+ kbuild-disable-wformat-truncation-warnings-by-default.patch added to -mm tree

+ kbuild-disable-wformat-truncation-warnings-by-default.patch added to -mm tree

[akpm]

The patch titled
     Subject: kbuild: disable -Wformat-truncation warnings by default
has been added to the -mm tree.  Its filename is
     kbuild-disable-wformat-truncation-warnings-by-default.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/kbuild-disable-wformat-truncation-warnings-by-default.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/kbuild-disable-wformat-truncation-warnings-by-default.patch

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*** Remember to use Documentation/SubmitChecklist when testing your code ***

The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Arnd Bergmann <arnd@arndb.de>
Subject: kbuild: disable -Wformat-truncation warnings by default

With x86 allmodconfig, we currently get 233 -Wformat-truncation warnings,
which makes the entire warnings rather useless.

This turns off the warning by default, unless we specify W=1 or higher

Link: http://lkml.kernel.org/r/20170714120720.906842-2-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/Makefile.extrawarn |    3 +++
 1 file changed, 3 insertions(+)

diff -puN scripts/Makefile.extrawarn~kbuild-disable-wformat-truncation-warnings-by-default scripts/Makefile.extrawarn
--- a/scripts/Makefile.extrawarn~kbuild-disable-wformat-truncation-warnings-by-default
+++ a/scripts/Makefile.extrawarn
@@ -67,5 +67,8 @@ KBUILD_CFLAGS += $(call cc-disable-warni
 KBUILD_CFLAGS += $(call cc-disable-warning, sign-compare)
 KBUILD_CFLAGS += $(call cc-disable-warning, format-zero-length)
 KBUILD_CFLAGS += $(call cc-disable-warning, uninitialized)
+else
+# noisy gcc-7 warnings
+KBUILD_CFLAGS += $(call cc-option,-Wformat-truncation=0)
 endif
 endif
_

Patches currently in -mm which might be from arnd@arndb.de are

kbuild-disable-wformat-truncation-warnings-by-default.patch
scsi-megaraid-fix-format-overflow-warning.patch
scsi-mpt3sas-fix-format-overflow-warning.patch
scsi-fusion-fix-string-overflow-warning.patch
scsi-gdth-avoid-buffer-overflow-warning.patch
scsi-fnic-fix-format-string-overflow-warning.patch
scsi-gdth-increase-the-procfs-event-buffer-size.patch
usbvision-i2c-fix-format-overflow-warning.patch
hwmon-applesmc-fix-format-string-overflow.patch
x86-intel-mid-fix-a-format-string-overflow-warning.patch
platform-x86-alienware-wmi-fix-format-string-overflow-warning.patch
block-dac960-shut-up-format-overflow-warning.patch
fscache-fix-fscache_objlist_show-format-processing.patch
ib-mlx4-fix-sprintf-format-warning.patch