From af6dc0e0356d44a60a9b70557261d392ba97072b Mon Sep 17 00:00:00 2001
From: Henry Fredrick Schreiner <henry.fredrick.schreiner@cern.ch>
Date: Tue, 26 Mar 2019 18:49:52 -0400
Subject: [PATCH] Adding fix for copy warning on clang 7 / macOS 10.14.4

---
 include/pybind11/numpy.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/pybind11/numpy.h b/include/pybind11/numpy.h
index 37471d8be9..ca954f59f2 100644
--- a/include/pybind11/numpy.h
+++ b/include/pybind11/numpy.h
@@ -1509,7 +1509,7 @@ struct vectorize_helper {
         if (trivial == broadcast_trivial::f_trivial) result = array_t<Return, array::f_style>(shape);
         else result = array_t<Return>(shape);
 
-        if (size == 0) return result;
+        if (size == 0) return std::move(result);
 
         /* Call the function */
         if (trivial == broadcast_trivial::non_trivial)
@@ -1517,7 +1517,7 @@ struct vectorize_helper {
         else
             apply_trivial(buffers, params, result.mutable_data(), size, i_seq, vi_seq, bi_seq);
 
-        return result;
+        return std::move(result);
     }
 
     template <size_t... Index, size_t... VIndex, size_t... BIndex>