Merge "libbinder: Allow vector construction from unaligned data." am:...

        c->clear(); // must clear before resizing/reserving otherwise move ctors may be called.

        if constexpr (is_pointer_equivalent_array_v<T>) {

            // could consider POD without gaps and alignment of 4.

            auto data = reinterpret_cast<const T*>(

                    readInplace(static_cast<size_t>(size) * sizeof(T)));

            size_t dataLen;

            if (__builtin_mul_overflow(size, sizeof(T), &dataLen)) {

                return -EOVERFLOW;

            }

            auto data = reinterpret_cast<const T*>(readInplace(dataLen));

            if (data == nullptr) return BAD_VALUE;

            c->insert(c->begin(), data, data + size); // insert should do a reserve().

            // std::vector::insert and similar methods will require type-dependent

            // byte alignment when inserting from a const iterator such as `data`,

            // e.g. 8 byte alignment for int64_t, and so will not work if `data`

            // is 4 byte aligned (which is all Parcel guarantees). Copying

            // the contents into the vector directly, where possible, circumvents

            // this.

            c->resize(size);

            memcpy(c->data(), data, dataLen);

        } else if constexpr (std::is_same_v<T, bool>

                || std::is_same_v<T, char16_t>) {

            c->reserve(size); // avoids default initialization