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v0.5.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision dee2b702bcf067d7b6b62c18bdd060ff0810a800 authored by Gustavo A. R. Silva on 14 November 2021, 00:57:25 UTC, committed by Linus Torvalds on 14 November 2021, 21:27:30 UTC 
kconfig: Add support for -Wimplicit-fallthrough
 
Add Kconfig support for -Wimplicit-fallthrough for both GCC and Clang.

The compiler option is under configuration CC_IMPLICIT_FALLTHROUGH,
which is enabled by default.

Special thanks to Nathan Chancellor who fixed the Clang bug[1][2]. This
bugfix only appears in Clang 14.0.0, so older versions still contain
the bug and -Wimplicit-fallthrough won't be enabled for them, for now.

This concludes a long journey and now we are finally getting rid
of the unintentional fallthrough bug-class in the kernel, entirely. :)

Link: https://github.com/llvm/llvm-project/commit/9ed4a94d6451046a51ef393cd62f00710820a7e8 [1]
Link: https://bugs.llvm.org/show_bug.cgi?id=51094 [2]
Link: https://github.com/KSPP/linux/issues/115
Link: https://github.com/ClangBuiltLinux/linux/issues/236
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Co-developed-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent ce49bfc
Raw File
Tip revision: dee2b702bcf067d7b6b62c18bdd060ff0810a800 authored by Gustavo A. R. Silva on 14 November 2021, 00:57:25 UTC
kconfig: Add support for -Wimplicit-fallthrough
Tip revision: dee2b70
COPYING 
The Linux Kernel is provided under:

	SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note

Being under the terms of the GNU General Public License version 2 only,
according with:

	LICENSES/preferred/GPL-2.0

With an explicit syscall exception, as stated at:

	LICENSES/exceptions/Linux-syscall-note

In addition, other licenses may also apply. Please see:

	Documentation/process/license-rules.rst

for more details.

All contributions to the Linux Kernel are subject to this COPYING file.
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