linux-kernel - [PATCH v3 13/14] tools/nolibc: add __nolibc_static

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Message-Id: <20251220-nolibc-uapi-types-v3-13-c662992f75d7@weissschuh.net>
Date: Sat, 20 Dec 2025 14:55:57 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v3 13/14] tools/nolibc: add __nolibc_static_assert()

Add a wrapper for _Static_assert() to use within nolibc.
While _Static_assert() itself was only standardized in C11,
in GCC and clang dialects it is also available in older standards.

Link: https://lore.kernel.org/lkml/20251203192330.GA12995@1wt.eu/
Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/include/nolibc/compiler.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h
index c9ffd0496dae..a8c7619dcdde 100644
--- a/tools/include/nolibc/compiler.h
+++ b/tools/include/nolibc/compiler.h
@@ -63,4 +63,12 @@
 #  define __nolibc_clang_version 0
 #endif /* __clang__ */
 
+#if __STDC_VERSION__ >= 201112L || \
+	__nolibc_gnuc_version >= __nolibc_version(4, 6, 0) || \
+	__nolibc_clang_version >= __nolibc_version(3, 0, 0)
+#  define __nolibc_static_assert(_t) _Static_assert(_t, "")
+#else
+#  define __nolibc_static_assert(_t)
+#endif
+
 #endif /* _NOLIBC_COMPILER_H */

-- 
2.52.0