Re: BackgroundWorkerInitializeConnection(NULL, ...) doesn't work

Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> Andrew Tipton wrote:
>> However, should one attempt to pass NULL for the dbname parameter, the
>> process will die with:
>> FATAL: database 0 does not exist

> Hmm, the intention is that this code path mimics what the autovacuum
> launcher does to establish its connection. It did work at some point;
> maybe I broke this before commit. I will give it a look next week.

I'm pretty sure InitPostgres skips a bunch of stuff if
IsAutoVacuumLauncherProcess(). If you just want to make an environment
equivalent to that process's, maybe those tests should be replaced with
"if (dbname == NULL)". But the claim that you have access to shared
catalogs in this state is still wrong.

regards, tom lane