Re: Duplicate variable declared?

Joe Conway wrote:

mike g wrote:
In file postgresql-7.4.2/src/backend/utils/fmgrtab.c

This is an automatically generated file. The reason for duplicate
array_push declarations is that one-and-the-same array_push function
is used to implement two SQL functions, array_append and
array_prepend. I don't imagine the duplicate declaration hurts anything.

My apologies for being too lazy to copy and paste the email address into
a new email. I forgot hitting reply would add it to thread rather than
starting a new one.

With the large number of variables declared in that block I was thinking
that someone was entering it off a list in another file and accidently
did it twice.

With it being legal C I will ignore any others that might have shown up
in the list.

I believe it is explicitly legal C, in fact.

The C faq at http://www.faqs.org/faqs/C-faq/faq/ states:

First, though there can be many "declarations" (and in many
translation units) of a single "global" (strictly speaking,
"external") variable or function, there must be exactly one
"definition".

cheers

andrew