From 8244ef2cc7f6eb582ad18da9498bfe46c65a0671 Mon Sep 17 00:00:00 2001
From: Christian Trott <crtrott@sandia.gov>
Date: Mon, 10 Jun 2024 12:59:08 -0600
Subject: [PATCH] Avoid illegal access for degenerated subslices of length 0

---
 tests/test_submdspan.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/test_submdspan.cpp b/tests/test_submdspan.cpp
index 774d3535..28d0732d 100644
--- a/tests/test_submdspan.cpp
+++ b/tests/test_submdspan.cpp
@@ -262,6 +262,7 @@ struct TestSubMDSpan<
     } else if constexpr (SubMDSpan::rank() == 0) {
       return (&src_mds[SrcIdx...]==&sub_mds[]); 
     } else {
+      if(sub_mds.size() == 0) return true;
       return (&src_mds[SrcIdx...]==&sub_mds[SubIdx...]);
     }
 #else
@@ -270,6 +271,7 @@ struct TestSubMDSpan<
     } else if constexpr (SubMDSpan::rank() == 0) {
       return (&src_mds(SrcIdx...)==&sub_mds());
     } else {
+      if(sub_mds.size() == 0) return true;
       return (&src_mds(SrcIdx...)==&sub_mds(SubIdx...));
     }
 #endif