queue-4.19/gcc-9-silence-address-of-packed-member-warning.patch

   1 From 6f303d60534c46aa1a239f29c321f95c83dda748 Mon Sep 17 00:00:00 2001
   2 From: Linus Torvalds <torvalds@linux-foundation.org>
   3 Date: Wed, 1 May 2019 11:05:41 -0700
   4 Subject: gcc-9: silence 'address-of-packed-member' warning
   5
   6 From: Linus Torvalds <torvalds@linux-foundation.org>
   7
   8 commit 6f303d60534c46aa1a239f29c321f95c83dda748 upstream.
   9
  10 We already did this for clang, but now gcc has that warning too.  Yes,
  11 yes, the address may be unaligned.  And that's kind of the point.
  12
  13 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  14 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  15
  16 ---
  17  Makefile |    2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/Makefile
  21 +++ b/Makefile
  22 @@ -652,6 +652,7 @@ KBUILD_CFLAGS       += $(call cc-disable-warni
  23  KBUILD_CFLAGS  += $(call cc-disable-warning, format-truncation)
  24  KBUILD_CFLAGS  += $(call cc-disable-warning, format-overflow)
  25  KBUILD_CFLAGS  += $(call cc-disable-warning, int-in-bool-context)
  26 +KBUILD_CFLAGS  += $(call cc-disable-warning, address-of-packed-member)
  27
  28  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  29  KBUILD_CFLAGS  += -Os $(call cc-disable-warning,maybe-uninitialized,)
  30 @@ -696,7 +697,6 @@ ifeq ($(cc-name),clang)
  31  KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
  32  KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
  33  KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
  34 -KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
  35  # Quiet clang warning: comparison of unsigned expression < 0 is always false
  36  KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
  37  # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the