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

>
> 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 |
\==============================/