Hi all,
i'm seeing rrdtool basically hanging in horizontal_grid() using
--units-exponents, sometimes, not always.  The problem is with
the following bit of code:

	    for(i=0;ylab[i].grid > 0;i++){
		pixel = im->ysize / (scaledrange / ylab[i].grid);
		if (gridind == -1 && pixel > 5) {
		    gridind = i;
		    break;
		}
	    }

In some cases, pixel is never > 5, which leaves gridind to be -1.
The attached diff seems to work, but i'm not sure it's
entirely appropriate.


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-- URL : http://www.ee.ethz.ch/~slist/p/rrdtool-1.0.49.diff


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