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Date: Fri, 14 Jun 2019 09:52:42 -0700
From: Nathan Chancellor <natechancellor@...il.com>
To: Masahiro Yamada <yamada.masahiro@...ionext.com>,
Michal Marek <michal.lkml@...kovi.net>
Cc: linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
Nick Desaulniers <ndesaulniers@...gle.com>,
Arnd Bergmann <arnd@...db.de>,
clang-built-linux@...glegroups.com,
Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH] kbuild: Enable -Wuninitialized
This helps fine very dodgy behavior through both -Wuninitialized
(warning that a variable is always uninitialized) and
-Wsometimes-uninitialized (warning that a variable is sometimes
uninitialized, like GCC's -Wmaybe-uninitialized). These warnings
catch things that GCC doesn't such as:
https://lore.kernel.org/lkml/86649ee4-9794-77a3-502c-f4cd10019c36@lca.pw/
We very much want to catch these so turn this warning on so that CI is
aware of it.
Link: https://github.com/ClangBuiltLinux/linux/issues/381
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---
scripts/Makefile.extrawarn | 1 -
1 file changed, 1 deletion(-)
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 98081ab300e5..699683a7c116 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -71,6 +71,5 @@ KBUILD_CFLAGS += -Wno-unused-value
KBUILD_CFLAGS += -Wno-format
KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-format-zero-length
-KBUILD_CFLAGS += -Wno-uninitialized
endif
endif
--
2.22.0
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