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fix memory corruption in fhog #15

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fix memory corruption in fhog #15

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4 changes: 3 additions & 1 deletion fdsst/fhog.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -363,7 +363,9 @@ bool fhog( float *M, float *O, float *H, int h, int w, int binSize,
if(sz <= 0){
return false;
}
R1 = (float*) wrCalloc(wb*hb*nOrients*2,sizeof(float));
// __mm_storeu_ps will write 128 bits to address of pointer.
// It would cause memory corruption if memory allocated here is not large enough
R1 = (float*) wrCalloc(wb*hb*nOrients*2 + 4 ,sizeof(float));
gradHist( M, O, R1, h, w, binSize, nOrients*2, softBin, true );
// compute unnormalized contrast insensitive histograms
R2 = (float*) wrCalloc(wb*hb*nOrients,sizeof(float));
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