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test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_rand.pass.cpp (Affects 64-bit architectures.) Include <cstddef> so we can take/return std::ptrdiff_t (instead of int) in random_shuffle()'s RNG. (C++14 D.12 [depr.alg.random.shuffle]/2 says that difference_type is used, and we're shuffling a plain array.) test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort.pass.cpp (Affects 64-bit architectures.) Include <iterator> because we're already using iterator_traits. Then, store the result of subtracting two RanIts as difference_type instead of long (which truncates on LLP64 architectures like MSVC x64). test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_flist.pass.cpp test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_one.pass.cpp (Affects 64-bit architectures.) Include <cstddef> so we can store the result of subtracting two pointers as std::ptrdiff_t (instead of int). test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp (Affects 32-bit architectures.) Sometimes, size_t is too small. That's the case here, where tellg() returns pos_type (N4606 27.7.2.3 [istream.unformatted]/39). Implementations can have 64-bit pos_type (to handle large files) even when they have 32-bit size_t. Fixes D27543. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@289110 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <algorithm>
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// template<RandomAccessIterator Iter, Callable<auto, Iter::difference_type> Rand>
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// requires ShuffleIterator<Iter>
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// && Convertible<Rand::result_type, Iter::difference_type>
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// void
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// random_shuffle(Iter first, Iter last, Rand&& rand);
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#include <algorithm>
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#include <cassert>
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#include <cstddef>
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#include "test_macros.h"
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struct gen
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{
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std::ptrdiff_t operator()(std::ptrdiff_t n)
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{
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return n-1;
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}
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};
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int main()
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{
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int ia[] = {1, 2, 3, 4};
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int ia1[] = {4, 1, 2, 3};
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const unsigned sa = sizeof(ia)/sizeof(ia[0]);
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gen r;
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std::random_shuffle(ia, ia+sa, r);
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LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
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assert(std::is_permutation(ia, ia+sa, ia1));
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}
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