Re: [HACKERS] Segmentation fault with lo_export

> Bruce Momjian wrote:
> >
> > Edmund, has this been fixed?
> >
> > > Hello,
> > >
> > > this problem appeared quite frequently in the last two years:
> > > the libpq-function lo_export gives a segmentation fault.
> > >
> > > This happend with the current snapshot (I don't remember the
> > > date, it was begin of June, filesize: 3980592) on Linux-2.0.34.
> > > It worked with Postgresql-6.3.2.
> > >
> > > Edmund
>
>
> Hi Bruce,
>
> it looks like the last time I tested lo_export it worked
> just by chance.
>
> The bug seems to be in interfaces/libpq/fe-lobj.c line 424.
> The two functions lo_import and lo_export are somehow
> similar when exchanging the read/write for Unix file
> and inv file. But whereas read() reads exactly BUFSIZ
> bytes, lo_read() appends a '\0' after having read
> BUFSIZ bytes. So line 424 should be:
>
>       char        buf[LO_BUFSIZE+1];
>
> instead of:
>
>     char        buf[LO_BUFSIZE];
>
> Could you please apply this bug-fix ?
> Also the code example in the man page for
> large-objects needs to be corrected.
>
> I can't do it by myself because I am on
> vacation on a Greek island, and the only
> message I'm seeing frequently is
> 'modem hangup, no CARRIER' ...

Extra null removed.

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