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72 lines
2.5 KiB
Diff
72 lines
2.5 KiB
Diff
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From 563b1da6e6ae7af46cc8354cadb5dab416989f0a Mon Sep 17 00:00:00 2001
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From: Michael Chang <mchang@suse.com>
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Date: Mon, 26 Mar 2018 16:52:34 +0800
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Subject: Fix packed-not-aligned error on GCC 8
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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When building with GCC 8, there are several errors regarding packed-not-aligned.
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./include/grub/gpt_partition.h:79:1: error: alignment 1 of ‘struct grub_gpt_partentry’ is less than 8 [-Werror=packed-not-aligned]
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This patch fixes the build error by cleaning up the ambiguity of placing
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aligned structure in a packed one. In "struct grub_btrfs_time" and "struct
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grub_gpt_part_type", the aligned attribute seems to be superfluous, and also
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has to be packed, to ensure the structure is bit-to-bit mapped to the format
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laid on disk. I think we could blame to copy and paste error here for the
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mistake. In "struct efi_variable", we have to use grub_efi_packed_guid_t, as
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the name suggests. :)
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Signed-off-by: Michael Chang <mchang@suse.com>
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Tested-by: Michael Chang <mchang@suse.com>
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Tested-by: Paul Menzel <paulepanter@users.sourceforge.net>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/fs/btrfs.c | 2 +-
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include/grub/efiemu/runtime.h | 2 +-
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include/grub/gpt_partition.h | 2 +-
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3 files changed, 3 insertions(+), 3 deletions(-)
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diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
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index 4849c1ceb..be195448d 100644
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--- a/grub-core/fs/btrfs.c
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+++ b/grub-core/fs/btrfs.c
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@@ -175,7 +175,7 @@ struct grub_btrfs_time
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{
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grub_int64_t sec;
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grub_uint32_t nanosec;
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-} __attribute__ ((aligned (4)));
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+} GRUB_PACKED;
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struct grub_btrfs_inode
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{
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diff --git a/include/grub/efiemu/runtime.h b/include/grub/efiemu/runtime.h
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index 9b6b729f4..36d2dedf4 100644
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--- a/include/grub/efiemu/runtime.h
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+++ b/include/grub/efiemu/runtime.h
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@@ -29,7 +29,7 @@ struct grub_efiemu_ptv_rel
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struct efi_variable
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{
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- grub_efi_guid_t guid;
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+ grub_efi_packed_guid_t guid;
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grub_uint32_t namelen;
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grub_uint32_t size;
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grub_efi_uint32_t attributes;
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diff --git a/include/grub/gpt_partition.h b/include/grub/gpt_partition.h
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index 1b32f6725..9668a68c3 100644
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--- a/include/grub/gpt_partition.h
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+++ b/include/grub/gpt_partition.h
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@@ -28,7 +28,7 @@ struct grub_gpt_part_type
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grub_uint16_t data2;
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grub_uint16_t data3;
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grub_uint8_t data4[8];
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-} __attribute__ ((aligned(8)));
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+} GRUB_PACKED;
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typedef struct grub_gpt_part_type grub_gpt_part_type_t;
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#define GRUB_GPT_PARTITION_TYPE_EMPTY \
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--
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cgit v1.1-33-g03f6
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