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grub2/grub2-fix-uninitialized-variable-in-btrfs-with-GCC7.patch

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From: Andrei Borzenkov <arvidjaar@gmail.com>
Subject: [PATCH] btrfs: avoid "used uninitialized" error with GCC7
sblock was local and so considered new variable on every loop
iteration.
Closes: 50597
---
grub-core/fs/btrfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/grub-core/fs/btrfs.c b/grub-core/fs/btrfs.c
index 9cffa91..4849c1c 100644
--- a/grub-core/fs/btrfs.c
+++ b/grub-core/fs/btrfs.c
@@ -227,11 +227,11 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
static grub_err_t
read_sblock (grub_disk_t disk, struct grub_btrfs_superblock *sb)
{
+ struct grub_btrfs_superblock sblock;
unsigned i;
grub_err_t err = GRUB_ERR_NONE;
for (i = 0; i < ARRAY_SIZE (superblock_sectors); i++)
{
- struct grub_btrfs_superblock sblock;
/* Don't try additional superblocks beyond device size. */
if (i && (grub_le_to_cpu64 (sblock.this_device.size)
>> GRUB_DISK_SECTOR_BITS) <= superblock_sectors[i])
--
tg: (ec4af11..) bug/50597-light (depends on: master)