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Fix UB in CopyMakeConstBoder_8u

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Caused by overflow of arithmetic operators conversion rank
This commit is contained in:
Federico Martinez 2021-02-23 08:44:17 +01:00 committed by Alexander Alekhin
parent 20a46b31cd
commit 773262bc09
1 changed files with 3 additions and 4 deletions
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7
modules/core/src/copy.cpp
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@ -1325,13 +1325,12 @@ void copyMakeConstBorder_8u( const uchar* src, size_t srcstep, cv::Size srcroi,
memcpy( dstInner + srcroi.width, constBuf, right ); memcpy( dstInner + srcroi.width, constBuf, right );
} }
dst += dststep*top;
for( i = 0; i < top; i++ ) for( i = 0; i < top; i++ )
memcpy(dst + (i - top)*dststep, constBuf, dstroi.width); memcpy(dst + i * dststep, constBuf, dstroi.width);
dst += (top + srcroi.height) * dststep;
for( i = 0; i < bottom; i++ ) for( i = 0; i < bottom; i++ )
memcpy(dst + (i + srcroi.height)*dststep, constBuf, dstroi.width); memcpy(dst + i * dststep, constBuf, dstroi.width);
} }
} }