From e0e4da87f21f79376ea37e90db60aae8d7e9f010 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sat, 22 Mar 2025 14:12:50 +0200
Subject: try to use more generic auto type for iteration

---
 include/conts/conts.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/conts/conts.h b/include/conts/conts.h
index 862bd31..d175d30 100644
--- a/include/conts/conts.h
+++ b/include/conts/conts.h
@@ -7,8 +7,16 @@
 #define CONTAINER_OF(ptr, type, member) \
 	(type *)((char *)(ptr) - offsetof(type, member))
 
+#if __STDC_VERSION__ >= 202311UL
+# define CONTS_AUTO auto
+#elif defined(__GNUC__)
+# define CONTS_AUTO __auto_type
+#else
+# warning "iteration won't work with this compiler"
+#endif
+
 #define foreach(name, i, s)\
-	for (auto i = CONTS_JOIN(name, begin)(s);\
+	for (CONTS_AUTO i = CONTS_JOIN(name, begin)(s);\
 			!CONTS_JOIN(name, end)(s, i);\
 			i = CONTS_JOIN(name, next)(i))
 #endif /* CONTS_H */
-- 
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