-// Copyright (C) 2001, 2009, 2012 Free Software Foundation, Inc.
+// Copyright (C) 2001-2020 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
#include <algorithm>
#include <functional>
+#include <testsuite_new_operators.h>
#include <testsuite_hooks.h>
-
-bool test __attribute__((unused)) = true;
+#include <testsuite_iterators.h>
const int A[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17};
const int B[] = {2, 4, 6, 8, 10, 12, 14, 16, 1, 3, 5, 7, 9, 11, 13, 15, 17};
const int N = sizeof(A) / sizeof(int);
+// Index of the middle element that should be returned by the algo.
+const int M = 8;
+
struct Pred
{
bool
// 25.2.12 stable_partition()
void
-test02()
+test01()
{
- using std::stable_partition;
+ using std::stable_partition;
+ using __gnu_test::test_container;
+ using __gnu_test::forward_iterator_wrapper;
- int s1[N];
- std::copy(A, A + N, s1);
+ int s1[N];
+ std::copy(A, A + N, s1);
- stable_partition(s1, s1 + N, Pred());
- VERIFY(std::equal(s1, s1 + N, B));
+ test_container<int, forward_iterator_wrapper> c(s1, s1+N);
+ forward_iterator_wrapper<int> expected = c.begin();
+ std::advance(expected, M);
+ VERIFY( stable_partition(c.begin(), c.end(), Pred()) == expected);
+ VERIFY( std::equal(s1, s1 + N, B) );
}
int
main()
{
- test02();
+ test01();
+
+ // stable_partition rely on an internal buffer if possible. Try to limit the
+ // size of this buffer to see if algo is robust.
+
+ // Limit to half of the necessary buffer.
+ __gnu_test::set_new_limit(sizeof(A) / 2);
+ test01();
+
+ // Limit to just 1 element.
+ __gnu_test::set_new_limit(sizeof(int));
+ test01();
+
+ // Limit to 0
+ __gnu_test::set_new_limit(0);
+ test01();
+
return 0;
}