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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/sanitizer.h"
#include <stdint.h>
#include "rtc_base/logging.h"
#include "test/gtest.h"
#if RTC_HAS_MSAN
#include <sanitizer/msan_interface.h>
#endif
namespace webrtc {
namespace {
// Test sanitizer_impl::IsTriviallyCopyable (at compile time).
// Trivially copyable.
struct TrTrTr {
TrTrTr(const TrTrTr&) = default;
TrTrTr& operator=(const TrTrTr&) = default;
~TrTrTr() = default;
};
static_assert(sanitizer_impl::IsTriviallyCopyable<TrTrTr>(), "");
struct TrDeTr {
TrDeTr(const TrDeTr&) = default;
TrDeTr& operator=(const TrDeTr&) = delete;
~TrDeTr() = default;
};
static_assert(sanitizer_impl::IsTriviallyCopyable<TrDeTr>(), "");
// Non trivially copyable.
struct TrTrNt {
TrTrNt(const TrTrNt&) = default;
TrTrNt& operator=(const TrTrNt&) = default;
~TrTrNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<TrTrNt>(), "");
struct TrNtTr {
TrNtTr(const TrNtTr&) = default;
TrNtTr& operator=(const TrNtTr&);
~TrNtTr() = default;
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<TrNtTr>(), "");
struct TrNtNt {
TrNtNt(const TrNtNt&) = default;
TrNtNt& operator=(const TrNtNt&);
~TrNtNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<TrNtNt>(), "");
struct TrDeNt {
TrDeNt(const TrDeNt&) = default;
TrDeNt& operator=(const TrDeNt&) = delete;
~TrDeNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<TrDeNt>(), "");
struct NtTrTr {
NtTrTr(const NtTrTr&);
NtTrTr& operator=(const NtTrTr&) = default;
~NtTrTr() = default;
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtTrTr>(), "");
struct NtTrNt {
NtTrNt(const NtTrNt&);
NtTrNt& operator=(const NtTrNt&) = default;
~NtTrNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtTrNt>(), "");
struct NtNtTr {
NtNtTr(const NtNtTr&);
NtNtTr& operator=(const NtNtTr&);
~NtNtTr() = default;
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtNtTr>(), "");
struct NtNtNt {
NtNtNt(const NtNtNt&);
NtNtNt& operator=(const NtNtNt&);
~NtNtNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtNtNt>(), "");
struct NtDeTr {
NtDeTr(const NtDeTr&);
NtDeTr& operator=(const NtDeTr&) = delete;
~NtDeTr() = default;
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtDeTr>(), "");
struct NtDeNt {
NtDeNt(const NtDeNt&);
NtDeNt& operator=(const NtDeNt&) = delete;
~NtDeNt();
};
static_assert(!sanitizer_impl::IsTriviallyCopyable<NtDeNt>(), "");
// Trivially copyable types.
struct Foo {
uint32_t field1;
uint16_t field2;
};
struct Bar {
uint32_t ID;
Foo foo;
};
// Run the callback, and expect a crash if it *doesn't* make an uninitialized
// memory read. If MSan isn't on, just run the callback.
template <typename F>
void MsanExpectUninitializedRead(F&& f) {
#if RTC_HAS_MSAN
EXPECT_DEATH(f(), "");
#else
f();
#endif
}
} // namespace
TEST(SanitizerTest, MsanUninitialized) {
Bar bar = MsanUninitialized<Bar>({});
// Check that a read after initialization is OK.
bar.ID = 1;
EXPECT_EQ(1u, bar.ID);
RTC_LOG(LS_INFO) << "read after init passed";
// Check that other fields are uninitialized and equal to zero.
MsanExpectUninitializedRead([&] { EXPECT_EQ(0u, bar.foo.field1); });
MsanExpectUninitializedRead([&] { EXPECT_EQ(0u, bar.foo.field2); });
RTC_LOG(LS_INFO) << "read with no init passed";
}
} // namespace webrtc
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