crashpad/util/misc/initialization_state_test.cc
Mark Mentovai 6278690abe Update copyright boilerplate, 2022 edition (Crashpad)
sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$')

Bug: chromium:1098010
Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-09-06 23:54:07 +00:00

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// Copyright 2014 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/misc/initialization_state.h"
#include <stdlib.h>
#include <memory>
#include "base/memory/free_deleter.h"
#include "gtest/gtest.h"
namespace crashpad {
namespace test {
namespace {
TEST(InitializationState, InitializationState) {
// Use placement new so that the buffer used to host the object remains live
// even after the object is destroyed.
std::unique_ptr<InitializationState, base::FreeDeleter>
initialization_state_buffer(
static_cast<InitializationState*>(malloc(sizeof(InitializationState))));
InitializationState* initialization_state =
new (initialization_state_buffer.get()) InitializationState();
EXPECT_TRUE(initialization_state->is_uninitialized());
EXPECT_FALSE(initialization_state->is_valid());
initialization_state->set_invalid();
EXPECT_FALSE(initialization_state->is_uninitialized());
EXPECT_FALSE(initialization_state->is_valid());
initialization_state->set_valid();
EXPECT_FALSE(initialization_state->is_uninitialized());
EXPECT_TRUE(initialization_state->is_valid());
initialization_state->~InitializationState();
// initialization_state points to something that no longer exists. This
// portion of the test is intended to check that after an InitializationState
// object is destroyed, it will not be considered valid on a use-after-free,
// assuming that nothing else was written to its former home in memory.
//
// Because initialization_state was constructed via placement new into a
// buffer thats still valid and its destructor was called directly, this
// approximates use-after-free without risking that the memory formerly used
// for the InitializationState object has been repurposed.
EXPECT_FALSE(initialization_state->is_uninitialized());
EXPECT_FALSE(initialization_state->is_valid());
}
} // namespace
} // namespace test
} // namespace crashpad