linux-kernel - [PATCH v1 5/6] lib: scanf: mark sscanf and vsscanf as __must

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Message-ID: <155223699818.4075.9452536087987358708.stgit@buzz>
Date:   Sun, 10 Mar 2019 19:56:38 +0300
From:   Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
To:     linux-kernel@...r.kernel.org
Cc:     Tejun Heo <tj@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Alexey Dobriyan <adobriyan@...il.com>
Subject: [PATCH v1 5/6] lib: scanf: mark sscanf and vsscanf as __must_check

Caller must check returned count of matched arguments.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
---
 include/linux/kernel.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 32726b25eaa5..3142a456f00b 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -483,9 +483,9 @@ const char *kvasprintf_const(gfp_t gfp, const char *fmt, va_list args);
 #define SCANF_MORE	(1 << 30)
 
 extern __scanf(2, 3)
-int sscanf(const char *, const char *, ...);
+int __must_check sscanf(const char *, const char *, ...);
 extern __scanf(2, 0)
-int vsscanf(const char *, const char *, va_list);
+int __must_check vsscanf(const char *, const char *, va_list);
 
 extern int get_option(char **str, int *pint);
 extern char *get_options(const char *str, int nints, int *ints);