mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-28 09:02:19 +00:00
6c7a6dba95
[FALSE ALERT]
There is a false alert when compiling btrfs-progs using gcc 12.2.1:
$ make D=1
kernel-shared/print-tree.c: In function 'print_sys_chunk_array':
kernel-shared/print-tree.c:1797:9: warning: 'buf' may be used uninitialized [-Wmaybe-uninitialized]
1797 | write_extent_buffer(buf, sb, 0, sizeof(*sb));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ./kernel-shared/ctree.h:27,
from kernel-shared/print-tree.c:24:
./kernel-shared/extent_io.h:148:6: note: by argument 1 of type 'const struct extent_buffer *' to 'write_extent_buffer' declared here
148 | void write_extent_buffer(const struct extent_buffer *eb, const void *src,
| ^~~~~~~~~~~~~~~~~~~
[CAUSE]
This is a false alert, the uninitialized part of buf will not be
utilized at all during write_extent_buffer().
[FIX]
Instead of allocating such ad-hoc buffer, go a more formal way by
calling alloc_dummy_extent_buffer(), which would properly set all
the members.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
|
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|---|---|---|
| .. | ||
| backref.c | ||
| backref.h | ||
| compression.h | ||
| ctree.c | ||
| ctree.h | ||
| delayed-ref.c | ||
| delayed-ref.h | ||
| dir-item.c | ||
| disk-io.c | ||
| disk-io.h | ||
| extent_io.c | ||
| extent_io.h | ||
| extent-tree.c | ||
| file-item.c | ||
| file.c | ||
| free-space-cache.c | ||
| free-space-cache.h | ||
| free-space-tree.c | ||
| free-space-tree.h | ||
| inode-item.c | ||
| inode.c | ||
| print-tree.c | ||
| print-tree.h | ||
| root-tree.c | ||
| send.h | ||
| transaction.c | ||
| transaction.h | ||
| ulist.c | ||
| ulist.h | ||
| uuid-tree.c | ||
| volumes.c | ||
| volumes.h | ||
| zoned.c | ||
| zoned.h | ||