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63a0895d96
linux/include
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Kees Cook 63a0895d96 compiler: Remove uninitialized_var() macro 
Using uninitialized_var() is dangerous as it papers over real bugs[1]
(or can in the future), and suppresses unrelated compiler warnings
(e.g. "unused variable"). If the compiler thinks it is uninitialized,
either simply initialize the variable or make compiler changes.

As recommended[2] by[3] Linus[4], remove the macro. With the recent
change to disable -Wmaybe-uninitialized in v5.7 in commit 78a5255ffb
("Stop the ad-hoc games with -Wno-maybe-initialized"), this is likely
the best time to make this treewide change.

[1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/
[2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/
[3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/
[4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2020-07-16 12:35:31 -07:00
..
acpi Merge branch 'acpica' 2020-06-10 17:27:28 +02:00
asm-generic make asm-generic/cacheflush.h more standalone 2020-06-26 00:27:37 -07:00
clocksource
crypto
drm drm/edid: Replace zero-length array with flexible-array 2020-06-15 23:08:31 -05:00
dt-bindings - qcom : 2020-06-11 12:42:14 -07:00
keys RxRPC: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
kunit
kvm
linux compiler: Remove uninitialized_var() macro 2020-07-16 12:35:31 -07:00
math-emu
media media updates for v5.8-rc1 2020-06-13 13:09:38 -07:00
misc
net treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
pcmcia
ras
rdma dynamic_debug: add an option to enable dynamic debug for modules only 2020-06-08 11:05:56 -07:00
scsi SCSI misc on 20200605 2020-06-05 15:11:50 -07:00
soc pci-v5.8-changes 2020-06-06 11:01:58 -07:00
sound ASoC: Fixes for v5.8 2020-06-22 13:49:14 +02:00
target scsi: target: Rename target_setup_cmd_from_cdb() to target_cmd_parse_cdb() 2020-06-09 21:57:26 -04:00
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-25 18:27:40 -07:00
uapi VFIO fixes for v5.8-rc3 2020-06-27 15:17:21 -07:00
vdso
video
xen xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h 2020-06-11 15:15:19 +02:00