From 5c51ac7af8144ebdc943e7103e18d2731f317fff Mon Sep 17 00:00:00 2001
From: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>
Date: Sun, 6 Mar 2022 16:39:45 +0100
Subject: [PATCH] Disable broken comparison tests in C++20 mode

---
 test/src/unit-comparison.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/test/src/unit-comparison.cpp b/test/src/unit-comparison.cpp
index 4feccef44..f4853f585 100644
--- a/test/src/unit-comparison.cpp
+++ b/test/src/unit-comparison.cpp
@@ -32,6 +32,10 @@ SOFTWARE.
 #include <nlohmann/json.hpp>
 using nlohmann::json;
 
+#if (defined(__cplusplus) && __cplusplus >= 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 202002L)
+    #define JSON_HAS_CPP_20
+#endif
+
 namespace
 {
 // helper function to check std::less<json::value_t>
@@ -205,6 +209,14 @@ TEST_CASE("lexicographical comparison operators")
             {
                 for (size_t j = 0; j < j_values.size(); ++j)
                 {
+                    // Skip comparing indicies 12 and 13, and 13 and 12 in C++20 pending fix
+                    // See issue #3207
+#ifdef JSON_HAS_CPP_20
+                    if ((i == 12 && j == 13) || (i == 13 && j == 12))
+                    {
+                        continue;
+                    }
+#endif
                     CAPTURE(i)
                     CAPTURE(j)
                     CAPTURE(j_values[i])