __n_copy);
+        traits_type::copy(__p, __old_p, __n_copy);
     size_type __sec_cp_sz = __old_sz - __n_del - __n_copy;
     if (__sec_cp_sz != 0)
-        traits_type::copy(_VSTD::__to_raw_pointer(__p + __n_copy + __n_add),
-                          _VSTD::__to_raw_pointer(__old_p + __n_copy + __n_del),
-                          __sec_cp_sz);
+        traits_type::copy(__p + __n_copy + __n_add, __old_p + __n_copy + __n_del, __sec_cp_sz);
     if (__old_cap+1 != __min_cap)
         __alloc_traits::deallocate(__alloc(), __old_p, __old_cap+1);
     __set_long_pointer(__p);
@@ -2306,7 +2303,7 @@
         if (__cap - __sz < __n)
             __grow_by(__cap, __sz + __n - __cap, __sz, __sz, 0);
         pointer __p = __get_pointer();
-        traits_type::assign(_VSTD::__to_raw_pointer(__p + __sz), __n, __c);
+        traits_type::assign(__p + __sz, __n, __c);
         __sz += __n;
         __set_size(__sz);
         traits_type::assign(__p[__sz], value_type());