Re: Writing SRF

it has been years since i've mucked in the C++ swamp but
that means your (near) heap is ok but you're stack is hosed..

probably specific to compiler (version) and Operating System(version) and environment settings..ping back if you are still experiencing those problems with those configuration settings

Saludos Cordiales desde EEUU!
Martin Gainty
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> From: jorgearevalo(at)gis4free(dot)org
> Date: Thu, 29 Apr 2010 19:45:41 +0200
> Subject: Re: [GENERAL] Writing SRF
> To: tgl(at)sss(dot)pgh(dot)pa(dot)us
> CC: pgsql-general(at)postgresql(dot)org
>
> On Thu, Apr 29, 2010 at 3:56 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Jorge Arevalo <jorgearevalo(at)gis4free(dot)org> writes:
> >> Yes. For example, the function expects 2 arguments, and it's called
> >> with 2 arguments: 1 composite type (following this format
> >> https://svn.osgeo.org/postgis/spike/wktraster/doc/RFC1-SerializedFormat)
> >> and one integer. But PG_NARGS() returns a really big value (16297)
> >> when I first check the number of arguments at the beginning of the
> >> function. Has sense?
> >
> > Given only that data point, I would guess that you forgot to mark the
> > function as being called with V1 protocol (PG_FUNCTION_INFO_V1).
> >
> > regards, tom lane
> >
>
> Many thanks! That was one of my errors. Another one was this:
>
> char szDataPointer[10];
> sprintf(szDataPointer, "%p", a_pointer);
>
> These lines caused a memory error. I changed them for:
>
> char * pszDataPointer;
> pszDataPointer = (char *)allocator(10 * sizeof(char));
> sprintf(pszDataPointer, "%p", a_pointer);
>
> Meaning "allocator" a memory allocator in a valid memory context for PostgreSQL.
>
> And seems to work :-). Is the static memory "dangerous" in a
> PostgreSQL memory context?
>
> Thanks again!
> Jorge
>
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