FreeTDS Development Group

["Lowden, James K" <LowdenJK AT bernstein.com>]

> From: Thompson, Bill D (London) [mailto:ThompBil AT exchange.uk.ml.com]
> Sent: March 11, 2003 1:19 AM
> 
> I've pondered that particular issue many times over the last 
> year or so.
> However my only (feeble) attempt at overcoming it was to 
> increase the size
> of the aforementioned buffer from 256 to 4096 bytes!
> 
> Sounds like you've got a good solution.

Checked in, along with some minor changes.  

I'm working on a better version of _bcp_get_term_data.  The one in CVS won't
handle some situations correctly.  

--jkl

> > From:       James K. Lowden [SMTP:jklowden AT schemamania.org]
> > Sent:       Tuesday, March 11, 2003 5:25 AM
> > To: FreeTDS Development Group
> > Subject:    Re: [freetds] freebcp text column width limit is 4090
> > 
> > On Mon, 10 Mar 2003 14:08:10 -0500, "Lowden, James K"
> > <LowdenJK AT bernstein.com> wrote:
> > > 
> > > I have a table with a text column.  Attempting to load it, freebcp
> > > segfaults if the column's data are more than 4090 bytes.  
> > 
> > _bcp_get_term_data is passed a buffer into which it places 
> a column's
> > worth of data.  It is not told how big the buffer is, and the caller
> > allocates only 4096 bytes, statically.  
> > 
> > I changed the signature to accept an array of pointers, the 
> first of which
> > is allocated by the caller.  If _bcp_get_term_data requires 
> more room, it
> > allocates subsequent members of the array in 1 MB chunks.  
> The array has
> > 1000 pointers; if it's exhausted, we need more address 
> space.  The caller
> > knows from the returned size how many buffers (if any) were 
> allocated.  
> > 
> > I haven't committed yet because it doesn't work yet.  I 
> just wanted you to
> > know I've isolated the problem and solved it, in principle.  
> > 
> > --jkl
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