Re: upgrade failure from 9.5 to head

On 08/02/2015 04:00 PM, Tom Lane wrote:
> Andres Freund <andres(at)anarazel(dot)de> writes:
>> On 2015-08-01 19:13:05 -0400, Noah Misch wrote:
>>> That's a bug. The test_ddl_deparse suite leaves a shell type, which
>>> pg_upgrade fails to reproduce. Whether to have pg_upgrade support that or
>>> just error out cleanly is another question.
>> There seems little justification to not support shell types. We should
>> also add a shell type to the standard regression testing database,
>> they're "weird" enough that some increased exposure seems like a good
>> idea.
> Agreed. I was a bit surprised to find that pg_dump skips shell types,
> actually. Probably that's a hangover from when "create function foo()
> returns bogus" would autocreate a shell type named "bogus". In all
> modern releases, it's fairly hard to accidentally create a shell type,
> so we should probably assume that the user meant it to be there.
>
>

I'm fine with fixing it, but what's the actual use case for a long lived
shell type?

cheers

andrew