don't compare elements with themselves during qsort.
authorRich Felker <dalias@aerifal.cx>
Thu, 17 Feb 2011 05:03:24 +0000 (00:03 -0500)
committerRich Felker <dalias@aerifal.cx>
Thu, 17 Feb 2011 05:03:24 +0000 (00:03 -0500)
this is actually a workaround for a bug in gcc, whereby it asserts
inequality of the keys being compared...


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