Fix PR#35119 : set_union misbehaves with move_iterators. Thanks to Denis Yaroshevskiy for both the bug report and the fix.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@316914 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-30 15:50:00 +00:00
parent 9bc42cf1d7
commit c3fa9655a4
2 changed files with 45 additions and 1 deletions
--- a/include/algorithm
+++ b/include/algorithm
@@ -5547,9 +5547,9 @@ __set_union(_InputIterator1 __first1, _InputIterator1 __last1,
        }
        else
        {
-            *__result = *__first1;
            if (!__comp(*__first1, *__first2))
                ++__first2;
+            *__result = *__first1;
            ++__first1;
        }
    }