PR77987 Fix unique_ptr<T[], D>::reset(U) for T != U

commit 721248b4e099769f0c78d72bf951e7b2d7b8f95a
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Oct 19 11:05:26 2016 +0100

    Move negative unique_ptr tests to new file
    
    	* testsuite/20_util/unique_ptr/cons/cv_qual.cc: Move negative tests
    	to new file.
    	* testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc: New file.  Fix
    	test for incompatible deleters to not also use incompatible types.
    	Add tests for incompatible array types.

diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual.cc
index 829d112..8d6847b 100644
--- a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual.cc
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual.cc
@@ -99,30 +99,4 @@  test07()
   std::unique_ptr<const A[]> cA2((A*)p);
   std::unique_ptr<volatile A[]> vA2((A*)p);
   std::unique_ptr<const volatile A[]> cvA2((A*)p);
-  // Disallow conversions from user-defined pointer-like types
-  // for the array version
-  std::unique_ptr<A[]> upA3(p); // { dg-error "no matching function" }
-  std::unique_ptr<const A[]> cA3(p); // { dg-error "no matching function" }
-  std::unique_ptr<volatile A[]> vA3(p); // { dg-error "no matching function" }
-  std::unique_ptr<const volatile A[]> cvA3(p); // { dg-error "no matching function" }
-  // { dg-error "no type" "" { target *-*-* } 446 }
 }
-
-template<typename T>
-struct deleter
-{
-  deleter() = default;
-  template<typename U>
-    deleter(const deleter<U>) { }
-  typedef T pointer;
-  void operator()(T) const { }
-};
-
-void
-test08()
-{
-  // Disallow conversions from non-assignable deleter
-  std::unique_ptr<B[], deleter<A_pointer>> p;
-  std::unique_ptr<A[], deleter<A*>> upA(std::move(p)); // { dg-error "no matching function" }
-}
-
diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc
new file mode 100644
index 0000000..d744c1b
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc
@@ -0,0 +1,72 @@ 
+// { dg-do compile { target c++11 } }
+
+// Copyright (C) 2016 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 20.7.1 Class template unique_ptr [unique.ptr]
+
+#include <memory>
+
+struct A { virtual ~A() = default; };
+
+struct B : A { };
+
+// Construction from objects with different cv-qualification
+
+struct A_pointer { operator A*() const { return nullptr; } };
+
+void
+test07()
+{
+  A_pointer p;
+  // Disallow conversions from user-defined pointer-like types
+  // for the array version
+  std::unique_ptr<A[]> upA3(p); // { dg-error "no matching function" }
+  std::unique_ptr<const A[]> cA3(p); // { dg-error "no matching function" }
+  std::unique_ptr<volatile A[]> vA3(p); // { dg-error "no matching function" }
+  std::unique_ptr<const volatile A[]> cvA3(p); // { dg-error "no matching function" }
+  // { dg-error "no type" "" { target *-*-* } 446 }
+}
+
+template<typename T>
+struct deleter
+{
+  deleter() = default;
+  template<typename U>
+    deleter(const deleter<U>) { }
+  typedef T pointer;
+  void operator()(T) const { }
+};
+
+void
+test08()
+{
+  // Disallow conversions from non-assignable deleter
+  std::unique_ptr<A[], deleter<A_pointer>> p;
+  std::unique_ptr<A[], deleter<A*>> upA(std::move(p)); // { dg-error "no matching function" }
+}
+
+void
+test011()
+{
+  // Disallow conversions between different array types.
+  std::unique_ptr<B[]> upB;
+
+  std::unique_ptr<const A[]> cA(std::move(upB));  // { dg-error "no matching function" }
+  std::unique_ptr<volatile A[]> vA(std::move(upB)); // { dg-error "no matching function" }
+  std::unique_ptr<const volatile A[]> cvA(std::move(upB)); // { dg-error "no matching function" }
+}