[PATCH v2 05/11] tools/nolibc: use __fallthrough__ rather than fallthrough

Benjamin Berg
2025-09-19T15:36:08Z

From: Benjamin Berg <benjamin.berg@intel.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@intel.com>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
---
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