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| author |   Kees Cook <keescook@chromium.org> | 2018-06-25 15:59:34 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2018-10-11 08:17:50 -0700 |
| commit | 0bb95f80a38f82884693194ea720e9cca5e12ada (patch) | |
| tree | 788e8ef11abfc6b7dc7cd0ba6b7f23fa2f6b95e1 /Makefile | |
| parent | compiler.h: give up __compiletime_assert_fallback() (diff) | |
| download | wireguard-linux-0bb95f80a38f82884693194ea720e9cca5e12ada.tar.xz wireguard-linux-0bb95f80a38f82884693194ea720e9cca5e12ada.zip | |
Makefile: Globally enable VLA warning
Now that Variable Length Arrays (VLAs) have been entirely removed[1]
from the kernel, enable the VLA warning globally. The only exceptions
to this are the KASan an UBSan tests which are explicitly checking that
VLAs trigger their respective tests.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Airlie <airlied@linux.ie>
Cc: linux-kbuild@vger.kernel.org
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -804,6 +804,9 @@ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) # warn about C99 declaration after statement KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) +# Variable Length Arrays (VLAs) should not be used anywhere in the kernel +KBUILD_CFLAGS += $(call cc-option,-Wvla) + # disable pointer signed / unsigned warnings in gcc 4.0 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |