David G Johnston <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> Am I missing something or has there been no consideration in this "forbid"
> plan on whether users will be able to retrieve, even if partially
> incorrectly, any jsonb data that has already been stored?
Data that's already been stored would look like the six characters \u0000,
which indeed might have been what it was anyway, since part of the
problem here is that we fail to distinguish "\\u0000" from "\u0000".
regards, tom lane