[PATCH 4.19 43/43] kbuild: enforce -Werror=return-type
From: Greg Kroah-Hartman
Date: Mon Jan 18 2021 - 14:44:13 EST
From: Olaf Hering <olaf@xxxxxxxxx>
commit 172aad81a882443eefe1bd860c4eddc81b14dd5b upstream.
Catch errors which at least gcc tolerates by default:
warning: 'return' with no value, in function returning non-void [-Wreturn-type]
Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/Makefile
+++ b/Makefile
@@ -438,7 +438,7 @@ KBUILD_AFLAGS := -D__ASSEMBLY__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common -fshort-wchar \
-Werror-implicit-function-declaration \
- -Wno-format-security \
+ -Werror=return-type -Wno-format-security \
-std=gnu89
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_AFLAGS_KERNEL :=