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2015-11-20 14:12 GMT+02:00 Roberto Ierusalimschy <roberto@inf.puc-rio.br>:
> (One possible break, not related to the __len metamethod, would be an
> arithmetic overflow when computing the pivot <<(lo+up)/2>>; we should
> do that computation with unsigneds.)
lo+(up-lo)/2
is overflow-free.