Skip site navigation (1) Skip section navigation (2)

Re: [PORTS] Port Bug Report: calling notify in pl/pgsql proc causes core dump

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: David Mansfield <david(at)cobite(dot)com>
Cc: pgsql-ports(at)postgreSQL(dot)org
Subject: Re: [PORTS] Port Bug Report: calling notify in pl/pgsql proc causes core dump
Date: 1999-09-23 17:14:01
Message-ID: 199909231714.NAA19561@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-ports
Is this fixed?


> 
> > 
> > Jan, this is yours.
> > 
> 
> Actually, I made a 'workaround' fix to this problem (after posting this
> bug report). I'll append the patch.  I don't pretend to understand the
> internals of this system, but my guess is that a simple statement like
> 'notify xyz' went through the planner, got an spi_plan, but the 'plan
> list' was empty.  So here's my patch, which may be fixing a symptom, not
> the cause, YMMV:
> 
> --- pl_exec.c~  Wed May 26 03:07:39 1999
> +++ pl_exec.c   Fri Jun 25 11:00:53 1999
> @@ -2482,6 +2482,10 @@
>  
>         plan = (Plan *) lfirst(spi_plan->ptlist);
>  
> +       /* it would seem as though plan can be null... --DAVID */
> +       if (plan == NULL)
> +               return;
> +
>         /* ----------
>          * 2. It must be a RESULT plan --> no scan's required
>          * ----------
> 
> 
> > 
> > > 
> > > ============================================================================
> > >                         POSTGRESQL BUG REPORT TEMPLATE
> > > ============================================================================
> > > 
> > > 
> > > Your name               : David Mansfield
> > > Your email address      : david(at)cobite(dot)com
> > > 
> > > Category                : runtime: back-end
> > > Severity                : serious
> > > 
> > > Summary: calling notify in pl/pgsql proc causes core dump
> > > 
> > > System Configuration
> > > --------------------
> > >   Operating System   : Linux 2.2.9
> > > 
> > >   PostgreSQL version : 6.5
> > > 
> > >   Compiler used      : gcc 2.7.2.3
> > > 
> > > Hardware:
> > > ---------
> > > RedHat 5.2
> > > 
> > > Versions of other tools:
> > > ------------------------
> > > RedHat 5.2 standard
> > > 
> > > --------------------------------------------------------------------------
> > > 
> > > Problem Description:
> > > --------------------
> > > calling notify in pl/pgsql proc causes core dump
> > > 
> > > --------------------------------------------------------------------------
> > > 
> > > Test Case:
> > > ----------
> > > createdb bugs
> > > psql bugs
> > > \i /usr/src/postgresql-6.5/src/pl/plpgsql/src/mklang.sql
> > > create  function a_func()
> > >         returns 
> > >                 char
> > >         as 
> > >                 'begin
> > >                        notify my_listen;
> > >                        return \'a\';
> > >                  end;'
> > >         language
> > >                 'plpgsql'
> > > ;
> > > select a_func();
> > > 
> > > 
> > > --------------------------------------------------------------------------
> > > 
> > > Solution:
> > > ---------
> > > 
> > > 
> > > --------------------------------------------------------------------------
> > > 
> > > 
> > > 
> > 
> > 
> > 
> 
> -- 
> /==============================\
> | David Mansfield              |
> | david(at)cobite(dot)com             |
> \==============================/
> 
> 


-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  maillist(at)candle(dot)pha(dot)pa(dot)us            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

In response to

Responses

pgsql-ports by date

Next:From: Ed LoehrDate: 1999-09-23 20:07:27
Subject: successful pg 6.5.2 install on RH 5.2
Previous:From: Thomas LockhartDate: 1999-09-23 13:40:56
Subject: Re: [PORTS] NEWBIE needs help

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group