Make vector::data() return type consistent in C++98

	* include/bits/stl_vector.h (vector::_M_data_ptr, vector::data):
	Change return type of non-standard C++98 extension to match C++11.

From-SVN: r241475

libstdc++-v3/ChangeLog

+2016-10-24  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/stl_vector.h (vector::_M_data_ptr, vector::data):
+	Change return type of non-standard C++98 extension to match C++11.
+
 2016-10-22  François Dumont  <fdumont@gcc.gnu.org>
 
 	* include/bits/c++config (_GLIBCXX_BEGIN_NAMESPACE_ALGO)

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

@@ -914,19 +914,11 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
        *   Returns a pointer such that [data(), data() + size()) is a valid
        *   range.  For a non-empty %vector, data() == &front().
        */
-#if __cplusplus >= 201103L
       _Tp*
-#else
-      pointer
-#endif
       data() _GLIBCXX_NOEXCEPT
       { return _M_data_ptr(this->_M_impl._M_start); }
 
-#if __cplusplus >= 201103L
       const _Tp*
-#else
-      const_pointer
-#endif
       data() const _GLIBCXX_NOEXCEPT
       { return _M_data_ptr(this->_M_impl._M_start); }
 
@@ -1558,21 +1550,31 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
       }
 #endif
 
-#if __cplusplus >= 201103L
       template<typename _Up>
 	_Up*
-	_M_data_ptr(_Up* __ptr) const
+	_M_data_ptr(_Up* __ptr) const _GLIBCXX_NOEXCEPT
 	{ return __ptr; }
 
+#if __cplusplus >= 201103L
       template<typename _Ptr>
 	typename std::pointer_traits<_Ptr>::element_type*
 	_M_data_ptr(_Ptr __ptr) const
 	{ return empty() ? nullptr : std::__addressof(*__ptr); }
 #else
+      template<typename _Up>
+	_Up*
+	_M_data_ptr(_Up* __ptr) _GLIBCXX_NOEXCEPT
+	{ return __ptr; }
+
+      template<typename _Ptr>
+	value_type*
+	_M_data_ptr(_Ptr __ptr)
+	{ return __ptr.operator->(); }
+
       template<typename _Ptr>
-	_Ptr
+	const value_type*
 	_M_data_ptr(_Ptr __ptr) const
-	{ return __ptr; }
+	{ return __ptr.operator->(); }
 #endif
     };