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From: Szabolcs Nagy <nsz@port70.net>
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Subject: Re: src/string/strstr.c, src/string/wcsstr.c: wrong estimates
 for MIN(l,63)?
Date: Fri, 21 Mar 2014 18:07:45 +0100
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* Rich Felker <dalias@aerifal.cx> [2014-03-21 12:48:17 -0400]:
> On Fri, Mar 21, 2014 at 03:07:22PM +0100, Yves Bastide wrote:
> > /* Fast estimate for MIN(l,63) */
> > size_t grow = l | 63;
> > 
> > "grow" is thus always at least 63...
> 
> If you look at how grow is used on the very next line, this should
> make sense.

the comment is wrong though
z grows by at least max(63,l) unless end-of-string is reached