[Bug libstdc++/101571] DestroyGuard used by the ranges::uninitialized family should use addressof()

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101571

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
We should also do this:

--- a/libstdc++-v3/testsuite/util/testsuite_iterators.h
+++ b/libstdc++-v3/testsuite/util/testsuite_iterators.h
@@ -175,10 +175,14 @@ namespace __gnu_test
 #if __cplusplus >= 201103L
     template<typename U>
       void operator,(const U&) const = delete;
+
+    void operator&() const = delete;
 #else
   private:
     template<typename U>
       void operator,(const U&) const;
+
+    void operator&() const;
 #endif
   };

@@ -288,10 +292,14 @@ namespace __gnu_test
 #if __cplusplus >= 201103L
     template<typename U>
       void operator,(const U&) const = delete;
+
+    void operator&() const = delete;
 #else
   private:
     template<typename U>
       void operator,(const U&) const;
+
+    void operator&() const;
 #endif
   };