From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 17 Sep 2012 13:31:08 +0000 (+0100)
Subject: pathmtu/pathmtu.c: Fix search algorithm.
X-Git-Tag: 1.0.0pre11~3
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/tripe/commitdiff_plain/d245350adb5c3c687159409dcecc24fd1e7098d0?hp=d245350adb5c3c687159409dcecc24fd1e7098d0

pathmtu/pathmtu.c: Fix search algorithm.

Turns out I can't write a binary search algorithm.  Fiddle with it so
that it doesn't get stuck sometimes.  Some of the bounds management is a
little tricky, so add some documentation and assertions to make sure
that everything is as expected.
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