linux-kernel - [PATCH v1] kbuild: enforce -Werror=unused-result

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20201117104736.24997-1-olaf@aepfle.de>
Date:   Tue, 17 Nov 2020 11:47:35 +0100
From:   Olaf Hering <olaf@...fle.de>
To:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Olaf Hering <olaf@...fle.de>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: [PATCH v1] kbuild: enforce -Werror=unused-result

It is a hard error if a return value is ignored.
In case the return value has no meaning, remove the attribute.

Signed-off-by: Olaf Hering <olaf@...fle.de>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index e2c3f65c4721..c7f9acffad42 100644
--- a/Makefile
+++ b/Makefile
@@ -497,7 +497,7 @@ KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
 KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
 		   -Werror=implicit-function-declaration -Werror=implicit-int \
-		   -Werror=return-type -Wno-format-security \
+		   -Werror=return-type -Werror=unused-result -Wno-format-security \
 		   -std=gnu89
 KBUILD_CPPFLAGS := -D__KERNEL__
 KBUILD_AFLAGS_KERNEL :=