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/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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 <gtest/gtest.h>
#include <android-base/macros.h>
#include <bionic/mte.h>
__attribute__((no_sanitize("hwaddress")))
static void test_tag_mismatch() {
std::unique_ptr<int[]> p = std::make_unique<int[]>(4);
p[0] = 1;
int* mistagged_p ATTRIBUTE_UNUSED =
reinterpret_cast<int*>(reinterpret_cast<uintptr_t>(p.get()) + (1ULL << 56));
{
ScopedDisableMTE x;
{ ScopedDisableMTE y; }
#if defined(__aarch64__)
volatile int load ATTRIBUTE_UNUSED = *mistagged_p;
#endif
}
#if defined(__aarch64__)
if (mte_supported()) {
EXPECT_DEATH(
{
volatile int load ATTRIBUTE_UNUSED = *mistagged_p;
},
"");
}
#endif
}
TEST(mte_test, ScopedDisableMTE) {
test_tag_mismatch();
}
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