From 25a9beedb0c47e3e0f1da4a7fac0773a43e33754 Mon Sep 17 00:00:00 2001
From: Ivan Shapovalov <intelfx@intelfx.name>
Date: Sat, 2 Dec 2023 19:12:49 +0400
Subject: [PATCH] test: add a fallback definition for std::chrono::days

---
 test/chrono-test.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/chrono-test.cc b/test/chrono-test.cc
index b562a50ea4bf..7068c9799755 100644
--- a/test/chrono-test.cc
+++ b/test/chrono-test.cc
@@ -24,6 +24,12 @@ using testing::Contains;
 #  define FMT_HAS_C99_STRFTIME 1
 #endif
 
+#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907L
+using days = std::chrono::days;
+#else
+using days = std::chrono::duration<std::chrono::hours::rep, std::ratio<86400>>;
+#endif
+
 auto make_tm() -> std::tm {
   auto time = std::tm();
   time.tm_mday = 1;