HasPlain() gives HasPlain(0) now

[raman-maker]

julia> struct HasPlain
n::Int
HasPlain() = new()
end

julia> HasPlain()
HasPlain(0)

julia> HasPlain()
HasPlain(0)

[adienes]

as the docstring says, these contents are undefined so the value is not guaranteed to be anything, neither 0 nor what you have put instead.