From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Andrei Borzenkov <arvidjaar@gmail.com>

Date: Tue, 4 Apr 2017 19:22:32 +0300

Subject: [PATCH] btrfs: avoid "used uninitialized" error with GCC7

sblock was local and so considered new variable on every loop

iteration.

Upstream-commit-id: 6cef7f60795

---

 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 4a6efffeb46..24a71045025 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])