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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/20_util/owner_less
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Diffstat (limited to 'libstdc++-v3/testsuite/20_util/owner_less')
-rw-r--r--libstdc++-v3/testsuite/20_util/owner_less/cmp.cc135
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diff --git a/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc b/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc
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+++ b/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc
@@ -0,0 +1,135 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
+
+#include <memory>
+#include <algorithm>
+#include <testsuite_hooks.h>
+
+struct A { };
+
+struct B { A a[2]; };
+
+// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
+
+int
+test01()
+{
+ bool test __attribute__((unused)) = true;
+
+ // test empty shared_ptrs compare equivalent
+ std::owner_less<std::shared_ptr<A>> less;
+ std::owner_less<std::weak_ptr<A>> wless;
+ std::shared_ptr<A> p1;
+ std::shared_ptr<A> p2;
+ VERIFY( !less(p1, p2) && !less(p2, p1) );
+ std::weak_ptr<A> p3;
+ VERIFY( !less(p1, p3) && !less(p3, p1) );
+ VERIFY( !wless(p1, p3) && !wless(p3, p1) );
+ return 0;
+}
+
+
+// Construction from pointer
+int
+test02()
+{
+ bool test __attribute__((unused)) = true;
+
+ std::owner_less<std::shared_ptr<A>> less;
+ std::owner_less<std::weak_ptr<A>> wless;
+
+ std::shared_ptr<A> empty;
+
+ std::shared_ptr<A> a1(new A);
+ VERIFY( less(empty, a1) || less(a1, empty) );
+
+ std::shared_ptr<A> a2(new A);
+ VERIFY( less(a1, a2) || less(a2, a1) );
+
+ std::weak_ptr<A> w1(a1);
+ VERIFY( !less(a1, w1) && !less(w1, a1) );
+
+ std::weak_ptr<A> w2(a2);
+ VERIFY( wless(w1, w2) || wless(w2, w1) );
+
+ a1.reset();
+ VERIFY( !less(empty, a1) && !less(a1, empty) );
+ VERIFY( less(a1, w1) || less(w1, a1) );
+
+ a2.reset();
+ VERIFY( !less(a2, a1) && !less(a1, a2) );
+
+ return 0;
+}
+
+// aliasing
+int
+test03()
+{
+ bool test __attribute__((unused)) = true;
+
+ std::owner_less<std::shared_ptr<A>> less;
+ std::owner_less<std::weak_ptr<A>> wless;
+
+ std::shared_ptr<B> b(new B);
+ std::shared_ptr<A> a0(b, &b->a[0]);
+ std::shared_ptr<A> a1(b, &b->a[1]);
+ // values are different but owners are equivalent:
+ VERIFY( a0 < a1 && !less(a0, a1) && !less(a1, a0) );
+
+ std::weak_ptr<A> w0(a0);
+ std::weak_ptr<A> w1(a1);
+ VERIFY( !wless(w0, w1) && !wless(w1, w0) );
+ VERIFY( !less(a0, w1) && !less(w1, a0) );
+ VERIFY( !wless(w0, a1) && !wless(a1, w0) );
+
+ return 0;
+}
+
+// strict weak ordering
+int
+test04()
+{
+ bool test __attribute__((unused)) = true;
+
+ std::owner_less<std::shared_ptr<A>> less;
+
+ std::shared_ptr<A> a[3];
+ a[0].reset(new A);
+ a[1].reset(new A);
+ a[2].reset(new A);
+ std::sort(a, a+3, less);
+ VERIFY( !less(a[0], a[0]) );
+ VERIFY( less(a[0], a[1]) && !less(a[1], a[0]) );
+ VERIFY( less(a[0], a[1]) && less(a[1], a[2]) && less(a[0], a[2]) );
+
+ return 0;
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ test04();
+ return 0;
+}