diff options
| -rw-r--r-- | contrib/epee/src/byte_slice.cpp | 26 | ||||
| -rw-r--r-- | tests/unit_tests/epee_utils.cpp | 31 |
2 files changed, 48 insertions, 9 deletions
diff --git a/contrib/epee/src/byte_slice.cpp b/contrib/epee/src/byte_slice.cpp index 99c37fae3..12cc83e6c 100644 --- a/contrib/epee/src/byte_slice.cpp +++ b/contrib/epee/src/byte_slice.cpp @@ -173,9 +173,14 @@ namespace epee byte_slice::byte_slice(byte_stream&& stream) noexcept : storage_(nullptr), portion_(stream.data(), stream.size()) { - std::uint8_t* const data = stream.take_buffer().release() - sizeof(raw_byte_slice); - new (data) raw_byte_slice{}; - storage_.reset(reinterpret_cast<raw_byte_slice*>(data)); + if (stream.size()) + { + std::uint8_t* const data = stream.take_buffer().release() - sizeof(raw_byte_slice); + new (data) raw_byte_slice{}; + storage_.reset(reinterpret_cast<raw_byte_slice*>(data)); + } + else + portion_ = nullptr; } byte_slice::byte_slice(byte_slice&& source) noexcept @@ -205,14 +210,17 @@ namespace epee byte_slice byte_slice::take_slice(const std::size_t max_bytes) noexcept { byte_slice out{}; - std::uint8_t const* const ptr = data(); - out.portion_ = {ptr, portion_.remove_prefix(max_bytes)}; - if (portion_.empty()) - out.storage_ = std::move(storage_); // no atomic inc/dec - else - out = {storage_.get(), out.portion_}; + if (max_bytes) + { + std::uint8_t const* const ptr = data(); + out.portion_ = {ptr, portion_.remove_prefix(max_bytes)}; + if (portion_.empty()) + out.storage_ = std::move(storage_); // no atomic inc/dec + else + out = {storage_.get(), out.portion_}; + } return out; } diff --git a/tests/unit_tests/epee_utils.cpp b/tests/unit_tests/epee_utils.cpp index 2e93f9e67..a2cec965e 100644 --- a/tests/unit_tests/epee_utils.cpp +++ b/tests/unit_tests/epee_utils.cpp @@ -667,6 +667,23 @@ TEST(ByteSlice, TakeSlice) EXPECT_TRUE(boost::range::equal(base_string, slice)); const epee::span<const std::uint8_t> original = epee::to_span(slice); + const epee::byte_slice empty_slice = slice.take_slice(0); + EXPECT_EQ(original.begin(), slice.begin()); + EXPECT_EQ(slice.begin(), slice.cbegin()); + EXPECT_EQ(original.end(), slice.end()); + EXPECT_EQ(slice.end(), slice.cend()); + + EXPECT_EQ(nullptr, empty_slice.begin()); + EXPECT_EQ(nullptr, empty_slice.cbegin()); + EXPECT_EQ(nullptr, empty_slice.end()); + EXPECT_EQ(nullptr, empty_slice.cend()); + EXPECT_EQ(nullptr, empty_slice.data()); + EXPECT_TRUE(empty_slice.empty()); + EXPECT_EQ(0u, empty_slice.size()); + + EXPECT_FALSE(slice.empty()); + EXPECT_EQ(slice.cbegin(), slice.data()); + const epee::byte_slice slice2 = slice.take_slice(remove_size); EXPECT_EQ(original.begin() + remove_size, slice.begin()); @@ -1061,6 +1078,20 @@ TEST(ByteStream, ToByteSlice) EXPECT_EQ(nullptr, stream.data()); EXPECT_EQ(nullptr, stream.tellp()); EXPECT_TRUE(equal(source, slice)); + + stream = epee::byte_stream{}; + stream.reserve(1); + EXPECT_NE(nullptr, stream.data()); + EXPECT_NE(nullptr, stream.tellp()); + + const epee::byte_slice empty_slice{std::move(stream)}; + EXPECT_TRUE(empty_slice.empty()); + EXPECT_EQ(0u, empty_slice.size()); + EXPECT_EQ(nullptr, empty_slice.begin()); + EXPECT_EQ(nullptr, empty_slice.cbegin()); + EXPECT_EQ(nullptr, empty_slice.end()); + EXPECT_EQ(nullptr, empty_slice.cend()); + EXPECT_EQ(nullptr, empty_slice.data()); } TEST(ToHex, String) |