linux-kernel - [PATCH 5/9] tools/nolibc: use __fallthrough_

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Message-ID: <20250915071115.1429196-6-benjamin@sipsolutions.net>
Date: Mon, 15 Sep 2025 09:11:11 +0200
From: Benjamin Berg <benjamin@...solutions.net>
To: linux-um@...ts.infradead.org,
	Willy Tarreau <w@....eu>,
	Thomas Weißschuh <linux@...ssschuh.net>,
	linux-kselftest@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: linux-kernel@...r.kernel.org,
	Tiwei Bie <tiwei.btw@...group.com>,
	Benjamin Berg <benjamin.berg@...el.com>
Subject: [PATCH 5/9] tools/nolibc: use __fallthrough__ rather than fallthrough

From: Benjamin Berg <benjamin.berg@...el.com>

Use the version of the attribute with underscores to avoid issues if
fallthrough has been defined by another header file already.

Signed-off-by: Benjamin Berg <benjamin.berg@...el.com>
---
 tools/include/nolibc/compiler.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h
index 369cfb5a0e78..87090bbc53e0 100644
--- a/tools/include/nolibc/compiler.h
+++ b/tools/include/nolibc/compiler.h
@@ -41,8 +41,8 @@
 #  define __no_stack_protector __attribute__((__optimize__("-fno-stack-protector")))
 #endif /* __nolibc_has_attribute(no_stack_protector) */
 
-#if __nolibc_has_attribute(fallthrough)
-#  define __nolibc_fallthrough do { } while (0); __attribute__((fallthrough))
+#if __nolibc_has_attribute(__fallthrough__)
+#  define __nolibc_fallthrough do { } while (0); __attribute__((__fallthrough__))
 #else
 #  define __nolibc_fallthrough do { } while (0)
 #endif /* __nolibc_has_attribute(fallthrough) */
-- 
2.51.0