From b81d6e40e13708a6019ff9758db263c2f385ed80 Mon Sep 17 00:00:00 2001
From: "Jordan Maples [MSFT]" <49793787+JordanMaples@users.noreply.github.com>
Date: Fri, 7 Feb 2020 14:15:44 -0800
Subject: [PATCH] constexpr the make_subspan calls.

---
 include/gsl/span | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/gsl/span b/include/gsl/span
index 6cfc91c..445826c 100644
--- a/include/gsl/span
+++ b/include/gsl/span
@@ -676,7 +676,7 @@ private:
     };
 
     template <std::size_t CallerExtent>
-    span<element_type, dynamic_extent> make_subspan(size_type offset, size_type count,
+    constexpr span<element_type, dynamic_extent> make_subspan(size_type offset, size_type count,
                                                     subspan_selector<CallerExtent>) const
     {
         const span<element_type, dynamic_extent> tmp(*this);
@@ -686,7 +686,7 @@ private:
     // clang-format off
     GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
     // clang-format on
-    span<element_type, dynamic_extent> make_subspan(size_type offset, size_type count,
+    constexpr span<element_type, dynamic_extent> make_subspan(size_type offset, size_type count,
                                                     subspan_selector<dynamic_extent>) const
     {
         Expects(size() >= offset);