chromium/base/allocator/partition_allocator/src/partition_alloc/slot_start_unittest.cc

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "partition_alloc/partition_alloc_for_testing.h"
#include "partition_alloc/partition_page.h"
#include "partition_alloc/use_death_tests.h"
#include "testing/gtest/include/gtest/gtest.h"

// These tests are default-disabled when PA passes through to a
// sanitizer, in which case the values returned from `Alloc()` are not
// managed by PartitionAlloc.
#if !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)

namespace partition_alloc::internal {
namespace {

constexpr PartitionOptions kOptions{ … };

class SlotStartTest : public testing::Test { … };

TEST_F(SlotStartTest, SlotStartDoesntCrash) { … }

#if PA_USE_DEATH_TESTS()
TEST_F(SlotStartTest, SlotStartCrashes) { … }

// In general, a `SlotStart` should not be constructed from a freed
// pointer, but this is only _really_ crashy when the freed pointer
// points to a direct map, which is decommitted immediately in
// `PartitionDirectUnmap()`. Normal buckets may or may not be subject
// to the same restriction, depending on the presence of the
// `MemoryReclaimer`.
TEST_F(SlotStartTest, SlotStartCrashesOnFreedDirectMap) { … }
#endif  // PA_USE_DEATH_TESTS()

}  // namespace
}  // namespace partition_alloc::internal

#endif  // !defined(MEMORY_TOOL_REPLACES_ALLOCATOR)