sas added a comment.
In https://reviews.llvm.org/D40537#937862, @clayborg wrote:
> A better solution would be to initialize UUID::m_num_uuid_bytes with zero and
> only set it to a valid value if we set bytes into it. Then UUID::IsValid()
> becomes easy:
>
> bool UUID::IsValid() const { return m_num_uuid_bytes > 0; }
>
>
> This would allows us to actually have a UUID value that is valid and all
> zeroes. A few comments would need to be fixed as it currently assumes length
> is 16 or 20.
Yes but the current default constructor of the `UUID` class creates a 16-bytes
all-zeroes UUID. I'm not sure I want to be changing the default behavior that
the rest of lldb might be depending on currently.
https://reviews.llvm.org/D40537
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