Fix PR#22433. The algorithm is_partitioned was testing an item in the middle of the sequence twice.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@227824 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/algorithm b/include/algorithm
index 9c51284..e8720cc 100644
--- a/include/algorithm
+++ b/include/algorithm
@@ -3148,6 +3148,9 @@
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
+ if ( __first == __last )
+ return true;
+ ++__first;
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;