Re: shared library strangeness?

I am always confused when to bump the minor and when the major.  I also
was not sure how significant the change would be for apps.  We added
const, and I changed the return type of one function from short to int. 
Seems like ConnectionBad was also changed.

I bumped the minor in preparation for 7.2.  Seems the major needs
bumping.  I will do it now for libpq++.


> I just upgraded PostgreSQL from 21 March CVS (rc1?) to May 19 16:21 GMT CVS.
> I found that all my cgi/fcg scripts which use libpq++ stopped working in
> the vague sense of apache mentioning an internal server error. Relinking
> them cured the problem (had to do this in haste => unfortunately no more
> information)
> 
> -rwxr-xr-x  1 postgres  postgres  154795 Mar 21 21:28 libpq++.so.3.1
> -rwxr-xr-x  1 postgres  postgres  155212 May 21 14:48 libpq++.so.3.2
> 
> is the change. The programs using libpq only (not lipq++ as well) worked as
> before. I am sorry, I don't have an error message to say how it is broken,
> but I do have a slight feeling that maybe the major shared library number
> could have been bumped up...
> 
> Ah... A clue!
> 
> Undefined PLT symbol "ConnectionBad__12PgConnection" (reloc type = 7, symnum
> = 132)
> 
> quartz% nm -g libpq++.so.3.1 | grep ConnectionBad
> 000025e8 T ConnectionBad__12PgConnection
> quartz% !:s/1/2/
> nm -g libpq++.so.3.2 | grep ConnectionBad
> 000024fc T ConnectionBad__C12PgConnection
> 
> RCS file:
> /home/projects/pgsql/cvsroot/pgsql/src/interfaces/libpq++/pgconnection.h,v
> retrieving revision 1.10
> retrieving revision 1.11
> diff -u -r1.10 -r1.11
> --- pgconnection.h      2001/02/10 02:31:30     1.10
> +++ pgconnection.h      2001/05/09 17:29:10     1.11
> 
> -   int ConnectionBad();
> ...
> +   bool ConnectionBad() const;
> 
> 
> So I would suggest that the major number be bumped, leaving a small window
> since 9 May with a problem..
> 
> Cheers,
> 
> Patrick
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
> 

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026