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Fix undefined pointer arithmetic for reverse() and unique() in case the range is empty (begin == end)

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git-svn-id: http://pugixml.googlecode.com/svn/trunk@926 99668b35-9821-0410-8761-19e4c4f06640
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arseny.kapoulkine@gmail.com 2012-11-08 16:01:23 +00:00
parent 973296bcb1
commit 43f3888dc1
1 changed files with 2 additions and 2 deletions
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4
src/pugixml.cpp
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@ -5479,13 +5479,13 @@ PUGI__NS_BEGIN
template <typename I> void reverse(I begin, I end)
{
while (begin + 1 < end) swap(*begin++, *--end);
while (end - begin > 1) swap(*begin++, *--end);
}
template <typename I> I unique(I begin, I end)
{
// fast skip head
while (begin + 1 < end && *begin != *(begin + 1)) begin++;
while (end - begin > 1 && *begin != *(begin + 1)) begin++;
if (begin == end) return begin;