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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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
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@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxx 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
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