It meets Cpp17RandomAccessIterator requirements, but does not satisfy
random_access_iterator concept.

libstdc++-v3/ChangeLog:

        * testsuite/util/testsuite_iterators.h: Modify comment.
---
Giving oportunity to check for typos and grammar issues.
OK for trunk?

 libstdc++-v3/testsuite/util/testsuite_iterators.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/testsuite/util/testsuite_iterators.h 
b/libstdc++-v3/testsuite/util/testsuite_iterators.h
index caede49e41b..ca022e5d0f9 100644
--- a/libstdc++-v3/testsuite/util/testsuite_iterators.h
+++ b/libstdc++-v3/testsuite/util/testsuite_iterators.h
@@ -695,9 +695,12 @@ namespace __gnu_test
    * @brief random_access_iterator wrapper for pointer,
    * that returns proxy from subscript.
    *
-   * This class takes a pointer and wraps it to provide exactly
-   * the requirements of a random_access_iterator. It should not be
-   * instantiated directly, but generated from a test_container
+   * This is separate from random_access_iterator_wrapper (that returns
+   * T& from operator subscript), as it meets the requirements of
+   * Cpp17RandomAccessIterator (C++20 [tab:randomaccessiterator])
+   * that allows to return type that is convertible to reference,
+   * but does not satisfy random_access_iterator concept
+   * (C++20 [random_access_iterator]).
    */
   template<class T>
   struct proxy_random_access_iterator_wrapper
-- 
2.52.0

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