From: Alejandro Colomar <alx@kernel.org>
Date: Thu, 7 Aug 2025 12:32:11 +0000 (+0200)
Subject: lib/attr.h: format_attr(): Use it also with Clang
X-Git-Tag: 4.19.0-rc1~82
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=12a702e8157153de602ad0e1ddf5b97255b32b8f;p=thirdparty%2Fshadow.git

lib/attr.h: format_attr(): Use it also with Clang

Signed-off-by: Alejandro Colomar <alx@kernel.org>
---

diff --git a/lib/attr.h b/lib/attr.h
index a77e3e35f..a60b9f2cb 100644
--- a/lib/attr.h
+++ b/lib/attr.h
@@ -22,12 +22,16 @@
 # define NORETURN
 #endif
 
-#if (__GNUC__ >= 10)
+#if __has_c_attribute(gnu::format)
 # define format_attr(type, fmt, va)  [[gnu::format(type, fmt, va)]]
+#else
+# define format_attr(type, fmt, va)
+#endif
+
+#if (__GNUC__ >= 10)
 # define ATTR_ACCESS(...)            [[gnu::access(__VA_ARGS__)]]
 # define ATTR_ALLOC_SIZE(...)        [[gnu::alloc_size(__VA_ARGS__)]]
 #else
-# define format_attr(type, fmt, va)
 # define ATTR_ACCESS(...)
 # define ATTR_ALLOC_SIZE(...)
 #endif