From d1e9184bd02b75301b7a3da507d9a4fca970cd75 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Wed, 13 Sep 2023 20:23:18 +0200
Subject: add no_unique_address macro

cf.  https://devblogs.microsoft.com/cppblog/msvc-cpp20-and-the-std-cpp20-switch/
---
 compat/defs.hpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'compat/defs.hpp')

diff --git a/compat/defs.hpp b/compat/defs.hpp
index 585c45d1..7fa74c9f 100644
--- a/compat/defs.hpp
+++ b/compat/defs.hpp
@@ -53,3 +53,11 @@
 #else
 #   define fm_noinline __attribute__((noinline))
 #endif
+
+#ifdef _MSC_VER
+// standard version not supported in MSVC v14x ABI
+// see https://devblogs.microsoft.com/cppblog/msvc-cpp20-and-the-std-cpp20-switch/
+#define fm_no_unique_address msvc::no_unique_address
+#else
+#define fm_no_unique_address no_unique_address
+#endif
-- 
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