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-rw-r--r--libcxx/include/algorithm2
1 files changed, 1 insertions, 1 deletions
diff --git a/libcxx/include/algorithm b/libcxx/include/algorithm
index e003a59e3f0..02cbc816f61 100644
--- a/libcxx/include/algorithm
+++ b/libcxx/include/algorithm
@@ -1327,7 +1327,7 @@ __is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
forward_iterator_tag, forward_iterator_tag )
{
// shorten sequences as much as possible by lopping of any equal parts
- for (; __first1 != __last1 && __first2 != __last2; ++__first1, ++__first2)
+ for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
goto __not_done;
return __first1 == __last1 && __first2 == __last2;
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