The previous message should have read "The fftwindow.cpp file contains the 
following code."

>>> 


From:  
"Dale Olds" <[email protected]> 

To: 
<[email protected]> 

Date:  
9/24/2009 11:05 AM 

Subject:  
[Rawstudio-dev] Syntax error leading to uninitialized variable in denoise    
plugin 

A few weeks ago, I had some trouble with segfaults using rawstudio from trunk. 
When I disabled the asm i386 optimizations, things got much better, but I 
eventually reverted to an older packaged build from OpenSUSE. Things are 
looking really good though, so I am looking forward to the next release.

While researching the segfault, I noticed something I believe would cause an 
intermittent use of some of the asm optimizations. The modules contains the 
following code:

FFTWindow::FFTWindow( int _w, int _h ) :
analysis(FloatImagePlane(_w, _h)),
synthesis(FloatImagePlane(_w,_h))
{
  analysisIsFlat = true;
  synthesisIsFlat = true;
  analysis.allocateImage();
  synthesis.allocateImage();
#if defined (__i386__) || defined (__x86_64__)
  SSEAvailable == !!(rs_detect_cpu_features() & RS_CPU_FLAG_SSE);
#endif
}

The problem is this line:
  SSEAvailable == !!(rs_detect_cpu_features() & RS_CPU_FLAG_SSE);

As I read it, this means that SSEAvailable is not actually assigned any value 
here, and is left uninitialized (at least by this code). Shouldn't this line be 
as follows?
  SSEAvailable = !!(rs_detect_cpu_features() & RS_CPU_FLAG_SSE);

--Dale



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