diff options
Diffstat (limited to 'libcxx/include/experimental/algorithm')
| -rw-r--r-- | libcxx/include/experimental/algorithm | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libcxx/include/experimental/algorithm b/libcxx/include/experimental/algorithm index 3902111c54e..10eafbdbabe 100644 --- a/libcxx/include/experimental/algorithm +++ b/libcxx/include/experimental/algorithm @@ -107,6 +107,9 @@ _SampleIterator sample(_PopulationIterator __first, _PopCategory; typedef typename iterator_traits<_PopulationIterator>::difference_type _Difference; + static_assert(__is_forward_iterator<_PopulationIterator>::value || + __is_random_access_iterator<_SampleIterator>::value, + "SampleIterator must meet the requirements of RandomAccessIterator"); typedef typename common_type<_Distance, _Difference>::type _CommonType; _LIBCPP_ASSERT(__n >= 0, "N must be a positive number."); return _VSTD_LFTS::__sample( |
