linux-kernel - [PATCH v4 05/18] tools/nolibc: stackprotector.h: add empty __stack_chk_init for !_NOLIBC

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Message-Id: <dd9ac1e061084703d006f0e7dafc4d08ba8d8e52.1689444638.git.falcon@tinylab.org>
Date:   Sun, 16 Jul 2023 02:22:15 +0800
From:   Zhangjin Wu <falcon@...ylab.org>
To:     w@....eu
Cc:     arnd@...db.de, falcon@...ylab.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, thomas@...ch.de
Subject: [PATCH v4 05/18] tools/nolibc: stackprotector.h: add empty __stack_chk_init for !_NOLIBC_STACKPROTECTOR

Let's define an empty __stack_chk_init for the !_NOLIBC_STACKPROTECTOR
branch.

This allows to remove #ifdef around every call of __stack_chk_init().

Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
---
 tools/include/nolibc/stackprotector.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/include/nolibc/stackprotector.h b/tools/include/nolibc/stackprotector.h
index 88f7b2d098ff..b620f2b9578d 100644
--- a/tools/include/nolibc/stackprotector.h
+++ b/tools/include/nolibc/stackprotector.h
@@ -45,6 +45,8 @@ void __stack_chk_init(void)
 	if (__stack_chk_guard != (uintptr_t) &__stack_chk_guard)
 		__stack_chk_guard ^= (uintptr_t) &__stack_chk_guard;
 }
+#else /* !defined(_NOLIBC_STACKPROTECTOR) */
+__inline__ void __stack_chk_init(void) {}
 #endif /* defined(_NOLIBC_STACKPROTECTOR) */
 
 #endif /* _NOLIBC_STACKPROTECTOR_H */
-- 
2.25.1