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fix find_symmetric_difference

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If distance(first1, lat1) > distance(first2, last2), the find_symmetric_difference
caused an infinite loop.

cf. http://melpon.org/wandbox/permlink/Ca87oxrYGg6gAugj
This commit is contained in:
Mitsuru Kariya 2015-03-22 14:48:10 +09:00
parent 6a9cda9d4c
commit 924a33bc50
1 changed files with 1 additions and 1 deletions
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2
sprout/algorithm/find_symmetric_difference.hpp
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@ -55,7 +55,7 @@ namespace sprout {
InputIterator1 last1, InputIterator2 last2, Compare comp, typename std::iterator_traits<InputIterator1>::difference_type n
)
{
return sprout::tuples::get<2>(current) || sprout::tuples::get<0>(current) == last1 ? current
return sprout::tuples::get<2>(current) || sprout::tuples::get<0>(current) == last1 || sprout::tuples::get<1>(current) == last2 ? current
: sprout::detail::find_symmetric_difference_impl(
sprout::detail::find_symmetric_difference_impl_1(
current,