f73050e722
This patch hardens the "test iterators" we use to test algorithms by ensuring that they don't get double-moved. As a result of this hardening, the tests started reporting multiple failures where we would double-move iterators, which are being fixed in this patch. In particular: - Fixed a double-move in pstl.partition - Add coverage for begin()/end() in subrange tests - Fix tests for ranges::ends_with and ranges::contains, which were incorrectly calling begin() twice on the same subrange containing non-copyable input iterators. Fixes #100709
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef TEST_SUPPORT_DOUBLE_MOVE_TRACKER_H
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#define TEST_SUPPORT_DOUBLE_MOVE_TRACKER_H
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#include <cassert>
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#include "test_macros.h"
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namespace support {
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struct double_move_tracker {
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TEST_CONSTEXPR double_move_tracker() : moved_from_(false) {}
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double_move_tracker(double_move_tracker const&) = default;
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TEST_CONSTEXPR_CXX14 double_move_tracker(double_move_tracker&& other) : moved_from_(false) {
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assert(!other.moved_from_);
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other.moved_from_ = true;
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}
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double_move_tracker& operator=(double_move_tracker const&) = default;
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TEST_CONSTEXPR_CXX14 double_move_tracker& operator=(double_move_tracker&& other) {
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assert(!other.moved_from_);
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other.moved_from_ = true;
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moved_from_ = false;
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return *this;
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}
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private:
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bool moved_from_;
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};
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} // namespace support
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#endif // TEST_SUPPORT_DOUBLE_MOVE_TRACKER_H
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