Somehow search_n never got tested, so of course it had a bug in it. This fixes http://llvm.org/bugs/show_bug.cgi?id=15667. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@178764 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/algorithm b/include/algorithm index 4adcc69..39191db 100644 --- a/include/algorithm +++ b/include/algorithm 
@@ -1398,7 +1398,7 @@  // Find first element in sequence that matchs __value_, with a mininum of loop checks  while (true)  { - if (__first == __s) // return __last if no element matches __value_ + if (__first >= __s) // return __last if no element matches __value_  return __last;  if (__pred(*__first, __value_))  break;