linux-kernel - [PATCH] sh: pass machine size to sparse

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: <20180528164018.16064-1-luc.vanoostenryck@gmail.com>
Date:   Mon, 28 May 2018 18:40:18 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>
Cc:     linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: [PATCH] sh: pass machine size to sparse

By default, sparse assumes a 64bit machine when compiled on x86-64
and 32bit when compiled on anything else.

This can of course create all sort of problems, like issuing false
warnings like: 'shift too big (32) for type unsigned long', or
worse, to not emit legitimate warnings.

Fix this by passing to sparse the appropriate -m32/-m64 flag

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
---
 arch/sh/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 65300193b..3a195c9d5 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -206,6 +206,8 @@ ifeq ($(CONFIG_DWARF_UNWINDER),y)
   KBUILD_CFLAGS += -fasynchronous-unwind-tables
 endif
 
+CHECKFLAGS += -m$(BITS)
+
 libs-$(CONFIG_SUPERH32)		:= arch/sh/lib/	$(libs-y)
 libs-$(CONFIG_SUPERH64)		:= arch/sh/lib64/ $(libs-y)
 
-- 
2.17.0