Buffer overrun in ippiFilterRow?

amantri — Fri, 28 Jul 2006 01:42:38 GMT

Hi,

When I call the ippiFilterRow function with small arrays, more memory is being modified than the dimensions specified in the ROI. An example is shown below.The bug happens whenlen<=10 in the following code. For len>=11, it works allright.

 const int len = 7;
float pSrc[len];// Using a vector of dimensions len x 1
float pDst[2*len] = {0};// Zero the destination

for(int i=0; i = i*i;// Fill the source

const int filterLen = 3;
float filter[filterLen] = {0.5, 0, -0.5};
int filterAnchor = 1;

IppStatus ippiReturnStatus;
IppiSize roiSize;

// Should modify only (len-2)x1 elements in the destination.
 // pSrc+1 and len-2 is for handling the border pixels correctly.
 roiSize.width=len-2; roiSize.height=1;
ippiReturnStatus = ippiFilterRow_32f_C1R( pSrc+1, len*sizeof(float), pDst+1, len*sizeof(float), roiSize, filter, filterLen, filterAnchor);

Platform: Windows XP with Visual Studio 6 and IPP 4.1

Please let me know if I am missing something in the above code.
Is this a known bug, and are there any fixes for it? (I tried searching for this problem, but didnt find anything).
(Also, updating to IPP 5.1 is not an option at the moment, though it would help to know if the bug is fixed in 5.1)

Thanks

Anup Mantri

Re: Buffer overrun in ippiFilterRow?

Chao_Y_Intel — Mon, 31 Jul 2006 11:19:34 GMT

Hi Anup,
There is one known bug on IPP5.1 with ippiFilterRow_32f_C1R. We fixed on IPP5.0. so could you help to check with latest IPP release?

Regards,
Chao

topic Buffer overrun in ippiFilterRow? in Intel® Integrated Performance Primitives

Buffer overrun in ippiFilterRow?

Re: Buffer overrun in ippiFilterRow?