libstdc++: Rename disable_sized_sentinel [P1871R1]

	* include/bits/iterator_concepts.h (disable_sized_sentinel): Rename to
	disable_sized_sentinel_for.
	* testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust.

From-SVN: r278255

libstdc++-v3/ChangeLog

+2019-11-14  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/iterator_concepts.h (disable_sized_sentinel): Rename to
+	disable_sized_sentinel_for.
+	* testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust.
+
 2019-11-13  Jonathan Wakely  <jwakely@redhat.com>
 
 	* libsupc++/compare (strong_order, weak_order, partial_order)

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

@@ -524,11 +524,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       && __detail::__weakly_eq_cmp_with<_Sent, _Iter>;
 
   template<typename _Sent, typename _Iter>
-    inline constexpr bool disable_sized_sentinel = false;
+    inline constexpr bool disable_sized_sentinel_for = false;
 
   template<typename _Sent, typename _Iter>
     concept sized_sentinel_for = sentinel_for<_Sent, _Iter>
-    && !disable_sized_sentinel<remove_cv_t<_Sent>, remove_cv_t<_Iter>>
+    && !disable_sized_sentinel_for<remove_cv_t<_Sent>, remove_cv_t<_Iter>>
     && requires(const _Iter& __i, const _Sent& __s)
     {
       { __s - __i } -> same_as<iter_difference_t<_Iter>>;

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

@@ -449,9 +449,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #  if __cplusplus > 201703L && defined __cpp_lib_concepts
   template<typename _Iterator1, typename _Iterator2>
     requires (!sized_sentinel_for<_Iterator1, _Iterator2>)
-    inline constexpr bool disable_sized_sentinel<reverse_iterator<_Iterator1>,
-						 reverse_iterator<_Iterator2>>
-						   = true;
+    inline constexpr bool
+    disable_sized_sentinel_for<reverse_iterator<_Iterator1>,
+			       reverse_iterator<_Iterator2>> = true;
 #  endif // C++20
 # endif // C++14
 

libstdc++-v3/testsuite/24_iterators/headers/iterator/synopsis_c++20.cc

@@ -79,7 +79,7 @@ namespace std
 }
 
 struct I { };
-template<> constexpr bool std::disable_sized_sentinel<I, I> = true;
+template<> constexpr bool std::disable_sized_sentinel_for<I, I> = true;
 
 namespace __gnu_test
 {
@@ -87,8 +87,8 @@ namespace __gnu_test
   constexpr auto* iter_move = &std::ranges::iter_move;
   constexpr auto* iter_swap = &std::ranges::iter_swap;
   // sized sentinels
-  constexpr bool const* disable_sized_sentinel
-    = &std::disable_sized_sentinel<void, void>;
+  constexpr bool const* disable_sized_sentinel_for
+    = &std::disable_sized_sentinel_for<void, void>;
   // default sentinels
   constexpr std::default_sentinel_t const* default_sentinel
     = &std::default_sentinel;