Re: Add missing includes

Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> On 2023-May-22, Tristan Partin wrote:
>> Some files were missing information from the c.h header.

> Actually, these omissions are intentional, and we have bespoke handling
> for this in our own header-checking scripts (src/tools/pginclude). I
> imagine this is documented somewhere, but ATM I can't remember where.
> (And if not, maybe that's something we should do.)

Yeah, the general policy is that .h files should not explicitly include
c.h (nor postgres.h nor postgres_fe.h). Instead, .c files should include
the appropriate one of those three files first. This allows sharing of
.h files more easily across frontend/backend/common environments.

I'm not sure where this is documented either.

regards, tom lane