commit b468741a9eb07fd2565df740b722ef3c446e6a9d
author Marshall Clow <mclow.lists@gmail.com> Mon Oct 30 15:50:00 2017 +0000
committer Marshall Clow <mclow.lists@gmail.com> Mon Oct 30 15:50:00 2017 +0000
tree 7be4d135eb55b5c5e2e13434f48f33f4c4248e4a
parent 3a1ab364c99c07df3ae2531ddf3724e7da9d7920

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

llvm-svn: 316914
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 05da5b0205aeada52a6838353d214db3723c79c7

include/algorithm

diff --git a/include/algorithm b/include/algorithm
index 282083a..f5776b4 100644
--- a/include/algorithm
+++ b/include/algorithm
@@ -5547,9 +5547,9 @@
         }
         else
         {
-            *__result = *__first1;
             if (!__comp(*__first1, *__first2))
                 ++__first2;
+            *__result = *__first1;
             ++__first1;
         }
     }