Program: 195496
Project: 195496
Buggy source:
/** 
 * {@inheritDoc}
 */
@Override protected void onLayout(boolean changed,int left,int top,int right,int bottom){
  consistencyCheck();
  int targetWidth=right - left;
  int targetHeight=bottom - top;
  int paddingLeft=getPaddingLeft();
  int paddingTop=getPaddingTop();
  int paddingRight=getPaddingRight();
  int paddingBottom=getPaddingBottom();
  mHorizontalAxis.layout(targetWidth - paddingLeft - paddingRight);
  mVerticalAxis.layout(targetHeight - paddingTop - paddingBottom);
  int[] hLocations=mHorizontalAxis.getLocations();
  int[] vLocations=mVerticalAxis.getLocations();
  for (int i=0, N=getChildCount(); i < N; i++) {
    View c=getChildAt(i);
    if (c.getVisibility() == View.GONE)     continue;
    LayoutParams lp=getLayoutParams(c);
    Spec columnSpec=lp.columnSpec;
    Spec rowSpec=lp.rowSpec;
    Interval colSpan=columnSpec.span;
    Interval rowSpan=rowSpec.span;
    int x1=hLocations[colSpan.min];
    int y1=vLocations[rowSpan.min];
    int x2=hLocations[colSpan.max];
    int y2=vLocations[rowSpan.max];
    int cellWidth=x2 - x1;
    int cellHeight=y2 - y1;
    int pWidth=getMeasurement(c,true);
    int pHeight=getMeasurement(c,false);
    Alignment hAlign=getAlignment(columnSpec.alignment,true);
    Alignment vAlign=getAlignment(rowSpec.alignment,false);
    Bounds boundsX=mHorizontalAxis.getGroupBounds().getValue(i);
    Bounds boundsY=mVerticalAxis.getGroupBounds().getValue(i);
    int gravityOffsetX=hAlign.getGravityOffset(c,cellWidth - boundsX.size(true));
    int gravityOffsetY=vAlign.getGravityOffset(c,cellHeight - boundsY.size(true));
    int leftMargin=getMargin(c,true,true);
    int topMargin=getMargin(c,false,true);
    int rightMargin=getMargin(c,true,false);
    int bottomMargin=getMargin(c,false,false);
    int sumMarginsX=leftMargin + rightMargin;
    int sumMarginsY=topMargin + bottomMargin;
    int alignmentOffsetX=boundsX.getOffset(this,c,hAlign,pWidth + sumMarginsX,true);
    int alignmentOffsetY=boundsY.getOffset(this,c,vAlign,pHeight + sumMarginsY,false);
    int width=hAlign.getSizeInCell(c,pWidth,cellWidth - sumMarginsX);
    int height=vAlign.getSizeInCell(c,pHeight,cellHeight - sumMarginsY);
    int dx=x1 + gravityOffsetX + alignmentOffsetX;
    int cx=!isLayoutRtl() ? paddingLeft + leftMargin + dx : targetWidth - width - paddingRight- rightMargin- dx;
    int cy=paddingTop + y1 + gravityOffsetY+ alignmentOffsetY+ topMargin;
    if (width != c.getMeasuredWidth() || height != c.getMeasuredHeight()) {
      c.measure(makeMeasureSpec(width,EXACTLY),makeMeasureSpec(height,EXACTLY));
    }
    c.layout(cx,cy,cx + width,cy + height);
  }
}

Fixed version (ground truth):
/** 
 * {@inheritDoc}
 */
@Override protected void onLayout(boolean changed,int left,int top,int right,int bottom){
  consistencyCheck();
  int targetWidth=right - left;
  int targetHeight=bottom - top;
  int paddingLeft=getPaddingLeft();
  int paddingTop=getPaddingTop();
  int paddingRight=getPaddingRight();
  int paddingBottom=getPaddingBottom();
  mHorizontalAxis.layout(targetWidth - paddingLeft - paddingRight);
  mVerticalAxis.layout(targetHeight - paddingTop - paddingBottom);
  int[] hLocations=mHorizontalAxis.getLocations();
  int[] vLocations=mVerticalAxis.getLocations();
  for (int i=0, N=getChildCount(); i < N; i++) {
    View c=getChildAt(i);
    if (c.getVisibility() == View.GONE)     continue;
    LayoutParams lp=getLayoutParams(c);
    Spec columnSpec=lp.columnSpec;
    Spec rowSpec=lp.rowSpec;
    Interval colSpan=columnSpec.span;
    Interval rowSpan=rowSpec.span;
    int x1=hLocations[colSpan.min];
    int y1=vLocations[rowSpan.min];
    int x2=hLocations[colSpan.max];
    int y2=vLocations[rowSpan.max];
    int cellWidth=x2 - x1;
    int cellHeight=y2 - y1;
    int pWidth=getMeasurement(c,true);
    int pHeight=getMeasurement(c,false);
    Alignment hAlign=columnSpec.getAbsoluteAlignment(true);
    Alignment vAlign=rowSpec.getAbsoluteAlignment(false);
    Bounds boundsX=mHorizontalAxis.getGroupBounds().getValue(i);
    Bounds boundsY=mVerticalAxis.getGroupBounds().getValue(i);
    int gravityOffsetX=hAlign.getGravityOffset(c,cellWidth - boundsX.size(true));
    int gravityOffsetY=vAlign.getGravityOffset(c,cellHeight - boundsY.size(true));
    int leftMargin=getMargin(c,true,true);
    int topMargin=getMargin(c,false,true);
    int rightMargin=getMargin(c,true,false);
    int bottomMargin=getMargin(c,false,false);
    int sumMarginsX=leftMargin + rightMargin;
    int sumMarginsY=topMargin + bottomMargin;
    int alignmentOffsetX=boundsX.getOffset(this,c,hAlign,pWidth + sumMarginsX,true);
    int alignmentOffsetY=boundsY.getOffset(this,c,vAlign,pHeight + sumMarginsY,false);
    int width=hAlign.getSizeInCell(c,pWidth,cellWidth - sumMarginsX);
    int height=vAlign.getSizeInCell(c,pHeight,cellHeight - sumMarginsY);
    int dx=x1 + gravityOffsetX + alignmentOffsetX;
    int cx=!isLayoutRtl() ? paddingLeft + leftMargin + dx : targetWidth - width - paddingRight- rightMargin- dx;
    int cy=paddingTop + y1 + gravityOffsetY+ alignmentOffsetY+ topMargin;
    if (width != c.getMeasuredWidth() || height != c.getMeasuredHeight()) {
      c.measure(makeMeasureSpec(width,EXACTLY),makeMeasureSpec(height,EXACTLY));
    }
    c.layout(cx,cy,cx + width,cy + height);
  }
}