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48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
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From d3a38022ee4fb0c1e5ac66afc456de8c97fc15b2 Mon Sep 17 00:00:00 2001
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From: Linus Torvalds <torvalds@linux-foundation.org>
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Date: Wed, 12 Jul 2017 19:25:47 -0700
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Subject: [PATCH 09/13] disable new gcc-7.1.1 warnings for now
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I made the mistake of upgrading my desktop to the new Fedora 26 that
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comes with gcc-7.1.1.
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There's nothing wrong per se that I've noticed, but I now have 1500
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lines of warnings, mostly from the new format-truncation warning
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triggering all over the tree.
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We use 'snprintf()' and friends in a lot of places, and often know that
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the numbers are fairly small (ie a controller index or similar), but gcc
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doesn't know that, and sees an 'int', and thinks that it could be some
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huge number. And then complains when our buffers are not able to fit
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the name for the ten millionth controller.
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These warnings aren't necessarily bad per se, and we probably want to
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look through them subsystem by subsystem, but at least during the merge
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window they just mean that I can't even see if somebody is introducing
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any *real* problems when I pull.
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So warnings disabled for now.
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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---
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Makefile | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/Makefile b/Makefile
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index 0847d3f6c162..16005a20f4ef 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -614,6 +614,9 @@ all: vmlinux
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include $(srctree)/arch/$(SRCARCH)/Makefile
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KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
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+KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
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+KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
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+KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
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ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
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KBUILD_CFLAGS += $(call cc-option,-Oz,-Os)
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--
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2.13.3
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