[FWTools] GDALOpen craches the second time it is called....

[Kolberg Sjur A]

Hello again,

This is somewhat embarrassing...

For some inexplainable reason I believed that the offending function
CreateTransformedGrid() was a part of GDAL. It is actually my own, and
once realized, it was an easy task to track the error further, finding
the cause in a delete on a GDALDriver*. This object was created on the
GDAL side, so deleting it on my program.exe side caused a memory
corruption which was undetected by the tests I had put in.

So, everything now works fine, there's no bug to file, and I apologise
for suggesting you debug my non-supplied code...

Best regards,

Sjur K :-)

 

> -----Original Message-----
> From: Frank Warmerdam [mailto:warmerdam at pobox.com] 
> Sent: 15 mai 2008 06:42
> To: Kolberg Sjur A
> Cc: FWTools at lists.maptools.org
> Subject: Re: [FWTools] GDALOpen craches the second time it is 
> called....
> 
> Kolberg Sjur A wrote:
> > I managed to isolate the call that make the next GDALOpen() crash.
> > 
> > Consider this code and ignore the details of the 
> > CreateTransformedGrid() call, neither its parameters nor 
> its result is 
> > relevant here. The first
> > GDALOpen() call works OK, the second is identical, but 
> crashes. Does 
> > anyone have a clue to how the CreateTransformedGrid() call 
> can cause this ?
> 
> Sjur,
> 
> The obvious conclusion is that the CreateTransformedGrid() 
> function is doing something wrong, possibly corrupting the 
> heap.  So i don't think it is fair to ask us to ignore what 
> CreateTransformedGrid() does but still expect suggestions on 
> what might be causing the problem.
> 
> Best regards,
> -- 
> ---------------------------------------+----------------------
> ----------
> ---------------------------------------+------
> I set the clouds in motion - turn up   | Frank Warmerdam, 
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | President OSGeo, 
> http://osgeo.org
> 
>