Nick Desaulniers b0839b281c Makefile.extrawarn: re-enable -Wformat for clang; take 2 ... -Wformat was recently re-enabled for builds with clang, then quickly re-disabled, due to concerns stemming from the frequency of default argument promotion related warning instances. commit 258fafcd06 ("Makefile.extrawarn: re-enable -Wformat for clang") commit 21f9c8a13b ("Revert "Makefile.extrawarn: re-enable -Wformat for clang"") ISO WG14 has ratified N2562 to address default argument promotion explicitly for printf, as part of the upcoming ISO C2X standard. The behavior of clang was changed in clang-16 to not warn for the cited cases in all language modes. Add a version check, so that users of clang-16 now get the full effect of -Wformat. For older clang versions, re-enable flags under the -Wformat group that way users still get some useful checks related to format strings, without noisy default argument promotion warnings. I intentionally omitted -Wformat-y2k and -Wformat-security from being re-enabled, which are also part of -Wformat in clang-16. Link: https://github.com/ClangBuiltLinux/linux/issues/378 Link: https://github.com/llvm/llvm-project/issues/57102 Link: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2562.pdf Suggested-by: Justin Stitt <jstitt007@gmail.com> Suggested-by: Nathan Chancellor <nathan@kernel.org> Suggested-by: Youngmin Nam <youngmin.nam@samsung.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2022-09-04 11:15:50 -07:00
..
atomic	locking/atomic: Add generic try_cmpxchg64 support	2022-05-18 00:08:27 +02:00
basic	randstruct: Move seed generation into scripts/basic/	2022-05-08 01:33:07 -07:00
clang-tools	scripts/clang-tools: Remove DeprecatedOrUnsafeBufferHandling check	2022-08-21 02:47:49 +09:00
coccinelle	update Coccinelle URL	2022-08-07 21:30:36 +02:00
dtc	h8300: remove stale bindings and symlink	2022-05-20 22:40:56 +02:00
dummy-tools	kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__	2022-08-21 02:47:48 +09:00
gcc-plugins	treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE	2022-06-10 14:51:36 +02:00
gdb	Updates to various subsystems which I help look after. lib, ocfs2,	2022-08-07 10:03:24 -07:00
genksyms	genksyms: adjust the output format to modpost	2022-05-24 16:33:20 +09:00
kconfig	kconfig: Qt5: tell the user which packages are required	2022-07-27 21:18:00 +09:00
ksymoops
mod	modpost: fix module versioning when a symbol lacks valid CRC	2022-08-21 02:47:36 +09:00
package	kbuild: rpm-pkg: fix build error when _arch is undefined	2022-07-27 21:18:00 +09:00
selinux	selinux: declare data arrays const	2022-05-03 15:53:49 -04:00
tracing	scripts/tracing: Fix typo 'the the' in comment	2022-08-02 15:17:00 -04:00
.gitignore	certs: move scripts/extract-cert to certs/	2022-01-08 18:28:21 +09:00
adjust_autoksyms.sh	kbuild: split the second line of *.mod into *.usyms	2022-05-08 03:16:59 +09:00
as-version.sh	kbuild: Switch to 'f' variants of integrated assembler flag	2021-09-03 08:17:20 +09:00
asn1_compiler.c
bin2c.c
bloat-o-meter	scripts/bloat-o-meter: add -p argument	2022-07-17 17:31:40 -07:00
bootgraph.pl
bpf_doc.py	bpf, docs: Use SPDX license identifier in bpf_doc.py	2022-07-22 00:28:14 +02:00
cc-can-link.sh
cc-version.sh	kbuild: collect minimum tool versions into scripts/min-tool-version.sh	2021-04-25 05:14:26 +09:00
check_extable.sh	scripts: check_extable: fix typo in user error message	2021-09-08 11:50:28 -07:00
check-local-export	scripts/check-local-export: avoid 'wait $!' for process substitution	2022-06-10 03:47:13 +09:00
check-sysctl-docs
checkdeclares.pl	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
checkincludes.pl
checkkconfigsymbols.py	checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file	2021-09-19 10:13:03 +09:00
checkpatch.pl	checkpatch: fix incorrect camelcase detection on numeric constant	2022-06-16 19:58:22 -07:00
checkstack.pl	checkstack: add riscv support for scripts/checkstack.pl	2022-07-27 21:18:00 +09:00
checksyscalls.sh	checksyscalls: ignore -Wunused-macros	2022-05-08 03:16:59 +09:00
checkversion.pl	scripts: checkversion: modernize linux/version.h search strings	2021-08-05 20:55:39 +09:00
cleanfile
cleanpatch
coccicheck	scripts: coccicheck: fix troubles on non-English builds	2021-05-18 11:09:59 +02:00
config	kconfig: config script: add a little user help	2021-01-04 10:38:11 +09:00
const_structs.checkpatch	const_structs.checkpatch: add frequently used ops structs	2022-01-20 08:52:54 +02:00
decode_stacktrace.sh	scripts/decode_stacktrace.sh: support old bash version	2022-04-29 14:37:57 -07:00
decodecode	scripts/decodecode: fix faulting instruction no print when opps.file is DOS format	2021-11-06 13:30:32 -07:00
depmod.sh	depmod: handle the case of /sbin/depmod without /sbin in PATH	2021-01-01 12:26:39 -08:00
dev-needs.sh	scripts/dev-needs: Add script to list device dependencies	2020-09-04 18:19:37 +02:00
diffconfig	scripts: switch explicitly to Python 3	2021-01-22 06:34:44 +09:00
documentation-file-ref-check	scripts: documentation-file-ref-check: fix bpf selftests path	2021-10-26 09:42:29 -06:00
export_report.pl
extract_xc3028.pl
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
faddr2line	scripts/faddr2line: Add CONFIG_DEBUG_INFO check	2022-08-02 22:08:17 +02:00
file-size.sh
find-unused-docs.sh
gcc-ld
gcc-x86_32-has-stack-protector.sh	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh	kbuild: Ignore __this_module in gen_autoksyms.sh	2022-06-26 06:15:05 +09:00
gen_ksymdeps.sh	kbuild: redo fake deps at include/ksym/*.h	2021-09-03 08:17:21 +09:00
gen-randstruct-seed.sh	randstruct: Move seed generation into scripts/basic/	2022-05-08 01:33:07 -07:00
generate_initcall_order.pl	init: lto: ensure initcall ordering	2021-01-14 08:21:09 -08:00
get_abi.pl	scripts/get_abi: Fix wrong script file name in the help message	2022-04-24 10:38:44 +02:00
get_dvb_firmware
get_feat.pl	scripts: get_feat.pl: use /usr/bin/env to find perl	2022-06-30 12:22:17 -06:00
get_maintainer.pl	get_maintainer: Honor mailmap for in file emails	2022-04-29 14:38:00 -07:00
gfp-translate
headerdep.pl
headers_install.sh	scripts: headers_install.sh: Update config leak ignore entries	2022-07-27 21:18:00 +09:00
insert-sys-cert.c
install.sh	kbuild: factor out the common installation code into scripts/install.sh	2022-05-11 21:45:53 +09:00
jobserver-exec	scripts/jobserver-exec: Fix a typo ("envirnoment")	2021-05-17 12:10:03 +09:00
kallsyms.c	scripts/kallsyms: update usage message of the kallsyms program	2022-05-27 15:51:48 +09:00
Kbuild.include	kbuild: add cmd_and_savecmd macro	2022-06-01 23:07:29 +09:00
Kconfig.include	kbuild: set EXIT trap before creating temporary directory	2022-08-03 22:56:38 +09:00
kernel-doc	scripts: kernel-doc: Always increment warnings counter	2022-06-13 11:07:45 -06:00
ld-version.sh	kbuild: collect minimum tool versions into scripts/min-tool-version.sh	2021-04-25 05:14:26 +09:00
leaking_addresses.pl	leaking_addresses: Always print a trailing newline	2021-10-15 11:25:13 +02:00
Lindent
link-vmlinux.sh	kbuild: factor out the common objtool arguments	2022-06-05 06:20:57 +09:00
Makefile	kbuild: Allow kernel installation packaging to override pkg-config	2022-04-05 17:03:31 +09:00
Makefile.asm-generic	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.build	kbuild: remove sed command from cmd_ar_builtin	2022-07-27 21:17:59 +09:00
Makefile.clang	um: Allow builds with Clang	2022-03-21 08:13:03 -07:00
Makefile.clean	kbuild: drop $(objtree)/ prefix support for clean-files	2022-05-08 03:17:00 +09:00
Makefile.compiler	kbuild: set EXIT trap before creating temporary directory	2022-08-03 22:56:38 +09:00
Makefile.debug	kbuild: split DEBUG_CFLAGS out to scripts/Makefile.debug	2021-10-24 13:48:33 +09:00
Makefile.dtbinst	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.extrawarn	Makefile.extrawarn: re-enable -Wformat for clang; take 2	2022-09-04 11:15:50 -07:00
Makefile.gcc-plugins	gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file	2022-08-16 12:25:53 -07:00
Makefile.headersinst	kbuild: prefix $(srctree)/ to some included Makefiles	2021-03-15 19:20:48 +09:00
Makefile.host	kbuild: sort hostprogs before passing it to ifneq	2020-08-10 01:32:59 +09:00
Makefile.kasan	kasan: always respect CONFIG_KASAN_STACK	2021-09-24 16:13:35 -07:00
Makefile.kcov	kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled	2020-08-10 01:32:59 +09:00
Makefile.kcsan	kcsan: Ignore GCC 11+ warnings about TSan runtime support	2021-12-09 16:42:27 -08:00
Makefile.lib	x86/retbleed: Add fine grained Kconfig knobs	2022-06-29 17:43:41 +02:00
Makefile.modfinal	kbuild: do not create *.prelink.o for Clang LTO or IBT	2022-05-29 18:39:35 +09:00
Makefile.modinst	kbuild: error out if $(INSTALL_MOD_PATH) contains % or :	2022-07-27 21:18:00 +09:00
Makefile.modpost	kbuild: do not create *.prelink.o for Clang LTO or IBT	2022-05-29 18:39:35 +09:00
Makefile.package	kbuild: rpm-pkg: pass 'linux' to --target option of rpmbuild	2022-07-27 21:18:00 +09:00
Makefile.randstruct	randstruct: Enable Clang support	2022-05-08 01:33:07 -07:00
Makefile.ubsan	ubsan: remove CONFIG_UBSAN_OBJECT_SIZE	2022-01-20 08:52:55 +02:00
Makefile.userprogs
Makefile.vmlinux	kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS	2022-05-24 16:33:20 +09:00
Makefile.vmlinux_o	x86/retbleed: Add fine grained Kconfig knobs	2022-06-29 17:43:41 +02:00
makelst
markup_oops.pl
min-tool-version.sh	scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390	2022-05-17 15:16:29 +02:00
mkcompile_h	sched/preempt: Tell about PREEMPT_DYNAMIC on kernel headers	2022-03-11 15:36:35 +01:00
mksysmap	mksysmap: Fix the mismatch of '.L' symbols in System.map	2020-06-06 23:39:20 +09:00
mkuboot.sh
module.lds.S	modules: Ensure natural alignment for .altinstructions and __bug_table sections	2022-07-11 10:49:14 -07:00
modules-check.sh	kbuild: check module name conflict for external modules as well	2021-04-25 05:22:42 +09:00
nsdeps	scripts/nsdeps: adjust to the format change of *.mod files	2022-06-08 20:14:13 +09:00
objdiff	kbuild: clean .tmp_* pattern by make clean	2022-06-05 06:20:57 +09:00
objdump-func	scripts: Create objdump-func helper script	2022-05-12 10:08:43 -07:00
pahole-flags.sh	scripts/pahole-flags.sh: Parse DWARF and generate BTF with multithreading.	2022-02-22 14:32:44 -08:00
pahole-version.sh	kbuild: Add CONFIG_PAHOLE_VERSION	2022-02-02 11:19:33 +01:00
parse-maintainers.pl
patch-kernel
profile2linkerlist.pl
prune-kernel	scripts/prune-kernel: Use kernel-install if available	2022-05-11 21:46:38 +09:00
recordmcount.c	ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount	2021-03-02 17:27:18 -05:00
recordmcount.h	recordmcount: Correct st_shndx handling	2021-06-18 09:09:17 -04:00
recordmcount.pl	nds32: Remove the architecture	2022-03-07 13:54:59 +01:00
remove-stale-files	RISC-V Patches for the 5.20 Merge Window, Part 2	2022-08-12 18:39:43 -07:00
setlocalversion	kbuild: do not quote string values in include/config/auto.conf	2022-01-08 18:03:57 +09:00
show_delta	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
sign-file.c	sign-file: Fix confusing error messages	2022-08-03 23:56:20 +03:00
sorttable.c	LoongArch: Add ELF-related definitions	2022-06-03 20:09:27 +08:00
sorttable.h	script/sorttable: Fix some initialization problems	2022-01-18 10:17:18 -05:00
spdxcheck-test.sh	docs: move Linux logo into a new images folder	2022-06-01 09:32:45 -06:00
spdxcheck.py	scripts/spdxcheck: Put excluded files and directories into a separate file	2022-05-18 15:34:33 +02:00
spdxexclude	scripts/spdxcheck: Exclude top-level README	2022-05-18 15:35:42 +02:00
spelling.txt	scripts/spelling.txt: add more spellings to spelling.txt	2022-03-22 15:57:00 -07:00
sphinx-pre-install	scripts: sphinx-pre-install: place a warning for Sphinx >= 3.0	2022-07-07 12:47:34 -06:00
split-man.pl	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
stackdelta
stackusage
subarch.include	LoongArch: Add build infrastructure	2022-06-03 20:09:27 +08:00
syscallhdr.sh	scripts: check duplicated syscall number in syscall table	2021-07-09 04:00:39 +09:00
syscallnr.sh	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
syscalltbl.sh	scripts: check duplicated syscall number in syscall table	2021-07-09 04:00:39 +09:00
tags.sh	scripts/tags.sh: Include tools directory in tags generation	2022-07-01 10:32:30 +02:00
test_fortify.sh	fortify: Update compile-time tests for Clang 14	2022-02-13 16:50:06 -08:00
tools-support-relr.sh	Makefile: fix GDB warning with CONFIG_RELR	2021-06-08 13:09:34 +01:00
unifdef.c
ver_linux	Removed the oprofiled version option	2021-05-03 17:23:06 -06:00
xen-hypercalls.sh	scripts: make some scripts executable	2021-08-10 09:13:25 +09:00
xz_wrap.sh	kbuild: add variables for compression tools	2020-06-06 23:42:01 +09:00