[gcc r11-7802] libstdc++: Improve test for views::reverse

[Jonathan Wakely]

https://gcc.gnu.org/g:d1aa5f57db7c14a62e9b7e2a2aa8a9c402a89363

commit r11-7802-gd1aa5f57db7c14a62e9b7e2a2aa8a9c402a89363
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Mar 23 18:22:18 2021 +0000

    libstdc++: Improve test for views::reverse
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
            line with a check that uses the const being/end overloads.

Diff:
---
 libstdc++-v3/testsuite/std/ranges/adaptors/reverse.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/testsuite/std/ranges/adaptors/reverse.cc b/libstdc++-v3/testsuite/std/ranges/adaptors/reverse.cc
index 47386575192..0d52498e207 100644
--- a/libstdc++-v3/testsuite/std/ranges/adaptors/reverse.cc
+++ b/libstdc++-v3/testsuite/std/ranges/adaptors/reverse.cc
@@ -141,11 +141,12 @@ namespace test_ns
 void test06()
 {
   // Check that views::reverse works and does not use ADL which could lead
-  // to accidentally finding test_ns::make_reverse_iterator(const A&).
+  // to accidentally finding test_ns::make_reverse_iterator(A*).
   test_ns::A as[] = {{}, {}};
   auto v = as | std::views::reverse;
-  static_assert(std::ranges::view<decltype(v)>);
-  static_assert(std::ranges::view<decltype(v)>);
+  using V = decltype(v);
+  static_assert( std::ranges::view<V> );
+  static_assert( std::ranges::range<const V> );
 }
 
 int