From: Eric Sunshine <sunshine@sunshineco.com>
Date: Tue, 23 Jul 2013 14:28:04 +0000 (-0400)
Subject: range-set: fix sort_and_merge_range_set() corner case bug
X-Git-Tag: v1.8.4-rc0~13^2~1^2~4
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/b6679e768f39f718b7f2983d1958f5fb1121f356?hp=b6679e768f39f718b7f2983d1958f5fb1121f356

range-set: fix sort_and_merge_range_set() corner case bug

When handed an empty range_set (range_set.nr == 0),
sort_and_merge_range_set() incorrectly sets range_set.nr to 1 at exit.
Subsequent range_set functions then access the bogus range at element
zero and crash or throw an assertion failure. Fix this bug.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Acked-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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