libbtrfsutil: declare struct btrfs_ioctl_search_header as packed

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The search header is used for extracting data from buffer returned by
the SEARCH_TREE ioctl and needs special access helpers as there are no
guarantees about alignment.

With -fsanitize=alignment this still leads to an error because address
of the members is taken, regardless of the unaligned access method is
used (both temporary memcpy to a structure or the packed struct cast).

Add another hint to compiler that the structure is special and add the
packed attribute. This fixes the sanitizer error.

Signed-off-by: David Sterba <dsterba@suse.com>

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David Sterba 2024-05-29 21:56:31 +02:00

parent 06c7012a54

commit d8c7a5e6f4

1 changed files with 1 additions and 1 deletions

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